Questions Asked on
October 13, 2015

math
describe a real world situation that is modeled by dividing two fractions or mixed numbers.
asked by hazel 
Math
1. Write the converse of the following true conditional statement. if the converse is false, write a counterexample. If a < 10, then a < 15 a) if a > 10, the a > 15; false. Counterexample: a=12 and a
asked by Tim 
U.S. History
1. Explain why many Americans blamed Spain for the explosion of the USS Maine. A: Before the USS Maine exploded, the United States was trying to expand as a world power. Thus, many Americans blamed Spain for the explosion of the USS Maine because it gave
asked by Victoria 
chemistry
Consider the following balanced thermochemical equation for a reaction sometimes used for H2S production: 1/8 S8 (s) + H2 (g) ¨ H2S (g) ƒ¢Hrxn = 20.2 kJ (a)Is this an exothermic or endothermic reaction? (b)What is ƒ¢Hrxn for the reverse reaction?
asked by patrick 
science
1.)Ovaries contain A.)Sperms & produce estrogen B.) Sperms & produce testosterone C.)Eggs & produce estrogen D.)Eggs & produce testosterone 2.)The testes produce A.)Sperm & estrogen B.)Sperm & testosterone C.)Eggs & estrogen D.)Eggs & testosterone 3.)After
asked by Adri, 
Math
Is the equation true, false, or open? 4y+8=6y+3 a. True; the expressions are the same for all values of the variables. b. False; the expressions are never the same. c. Open; there is a variable.*** ***  My Answer
asked by Kaai97 
Math
Is the equation true, false, or open? 4y+8=6y+3 a. True; the expressions are the same for all values of the variables. b. False; the expressions are never the same. c. Open; there is a variable.*** ***  My Answer
asked by Kaai97 
physics
If 200 cm3 of tea at 95°C is poured into a 150g glass cup initially at 25°C, what will be the common final temperature T of the tea and cup when equilibrium is reached, assuming no heat flows to the surroundings
asked by jay 
Math
Let me know if I'm correct please For exercises 1 and 2 translate each phrase into an algebraic expression The difference of a number and sixteen n+16 n16
asked by AABBCC 
health
which of the following plays a role in determaning a persons weight (select all that apply) herdity activity level body mass index body composition
asked by jirehn bush 
Chemistry
what is the minimum mass of ice at 0.0C that must be added to 1.00kg of water to cool the water from 25.0C to 12.0C. the heat of fusion is 333J/g; specific heat capacities of ice = 2.06J/gK; the heat capacity of water is 4.184J/gK. I have no clue where to
asked by Michala 
algebra
0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. • Give you final answer in simplest form. (5 points) i already have the answer,0.000027
asked by cheyann 
physics
A softball having a mass of 0.25 kg is pitched at 95 km/h. By the time it reaches the plate it may have slowed 10%. neglecting gravity, estimate the average force of air resistance during a pitch. if the distance between the plate and the pitcher is about
asked by joyce 
English
Which Of The Following Sentences Uses The Subjunctive Mood Correctly? A: On Most Days, He Wished He Were An artist B: Knowing He Couldn't Get Far By Walking, He Took A Cab Instead*** C: Even When He Was Young, He Ate Too Much D:When He Saves Enough Money,
asked by Science NerdInTraining 
Calculus 1
Find the numerical value of each expression. (Round your answers to five decimal places.) (a) cosh 9 (b) cosh(ln 9)
asked by TayB 
Chemistry
Is the decomposition of lead(ii)nitrate a redox reaction? Equation with O.S. underneath 2Pb(NO3)2 => 2PbO + 4NO2 + O2 +2 1 +22 +42 0 I got all the o.s. but I am still confused as to whether or not this makes it a redox reaction. Do the individual
asked by Faith 
chemistry
A reaction mixture of 4.0 mL of 0.002 M SCN and 5.0 mL of 0.002 M Fe3+ is diluted to 10.0 mL with 0.1 M HNO3 to form the bloodred FeNCS2+ complex. The equilibrium molar concentration of the FeNCS2+ determined from a standardization curve is 1.5x10^4
asked by Anonymous 
Physics
The Asian Silver Carp is an invasive species of fish which has infested a number of American rivers. The disturbance of passing boats has been known to make these fish leap large distances out of the water. One such fish leaps with an initial velocity at
asked by Mariah 
math
Please check answers 1. Michael, a freelance editor, charges the rates shown in the table below to edit manuscripts. The cost per page increases as the quality of editing improves. Michael also gives a 5% discount if the entire amount is paid up front.
asked by Please Need Help Quickly 
Math
The five candidates for mayor in the town Smallville were members of these five parties: conservative, Democrat, Independent, Liberal, and Republican. Their names are Goshen, Hargreaves, Jensen, Liebowitz, and Nelson. From the information given, determine
asked by Angie 
math
maria thinks of a number between 30 and 35. it has a greater number of ones than tens. what is the number ?
