Questions Asked on
April 8, 2013

Chemistry
Ba(OH)2 is a strong electrolyte. Determine the concentration of each of the individual ions in a 0.700 M Ba(OH)2 solution. I know that Ba(OH)2 > Ba + 2OH But how do I determine the concentrations? I feel like I am making this more complicated than need be
asked by Hana 
math
Graph the quadratic functions y = 2x^2 and y = 2x^2 + 4 on a separate piece of paper. Using those graphs, compare and contrast the shape and position of the graphs
asked by Boobear 
Mathematics
"One number is 5 more than another. Their sum is 53. What are the two numbers?"
asked by Anonymous 
Statistics
The Boeing 757200 ER airliner carries 200 passengers and has doors with a height of 72 inches. Heights of men are normally distributed with a mean of 69 inches and a standard deviation of 2.8 inches. b) assume that half of the 200 passengers are men, what
asked by Liz 
math plz help
3. The number cube shown is rolled and the spinner shown is spun. Find P(5 and blue). the number cube goes to five. the spinner has four spaces. 1 is blue 4. The number cube shown is rolled and the spinner shown is spun. Find P(an odd number and yellow).
asked by Anonymous 
math
. Ms. Alison drew a boxandwhisker plot to represent her students’ scores on a midterm test. Josh received 72 on the test. Describe how his score compared to those of his classmates. (1 point)About 25% scored higher; about 75% scored lower. Everyone
asked by Terry 
Chemistry
A sample of sucrose, C12H22O11(s),contains 0.16 mol of oxygen, atoms(O). a.) What amount in moles of sucrose is in the sample? b.)How many atoms of carbon are in the sample?
asked by Lg 
Chemistry
The experimentally measured and generally accepted value for the molar volume of Na is about 23 cm3/mol. Which of the following best explains why the value calculated in Part B is significantly smaller than the measured values? Part B Answer 16.3 cm3/mol
asked by Morgan 
Mathematics
"The Rag Bag is having a '20% Off' sale. A pair of pants is on sale for $16. How much was it to begin with?"
asked by Anonymous 
government
what does national unity preach. mention 5 institutions that promote national unity.
asked by gabriella 
Chemistry
What is the pH of a 0.1 M NaOCl solution (Ka of HOCl is 2.95 x108) I did: x squared/.10= 2.95x108 x squared= 2.95x109 x= 5.43x105 log(5.43x105)= 4.27 pH However, the options I'm given are either a.) 3.74 b.) 6.47 c.) 8.23 d.) 10.27 What steps am I
asked by Marcus 
Chemistry
A cell has a standard emf of +0.177 V at 298 K. What is the value of the equilibrium constant for the cell reaction a) if n=1? b) if n=2?
asked by Summer 
physics
An ideally efficient freezer cools food to 260 K. If the room temperature is 300K, how much work does the freezer consume when removing 100J heat from the food?
asked by garnel 
AP Chemistry
An unknown metal M forms a soluble compound, M(NO3)2. A solution of M(NO3)2 is electrolyzed. When a constant current of 2.5 amperes is applied for 35 minutes, 3.06 grams of the metal M is deposited. Calculate the molar mass of M and identify the metal.
asked by Summer 
Life science, history, geography, and maths literacy
I'm in grade 11 and i was wondering if you could help me with this question. I'm doing those subjects and i would love to take a career that is linked in those subjects, what would they be?
asked by Ernest 
Chemistry
If the strips of MG ribbon are coated with white MgO, would this cause the mass of Mg that you calculate to be too high or too low? Why?
asked by Kate 
Alg 1
Factoring to solve quadratic equations: Use the ZeroProduct Property to solve each equation. Write your solution in roster form: The volume of a storage tub shaped like a rectangular prism is 24 ft^3. The height of the tub is 3 feet. The width is w feet
asked by Jane 
Chemistry
The Ksp for nickel(II) hydroxide is 5.47E16. What is the base dissociation constant for nickel(II) hydroxide? So I started off doing Ni(OH)2 (s) Ni2+ (aq) + 2OH (aq) I ..........................0 .................0 C ........................+x
asked by a Canadian 
Middelsworth
1. You flip a coin 30 times and get heads 11 times, so the chance of getting heads is . Is this an example of theoretical or experimental probability? (1 point)theoretical experimental 2. You have made 3 out of 10 of your last free throws. How many free
asked by Chico 
math check answer
1. Which of the following is an example of a dependent event? flipping two coins rolling a number cube and spinning a spinner choosing two scoops of ice cream **choosing a cookie at random, eating it, and then choosing another at random 2. Which of the
asked by Jman 
physical
STATE 4 facts and fallacies abt the effect of sports participation on women reproduction
asked by gabriella 
physics
A spherical mirror is polished on both sides. When the concave side is used as a mirror, the magnification is +2.7. What is the magnification when the convex side is used as a mirror, the object remaining the same distance from the mirror? If the object is
asked by Anonymous 
Physics AP
An ideal monatomic gas expands isobarically from state A to state B. It is then compressed isothermally from state B to state C and finally cooled at constant volume until it returns to its initial state A. How much work is done on the gas in going from B
asked by Emilea 
Chemistry
Instead of a strip of pure Mg ribbon, you are accidentally given a strip of an aluminummagnesium alloy. You calculate the mass of the strip as above. Would the mass of the strip be higher or lower than expected? Write the appropriate chemical equations
asked by Kate 
Chemistry
The halfequivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.220 moles of a monoprotic weak acid (Ka = 5.7 × 105) is titrated
asked by Felicia 
Chemistry
If your partner did not take into account the vapor pressure of water when calculating the moles of hydrogen produced, would the mass of Mg that was calculated at the end of the experiment be too high or too low? Why?
asked by Kate 
math 12 grade
find two positive number X and Y such that their sum is 35 and the product X2 Y5 is maximum?
asked by ramesh 
Statistics
Events and are mutually exclusive. Suppose event occurs with probability and event occurs with probability . Compute the probability that occurs or does not occur (or both). Compute the probability that either occurs without occurring or and both occur.
asked by Jack 
Biochemistry
In yeast, ethanol is produced from glucose under anaerobic conditions. What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions? A cellfree yeast extract is placed in a solution that
asked by Josh 
math
There are 6 pizzas for 8 people. If the pizzas are divided equally, how much pizza will each person receive?
asked by Holly 
physics
A 20.0m tall hollow aluminum flagpole is equivalent in strength to a solid cylinder 4.00 cm in diameter. A strong wind bends the pole much as a horizontal force of 900 N exerted at the top would. How far to the side does the top of the pole flex?
asked by meme 
chemistry
A sample of solid sulfur is heated with an electrical coil. If 105 joules of energy is added to a 12.4 gram sample initially at 24.4°C, what is the final temperature of the sulfur?
asked by sheila 
physics
A string of 15 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 58 W.What is the equivalent resistance of the light string? Answer in units of Ω
asked by Tony 
science
1. _____ is the chemical reaction in cells that needs oxygen to release energy and produces carbon dioxide and water as waste. (1 point) Breathing Exhaling Inhaling Respiration 2. Lungs are masses of _____, grapelike clusters of tiny sacs that are
asked by Anonymous 
physics
A box of books weighing 314 N is shoved across the floor by a force of 475 N exerted downward at an angle of 35° below the horizontal. (a) If μk between the box and the floor is 0.53, how long does it take to move the box 5.00 m starting from rest? What
asked by John Miller 
Chemistry
2Mg + O2 ¨ 2MgO How many grams of MgO are produced when 79.5 grams of O2 react completely with Mg according to this equation?
