Questions Asked on
March 21, 2013

Geometry
For diagonals of square Abcd intersect at e . If ae =2x+6 and bd =6x10 find ac
asked by Alice 
Geometry  semicircle inside isosceles triangle
Isosceles triangle ABC has sides of length AB=AC=25 and BC=40 . Find the area of a semicircle inscribed in triangle ABC with diameter along BC . Please help I do not know how to start....
asked by Knights 
math
a cube with 2 in sides is placed on a cube with 3 in sides. then a cube with 1 in sides is placed on the 2 in cube. what is the surface area of the three cube tower?
asked by j 
algebra
4. Which of the following is true about a trend line for data? (1 point) The minimum data point always lies on the trend line. Every data point must lie on the trend line. The trend line describes the pattern in the data if one exists. The trend line
asked by Philly 
Chemistry
what is the Ka for ethylammonium cation,C2H5NH3^+, at 25 celsius?(Kb for C2H5NH2=4.7x10^4 at 25 Celsius)
asked by Bb 
chemistry
Ignoring activities, determine the molar solubility of copper (I) azide (CuN3) in a solution with a pH of 10.83. Ksp (CuN3) = 4.9 × 10–9; Ka (HN3) = 2.2 × 10–5.
asked by Jackie 
Geometry
Find the sum of the measures of the exterior angles of a convex 39gon?
asked by Mariel 
MathAlgebra
What is the answer to the riddle: why does the us mint need a new building?
asked by Monica 
physics
The launching mechanism of a toy gun consists of a spring of unknown spring constant, as shown in the figure below. If the spring is compressed a distance of 0.160 m and the gun fired vertically as shown, the gun can launch a 21.0g projectile from rest to
asked by Anonymous 
Algebra
Identify the sequence as arithmetic, geometric, or neither. Explain your answer. 1.6, 0.8, 0.4, 0.2, . . . I think it is geometric  divisible by 1/2...? Is that right?
asked by cassie 
The Odyessy
1. briefly summarize the conflict between odysseus and the cyclops. 2. in what ways are the sea and the role of poseidon important? please i need help with this questions.
asked by ME! PLZ HELP 
Math 109
How many ways can a teacher give 5 different prizes to 5 different of her 25 students
asked by Darcy 
Geometry  Circles and tangents
Two circles of radius 1 are externally tangent at Q . Let PQ and QR be diameters of the two circles. From P a tangent is drawn to the circle with diameter QR , and from R a parallel tangent is drawn to the circle with diameter PQ . Find the distance
asked by Knights 
chemistry
Air trapped in a cylinder fitted with a piston occupies 145.7 mL at 1.08 atm pressure. What is the new volume of air when the pressure is increased to 1.34 atm by applying force to the piston?
asked by tess 
Algebra
Find the first four terms of the sequence represented by the expression. 3n + 5 A.5, 8, 11, 14 B.8, 11, 14, 17 C.3, 6, 9, 12 D.0, 8, 11, 14 I think it is C...?
asked by cassie 
business math
Oprah Winfrey ha closed on a 42 acre estate near Santa Barbara California for $50,000,000 If Oprah puts down 20% down and finances at 7% for 30 years what would be her monthly pay payment.
asked by k 
Chemistry
How many grams of bromine are required to react completely with 37.4 grams aluminum chloride?
asked by Alejandra 
Chemistry
the ka of hypochlorous acid hclo is 3.5 x 10^8. What is Kb for the hypochlorite ion?
asked by Bb 
Physics
A conical pendulum is formed by attaching a 0.60kg ball to a 1.0m long string, then allowing the mass to move in a horizontal circle of radius 30cm. 1. What is the tension in the string 2. What is the ball's angular velocity in rpm?
asked by Leanna 
physics
a student plucks a guitar string and the vibrations produce a sound wave with a freuency of 650 hertz. Calculate the wavelength of the sound wave in air at STP.
asked by Anonymous 
Chem 151
The atmosphere in a sealed diving bell contained oxygen and helium. If the gas mixture has 0.200 atm of oxygen and a total pressure of 3.00 atm, calculate the mass of helium in 10.0 L of the gas mixture at 40 degrees Celsius.