asked by peggy 
Physics
When it comes to a ballistic pendulum, why would it be justified to say that the momentum in the horizontal direction is conserved over the collision interval? I think it's because of the law of conservation of linear momentum, but I feel like there is
asked by Stevie 
Math
You make cards and sell them for $2.50 each. It costs $1.15 to print each card. You also pay $50 for supplies. How many cards must you sell to meet the cost for making the cards (you break even)? Round up to the next whole card. A. 20 cards B. 37 cards C.
asked by Anonymous 
Chemistry
If 46.1 g Cu at 11.6 C is placed in 85.0 g H2O at 72.4 C, what is the final temperature of the mixture? (specific heat capacities: Cu: 0.385 J/gK Water: 4.184 J/gK)?
asked by Michala 
Algebra 2
Create an explicit equation for each recursively defined sequence below a1=17,an+1=an7
asked by Eric 
Geometry
Name the Property of Equality that justifies this statement: x = x Reflexive Property Symmetric Property Transitive Property Substitution Property Use the truth table to test the validity of the following argument. If you play varsity sports, then you are
asked by SkatingDJ 
Calculus
The height, s, of a ball thrown straight down with initial speed 32 ft/sec from a cliff 48 feet high is s(t) = 16t^2  32t + 48, where t is the time elapsed that the ball is in the air. What is the instantaneous velocity of the ball when it hits the
asked by nrosen 
Physics
A car is traveling around a horizontal circular track with radius r = 270 m as shown. It takes the car t = 66 s to go around the track once. The angle θA = 19° above the x axis, and the angle θB = 56° below the x axis. 1What is the magnitude of the
asked by Harman Preet 
Calculus 1
If tanh x=4/5, find the values of the other hyperbolic functions at x. sinh x= cosh x= coth x= sech x= csch x=
asked by TayB 
Stats
At a major International Airport, 0.49 of the flights arrive on time. A sample of 12 flights is studied. What is the probability that more than 3 of them arrived on time? Write only a number as your answer. Round to 2 decimal places (for example 0.24). Do
asked by Semmy 
Chemistry
Which of the following procedures involves a physical change in one of the substances? separating an oil from solution by cooling it
asked by Sara 
Stats
The probability that a randomly selected individual in a certain community has made an online purchase is 0.40 . Suppose that a sample of 13 people from the community is selected, what is the probability that at most 3 of them has made an online purchase?
asked by Semmy 
Math
Which equation is an identity? a. 7(9x+3)=9x4 b. 6m5=7m+5m c. 10p+6p=12p3(p2) d. 3y+2=3y2
asked by Kaai97 
U.S. History
1. How did the desire to expand into new markets help push the United States to extend its influence into the Pacific? A: The desire for new markets led to trade with Japan and the annexation of Hawaii. 2. How did Americans' opinions on overseas expansion
asked by Victoria 
Math
Is the equation true, false, or open? 4y+8=6y+3 a. True; the expressions are the same for all values of the variables. b. False; the expressions are never the same. c. Open; there is a variable.
asked by Kaai97 
Calculus 1
Find the linear approximation of the function g(x)=cube root(1+x) at a=0.
asked by TayB 
physics
a stone is dropped from the top of a cliff. it is seen to hit the ground 3.5 seconds later. how high is the cliff
asked by Anonymous 
science
a boat starts sailing on monday 10:00 at harbour A and sail 600 km due north.later it turns due east for a further 420 km to reach harbour B on tuesday at 12:00.what is the total distance travelled from A to B
asked by thabo 
Math
1.)If a ping pong falls from the top of a building that is 168 feet high, how many seconds will it take the ball to hit the ground? remember, the formula for distance is D=16t2 A.)1 B.)3.2 C.)10.5 D.)16
asked by Douglas 
Math
2/3>3/ number that makes the statement true.. I am confused
asked by Aj 
chemistry
Electrolysis of water produces hydrogen gas and oxygen gas, which can be collected over water: 2H2O(l) → 2H2(g) + O2(g) An electrolysis reaction at 735 mmHg pressure produced 25.00L of gas at 25°C; at which point, the vapor pressure of water is 23.76
asked by Lay 
Defective probability i need help
If 3% of electric bulb produced by a company are defective find the probability that in a sample 100bulbs (a) 0 (b)1 (c)2 (d)3 bulbs are defective??
asked by Collins 
history
Describe the primary economic activity for each of the three colonial regions: the New England colonies, the Middle colonies, and the Southern colonies. Explain how the geography of each region helped determine its economy. I don't know how to explain it
asked by Alexis 
Stats
Which of the following are binomial experiments? (more than one is possible) 1.) A store finds that 32% of people who enter the store will make a purchase. During a day, 50 people enter the store. The random variable represents the number of people who
asked by Semmy 
chemistry
Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday. Although the actual process also requires water, a simplified equation (with rust shown as iron(III) oxide (Fe2O3) is: 4Fe(s)+3O2(g)
asked by patrick 
Steve need your help probability
If 3% of electric bulb produced by a company are defective find the probability that in a sample of 100bulbs (a) 0 (b) 1 (c)2 d(3) bulbs will be defective???