asked by Linzy 
Chemistry
1. Calculate the pH of a buffer solution that contains 0.32 M benzoic acid (C6H5CO2H) and 0.17 M sodium benzoate (C6H5COONa). [Ka = 6.5 × 105 for benzoic acid] Round your answer to two places past the decimal. 2. A solution is prepared by mixing 470 mL
asked by Erin 
physics
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = 28.0 cm). An object is placed to the left of the converging lens, and the final image produced by the twolens combination lies 20.3 cm to the left of the diverging
asked by Anonymous 
English (Check Please)
1. The speaker’s use of many exclamation points and imperative statements in “Beat! Beat! Drums!” helps readers feel the tone’s (Points : 3) humor. urgency. quiet calm. high spirits. 2. With what kind of life are the images in the second stanza of
asked by Desean 
physics
A string of 15 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 58 W.What is the equivalent resistance of the light string? Answer in units of Ω
asked by Tony 
World Geography
1. The Polish economy began to grow in the 1990s because the government A. built more stateowned factories. B. controlled prices better.
asked by bree 
Math
For each 10degree adjustment on your water heater thermostat, you can reduce carbon dioxide emissions by 500 pounds a year. By how many pounds will you reduce your carbon dioxide footprint if you turn down your water heater thermostat from 140¢ªF to
asked by Kristi 
calculus
if a ball is thrown vertically upward with an initial velocity of 48 ft/s, then its height, s, after t seconds is given by s(t)= 48t16t^2. a) what is the velocity of the ball after 1 second? b) when does the ball hit the ground? c) with what velocity does
asked by moises 
life orientation
five ways in which xenophobia problem impact on the community
asked by dolly 
Chemistry
1. Calculate the pH of a buffer solution that contains 0.32 M benzoic acid (C6H5CO2H) and 0.17 M sodium benzoate (C6H5COONa). [Ka = 6.5 × 105 for benzoic acid] Round your answer to two places past the decimal. 2. A solution is prepared by mixing 470 mL
asked by Erin 
Chemistry
given that: delta H [Cl(g)]=121.3 kJ*mol^(1) delta H [C(g)]= 716.7 kJ*mol^(1) delta H [CCl(subscript 4)(g)] =95.7kJ*mol^(1) calculate the average molar bond enthalpy of the carbonchlorine bond in a CCl(subscript 4) molecule.
asked by anonymous 
trig
if sin 41'=m. write m in terms of cos 41'
asked by thapelo 
physics
A long horizontal wire carries a current of 48A . A second wire, made of 2.6mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15cm below(Figure 1) . Determine the magnitude of the current in the lower wire.
asked by bud 
Chemistry
A sample of iron reacted with hydrochloric acid. The liberated hydrogen occupied 40.1 mL when collected over water at 27 C at a barometric pressure of 750 torr. What is the mass of the sample of iron? (Because of the collection of gas over water, the vapor
asked by Kate 
science
Suppose you hang an object of weight W by a string from a hanging spring scale, such as the kind used in some grocery stores. You then hang the scale with the object from the ceiling of an elevator. When the elevator is standing still, the scale will read
asked by Hanna 
Reading/Maps
This is what I have to do "Draw a map of mainland U.S.A. and show (draw)how the mississippi river divides the country (part of the labeling) and label both sides correctly." I was wondering if you can find me a map that way I can start it off like how
asked by Anon 
calculus
a spherical balloon's radius was measured to be 30 cm with a maximum possible error of 0.2 cm. a) use differentials to estimate the maximum error in the calculated volume. b) what is the relative error?
asked by marisol 
Science
Fast food restaurants keep food hot with infrared lamps. The heat is transferred to the food by _____. condensation conduction convection radiation I think it is radiation...?
asked by Cassie 
Science
PLEASE HELP MY DAUGHTER WANTS ME TO CHECK HER HOMEWORK AND I DON'T KNOW TO MUCH ABOUT SCIENCE LOL! BUT PLEASE HELP PLEASE PLEASE HELP ME PLEASE 'IN YOUR OWN WORDS PLEASE' PLEASE PLEASE PLEASE 'IN YOUR OWN WORDS' IN YOUR OWN WORDS PLEASE' I'M BEGAN YOU
asked by Bella (The Parent) 
Chem
how do you find the molarity of NaOH if 23.64ml of its solution is needed to neutralize .5632g of KHC8H4O4?
asked by Mary 
algebra 2
In a cooler there are 8 bottles of grape juice and 12 bottles of orange juice. There are also 6 blueberry yogurts and 9 strawberry yogurts. If you grab a bottle of juice and a yogurt without looking, what is the probability that you get a grape juice and a
asked by Lea 
physics
Consider two Nturn circular coils of radius R, each perpendicular to the axis of symmetry, with their centers located at z=±l/2 . There is a steady current I flowing in the same direction around each coil Assuming the N=100, I=2 Amperes, R=10 cm, l=2 cm
asked by abdul rahman 
physics
A student, crazed by the first physics Midterm, uses a pushing force of 80 N angled at 70° to push a 5.0 kg book across the frictionless ceiling of his room. a. What is the block's acceleration? b. What is the force of the ceiling on the book?
asked by Corey 
Math
Find the magnitude of the resultant vector of two 5pound forces that act on an object with an angle of 70° between them.
asked by Kyra 
stastics
For each of the following confidence intervals, indicate how much of the distribution would be placed in the cutoff region for a twotailed test from 80%, 85% and 99%
asked by jerry 
calculus
air is being pumped into a spherical balloon at a rate of 8 cm^3/min. Find the rate at which the radius of the balloon is increasing when the balloon's radius is 5 cm.
asked by marisol 
physics
A 570turn solenoid is 19cm long. The current in it is 32A . A 2.0cm long straight wire cuts through the center of the solenoid, along a diameter. This wire carries a 27A current downward (and is connected by other wires that don't concern us). What is
asked by bud 
Finding the midpoint
Find the midpoint of the line segment joining the points P1 and P2 P1=(3,2) P2=(5,7) The midpoint is=
asked by Lauren 
Math help
Which of the following is an example of a dependent event? 1 flipping two coins 2 rolling a number cube and spinning a spinner 3 choosing two scoops of ice cream 4 choosing a cookie at random, eating it, and then choosing another at random
asked by Mr.Brain 
Physics
A long horizontal wire carries a current of 48A . A second wire, made of 2.6mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15cm below(Figure 1) . Determine the magnitude of the current in the lower wire.
asked by bud 
algebra.. HELP ME!!
Mai spends 7 3/4 hours in school each day. Her lunch period is 1/2 hour long, and she spends a total 7/10 hour switching rooms between classes. The rest of her day is spent in 6 classes that are all the same length. How long is each class?
asked by syram 
SS Please check answers
1. The admission of Missouri as a slave state was controversial in the Senate because the Senate was proslavery. it would create sectionalism. **it would upset the balance. the Senate was antislavery. 2. The main topic of the LincolnDouglas debates was
asked by Jman 
World Geography
1.The physical feature of Western Europe where most major cities are found is called A. the plains. B. the glacier.
asked by bree 
algebra 2
In a high school, 35% of the 3500 students participate in sports. The school board is proposing a participation fee to help with costs. To get student opinion, the school board randomly selects a committee of 6 students to join a discussion of the
asked by Lea 
Math
find the accumulated value of an investment of 20,000 for 3 years at an interest rate of 7%, if the money is a compounded semiannually; b. coumpounded quaterly; c. compounded monthly d. coumpounded continuously.
asked by Keresha 
Soc. Studies
Which description best captures Abraham Lincoln's approach to slavery before he signed the Emancipation Proclamation? A.Lincoln was himself proslavery, but thought that states should have the right to choose whether or not slavery was legal. B.Lincoln was
asked by Cassie 
mathematics
The perimeter of a square is 17.6cm.find the length of one side of the square
asked by raheim mckenzie 
Science
When 2 resistors, R1 and R2 are connected in series across a 6V battery the potential difference across R1 is 4V. When R1 and R2 are connected in parallel to the same battery the current through R2 is 0.45 A. Find the values of R1 and R2. Thanks :)
asked by Lisa 
physics
A 570turn solenoid is 19cm long. The current in it is 32A . A 2.0cm long straight wire cuts through the center of the solenoid, along a diameter. This wire carries a 27A current downward (and is connected by other wires that don't concern us). What is
asked by bud 
science
10 students whose combined mass is 700 kg ride down 30 m in a elevator. How much thermal energy is produced in the elevator system by the loss in gravitational potential energy of the students
asked by Anonymous 
Calculus
Determine whether the planes are parallel or orthogonal. Equations given: 5x  3y + z = 4 x + 4y + 7z = 1 How exactly do I solve this? It wasn't covered completely in class.