asked by Double checking ans 
Math (Geometry)
Given: ABCD is arhombus. prove:AC bisects angle BAD and angel BCD.
asked by bhfewbidsukj 
algebra
The letters in the word Paris are written on slips of paper and placed in a bag. Each letter will be put back after it is drawn. What is P(r, then vowel)?
asked by Hays 
Circle Geometry  chords in a circle
Let PQ, RS , and TU be parallel chords of a circle. The distance between chords PQ and RS is 4, and the distance between chords RS and TU is also 4. If PQ = 78 TU=50 , then find RS. how to do this? Draw some lines?
asked by Knights 
math problem
A piece of wire 24 cm long is cut into two pieces and each piece is bent to form a square . Find the lenght of each piece of wire in order to maximize the sum of the area of the two squares?
asked by mark 
Genetics
In Drosophila melanogaster, the genes for purple eyes (pr) and curved wings (c) are on the same chromosome. The recombination frequency between pr and c is roughly 20%. Both the purple eyed and curly winged phenotypes are recessive to the wildtype (+)
asked by qwerty 
dhs
Amanda bought a car for $8,500. Her loan was for five years at a 4.6% interest rate. How much will Amanda pay for her car total, including interest?
asked by madog 
chemistry
Determine the molar solubility (S) of Zn(CN)2 in a solution with a pH = 4.91. Ksp (Zn(CN)2) = 3.0 × 1016; Ka (HCN) = 6.2 × 1010.
asked by Jackie 
Spanish: check answers
Questions: 3. Paella is a dish like tacos. a dish made of rice, seafood, and vegetables eaten in Spain. another name for enchiladas. 4. Fastfood restaurants in the Spanishspeaking world are generally very popular with adults. look similar to the ones in
asked by Jade 
Physics
A 4.10 m long, 590 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 kg construction worker stands at the far end of the beam. What is the magnitude of the torque about
asked by Zoe 
physics
Why is an echo weaker than the original sound? 1. The echo has a shorter wavelength than the original sound due to the reﬂection. 2. The echo has a smaller amplitude than the original sound because sound spreads and its intensity decreases with distance.
asked by hannah 
language arts Ms. Sue please
1. Which of the following is not a function of a good thesis statement? (1 point) to establish the credibility of the author to focus the reader's attention on the main idea to present an interesting quote about the topic 2. Which of the following is the
asked by Delilah 
Chemistry
A sealed 1.0L flask is charged with .500mol I2 and .500mol Br2 and an equilibrium reaction esues: I2(g)+Br2(g)=2IBr(g) When the container contents achieve equilibrium, the flask contains .84 mol of IBr. What is the value of the eqilibrium constant? (K)
asked by Jonah 
Algebra: check my answer
A right triangle’s legs are 3 and 4 meters long. What is the measure of the angle adjacent to the 4meter leg to the nearest tenth of a degree? A.) 35.9° B.) 36° *C.) 36.9° d.) 37.5° Thank You.
asked by Jack 
college stats
iN manoa Valley on the island of Oahu Hawaii the annual rainfall averages 43.6 inches with a standard diviation 7.5 inches. for a given year, find the probability that the annual rainfall will be..(solve for a,b,and c) show work a)more than 53 inches
asked by luvmmmath 
Chemistry
Why does the color of Methyl Orange change at all in he presence of buffer components?
asked by Jonah 
geometry
A wall pennant is in the shape of an isosceles triangle. Each of the two equal sides measures 18 in more than the third side, and the perimeter of the triangle is 54in. What are the lengths of the sides of the pennant?
asked by Laura 
Math 109
How many ways can a teacher give 5 different prizes to 5 different of her 25 students
asked by Darcy 
programming
Write a program that displays the recommended weight, given the user’s age and height (cm). The formula for calculating the recommended weight is recommendedWeight = (height – 100 + age / 10) * 0.90 Define a service class named Height and include an
asked by happy 
physics
In Example 5.8, we investigated the apparent weight of a fish in an elevator. Now consider a 72.0 kg man standing on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.20 m/s in 0.80 s. It travels with
asked by Pritesh 
Science
Assume you can heat water with perfect insulation (all the heat from combustion of ethanol is transferred to water). What is the volume of ethanol required to heat 100 mL of water by 10 degrees C? (You will need to look up density of ethanol, specific heat
asked by Alexandra 
Biology
What three things must be known to perform radiometric dating?