asked by Collins 
Stats
In an elementary school, 29% of children wear glasses. Suppose that a random sample of 31 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
asked by Semmy 
U.S. History (Answer Check)
1. What was the purpose of the Open Door policy? A: The purpose of the Open Door policy was to allow each foreign nation in China to trade freely in the other nations' spheres of influence. 2. What were the arguments for and against establishing an
asked by Victoria 
Math
What is 516 tenths?
asked by Tobi 
Stats
Suppose that X is a binomial random variable with n=10 and p=.29 Find P(2). Write only a number as your answer. Round to 4 decimal places (for example 0.1489)
asked by Semmy 
LW Magnate School Aba. Nigeria
The wooden frame of a picture is 20cm long and 16cm wide. If the wood is 1.82cm wide, find the size of the picture. My working: The picture frame= L x W = 20x16= 320cm Wood frame= 1.82*2= 3.64cm 320cm less 3.68cm = 316.36cm.
asked by Treasure 
precal
find the constant c such that the denominator will divide evenly into the numerator x^4+10x^2+c/x+i
asked by crystal 
Math
The above function is given: f(x)= sqrt of (2x6)/(x8)  Sarah describes the domain as [3, ∞).  Describe why her domain is incorrect.  Provide the correct domain for the function. (I sort of understand this).
asked by Dave 
Math
What is 3.56 x 10 power to 5 in standard form? 356,000 3,560,000 0.00356 0.0000356****
asked by Shalee ^~^ 
Physics
The place kicker on a football team kicks a ball from ground level with an initial speed of 22.40 m/s at an angle of 15.0° above the horizontal. How far does the ball travel in the xdirection before it lands on the ground again? You may neglect air
asked by Mariah 
Math
2.)The volume of a box can be found by multiplying the length times width times height of a box(V=lwh).If the volume of a box is 1,300 cubic inches, & all its its dimensions are equal, what is the side length of the box in inches? A.)10.9 B.)36.1 C.)162.5
asked by Douglas 
Math
Idk what i have to do. Add or subtract. The question is Blake watch one sixth of a movie Friday three fifth on Saturday and the rest on Sunday. What fraction did he watch on Sunday
asked by Clarence 
Algebra 2
Create multiple representations of each line described below A line with slope 4 and y intercept 6
asked by Melissa 
math
Allana used Fraction 3 over 5 yard of fabric to make a scarf. Can she make 2 of these scarves with Fraction 1 and 7 over 10 yards of fabric, and why? No, because the quotient of Fraction 1 and 7 over 10 Division sign Fraction 3 over 5 is 1 and 1 over 50
asked by jeremiah 
English
Which of the following is an example of a runon sentence? Baseball is an amazing sport to play and to watch. Nothing beats the thrill of the sport on the diamond. I hope you like watching baseball, I really love it. If you don’t watch it, you don’t
asked by Guy 
U.S. History
1. Explain why Secretary of State James G. Blaine convened the PanAmerican conference in 1889. A: James Blaine convened the PanAmerican conference because he wanted to create a customs union between Latin America and the United States. A customs union
asked by Victoria 
Algebra
What is 0.68 written as a simplified fraction? My answer is 17/25. What makes the statement true? 7^2= My answer is 14. What is 308,745,538 is scientific notation? My answer is 3.1 x 10^8. What is the solution to (3 x 10^2) x (5 x 10^5)written in
asked by Essie 
Maths
I need some help with my maths questions please! What angle does the tangent to the curve y=x^4x^3+7x make with the positive direction of the xaxis at the point where x=2? Find any x values for which the gradient of the tangent to the curve y=x^23x1 is
asked by Dave 
Calc
A plane flying horizontally at an altitude of 2 mi and a speed of 420 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 5 mi away from the station.
asked by Callie 
Chemistry (Check)
Nitrogen combines with oxygen to form a variety of compounds. One of these compounds is called nitrous oxide or "laughing gas." What is the formula of nitrous oxide if this compound is 63.65% N and 36.35%O by weight? I got N2O
asked by Anonymous 
algebra
0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. I am re posting again because i need more help then what i got because i don't understand
asked by cheyann 
Geometry 1 question
Use the truth table to test the validity of the following argument. If you play varsity sports, then you are dismissed from school an hour early. You are dismissed from school an hour early. Therefore, you are a varsity athlete. valid invalid Sorry about
asked by SkatingDJ 
chem
A 3.00 L flask contains 6.00M H2, 6.00M Cl2, 3.00M HCl at equilibrium. An additional 15 mol of HCl is injected into the flask. What is the [Cl2] when equilibrium is re established?