asked by Krista 
AP Chemistry
So I have the reaction 2HBr(g) H2(g)+Br2(g) I'm supposed to find the equilibrium constant, K, using free energy (G) values. The values in my textbook for G of H2 and Br2 were zero, and the value for HBr(g) was 53.5. So, to find delta G I did products 
asked by Casey 
Literature
"Slowly, silently, now the moon Walks the night in her silver shoon This way, and that, she peers, and sees Silver fruit upon silver trees; One by one the casements catch Her beams beneath the silvery thatch; Couched in his kennel, like a log, With paws of
asked by Anonymous 
Chemistry
a sample of helium gas has a volume of 1.25L at 125celcius and 50.0atm. the gas is compressed at 50.0 atm to volume of 325ml. what is the final temperature of the helium gas in Celcius
asked by Mckee 
Accounting
The Divine Merchandising Corporation began March operations with merchandise inventory of 6 units, each of which cost $27. During March, Divine Merchandising made the following purchases: (1) March 4, 12 units @ $28 per unit, (2) March 15, 18 units @ $30
asked by Kai 
Science
Two parents have three children. They have two girls and one boy. What is the probability that the next child will be a boy?
asked by Bobby 
Algebra.... SOMEONE HELP ME!!!!
A rectangular room on a blueprint is 2 inches wide and 5 inches long. If the scale of the blueprint to the actual room is 1:72, what is the width of the room?
asked by syram 
stat probability
A multiple choice quiz consists of 20 questions, each with 3 possible equally likely answers. If a student guesses at the answer to each question, then the mean number of correct answers selected by the student is?
asked by Lynn 
haramaya/dinamics
the skier leaves 20degre surface at 10m/s a)determine the distance d to the point where he lands
asked by aniso 
Physics
Calculate the work required to be done to stop a car of 1500kg moving with a velocity of 60km/hr?
asked by Abhishek 
Physics
A long, narrow rectangular loop of wire is moving toward the bottom of the page with a speed of 0.021 m/s (see the drawing). The loop is leaving a region in which a 2.7 T magnetic field exists; the magnetic field outside this region is zero. During a time
asked by Anonymous 
Literature
"Slowly, silently, now the moon Walks the night in her silver shoon This way, and that, she peers, and sees Silver fruit upon silver trees; One by one the casements catch Her beams beneath the silvery thatch; Couched in his kennel, like a log, With paws of
asked by Anonymous 
English
An international agreement that aims to reduce carbon dioxide emissions and the presence of greenhouse gases. Countries that ratify the Kyoto Protocol are assigned maximum carbon emission levels and can participate in carbon credit trading. Emitting more
asked by Brittany 
Physics gravity
A thin spherical shell has a radius of 2.4 m and a mass of 410 kg, and its center is located at the origin of a coordinate system. Another spherical shell with a radius of 1 m and mass 135 kg is inside the larger shell with its center at 0.6 m on the x
asked by Chel 
science
With the class watching from a safe (and dry!) distance below, suppose the student drops the balloon and the balloon hits the sidewalk with a force of 20 N. How much work was done on the sidewalk by the balloon?
asked by Janny 
algebra
Could you show me how to do these math systems and show your work so i understand how to do them. 1) 3x+2y+4z=19 2xy+z=3 6x+7yz=17 2) 5x+8y+6z=14 2x+5y+z=12 3x+6y12z=20 3) x^2+2xy2y^2=11 x^2+xy2y^2=9
asked by hal 
Math
A rectangular parcel of land has an area of 2,000 ft2. A diagonal between opposite corners is measured to be 10 ft longer than one side of the parcel. What are the dimensions of the land, correct to the nearest foot?
asked by Jacks 
Creative Writing
I know I asked this earlier, but right now I want to know if this is close enough to the original Alice in Wonderland to be a fractured fairytale (I've never seen Alice in Wonderland before and don't have enough time to watch it and write this before it's
asked by Millie 
chemistry
Which weak acid would be best to use when preparing a buffer solution with a pH of 8.50? 1) an acid with Ka=3.3x10^9 2) an acid with Ka=5.0x10^4 3) an acid with KA=6.3x10^6 4) an acid with Ka=5.0x10^7 5) an acid with Ka=4.0x10^5 6) an acid with
asked by Anonymous 
Science
Air is a good conductor of heat. true false I think it is false...?
asked by Cassie 
finance
Fashion Distributors Incorporated currently sells on terms of 2/10, net 30, with bad debt losses at 1% of gross sales. Of the 99% of the customers that pay, 50% take the discount and pay on Day l0; the remaining 50% pay on Day 30 (average collection period
asked by raj 
Physics(Simple Harmonic motion and Elasticity)
A copper rod (length = 2.0 m, radius = 3.0 * 10^3 m) hangs down from the ceiling. A 9.0kg object is attached to the lower end of the rod. The rod acts as a “spring,” and the object oscillates vertically with a small amplitude. Ignoring the rod’s
asked by Elapid 
Mathematics
Is this the correct answer to the following question? "A shake at the Shake Shack costs $0.80. The bill for three burgers and a shake was $4.40. How much is a burger?" $4.40$0.80= $3.60 $3.60/3= $1.20 My answer: $1.20
asked by Anonymous 
Algebra 2
A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher choose the students?
asked by Lea 
Chemistry
If you wanted to prepare 50.0 mL of hydrogen, collected over water at 25 C on a day when the barometric pressure was 730 torr, what mass of aluminum would you react with a hydrochloric acid? (Balance the equation first.)
asked by Kate 
Chemistry
What mass (g) of magnesium chloride (MgCl2) must react with sulfuric acid (H2SO4) to release 890.2 ml of Hydrogen chloride (HCl) gas at STP according to the following equation? Round to one decimal place. MgCl2 (s) + H2SO4 > MgSO4 (aq) + 2 HCl
asked by Linzy 
Check answers please Statistics
Suppose that each student in stat. has a 9% chance of missing class on any given day and that student attendance is independent. In a stat. class of 20 students, find the probability that: 1) no student is absent =15.16 2) one student is absent =30 3)
asked by Chris 
Mathematics
"Kim is 15. Kim's father is 39. In how many years will Kim's father be exactly twice as old as Kim will be?"
asked by Anonymous 
Science
A good refrigerant must have a low boiling point. true false I think it is true...?
asked by Cassie 
physics
The mean diameters of X and Y, two planets in the same solar system, are 7.0 103 km and 1.4 104 km, respectively. The mass of X is 0.15 times the mass of Y. The value of g on Y is 8.6 m/s2. (a) What is the ratio of the mean density of X to that of Y (ρX /
asked by Rachel 
physics
A truck of mass 8,000kg is traveling along a level road at an initial speed of 25m/s. The driver then shifts into neutral so that the truck is coasting, and the truck gradually slows to a final speed of 13m/s.
asked by KAthryn 
ABC
How many integers n satisfy the inequality 21≤n≤47?
asked by Anonymous 
Physics
A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.12 m. The normal to the plane of the loop is parallel to a constant magnetic field ( = 0°) of magnitude 0.85 T. What is the change ÄÖ
asked by Don 
science
1. _____ is the process by which food is broken down so that nutrients can be used by the body. (1 point) Absorption Digestion Elimination Ingestion 2. What type of digestion takes place in the mouth? (1 point) chemical mechanical chemical and mechanical
asked by Anonymous 
engineering
Mary Williams needs to change a Fahrenheit temperature to Celsius. Use the Fahrenheit temperature of 80 degrees to test your solution.