asked by Candy 
Chemistry
Identify the atom that increases in oxidation number in the following redox reaction. 2MnO2 + 2K2CO3 + O2 2KMnO4 + 2CO2 *A.) Mn B.) O C.) K D.) C Please show work Thank you.
asked by Jade 
PreAlgebra
P.S  I really need help please help me with this, please i try and still i can not do this please!!!!!! :( :( :( :( :( The table below shows the percentage of households that own a microwave in different countries. Construct a stemandleaf plot of the
asked by HI, I'M NEW HERE SO I NEED HELP CAN'T DO THIS ! :( 
algebra, math
A piece of wood that is 9 feet long is cut in half legthwise. Each half is then cut legthwise into six congruent pieces. What is the length of each of the twelve small pieces of wood? Show your work.
asked by syram 
maths
Find the sum of all 3digit positive numbers N that satisfy the condition that the digit sum of N is 3 times the digit sum of N+3. Details and assumptions The digit sum of a number is the sum of all its digits. For example, 1123 has a digit sum of
asked by rohit 
Physics
6. If your boat weighs 1200 N, how much water will it displace when it’s floating motionless at the surface of the lake?
asked by Anonymous 
math
Which equivalent fraction would you have to use in order to add 3/5 to 21/25
asked by Alex 
mathematics
evaluate each of the following..sin 130.tan 60/cos 540.tan 230.sin 400
asked by Jossie 
Algebra: Please help
Solve for B: square root b^4/25 = 4. A.) 2 B.) +/ 5 square root 2 C.) 3 D.) +/ 2 square root 5 I don't know how to do these so please show your work. Thank you.
asked by Jack 
AP chemistry
1). In a titration 20 mL of 0.100 M of HCl is added to 50.0 mL of 0.150 M of ammonia. A). What is the pH of NH3? B). What is the pH of the resulting solution? HELP :(
asked by Amanda 
Chemistry
Which of the following salts is NOT more soluble in acidic solution than in pure water? A. ZnS B. AgCN C. Ba3(PO4)2 D. ZnCO3 E. BiI3 The answer is E, but I don't know why or how I would go about answering a question like this. What would I have to consider
asked by Jonah 
Chemistry
What is the reducing agent in the following reaction? 2NA + 2H2O 2NaOH + H2 A.Na B.H2O C.NaOH D.H2 I think it is B...?
asked by cassie 
physical science
A hot air balloon is rising upwards at a constant velocity of 5 m/s . When the balloon is 60 m above the ground , a sand bag is released from it and allowed to free fall . Ignore the effect of air resistance and assume that the balloon continues to move
asked by Sandile 
Physics
A man drags a 71.5kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. The crate is tilted 24.5° above the horizontal, and the strap is inclined 63.0° above the horizontal. The center of gravity of
asked by A 
math, HELP ME PLEASE!
A polling company took 5 polls in the week before an election. It showed that a mayoral candidate would get 66%, 56%, 55%, and 63% of the voters. That candidate received 64% of the total votes during the actual election. Find the percent error in the
asked by syram 
PHysics
The sound emitted by bats has a wavelength of 3.45 mm. What is the frequency in air? The speed of sound in air is 343 m/s.
asked by Lindsey 
chemistry
Condition Pressure Volume Temperature Comment initial 1.0 atm 22.4 L 273 K 1 mole of N2 gas fills the tank. final 3.0 atm 22.4 L 273 K 2 moles of O2 gas have been added to the 1 mole of N2 gas in the tank. Key Questions 7. What was the initial pressure
asked by alex 
math
In slow pitch softball the ball is pitched in an underhand motion. A batter in a softball game is pitched a ball that has initial vertical velocity of 35 feet per second. a. Write an equation for the height h (in feet) of the ball as a function of the
asked by mo 
Chemistry
How many moles of ethyl alcohol C2H6O are in a 25.0 sample? How do I calculate?
asked by Yaneth 
AP Calc Help!!