asked by a 
math
A 2ft tall cardboard box standing next to an adult giraffe casts a 1 ft shadow. If the adult giraffe casts a shadow that is 7 ft long,then how tall is it. Answer 14 ft
asked by reana 
Finite
Assume that the pond contains 120 fish: 97 green, 22 yellow, and 1 red. A contestant pays $0.60 to randomly catch one fish and receives $0.40 if the fish is green, $0.95 if the fish is yellow, and $11.00 if the fish is red. How much (on average) does the
asked by Steph 
Chemistry
A water treatment plant adds fluoride ion to the water to the extent of 1.5mg F/L H2O. a)What is the molarity of fluoride ion in this water? b)If the fluoride ion in the water is supplied by calcium fluoride, what mass of calcium fluoride is present in
asked by Faith 
Math
Lisa can shovel her driveway in 30 minutes and Tom can shovel his driveway in 40 minutes. How long will it take them to shovel the driveway together?
asked by Michael 
Statistics
The zscores that bound the middle 35 % under the standard normal curve are z = a and z = a. Find the value of a. Write only a positive number as your answer. Round to two decimal places (for example: 0.81).
asked by Obi 
physcial science
8. which picture(s) would best represent atoms in the gas of a neon sign?
asked by sid 
algebra
6b^3 + 9b^2  12b Which represents the polynomial in factored form? (A) 3b^3 (2b^2 + 3b  4) (B) 3b (2b^2 + 9b^2  12b) (C) 3b^2 (3b^2 + 6b  9) (D) 3b (2b^2 + 3b  4)
asked by Dillan 
physics
A pendulum bob of mass 100g is pulled to a vertical height of 5m from the horizontal and released.calculate th maximum potiential energy. 2.The maximum speed of the bob
asked by kayumba 
Calculus
If a ball is thrown vertically upward with a velocity of 96 ft/s, then its height after t seconds is s = 16t^2 + 96t. What is the velocity of the ball when it is 128 ft above the ground on its way up?
asked by Callie 
Math
A rectangular box is to have a square base and volume of 78 feet cubed. If the material for the base costs $.30 per square feet, the material for the sides costs $.10 per square foot, and the material for the top costs $.20 per square foot. Determine the
asked by Josh 
math
these marbles are placed in a bag and two of them are randomly drawn what is the probability of drawing two pink marbles if the first one is placed back in the bag before the second draw the bag has 10 marbles.2 yellow.3 pink.5 blue
asked by Lindsay 
Math
These marbles are placed in a bag and two of them are randomly drawn. What is the probability of drawing 2 pink marbles if the first one is placed back in the bag before the second draw? There are 3 pinks, 2 yellows, and 5 blues.
asked by Lindsay 
Chemistry
I have a lab question that is asking if the soda ash in our analysis was NaHCO3 instead of Na2CO3, how would the volume of acid added change from (a) the starting point to the phenolphthalein end point? (b) the phenolphthalein end point to the bromocresol
asked by Rachel 
social studies
Which of the following statements does not describe a function of the confederation government? A. defend the country B. regulate trade between states C. maintain relationships with other countries D. set up a postal service between states I just need help
asked by lauren 
math
these marbles are placed in a bag and two of them are randomly drawn what is the probability of drawing two pink marbles if the first one is placed back in the bag before the second draw thebag has 10 marbles.2 yellow.3 pink.5 blue
asked by Anonymous 
chem
0.020 mol of each SO2 and O2 and So3 is placed in a 1.0 L flask and allowed to come to equilibrium. The equilibrium of [SO2] is found to be 0.0080M. What is the value of keq for the reaction: 2SO2+O2 2SO3
asked by a 
chem
Keq for the reaction 2HI H2 +I2 has a value of 1.85x 10^2 at 425 degrees celsius. If 0.18 mol of HI is placed in a 2.0 L flask and allowed to come to equilibrium at this temperature. What will the equilibrium of [I2} be?
asked by a 
Social Studies( I REALLY NEED HELP!!!)
How did technological advances in agriculture allow early civilizations to develop and sustain themselves over long periods of time? PLEEEEEASE HELP!!!!!!!! I AM STUMPED!!!!!
asked by Lilac Lilly Rose 
algebra
T=3u/e for u can someone please help
asked by jayson 
Chemistry
A sample of nitrogen gas is collected over water at a temperature of 23 degrees C. What is the pressure of the nitrogen gas if the atmospheric pressure is 795 mm HG? Anser in units of mm Hg.
asked by Lisa 
English
What does "lay upon sinner his sin" mean?
asked by Rachel 
Chemistry
There is a question on my assignment that's asks how many moles of atoms are in x mol of CO2 (and a few others). Let X represent 5x10^4. How do I do this? Teacher didn't really teach us this. I know in one mol of CO2 there is 2 moles of oxygen atoms, so
asked by Logan 
achimota secondary school
when a certain number is added to 11 and the result is multiplied by 3, the final result is 45. Find the number.
asked by wisdom 
Math
Do you need to regroup to find 7335?
asked by Cleo 
Geometry
The area of a triangle is 30cm^2. What is the base of the triangle if the height is 6 cm?
asked by Terry 
Math
What it is an estimate of the solution of the equation 6n+3=2? Use a table.