asked by Anonymous 
Chemistry
What volume of hydrogen, measured at 25 C and 1.00 atm can be produced by dissolving 5.0 g of magnesium in hydrochloric acid? (Write and balance the equation for the reaction first.)
asked by Kate 
Mathematics
"Kim is 15. Kim's father is 39. In how many years will Kim's father be exactly twice as old as Kim will be?"
asked by Anonymous 
CHECK ANSWERS AND HELP PLEASE
if P(A)=.60, P(A/B)=.50, AND P(B)= .40, answer the following. 1) events A and B are independent =FALSE true or false or cannot determine 2) events A and B are disjoint =TRUE true or false or cannot determine 3) find P(A and B) =??????
asked by MELISSA 
Physics
In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the
asked by Don 
civi edu.
define constitution and explain federal constitution,unitary constitution,confederal constitution
asked by gabriella 
physics
Suppose the Sun is 1.52669 × 108 km from Earth. The speed of light is 2.99792 × 108 m/s. How long does it take for its light to reach us? Answer in units of min
asked by hannah 
Masemola high school
Two institution or organisations that are involved in supporting or giving redress to these disasters. Teenage pregnancy, lack of infrastructure and genetically modified foods.
asked by Thapelo tower 
business math
A computer with software costs $2,987, and Docie Johnson has agreed to pay 19% per year finance charge on the cash price. If she contracts to pay the loan in 18 months, how much will she pay each month?
asked by tmouery 
English
How might an instruction manual designed for troubleshooting differ from an instruction booklet designed for improving performance in a skill?
asked by Kel Marie 
HELP!! Chemistry
Draw a Lewis structure for SO(subscript 2) in which all atoms obey the octet rule. Show formal charges. Draw a Lewis structure for SO(subscript 2) in which all the atoms have a formal charge of zero. Explicitly showing zero charges is optional.
asked by anonymous 
Science
Most organisms reproduce: A. Sexual B. asexual C. By meiosis Is it b not sure between b and a
asked by Tony 
English
1. This is the boy whom Mary likes. 2. This is the boy who Mary likes. 3. This is the boy Mary likes. (Are they all grammatical? When do we use Sentence 2?)
asked by rfvv 
Creative writing
I have to write a fractured fairy tale, and I have 2 questions. 1) is Alice in Wonderland a fairy tale? And 2) If I wrote something about Alice who falls asleep in wonderland and is killed and forced to be there forever, does that count as a fractured
asked by Millie 
stat probability
Find the mean of the distribution shown. x 2 5 7 P(x) 0.28 0.42 0.30 What is the mean and the standard deviation of this distribution?
asked by Lynn 
math
the length of a rectangle hallway is 3 times its breadth if the perimeter of the hallway is 48 m find its length and breadth
asked by mahendra 
Geometry
Convex quadrilateral ABCD has sides AB=BC=21, CD=15 and AD=9. Given additionally that ∠ABC=60∘, what is the length of BD?
asked by stranger 
stat probability
At a certain college, there were 780 science majors, 320 engineering majors, and 390 business majors. If one student was selected at random, the probability that they are a business major is?
asked by Lynn 
Probability
In a cookie jar, there are 6 choco chip cookies and 8 oatmeal cookies. Kim takes out the cookies one at a time and proceeds to eat them. The probability that the 7th cookie that Kim eats is a choco chip cookie is a/b, where a and b are positive coprime
asked by Kim 
Science
A device that can be used both for cooling and heating is a _____. heat engine compressor heat pump vaporizer I think it is Heat pump..?
asked by Cassie 
Algebra
the angle of elevation from bottom to the top of the mountain has a measure of 60 degrees. suppose a ski lift to the top is 2000 feet long. how high is the mountain to the nearest feet? Am I suppose to find the sine of 60?
asked by Casey 
geometry
There is a square with a star inside. The square has 25cm to show the length of one side. On the right, outside the square, it says 125cm squared, with a line pointing the center of the star in the square. The question is; The target of a shooting game
asked by Sandy 
Math Help
Suppose that each student in stat. has a 9% chance of missing class on any given day and that student attendance is independent. In a stat. class of 20 students, find the probability that: 1) no student is absent 2) one student is absent 3) three student
asked by Chris 
trig
I am trying to get wxMaxima to give me arcsin(4/5), either in radians or degrees. I am using a: 4/5$ b:asin(a)$ print("the angle is ", b)$ But it returns the angle is asin(4/5) How do I get wxMaxima to give me the angle? I want .927 radians or 53.1
asked by Josh 
Mathematics
Is this the correct answer to the following question? "You can ride a bicycle 15 mph. Your sister rides 12 mph. You give her a one hour head start. In how many hours will you catch up if neither of you stops?" 1512= 3 12/3= 4 My answer: 4 hours.
asked by Anonymous 
life orientation
three ways in which enviromental health hazard can contribute to ones ill health
asked by frans 
Physics
You wish to swim across a small river to your friend on the other side. The river is 30 m wide and you begin to swim straight across it at a speed of 1 m/s. The current in the river is 0.5 m/s and so the river carries you downriver as you swim. How far
asked by Bob 
Science ms sue please help
A horse and a donkey can mate with each other. Their offspring,called a mule, is not fertile. Do horses and donkeys belong to the same species? Explain your answer. A scientist collects wild rabbits that live at sea level and moves them to the mountains.
asked by Gabby 
Please help me solve it. Math
solve for the value of x: 6log (x^2+1)x=0. please help me because I do not have any idea in this topic.
asked by Jeconiah 
Chemistry
What mass (g) of water is produced by the combustion of 48.8 g of propane according to the following reaction? Round your answer to one decimal place. C3H8(g) + 5 O2(g) > 3 CO2(g) + 4 H2O (l)
asked by Linzy 
Chemistry
What is the mass (g) of nickel(II) nitrate (182.71 g/mol) dissolved in 160.4 mL of 0.100 M Ni(NO3)2 solution?
asked by Linzy 
Probability
A school is running a raffle for two prizes. 59 tickets were sold for the raffle, numbered 1,…,59. All the tickets are put into a hat and a teacher picks out two tickets which have numbers i and j from the hat. What is the expected value of i−j?
asked by stranger 
Statistics Help please
Is Scanner Accuracy the Same for Specials? In a study of store checkout scanning systems, samples of purchases were used to compare the scanned prices to the posted prices. The accompanying table summarizes results for a sample of 819 items. When stores
asked by Bettie 
Science
What is the mass of LiF in 100.0mL of 0.10M solution?
asked by Anonymous 
Math
Bought 3 shirts & 2 pair pants for $85 and my friend bought 2 shirts & 5 pants for $130, and the shirts are the same price, what is the price of each shirt?
asked by Anna 
Algebra
I need some help with algebra as I'm confused as to how to solve them. Find the common difference d and the value of a1 using the information given. 1. a6= 5/4, a8= 9/4 Evaluate each sum. 2. E like symbol that has a 29 on the top. On the bottom n=1 and to
asked by Jenny 
life orientation
one environmental or human factor that causes ill health,accidents,crises and disasters within south africa
asked by nokuthula 
Trig
Solve the equation on 0° ≤ θ < 360° and express in degrees to two decimal places. sin(2θ) = 0.7843 I've gotten 308.345° (QIV) and 231.655° (QIII). I'm unsure how to get the answer though? The final answer is: 115.83°, 295.83°, 154.17°,
asked by Mary 
Newton's Laws
1. An 1760 kg car is moving to the right at a constant velocity of 2.94 m/s. (a) What is the net force on the car? (b) What would be the net force on the car if it were moving to the left? 2.A freight train has a mass of 6 107 kg. If the locomotive can
asked by Cole 
FRM 121 Fashion History II
Describe the stages in the Victorian and Bustle Era acquisition of adult clothing by male and female children in the late 19th century?