Let f be the function satisfying f'(x)=x√(f(x)) for all real numbers x, where f(3)=25. 1. Find f''(3). 2. Write an expression for y=f(x) by solving the differential equation dy/dx=x√y with the initial condition f(3)=25. Please show work and reasoning.
asked by Jess 
AlgebraMultiple choice
Hello, I have some practice math I'm working through and I'm unsure about the answer. I will also put what I got. Thanks for the help. 1. Solve using any method and identify the system as consistent, inconsistent, or dependent. 2x+y=8 2x+2y=8 A.) (4,0);
asked by Kris 
physics
A man drags a 71.5kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. The crate is tilted 24.5° above the horizontal, and the strap is inclined 63.0° above the horizontal. The center of gravity of
asked by A 
physics impulse
A 2 kg cart rolls across the floor and runs into the wall and sticks. Before the collision the cart has a velocity of 4 m/s in the x direction. The collision took place in 0.1 s. 1) What was the cart's momentum before the collision? 2) What was the cart's
asked by Isis 
Chemistry
What is the pH of a solution that is .060M in potassium propionic and .085M in propionic acid? Ka=1.3E5 for the acid. The answer is +4.73 but I don't know how to go about the problem. I thought that the potassium propionic was reacting with the acid to
asked by Jonah 
Spanish: Check my answer
10. Fill in the blank with the correct form of the verb: ellos/salir. Ellos ______ Is it: Ellos salen or Is it: Ellos salieron Thank You.
asked by Jack 
Math
105 91 82 59 97 72 72 88 81 What is the mode of these scores? A.46 B.72 C.82 D.83 B? 2.The test scores of 1 students are shown below 95 63 78 86 84 86 91 95 72 93 87 74 What is the median score of the 6 highest grades? A.86 B.91 C.92 D.93 C? 3.The test
asked by Jerald 
math
a travel mug is shaped like a cylinder. it is 9cm wide and 15cm tall. find its volume to the nearest tenth. use 3.14 for pie.
asked by Anonymous 
math
The hypotenuse of a right triangle is 1 cm more than twice the shorter leg, and the longer leg is 9 cm less than three times the shorter leg. Find the lengths of the three sides of the triangle..
asked by nikki 
math
covert the compound statement into words. Let r="the food is good" p="I eat too much" q=I'll exercise." I'll exercise if i don't eat to much. 1.~p^q 2.~(p>q) 3.~p>q 4.~p,q
asked by nike davis 
Chem 151
A CaCO3 mixture weighing 2.75 grams was treated with 9.75 mL of 3.00 M HCl to liberate CO2. After the CO2 was liberated, the mass of the mixture decreased to 2.621 grams. Determine the mass of CaCO3 present in the mixture.
asked by Double checking ans 
Chemistry
What is PAV glue?
asked by Anonymous 
aqueous solution
Write the positive and negative ions that result when the following compounds are dissolved in aqueous solution: Na2S (aq): (NH4)2CO3 (aq): K2SO4 (aq):
asked by Annette W 
Algebra Multiple Choice
Hello, This is the last of questions I have for my practice assignment. Again I will put what I got. Thanks for your help. 1.) Solve the system using substitution. Write answer as an ordered pair. 4x+2y=8 5x2=y A.) First equation (2,8) B.) Second
asked by Kris 
Physics
In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 510.0 kHz. When the search coil (inductor B) is brought
asked by Elizabeth 
Chemistry
Calculate the pOH of an aqueous solution of 146.6 ml of 0.000625 M HBr(aq) after dilution to 850 ml.
asked by Mary Ann 
Chemistry
Suppose that 10.9 mL of HNO3 is neutralized by 83.9 mL of a 0.0021 < solution of KOH in a titration. Calculate the concentration of the HNO3 solution. Answer in units of M
asked by Laura 
Chemistry
Suppose that 10.9 mL of HNO3 is neutralized by 83.9 mL of a 0.0021 < solution of KOH in a titration. Calculate the concentration of the HNO3 solution. Answer in units of M
asked by Laura 
Spanish: Translate please
Translate these please: una zanahoria una manzana una uva una fresa una zanahoria una manzana unas uvas una fresa una manzana la lechuga una papa una cebolla el refresco el jugo la leche el té Thank You.