asked by Kaai97 
Math
David runs 8 meters in 1 second,16 meters in 2seconds,24 meters in 3 seconds and 32 meters in 4 seconds.Determine whether David's distance is proportional to the number of seconds he runs by graphing on a coordinate grid.explain your reasoning
asked by Amanda 
math
these marbles are placed in a bag and two of them are randomly drawn what is the probability of drawing two pink marbles if the first one is placed back in the bag before the second draw thebag has 10 marbles.2 yellow.3 pink.5 blue
asked by Lindsay 
Math
What is 0.68 written as a simplified fraction? My answer is 17/25. What makes the statement true? 7^2= My answer is 14. What is 308,745,538 is scientific notation? My answer is 3.1 x 10^8. What is the solution to (3 x 10^2) x (5 x 10^5)written in
asked by El 
Statistics
Find the zscore for which the area to its right is 0.65 . Write only a number as your answer. Round to two decimal places (for example: 0.81).
asked by Obi 
college algebra
SELLING PEANUTSsamuel operates a small peanut stand. He estimates that he can sell 600 bags of peanuts per day if he changes 50 cents for each bag. He determines that can sell 20 more bags for each 1 cent reduction in price. A. What would his revenue be
asked by Hugo 
Physics
A cargo plane is moving with a horizontal velocity of vx = +223 m/s at a height of y = 980 m above level ground as shown in the figure below when it releases a package. Ignoring air resistance, how much time will it take the package to reach the ground?
asked by Mariah 
Science
An air mass of 25°C with a dew point of 10°C has a starting elevation of sea level (0 meters) encounters a mountain range with a peak elevation of 3,000 meters above sea level. At what elevation is the Lifting Cloud Level?
asked by Kate 
English
What type of language is used in Carol Ann Duffy's "Elvis's Twin sister"? I know a bit of slang is used at the start but need to go more in depth. What is the tone of the Poem "Elvis's Twin Sister"?
asked by DJ Khaled 
Chemistry
Acetone is an important chemical solvent and is used at homes as a nail polish remover. Chemical analysis shows that acetone is 62.0%C, 10.4%H, and 27.5%O by mass. A. Determine the empirical formula of acetone. B. In a separate experiment, the molecular
asked by Anonymous 
Ochem
Could someone explain this? Thanks! Which of the following is a correct IUPAC name? a. 3bromo2chlorotoluene b. 6bromo4chlorotoluene c. 2chloro3bromotoluene d. 2chloro4bromotoluene
asked by Anonymous 
Chemistry
A compound frequently used as a hightemperature lubricant has the formula MS2, where M represents some metallic element. If this compound is 40.06% sulfur by mass, what is the identity of the metal M? I'm confused on how to figure this out.
asked by Anonymous 
chemistry
Use kinetic molecular theory to explain why approximating ideal behavior (PV=nRT) is fairly accurate only at low pressures and high temperatures. Use several concepts of kinetic molecular theory, not just math, to explain.
asked by Lay 
Math
I don't know how to order 5/12 4/6 3/8 from least to greatest
asked by Leya Santiago 
Umvuzo secondary school
Life orientation.three ways on how air pollution impact negatively to the health of people in your community or school?
asked by Phumla 
science
A drop of mass 2.0 g falls from a cliff of height 1.0 km. It hits the ground with a speed of 50.0 m/s. The work done by resistive force is 1. 10j 2. 12.50j 3. 15.5j 4. 17.50j solution: I think change in kinetic energy can give me work done. But how to
asked by 911 
Math
How could you use the product of 108 and 4 to find the product of 324 and 4
asked by Andrew 
Algebra
RICHARDS age in 15 years will be twice what it was 7 years ago. How old is richard
asked by Anonymous 
U.S. History (Check)
1. What was the purpose of the Open Door policy? A: The purpose of the Open Door policy was to allow each foreign nation in China to trade freely in the other nations' spheres of influence. 2. What were the arguments for and against establishing an
asked by Victoria 
biological psychlogy
identify one genetic method and explain how this method is used to study genetic factors providing two answers. I have the method: adoption studies iI'm just looking for a way to examples to explain how it is used
asked by sb350 
Algebra 2
Solve the following sequence systems algebraic ally x+2y=17 xy=2
asked by Eric 
PHYSICS
A skier is gliding along at 2.0 m/s on horizontal, frictionless snow. He suddenly starts down a 10 ∘ incline. His speed at the bottom is 15 m/s . a).What is the length of the incline? b).How long does it take him to reach the bottom? (Please show work)
asked by Meg 
college algebra
Throwing A ball: A ball is thrown vertically from ground level with an initial speed of 108 ft/s. A. When will the ball hit the ground? B. When will the ball be 180 ft above the ground? h=16t^2VT+H
asked by Hugo 
Calculus
A plane flying horizontally at an altitude of 2 mi and a speed of 420 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 5 mi away from the station.