asked by Tomika Davis 
Newton's Laws
1. An 1760 kg car is moving to the right at a constant velocity of 2.94 m/s. (a) What is the net force on the car? (b) What would be the net force on the car if it were moving to the left? 2.A freight train has a mass of 6 107 kg. If the locomotive can
asked by Sarah 
Science
Most microrganisms reproduce: A. Sexually B. asexually C. By meiosis A or B not sure
asked by Tony 
algebra 2
Students at a high school all took the same English test. The scores are approximately normally distributed with a mean of 77 and a standard deviation of 9. If 2500 students took the test, approximately how many scored above 86 or below 68%?
asked by Lea 
Help! Algebra
Find the common ratio r and the value of A1 with the information given. 1. A3=324 A7=64 2. A4=32/3 A8=54
asked by Becca 
English
What is the most important reason to consider typography when creating a procedural text?
asked by Kel Marie 
Physics
two blocks are connected by a light rope over a pulley fixed at the edge of a table such that bloc A, 16kg is a the table top and block B, 8kg is hanging by the edge. block A is acted upon by a mass of 200N acting towards the center of table surface. the
asked by ashton 
aig math(Ms.Sue)
Your school librarian has asked your class for some help on the purchase of some new bookcases with 2 shelves each. She has 300 new books she needs to shelve. 1/2 of the books are half an inch thick. 1/3 of them are 1/4 of an inch thick, and the rest are
asked by lidia 
hist
Can free labor compete with slave labor?
asked by jennaa 
Science
All objects emit _____ radiation. A.electromagnetic B.kinetic C.thermal D.solar I think it is A...?
asked by Cassie 
fractions
how can you tell that a fraction is a unit fraction?
asked by ttuuffyy 
life orientation
Critically discuss ten ways in which the environmental health hazards can impact on one's health
asked by prudence 
chem
If a buffer solution is 0.170 M in a weak acid (Ka = 7.8 × 105) and 0.500 M in its conjugate base, what is the pH?
asked by Anonymous 
Chemistry
A hospital glucose solution is analyzed to verify its concentration. A 10.0 mL sample with a mass of 10.886 is evaporated to dryness. If the solid glucose residue has a mass of 0.648, what is the m/m% concentration?
asked by Linzy 
Chemistry
What is the molarity of a saline solution that contains 3.6 g NaCl (58.44 g/mol) dissolved in 100.0 mL of solution?
asked by Linzy 
Chemistry
You have a stock solution of 5.0 M H2SO4. How many mL of stock solution are required to make 136 mL of 1.6 M H2SO4 solution
asked by Linzy 
Analytic Geometry/Calculus
We didn't go over the perpendicular form in class, only the parallel. Find the general form of the equation of the plane passing through the point and perpendicular to the specified vector or line.
asked by Arya 
Three Dimensions/Calculus
Find the general form of the equation of the plane passing through the point and perpendicular to the specified vector or line. P= (2,1,2) which is perpendicular to n=i
asked by Aunna 
Mathematics
Is this the correct answer to the following question? "You can ride a bicycle 15 mph. Your sister rides 12 mph. You give her a one hour head start. In how many hours will you catch up if neither of you stops?" 1512= 3 12/3= 4 My answer: 4 hours.
asked by Anonymous 
math
Say the price of a gallon of milk was raised from $3.00 to $3.50. What was the percent increase? Round to the nearest whole percent.
asked by Jennifer 
Math
A farmer is planting squash plants that need 2 3/8 feet to spread out. He has an area along a fence that is 20 feet long. Round the amount of space the squash plants need to the nearest 1/2 foot. How many squash plants can the farmer grow along the fence?
asked by Laura 
Math
You earned a $25 gift card by working in Apangea and have purchased four items. Please list these items in the table below along with their cost. Then calculate the cost of each item as a fraction a decimal and as a percentage. 1.Pack of pencils Amount
asked by Jerald 
physics
five joules of work are needed to shift .5 C of charge from one place to another. the potential differences between the places is
asked by Susan 
Grammar PLease Check MY answers!
Put brackets [ ] around the adverb in each of the following sentences. Write how if the adverbs tell how, when if the adverbs tells when, or where if the adverb tell where the action takes place. 1. Tameesha thought her prom gown draped beautifully. 2. She
asked by Mandie 
Algebra
The value in dollars, V, of a certain stock can be modeled by the equation V=16+88t+101, where t represents the time in months.When did the stock become worthless?
asked by Mark 
LA
What do you learn from the dialogue between Mr. Frank and Miep at the beginning of Scene 1? A;Miep wants to show Mr. Frank something in the building. B;Mr. Frank wants to live in this building to hold on to his memories. C;The war has ended, but Mr. Frank
asked by jeff 
math
Ok.. "The strongest recorded earthquake in the world took place in Child on May 22, 1960. It had a magnitude of 9.5 on the Richter scale. The strongest quake actually recorded in Canada was magnitude 8.1 on August 22, 1949 and occurred off the Queen
asked by Josh 
math
Selma went to the mall and spent 1/3 of her money. She then lost 1/2 of what she had left. She then had $5. How much money did Selma originally have? I know the answer is 30 but how do I explain others how to figure it out easily?
asked by CGM 
achem
1L of a .2M solution of butanoic acid is altered by adding 5.00g of sodium butanoate. what is the pH of the new solution?
asked by Lana 
Mathematics
System 5x+8y+6z=14 2x+5y+z=12 3x+6y12z=20
asked by Joe 
algebra2
What are the mean, variance and standard deviation of these values? 62,41,54,60,49,58.
asked by Lea 
life orientation
Critically discuss 6 ways in which the environment health hazard can impact negativly on ones health
asked by itumeleng 
math beyond this
Is there a way to make this look nicer? x^2+4x (208/x^2)
asked by Iggy 
chemistry
how do i predict a conjugate a base? Ex: HBr. The conjugate base is Br a. NH4+ b. H2O c. H2PO4
asked by K 
Physics, diffraction
1. Yellow light of wavelength 580 nm shines on a diffraction grating with 4000 lines/cm. A.At what angles do the firstorder and secondorder maxima occur?
asked by Jamie 
art history
According to the lesson, most African art was created for all of these purposes EXCEPT:
asked by Kristen 
math
the world record for the men's long jump is 29 3/8 feet. the women's record for the same event is 24 88/48 feet. How many feet longer is the men's record?
asked by lee 
reading
All of the following are goals of study reading EXCEPT: A. greater speed. B. retain information in your longterm memory. C. be an active reader. D. active reading
asked by cody 
Statistics
A study of two groups of children since early childhood: One group of 62 attended preschool. A control group of 61 children from the same area and similar backgrounds did not attend preschool. Over 10 year period as adults, 38 of the preschool sample and
asked by Jose 
Please help science
Most organisms reproduce: Sexually Asexually By meiosis Is it asexually or sexually not sure I think it is asexually though
asked by Tony 
Physics
A series RCL circuit has a resonant frequency of 1470 Hz. When operating at a frequency other than 1470 Hz, the circuit has a capacitive reactance of 5.0 Ù and an inductive reactance of 29.0 Ù. (a) What is the value of L? 1 H (b) What is the value of C?
asked by Anonymous 
Chemistry
titration of a 50.00mL of KOH required 175.00mL of 0.0150M acetic acid, what is the Molarity of KOH solution
asked by Shay 
business
define foreign trade
asked by gabriella 
Chemistry
If a buffer solution is 0.160 M in a weak base (Kb = 2.3 × 105) and 0.550 M in its conjugate acid, what is the pH?
asked by Felicia 
chemisty
what volume will be occupied by 3.25mol of oxygen gas at 735mmhg and 25celcius?