asked by Jack 
algebre
The number of customers that visit a local small business is 51,200 and has been continuously declining at a rate of 3.8% each year. What is the approximate number of customers that visit the business in 14 years?
asked by brit 
physics
A small 0.482kg object moves on a frictionless horizontal table in a circular path of radius 0.77 m. The angular speed is 6.18 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the
asked by A 
Chemistry
Calculate the pOH of an aqueous solution of 146.6 ml of 0.000625 M HBr(aq) after dilution to 850 ml.
asked by Mary Ann 
physics
If the intensity of a person’s voice is 3.6×10−7 W/m2 at a distance of 2.1 m, how much sound power does that person generate? Answer in units of W
asked by hannah 
chemistry
What is the solubility of AgCrO4 (Ksp= 9.0 x 10^12) in distilled water?
asked by Jen 
English
5. Which of the following sentences from the article is an example of hyperbole? (1 point) A.They had proved something amazing: Ivorybilled woodpeckers still graced the planet. B. According to experts, they need large areas of oldgrowth forest, including
asked by Bunny 
chemistry
What is the chemical equation of methylamine with CuSO4?
asked by Mikha 
7th grade math
A company needs to packages 80 cubic feet of chemicals in to a plastic container, find the whole number dimensions of a container that would use the least amount of plastic
asked by coleton 
Physics
A dock worker loading crates on a ship ﬁnds that a 18 kg crate, initially at rest on a horizontal surface, requires a 71 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 46 N is required to keep it
asked by Aaron 
Spanish
10. Fill in the blank with the correct form of the verb: ellos/salir. Ellos ______ Is it: Ellos salen or Is it: Ellos salieron Thank You.
asked by Jack 
math
How many different ways can an elf climb a tenstep staircase if he or she climbs only one of two steps a time?
asked by Brian Taylor 
Chemistry
The solubility of iron(III)hydroxide is 4.39E10M. What is the Ksp for this compound? I don't know how I would go about this problem.
asked by Ezra 
math
a launched rocket has an altitude, in meters, given by the polynimial h+vt4.9t^2 where h is the height, in meters, from which the launch occurs, at velocity v in meters per second, and t is the number of seconds for which the rocket is airborne. If a
asked by pam 
English
1. To come up with possible solutions to a problem is referred to as: A. decision making. B. concept mapping. C. critical thinking. D. problem solving. is it D 2. "Should I apply for a job or go for an internship?" is an example of which stage in the
asked by Amy 
Chem 132
The rate constant for this firstorder reaction is 0.650 s–1 at 400 °C. A> Products How long (in seconds) would it take for the concentration of A to decrease from 0.660 M to 0.350 M?
asked by Unknown 
Chem 201
Determine the empirical formula for a compound containing only c,h given that combustion of 1.50g sample of the compound produces 4.71g CO2 and 1.93g H2O
asked by Anonymous 
Math
How many ways can the letters in WILDCAT be arranged if the vowels cannot be next to each other?
asked by Parul 
Chemistry
Calculate the pOH of an aqueous solution of 146.6 ml of 0.000625 M HBr(aq) after dilution to 850 ml.
asked by Mary Ann 
statistics
The frequency of color blindness in the Caucasian American male population is about 8%. If a random sample of 125 individuals is chosen from this population, what is the probability that 510 individuals in the sample are color blind?
asked by Cheryl 
mathematics
The circle x22x+y24y4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)(x8;y6) of
asked by Jossie 
organic chemistry
which of the following represents the best strategy for synthesizing 2butanol, CH3CH2CH(OH)CH3 a) CH3CH=CHCH3 + [H30]+ b) CH3CH2C (triple bond) CH + [H3O]+ c) CH3CH=CH2+ [CH3OH2]+ d) CH3C (triple bond)CCH3 + [H3O]+
asked by michelle 
ecomomic
The price of butter increases. In 23 sentences, explain how a price increase in butter affects the demand for margarine.