asked by Callie 
Chemistry
In March 2007 a number of pets were sickened or killed by pet food contaminated with the chemical melamine, which is used in the manufacture of certain plastics. It is thought that the melamine was added to make a pet food additive appear to have more
asked by Anonymous 
precalc
prove the identity (1 + tan x) / sin x = csc x + sec x
asked by clarice 
Math geometry
Given AB intersects BD
asked by Samantha 
science
Write down images formed by the following mirrors. a)concave b)convex c)plain mirror
asked by Lavenia 
Chemistry
The apparatus contains methane and oxygen at a temp of 383K. Here is the reaction: CH4(g) + 2O2(g) > CO2(g) + 2H2O(g) solve for final pressures of all species and the final total pressure, For CH4 the volume = 1.164L the pressure = 6atm For O2 the volume
asked by Terry 
Physical Science
What happens to the kinetic energy of a snowball as it rolls across the lawn and gains mass?
asked by Katie 
chemistry
A 49.3 g sample of ethylene glycol, a car radiator coolant, loses 624. J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.42 J/gK)? 624= 49.3 x 2.42(T32.50) T = 37.73 = 38degrees is
asked by patrick 
math
An art teacher has 1 1/2 pounds of red clay and 3/4 pound of yellow clay. The teacher mixes the red clay and yellow clay together. Each student in the class needs 1/8 pound of the clay mixture to finish the assigned art project for the class. How many
asked by natosha 
maths
Suppose that a state university has to form a committee of 5 members from a list of 20 candidates out of whom 12 are teachers and 8 are students.If members of the committee are selected at random,what is the probability that the majority of the committee
asked by Bani 
ottawa river
Melissa collected three kinds of autumn leaf when she was out walking today el maple and oak she has two times as many Maple Leafs aslm lease and 5x as many oak leaf as Emily all together she has 32 leaves how many of each kind does she have I need to know
asked by hailey 
chemistry
A balloon is filled to 1.000L at the bottom of the Marianas Trench, where the pressure exerted on it is 1065 atm and the temperature is 2°C, and taken to Columbus, where the pressure is 0.967 atm and the temperature is 30.00°C. What is its new volume?
asked by Lay 
chemistry
Current can pass through salt solution but not through sugar solution ,why?
asked by sujal 
chemistry
It was found that argon effused through a membrane in 24 hours, and an unknown gas diffused through the same membrane in 22.1 hours. What was the molecular weight of the gas?
asked by Lay 
Chemistry
What would be the equation for NaOH + H2SO4 be? Would the porducts be H2O + NaHSo4 or H2O + Na2SO4? If it's the second one, which I think it is, where does that extra H go?
asked by Macy 
Math
What is 0.68 written as a simplified fraction? My answer is 17/25. What makes the statement true? 7^2= My answer is 14. What is 308,745,538 is scientific notation? My answer is 3.1 x 10^8. What is the solution to (3 x 10^2) x (5 x 10^5)written in
asked by Essie 
English (Check)
The title of my project says it all.. Women are most effected by the issues. The women right movement have been going on ever since the 1800’s. The natural rights for women should mean them getting equal pay, getting the same job as a man and women not
asked by C 
Algebra 2
3x/7+2/7=2
asked by Ken 
6 grade math
a manager turns on the restaurants two neon signs at the same time. both signs blink as they are turned on. one sign blinks every 20 seconds and the other blinks every 15 seconds. in how many seconds will they blink together again?
asked by janet 
math
Please check answers 1. Maria has a 25page manuscript. The equation below shows the relationship between the total cost of editing 25 pages, T, and the cost per page, c, if she gets the 5% discount. 25c  0.05(25c) = T Using the equation, what is the best
asked by Please Need Help Quickly 
english
You want to determine how many rainfall will fall in a certain time period. You collect rain as they fall from the sky onto a piece of bucket with an area of t square meters. If you want to determine the rainfall count as accurate as possible, you should
asked by jon 
Math
Allen has a piece of rope that is 84 inches long. He cuts off one piece that is 43 3/4 inches long and another piece that is 31 5/8 inches long. What is the total length of the remaining piece of rope after the two cuts are made?
asked by Aria 
science
A drop of mass 2.0 g falls from a cliff of height 1.0 km. It hits the ground with a speed of 50.0 m/s. The work done by resistive force is 1. 10j 2. 12.50j 3. 15.5j 4. 17.50j solution: I think change in kinetic energy can give me work done. B ut how
asked by 911 
Math
Which of the following equations is linear? A.y = x^2 + 5x 2 B.y = 2x + 5 C.y = x^3 + 1 D.y = x(x + 3)
asked by Cami 
science
A rock sample weight 60N on earth. what would be the weight of the same rock on moon?
asked by Lavenia 
Simple Interest
Quincy's property tax is $665 and is due on April 25. He does not pay until July 19. The county adds a penalty of 9.9% simple interest on unpaid tax. Find the penalty Quincy will pay. (Assume that there are 365 days in a year. Round to the nearest cent.)