asked by raw 
Chemistry
What volume(ml) of 8.0 M solution is required to make 134.3 ml of 1.2 M solution
asked by Linzy 
7th grade math/ geometry
how to name an angle in four ways?
asked by karizma 
Physics
The world record for revolutions per minute for an ice skater is 308 RPM, held by Natalia Kanounnikova. You can see a video of the spin here. When she starts the spin and her leg is extended, she's going somewhere between 12 revolutions per second. Let's
asked by Bob 
physical science chemistry
calculate the mass of sodium nitrate needed to make 550 ml of solution of concentration 0;2 mol.dmc to the power of minus 3
asked by Thuba 
Precalculus Test
I have a precalculus test coming up and I'm not really understanding how to do everything. Please help. 1. Find the angle betweem 0 and 2pi which is coterminal to the angle (7pi)/5. Now convert the angle you just found to degrees.
asked by marie darling 
life orientation
describe the negative impact of HIV on a person well being and society in general
asked by siphesihle 
Algebra
Two questions I need help with. Find the indicated partial sum using the information given. 1. a3=4/9, a7=9/64, S6 Determine wheater the infinite geometric series has a finite sum 2. 6+ 3+ 3/2 + 3/4 +.... 3. 49 + (7) + ( 1/7) +...
asked by Becca 
physics
Three charges are at the corners of a rectangle with side L1 = 0.04 m and L2 = 0.015 m as shown. If q1 = 1.3 microCoulombs, q2 = 2.8 microCoulombs, and q3 = 3.3 microCoulombs, what is the magnitude of the force on q2
asked by Anonymous 
physics
a motor cycle wheel has a diameter of 75cm.During a contest journey,the wheel makes 3000 complete revolutions.how many metres does d motorcycle travel.
asked by Anonymous 
Chemistry
What is the molarity of a sucrose solution that contains 76.7 g of C12H22O11 (342.34 g/mol) dissolved in 138.2 mL of solution
asked by Linzy 
math
how to find volume of a triangle
asked by VLB 
English
1. He wants to eat some delicious foods. 2. He wants to eat some delicious food. (Which one is correct? are both OK?) 3. He speaks a little English. 4. He speaks English a little. (Are both grammatical?)
asked by rfvv 
please help analytical chemistry
50 ml of a .1103M solution of formic acid is titrated with a .2511M NaOH. a) What is the pH before and NaOH is added? b) How many mL of NaOH solution must be added to reach the equivalence pt? c) what is the pH at the equivalence pt of the titration? d) If
asked by Lana 
Science
When you hold a ball above the ground it has kinetic energy. true false I think it is False  that is potential energy..right?
asked by Cassie 
HISTORY
how did the US support Diem's regime between 19541964?
asked by sarah 
Precalculus
Jessica deposited $785 into an account that pays 6.2% interest compounded continuously. How long will it take until Jessica has $1000?
asked by Megan 
jardan high. general science
water,anchorge,photosynthesis,mineral,food,support. The main functions of roots are { } and taking in { } and { }. The stems { } the other parts of the plant and transport { },{ } and around the plant.the leaves are the main part making { } by { }.
asked by will 
math
I need an expression written for the following logs using "sum, difference, or multiple of logarithms." a) log[base(2)] ((x^2)  9)/(x^3))^3 b) log[base(a)]5a^4 Hopefully they are clearly written. thanks. roberto
asked by Roberto 
mathematics
Need help with these: Write the expression as a logarithm of a single quality. a) 3log[base5](a) + 4log[base5](b)  2log[base5](c) b) 3log(2)(1/3)log((x)^(2)  1) I appreciate help.
asked by Tom 
Please help with Statistics
: Is Scanner Accuracy the Same for Specials? 176 miles on Wednesdays, 181 miles on Thursdays, and 108 miles on Fridays. He wonders if this evidence contradicts his belief in a uniform distribution of miles across the days of the week. Explain why it is not
asked by Bettie 
Chemistry
What mass(g) of hydrogen gas is produced by decomposing 179.1 g of water. Round your answer to one decimal place. 2 H2O(s) > 2 H2(g) + O2 (g)
asked by Linzy 
Chemistry
A 2.5% KCl solution is prepared by dissolving enough of the salt to give 181.4 g of solution. What mass (g) of water is required?
asked by Linzy 
Algebra please help!!
Find the number of terms in each sequence. 1. 2,6, 18,54,,,,,4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=3; find s8 4. E like symbol with a 10 on top. On
asked by Jenny 
Chemistry
Calculate the pH of a mixture containing 50.0 mL (0.50M) H2SO4 and 50.0 ml (0.50M) NaOH. I have no idea where to start!I need a walk through if possible! I've tried everything and I get the wrong answer every time!
asked by Moots 
math
many of the health fads were actually healthful. what does the word ''healthful'' mean? a not healthy b full of health c cause to be healthy d a state of health
asked by shohanur 
science P2
calc the volume of solution that contains 5,3 g of sodium carbonate if the solution has a concentration of 0,4 moldm (to the power of minus 3)
asked by Thuba 
Venn Diagram Help Please
If P(A)=.60, P(A/B)=.50, AND P(B)= .40, answer the following. draw a venn diagram for the probabilities of A and B.
asked by MELISSA 
physical science
The orbital velocity of an earth satellite in an orbit 400 mi above the earth?
asked by ben 
science
A biochemist used 10.000 grams of P32 in a test on plant growth but forgot to record the date of his experiment. When he measured the amount of phosphorus32 on another day, he found only 1.250 grams of the isotope remaining. If the halflife of P32 is
asked by Candace 
algebra
Find the number of terms in each sequence. 1. 2,6, 18,54,,,,,4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=3; find s8 4. E like symbol with a 10 on top. On
asked by Anonymous 
math
an oak tree grows 500 meters north of the bottom of a rectangular park. The oak tree takes up a space of a circular area with a radius of 2.5 meters .The center of the tree is 24 meters from the left side of the park .The park is 200 meters wide and has a
asked by aspasia 
Calculus
1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^0,009t,where 0 _< t _< 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people relocated
asked by Deeno 
algebra
soybean meal is 14% protein; cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280lb mixture that is 125 protein?
asked by Anonymous 
Applied calculas
3. a) Write out the limit definition for the derivative of y = xx. Attempt to solve it. b) Write out the limit definition for the derivative of the inverse trig function from question 2. Attempt to solve it. c) Discuss the value of implicit
asked by jack 
biology/ help please
which part of a neuron in the cerebellum of the brain is the most extensive in terms of anatomical developement? ahillock region bcell body cdendrites dnucleus eaxon my answer is axon
asked by joy 
math
I am a decimal number and when you multiply me by the number that is 10 times greater than me you get the answer 291.6
asked by Liam 
Geometry
ABC is a triangle with circumcenter O , obtuse angle BAC and AB
asked by Jacob 
Life orientation
I need help on this question?to discuss 5 ways in which the human or envinmental problem impacts on the community that causes ill health
asked by Constance 
physics
An object is placed (a)6cm (b)20 from a thin convex lens of focal length 10cm.determine the nature,position and magnification of the image in each case.
asked by Agu 
PHILOSOPHY
Who claimed that our subjection to pain and pleasure should be the foundation for our lives?
asked by James 
Algebra
The value, V< of Juan's investment portfolio can be modeled by the equation V=16t^2256t+16,000. When will Juan's investment portfolio be worth $16.576.00?
asked by Mark 
college Mathematics
Can someone please help me with this I am not getting the same answers as the examples in the book. U={1,2,3,4,5,6,7,8} A={1,2,3,4,7,8} B={1,2,4,5} Determine (A'UB')n(AUB)'
asked by Carol 
Trig
Find the exact values of sin 2 theta, cos 2 theta and tan 2thea using the double angle formula sin theta = 3/4 , pi/2 < theta < pi
asked by Jiskhaa 
geometry
On my last question, just posted, I asked what percent of the area of the target was shaded. The answer options were 5%, 10%, 20% or 80%?