asked by cassie 
PHYSICS
A 10 g bullet is fired horizontally into a 1 kg block of wood hanging from a 1 m long string attached to the ceiling, getting stuck in the block. Due to the impact, the block then swings on the string to a maximum angle of 60 degrees with respect to the
asked by Anonymous 
Physics help
A 90 kg parachutist in free fall has an acceleration of 6.8 m/s^2. What is the frictional force provided by air resistance when she is accelerating at this rate? For this question i got 612N but the text book answer says it is 270N. Pls help!! I'm confused
asked by Ted 
English 3
The subject of "Game" can best be described as: a. survival of the fittest b. the dehumanization of humans c. the profound childishness of adults d. the need for discipline in the armed forces I picked a
asked by Dalton 
Genetics
Mendel also studied the trait of flower color. Some plants had white flowers, while others had purple flowers. Consider the following cross: P generation: Plant with purple flowers= ____ Plant With purple flowers= ____ F1 generation: 75% plant with purple
asked by qwerty 
math
the triangular sail on a sailboat has a base of 4 feet and height of 6 feet. aubrey will paint the sail using a special white paint. a can of this paint covers 10 square feet. how many cans of white paint will she need
asked by Anonymous 
Biology
A bone thickens by A. Activity of osteocytes in the medullary cavity B. increased secretion of calcium salts by osteoclasts C. Adding blood vessels and nerves D. None of the above
asked by Anonymous 
Calculus
Assume the dimensions of a rectangle are continuously changing in a way so that the area, A, of the rectangle remains constant. If the base of the rectangle is increasing at a rate of 3 inches per second, at what rate is the height of the rectangle
asked by Marto 
uhar
two blocks a and b are connected by a cord passes over a frictionless pulley. the mass of a is 1.2 kg and the magnitude of acceleration is 3.6
asked by ali 
mathematics
The circle x22x+y24y4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)(x8;y6) of
asked by Jossie 
urgent urgent algebra / precalculas
lcohol and Driving The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk R of having an accident while driving a car can be modeled by the equation R = e kx where x is the percent of concentration of alcohol
asked by zachary 
math
If I plant a 7 foot tall tree. The height (h) of the tree, in feet, after n years is given by the equation h + 4n + 7. In how many years will the height be 39 feet?
asked by Sean 
mathematics
The circle x22x+y24y4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)(x8;y6) of
asked by Jossie 
urgent urgent algebra / precalculas
Alcohol and Driving The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk R of having an accident while driving a car can be modeled by the equation R = e kx where x is the percent of concentration of
asked by zachary 
PHYSICS
Determining how the charges distribute on the surface of a conductor is, in general, a very difficult problem. We know that if we charge a conductor the charges go to the surface and redistribute so that the electric field in the conductor vanishes. One of
asked by Anonymous 
AlgebraB2
Thanks everybody, I got a solution for figuring out the answer (which is 36) to my first question. But I still need help with the other ones below. Any help would be appreciated: 2. What are the solutions of the equation x2 + 4x = 96? (1 point) 2, –48
asked by Jennifer W. 
physics
Object I is a solid cylinder with diameter d has resistance R. What would be resistance of another object made of the same material and with the same mass as Object I but has the cross section shown below (it is a hollow cylinder with outer diameter 2d and
asked by k 
Statistics
Scores on a visual perception test are normally distributed with a mean of 2020 and a standard deviation of 250. a)If one subject is randomly selected and tested, find the probability of a score greater than 1800 b)if 50 subjects are randomly selected and
asked by Sunshine 
Reading
which of the following statements is false? 1.investors often make the mistake of putting all of their"eggs in one basket" 2.Diversificat on in an investment portfolio is one way to lessen the rick factor 3.younger investors tend to invest a large
asked by J.J 
mathematics
evaluate each of the following...sin 75cos 105sin 15+cos 15
asked by Jossie 
algebra URGENT HELP
cohol and Driving The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk R of having an accident while driving a car can be modeled by the equation R = e kx where x is the percent of concentration of alcohol
asked by zachary 
math, HELP ME PLEASE!!