asked by Anonymous 
college algebra
r75x^8/121y^12
asked by Hugo 
Statistics
Find the zscore for which the area to its left is 0.46 . Write only a number as your answer. Round to two decimal places (for example: 0.81).
asked by Obi 
Math
Who are some famous homosexual mathematicians?
asked by Jeremi 
science
a crew of astronauts leaves earth on a Monday , lands on the moon on a Thursday. they and on the side of the moon facing away from the earth. on what day would the astronauts be able to see earth from the moon, explain
asked by robin a 
Math
Identify the relation that is also a function. A. {(4, 2) (4, 3) (9, 3) (9, 3)} B. {(1, 0) (2, 3) (3, 1) (1, 5)} C. {(0, 1) (1, 2) (2, 3) (1, 2)} D. {(5, 4) (5, 1) (5, 3) (0, 5)} Can some one explain?? So i can do functions on my own ://
asked by Cami 
Revolution and frequency i need help physics
A spring makes 60 revolution in 15mins calculate the period and the frequency of the revolution??
asked by Collins 
physics
a 2.00 * 10^5 kg lunar landing craft is about to touch down on the surface of the moon
asked by ali 
physics
The ball is in the pool (point A) to the edge of which is an observer (point B). A minimum distance ball from the edge of the pool is 36 m (point C), and an observer to that point has to walk along the edge of 42 m. a) If the speed of walking along the
asked by ruza 
Global
Question: What is the importance of institution on human prehistory? My work so far: DEFINITION: Institution: A long lasting pattern of organization in a community. My Question: What does the definition mean when it says "pattern of organization in a
asked by Anonymous 
science
does water ionize to hydrogen and hydroxide
asked by sujal 
Algebra
I need to find the rule of the sequence. n 2 3 4 5 t(n) 75 1875 46875 1171875 I know the bottom is times 25, but I don't get how to do a rule that is t(n)=
asked by Lisa 
chemistry
What are diatomic elements?
asked by sujal 
precalc
prove each identity 1) (sec  cos) / tan = sin 2) (csc^2  1) / csc^2 = cos^2 3) (sin/csc)  1 = cos/sec
asked by clarice 
MATHS
Factorize :3x^2+3txxytt^2y
asked by HEJUMACLA 
Science
Hi!I wished you can help me with my science fair project.I don't know what to do or which to pick.Please help me.Any suggestion?I'm a fifth grader by the way.I appreciate it a lot. Endless Thanks, Marie
asked by Marie 
physics
A person pushes a 16.5kg shopping cart at a constant velocity for a distance of 36.6 m on a flat horizontal surface. She pushes in a direction 27.9 ° below the horizontal. A 48.1N frictional force opposes the motion of the cart. (a) What is the
asked by Kim 
math
it is greater than 35 and less than 45 if you add the two digits the sum is 5 write the number word
asked by Anonymous 
AP CHEM
I have multiple... 1) If a metal ore contains 23.1% pure metal, how many pounds of pure metal can be obtained from 38 pounds of metal ore? Answer in units of pounds. 2) For the reaction 3 F2 + Cl2 → 2 ClF3 , what is the maximum amount of ClF3 (92.4482
asked by Shannon 
marh
Greater then 43 less than 52 if u add the digits the sum is 8 write the number
asked by johne 
math
5^(3) 4/7 √5 3/8 0.003 Order the numbers listed from least to greatest. (1 point)
asked by jaysob 
physics
While John is traveling along a straight interstate highway, he notices that the mile marker reads 256 km. John travels until he reaches the 144 km marker and then retraces his path to the 173 km marker. What is John’s resultant displacement from the 256
asked by eric 
Algebra 2
X3/x=3/5
asked by Melissa 
geometry
Which statement best describes deductive reasoning?
asked by jarrod 
Practical english
To make the perfect snowman I will need lots of snow. Next, I will build three snowballs a small, medium and large. Then I will pile all three snowballs from the biggest to the smallest. After that I'll give him a carrot nose, eyes, smile and twig arms.
asked by Beatriz Cardona 
math
This is how the problem is like 2m^2p m=5 p= 4 I try to solve it like this. 2*5^2*4= 200 Somehow I'm still incorrect. Can someone help?
asked by Help 
English
“The Women's Rights Movement, 18481920. Web. 13 Oct. 2015. Is this considered a in text citation?
asked by C 
vvc
In a championship basket ball game,Paula made twice free throws as Maria .If the total number of free throws made by both women was 12 find how many free throws Paula made made?
asked by math 12 
Statistics
Find z 0.44 . Write only a number as your answer. Round to two decimal places (for example: 0.81).
asked by Obi 
math
There are 3 pink marbles, 2 yellow marbles, and 5 blue marbles in a bag. What is the probability of drawing 2 pink marbles?
asked by Laura 
trignometry
At 350 feet from the base of a cliff, a surveyor sights the top of it at an angle of 300 301. Find the cliff from horizontal.
asked by jessie 
MATHS PROBLEM
30% OF A BOOK IS READ,154 PAGES LEFT TO READ.HOW MANY PAGES ARE THERE IN THIS BOOK?