asked by Sandy 
chemistry
1L of a .2M solution of Ethanoic acid is altered by adding 5.00g of sodium butanoate. what is the pH of the new solution
asked by Lana 
life orientation
what are 10 ways in which environmental health hazards impact negatively in one's life
asked by theo 
L.O
In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community of homelessness
asked by Nomfundo 
stat probability
The number of movies shown in different theatres on Saturday morning in a small city is given in the following. x P(x) 1 0.15 2 0.20 3 0.30 4 0.10 What is the mean distribution (or expectation) of the data given above?
asked by Lynn 
stat probability
According to an Internet posting, 65% of adults enjoy drinking soda. Choose a group of 12 adults at random. The probability that none of them enjoy drinking soda is?
asked by Lynn 
PHI103
If I move to Texas, I will need air conditioning. I don't need air conditioning. So I didn't move to Texas" is an argument form known as
asked by Krystal 
Physics
Recently there has been technological advances that allow for 3D imaging up to kilometers away from an object. This can be done by using laser light that bounces off an object. By measuring the time it takes the laser light to get to the object and back,
asked by Bob 
math
ted has 8 autographed baseballs. all together the baseballs are worth $200.00 explain why you do not have enough information to make a bar diagram to find the value of each baseball.
asked by help 
math
what number is greater than 55 but less than 60, is not an odd number, and when you add up the 2 digits, it equals 7?
asked by Paul 
chemistry
comment that enthalpy of nutralization is merely the heat of formation oneone mole of liquid water
asked by shaheer 
life orientation
identify and state the human and environmental factors causing HIV the under discussion
asked by siphesihle 
Math
Billy has a board that's six and 2/3 feet long. He cuts it into 12 equal pieces. How long is each piece?
asked by Pierre 
math
Considera compoound experment in which a nickel is flipped and then a quarter is flipped, need to know all the possible outcomes I came up with 4. correct? also need to know the probability of each possible outcome
asked by jill 
physics
Longitudinal waves in a spring have a wavelength of 50mm.The vibrator making them is vibrating at 5 oscillations per second. Calculate the speed of the waves.
asked by Percy 
math
solve each system of equations by graphing y=1/2x+5 y=3x2
asked by Alexius 
Algebra
I need some help with algebra I'm not sure how to get to the answer. Find the number of terms in each sequence. 1. a1=4 an=42 d=2 2. a10.3 an=36 d=2.1 3. 1/12, 1/8, 1/6, 5/24, 1/4,......9/8 Evaluate each sum. 1. There is an e like symbol that has a 15
asked by Jenny 
Math
I think this is geometry: There is a small box with a black frame around it. Inside the box, at the bottom, is an 8. Inside the box, to the right, is a 2. It looks like they are showing Length & Height. On the outside of the box, under the 8, there is a
asked by Sandy 
Physics, diffraction, interference, help!
3.Blue light (λ = 450 nm) shines on a diffraction grating that has 4000 lines/inch. A.Calculate the angle of the fourthorder image
asked by Jamie 
Physics
Mandy picks up a 25 N book from the floor to a height of 0.50m. How much work does Mandy do? (Hint use w=mg to find the force necessary to move the book)
asked by Jennifer Tran 
Math
Please explain how to solve this problem. 7x6/3 + 4(8+2x)
asked by Janie 
physics
how much energy is stored in a 9 volt battery rated at 10 a hour
asked by Susan 
math  please help me
65 chemical engineering students are from urban/suburban backgrounds. (Success is defined as a C or better in the course.) 52 of the 65 students succeeded. Another 55 students were from rural backgrounds; 30 of these students succeeded. A Is there good
asked by Sejul 
maths
Given: B={1},find no. of elements of P[P{P(B)}].
asked by anoynomous 
Science 
If you mixed 25.00g of salt in 100.00mL of water and it all dissolved, what would the concentration be in g/mL?
asked by Marco 
math
Math systems 3x2yz=20 xy=10
asked by chris 
Calculus
1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^0,009t,where 0 _< t _< 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people relocated
asked by Deeno 
English
While you're working in a sales office, the office manager says that the sales staff should try to use an empathetic tone when speaking with customers. In the word empathetic, the root means a.to give. b.to feel. c. to come d.to force.
asked by Bianca 
Life orientation
Identify and describe 3 enviromnmental health hazards that cause ill health, accidents, crisis, and disasters
asked by Portia 
biology/ help please
which part of a neuron in the cerebellum of the brain is the most extensive in terms of anatomical developement? ahillock region bcell body cdendrites dnucleus eaxon my answer is axon
asked by joy 
Math
The tempreture was negative two degrees Celsius before it dropped 10 degrees. What was the tempreture after the drop?
asked by Travius 
french
quelle heure est il?what is the time? 6:35,12:15,22:50,16:30,23:55 PLS HEEEEEEEEEEEEEEEEEELP
asked by gabriella 
Economics
Use the concepts of marginal cost and marginal revenue to derive an optimal capital budget for Company X, which has identified 7 possible investment projects and determined its cost of capital as shown below. Table A: Alternative Projects, Required
asked by Damian 
life orientation
name two institution organization that are invoved in supporting redress to these disasder in xenophobia
asked by Anonymous 
Algebra please help!!
Find the number of terms in each sequence. 1. 2,6, 18,54,,,,,4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=3; find s8 4. E like symbol with a 10 on top. On
asked by Jenny 
math
3m + 8 = m
asked by kemi 
maths
Given the identity x^42x^3+ax^22=x(x1)(x+1)Q(x)+4x^2+bx+c , where Q(x)is a polynomial, (i)state the degree of Q(x) (ii)find the values of a,b and c ,and hence state the remainder when x^42x^3+ax^22 is divided by x^3x .
asked by :) 
math
If 4x^36x^2+1=(x2)Q(x)+ax3 for all values of x ,where Q(x) is a polynomial in x ,find (i)the value of constant a (ii)Q(x)
asked by :) 
math
Maribel's city imposes a tax that is 40% of the state tax she pays. Her taxable income is $198.50 per week. Her state imposes tax at a rate of 5%. How much state and local tax is withheld from her weekly pay?
asked by kk 
electrochem
Between Mg and Zn which one is the anode and which one is the cathode? And between Mg and Fe which one is the anode and which one is the cathode? Please and thank you. im so stuck. :/
asked by shyanne 
finance Business
What I the beforetax cost of 8.4% and the firm uses 35% what is QM's weighed average cost of capital.
asked by Vernette 
Years ?
"In the early 1930s" what years are those like 19001930 right?
asked by Anon 
Algebra
I just cannot seem to get these two problems. Any help is greatly appreciated. Use the method of substitution to solve the system. xy= 4 5x − y + 19= 0 and y^2 − 4x^2 = 7 9y^2 + 16x^2 = 323
asked by jobe 
Albebra 2
A school wants to determine the average time it takes students to get to school. Every student coming off the bus is surveyed. What is the sampling method used? Does the sample have a bias?
asked by Lea 
hastings
In a heating curve, when is the temperature constant?
asked by priscilla 
Science
Describe what happens to body systems over time from infancy to adulthood to older adulthood. In your own words please. thank you guys ;)
asked by Sandy 
physics
Longitudinal waves in a spring have a wavelength of 50mm.The vibrator making them is vibrating at 5 oscillations per second. Calculate the speed of the waves.
asked by Percy 
Applied calculas
1. Consider the function y = xx (for x > 0). a) Why does the derivative rule for xn not apply? b) Why does the derivative rule for ax not apply? c) What are the four magic properties of logarithms? d) Take the ln of both sides. Use the properties of
asked by jack 
Physics
A current I=2 Amperes flows in a circular single loop coil of radius R=10 cm. (a) Evaluate the magnitude of the magnetic field (in Tesla) at a point P on the axis of the coil, and a distance z=5 cm away from the plane of the coil itself
asked by abdul rahman 
Chemistry
Which is the more concentrated solution: a solution made with .70 moles of NaCl in a .35L water or a 35g of NaCl in .75L?