asked by HEJUMACLA 
Math
Mark has 37 markers. He found 58 more pencils. How manypencils foes Mark have now? Write a sentence that represents the problem. Use aa symbol to represent the unknown.
asked by Hunter 
math
An ant weights about 2*10 to the fifth power pounds. There are about 1*10 to the 15 power ants on Earth. How many pounds of ants are on Earth
asked by Anonymous 
Algebra 2
x3/x=3/5
asked by Eric 
school of the nation
Marie gets $500 pocket money each day,she spends $300 each day. Write fractions to show the money spent and money left: (1) at the end of 1 day (2) at the end of 1 week
asked by martin 
Math
4x(x2)=(2x+1)(2x3) need help to solve
asked by Ben 
Science
which of the following includes the variables needed to demonstrate momentum A. mass and velocity B. mass and acceleration C. time and velocity D.velocity and acceleration I think the answer is A
asked by Animegirl 
programing in basic
the computer will accept what statement, if four statements are entered with the same number?
asked by sharon 
precal
find the value of K such that (x+1) is a factor of x^3kx^2+x+5
asked by crystal 
maths
meeta and vikas each ate 5/12 parts of a cake. what portion of the cake was left?
asked by shehzad 
Chemistry
How many hydrogen atoms are in a 15.00 mg sample of glucose? (C6H1206)
asked by Debbie 
st Francis Methodist math
26 200correct to 3 significant figures. What is the smallest possible number
asked by Anonymous 
Calc
6e^3t=9e^2t
asked by Julie 
Science
which of the following includes the variables needed to demonstrate momentum A. mass and velocity B. mass and acceleration C. time and velocity D.velocity and acceleration I think the answer is A
asked by Animegirl 
algebra
Using the table below, find how long it will take the jet to travel 5060 miles. Hours 1 2 3 4 Miles 460 920 1380 1840 Can some one help me, I do not understand.
asked by Caylie 
african studies
what is the shape of the Rift Valley
asked by neta 
MATHS
On a building plan,the lenght of a 65mlong buliding is 13cm.Another building on the same plan has lenght 55mm.What is the actual length of this building?
asked by HEJUMACLA 
Math
Which equation has no solution? a. 7v+2=8v3 b. 3x5=3x+8x c. 4y+5=4y6 d. 7z+6=7z5
asked by Kaai97 
chemistry
The density of an elemental gas is 2.14 kg/m3 at STP. What is its approximate molecular weight?
asked by Lay 
Mathematics
The probability of selecting a banana from a bowl containing 5 bananas and 5 oranges
asked by Siphosethu hlatshwayo 
math
A caterpillar dump trunk is used at the oil sands near Fort McMurray Alberta. The diameter of one tire is 4m. Part A) find the circumference Part B) how many complete rotations does a wheel make on a 2 km long road?
asked by salma 
Math
James have $6 in dimes and quarters if he has 4 fewer quarters then dimes then how many of each coins does he have
asked by Tim 
MATHS
A)(2J)to the power of 1 B)(p/6)to the power of 3
asked by HEJUMACLA 
Calculus
6e^3t=9e^2t
asked by Julie 
elementary set theory
Let Bi(2i,i1) where I is the element of the integer,find (B2 U B4)
asked by Odion elect 
chemistry
Dr. Bob.. 630.24 kj was marked wrong...it said hint: make sure to carry out dimensional analysis........ ÄH value refers to the amounts of (moles) of substances and their matter in that specific equation. help....please....
asked by patrick 
Finite
One coin is fair and one is weighted so that Pr[H]=211. You randomly select one of the two coins, and flip it 5 times, noting the result of each flip. What is the expected number of heads?
asked by Dana 
Surd help plz
You ar given that root(59.3) = 7.70 and root(5.93) = 2.44. Find root(59300)???
asked by Collins 
biological psychlogy
what would be two reasons justifying the use of animals in physiological research. I need two examples that i could possibly argue
asked by sb350 
american government
constitutional scholars have pointed out there is an inconsistency in justice marshall's opinion with respect with what the constitution specifically provided. whats the inconsistency?
asked by Anonymous 
math
the circumference of a circle is 30 find its area
asked by vedant 
ghobnaton
Tone and couplet of poem the tuft of flowers by Robert frost
asked by khauram 
Math
24,87.67+ ? into the nearest dollar
asked by Jared 
Algebra 2
Solve the following systems algebraic ally X+2y=17 Xy=2
asked by Ken 
project management
Question (6) chapter 8 pages (286  287) here is what my instructor sent regarding the Q 6:                                    This exercise is similar to the resource scheduling issues you face in SIM Project for the
asked by asd 
Math
1/4 x 1/2 1/8*** 1/8 1/4 1/2
asked by Cami 
science
what is the main difference between lava and magma?
asked by Kelly 
Algebra
1. Is 2 a solution of the following equation? 2 = 10 – 4y Please explain this to me!
asked by Derpy Pegasus