asked by Alexis 
math HELP
A barrel contains 15 liters of water. After a boulder is dropped into the water, the reading on the barrel is 22 liters. What is the volume of the boulder?
asked by Anonymous 
Math probability
Assume that 60% of community college students are female. 1) if we pick 100 students at random justify why we can or cannot model this using a normal model. 2) find the probability that between 50 and 70 of the 100 students selected are female. 3) fidn Q1
asked by Katy 
life orientation
Ways in which humans or environmental problems impacts on the community
asked by kerry 
Health
In 1015 line critically discuss 5 ways in which the human or environmental factor problem impacts on the community. Provide relevant source to support your claims.
asked by Hulisani 
Chemistry
First, the question I'm given is: What is the pH of a 1.0 L solution containing 0.25M acetic acid and 0.75M sodium acetate ( Ka for acetic acid= 1.8x 105) So I took the log(1.8x105)= 4.74+log(.75/.25)= 5.22 pH But then I'm asked if .050 mol NaOH is
asked by Marcus 
life orientation
in 1015 lines critically discuss 5 ways in which the human or environmental problem impacts of pollution on the community
asked by patric 
Life orientantion
Describe 5 factors of Hiv
asked by Alice 
Algebra please help!!
Find the number of terms in each sequence. 1. 2,6, 18,54,,,,,4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=3; find s8 4. E like symbol with a 10 on top. On
asked by Jenny 
stat probability
An apartment building has the following apartments: 2 bdrm 3 bdrm 4 bdrm 1st floor 7 3 4 2nd floor 9 0 11 3rd floor 8 4 7 If an apartment is selected at random, what is the probability that it is a 2 bedroom apartment on the 3rd floor?
asked by Lynn 
Calculus
Implicit Differentiation. (x3)^2+(y+2)^2=25
asked by Henry 
math
You are developing a data base for Army tracked combat vehicles and you are normalizing the data base to base year 2006 dollars. What number would you enter into the data base for a vehicle budgeted at $1,725,000 in the FY08 appropriation? $1,604,505
asked by Shawn 
Physical science
According to the law of the conservatives of mass, if the products o a reaction have a mass of 64.0 g, then the total mass of the reactants:
asked by Yannie 
math
computer can do 1000 operations in 4.25 X 10 to the 6th power, how many operations can this computer do in an hour?
asked by sharon 
FRENCHHHH
conjugue les verbes a limparfait ou au passé compose guillame,quatorze ans,se rapelle son long sejour a l'hopital, quand il receivait la visite des animatuers de docteur clown,La premiere fois, j'ai cru(croire) qu'ils ______ (venir) d'une autre planete!
asked by Mia 
Applied calculas
Let y=〖tan〗^(1) x Rewrite it as an equation involving a trig function. Use implicit differentiation to determine an expression for y.
asked by jack 
math
A barrel contains 15 liters of water. After a boulder is dropped into the water, the reading on the barrel is 22 liters. What is the volume of the boulder?
asked by Anonymous 
social studies
what wiped out most of the indigenous population of australia
asked by Chloe 
science/math
A barrel contains 15 liters of water. After a boulder is dropped into the water, the reading on the barrel is 22 liters. What is the volume of the boulder?
asked by Anonymous 
chemistry
200g of HOCl is placed inside a 3L container and allowed to reach equilibrium. Find the equilibrium concentrations for all species. Given: 2HOCL (g) H20 (g) + Cl20 (g) when Delta H = +56 kJ and Keq = 11.11 at 25 C
asked by Anonymous 
Math
Cheryl counted all of her quarters and announced to her family that she had 32/4 dollars. How many dollars were her quarters really worth? A.32 dollars B.1 dollar 70 cents C.8 dollars D.128 dollars C
asked by Jerald 
accounting 205
compute the following items for lone pine company for 20x2, rounding all calculations to two decimal places when necessary
asked by tracy 
Mathematics
6x + 7 = 55 x = 8 Is this the correct answer to the following question? "I'm thinking of a number. If you multiply it by 6 and then add 7, you will get 55. What is my number?"
asked by Anonymous 
Math
I got an answer by trial and error but need to know how to set the problem up. Bob bought 10 movies for $153. The DVDs were $12 and the BluRays were $23. How many of each did Bob buy? 7 DVDs and 12 BluRays. Thank you for help.
asked by Joci 
MathStatistics
Assume that 60% of community college students are female. 1) If we pick 10 students at random justify why we can or cannot model this using a normal model. 2) Find the probability that 8 of the 10 students selected are female. 3) Find the probability that
asked by Jose 
mathematics
Given: B={1},find no. of elements of P[P{P(B)}].
asked by anoynomous 
Big MATH Help needed
An object at rest begins moving horizontally on the xaxis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be
asked by Rosie 
Chemistry
How many grams of Na2CO3 can be found in a 273 mL sample of 0.5 M solution
asked by Linzy 
Life orientation
Identify 3 environmental health hazards that cause ill health,accidents,crises, and disasters within the south african community and globally
asked by Relebogile 
stat probability
A coin is tossed 4 times. Find the probability that the 4th toss is a tail, given that the first 3 tosses were all heads.
asked by Lynn 
Algebra 1
y=3x+11 2x+y=1 method: __________ x= ____________ y= _____________
asked by ki 
math 118
On a math test a student where the mean is 50 and the standard deviation is 12, a student has a zscore of 0.83. What did the student score on the test?
asked by Stacey 
math
(8x^4 + 4x^2 + x)  (x + 10)(2ax^2 + 1) The expression is simplified to 8x^4  6x^3  56x^2  10. What is the value of "a" ?
asked by Boobear 
M.H.S
Marry claims that she can shoot a stone 50m vertically high using slingshot .what is the relationship of the height reached by the stone and initial velocity of it?
asked by Nation 
algebra
solve for x: x18 =64
asked by Anon 
math
Which one is need to happen in order for a shadow to occur?
asked by Anonymous 
chemisty
Calculate the volume of 4.0ml of nitogen gas at 754mmhg and 25 degrees celcius
asked by zane 
abc
How many elements are in the set {10,12,14,…,48,50}?
asked by Anonymous 
algebra
i need help solving this problem 58x26=8x230.6 please help need to see how u get the answer
asked by teanna 
physics
sound can not travel through
asked by Susan 
Calculus
what is the second derivative of (x^36x)^11 that is fully simplex
asked by Molly 
math
What is 88% of $33?
asked by Anonymous 
reading
what does the quote help us understand, or explain "reading furnishes the mind only materials of knowledge it is thinking that makes what we read"
asked by Anonymous 
math
a banquet hall area is in d shape of a rectangle 30m by 20m.part of d area is a concrete square 15m by 15m,the rest is covered with carpet.calculate the area of the carpet.
asked by gabriella 
Statistics help Please
The table below reports birth weight and whether the mother smoked for 189 pregnancies. If Smoking and Birthweight were independent, then we would expect the number of low birth weight babies born to smoking mothers to be: (???/???) * ??? = 23.1 The
asked by Bettie 
math
How do you write out 121.2 million
asked by TJ 
Life Orientation
3 environmental health that cause ill health
asked by pitso 
math
Manny is painting 5 cubes that are each 2 inches long. He needs to paint each cube twice. How much surface area total will he paint?
asked by SariGrace 
math
if less than half of the garden is planted with corn, then is it reasonable to estimate that 5/6 of the garden is planted with corn?
asked by amy 
to ms sue
do you how to do probality? if so can you look at my question
asked by Anonymous 
L0
5 factors that contribute to hiv
asked by Thama 
math
can u help me with my algebra
asked by khadaja 
math
38.61/39.00
asked by Anonymous 
Math
2 divide 69.28 plz give work too!
asked by James 
art
what are technical names
asked by gabriella