T determine what people like to do in their leisure time, the customers os a music store are surveyed. Of these, 85% said that they like to listen to music, so the store manager concludes that most people like to listen to music during their leisure time.
asked by syram 
statistics
The standard score for hours spent online at home for minnesotan was 3.00 approximately how many hours do minnsotan adults spend online at home? Show your work and round all cuclulation to the tenth
asked by wally 
mathematics
The circle x22x+y24y4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)(x8;y6) of
asked by Jossie 
Physics
An electron with a velocity of v = (3 x + 4 y + 2 z) × 106m/s enters a region where there is both a magnetic field and an electric field. The magnetic field is B = (1 x  2 y + 4 z)T. If the electron experiences no force as it moves, calculate the
asked by Lindsey 
GEOMETRY
A right triangle has perimeter equal to 198 and area equal to 1386. What is the length of the hypotenuse?
asked by Anonymous 
Quantum Physics
In this problem, we will carry out some steps of the quantum factoring algorithm for N = 15 (a) What is the period k of the periodic superposition set up by the quantum factoring algorithm if it chooses x = 2 ? (b) Assume that we found this k using period
asked by Gyanno 
statistics
Your program has an RDT&Efunded project scheduled to start in July 2005 which is expected to take 12 months to complete. The project is expected to cost a total of $12 million (thenyear dollars), with cost expected to be incurred at a rate of $1 million
asked by CHUCK 
Physical Science
How is friction involved in sledding and skiing?
asked by Anonymous 
Physics
An electron is shot into a uniform magnetic field B = (.5 x + .8 y)T with an initial velocity of v = (4 x + 3 y) × 106m/s. What is the force on the electron?
asked by Lindsey 
marine
on perfectly smooth and frictionless hockey field at 20n , how slowly a puck be driven to perform an inertial circle of diameter equal to the field width 26m
asked by Ahmed 
Physics
A charged particle is moving downward with an initial speed of 5 × 106m/s when it encounters a uniform magnetic field that points east to west. (a) If the initial force on the particle is to the north, is the particle positive or negative? (b) If B = .25
asked by Lindsey 
Algebra
solve for x: square root 2x+3 = square root 6x  1. A.) 1 B.) 2 C.) 3 D.) square root 6 I don't know how to do these so will you please show your work. Thsnk You.
asked by Jack 
MATH
if three fourths of the 2000 raffle tickets were sold, how many were NOT SOLD
asked by Anonymous 
Algebra
Which graph matches the function: y= square root 2x + 6 How would this look on a graph? Thank You.
asked by Jack 
CHEMISTRY
Suppose a 24.7 mL sample of helium gas at 25.°C and 1.14 atm is heated to 50°C and compressed to a volume of 14.8 mL. What will be the pressure of the sample? My teacher got 2.06 atm. pls explain to me how he got this. THANK YOU
asked by Lance Pls explain to me this Problem 
Chemistry
I am working a question...... I am not sure how to go about solving this or working it out. The class is online. Can some explain how to go about doing this. Thank you greatly :) How much heat does your body lose when 2.60g of sweat evaporates from your
asked by STAT 
statistics
Scores on a visual perception test are normally distributed with a mean of 2020 and a standard deviation of 250. a)If one subject is randomly selected and tested, find the probability of a score greater than 1800 b)if 50 subjects are randomly selected and
asked by Sunshine 
algebra
x348x128=0 x312x+16=(x2)2(x+4) Is this correct answer? Thanks for your help.
asked by Anonymous 
maths
Prove : (a^2+b^2+c^2+d^2)(1/a^2+1/b^2+1/c^2+1/d^2)greater equal to 16
asked by black_widow 
algebra
To determine what people like to do in their leisure time, the customers of a music store are surveyed. Of these, 85% said that they like to listen to music, so the store manager concludes that most people like to listen to music in their leisure time.
asked by syram 
Chemistry
What is PAV glue?
asked by Anonymous 
Math, Algebra
Circle O has a circumference of 220 meters. What is the approximate area of circle O? Show your work.
asked by syram 
Physical Science (Ms. Sue)
Why does some friction occur with seemingly smooth surfaces?
asked by Anonymous 
math
joe draws a line segment 2 1/4 inches long. then he makes the line segment 1 1/2 inches longer. how long is the line segment now?
asked by jose 
Algebra I?
((x3)/(x+1)) > 5 I get x <  2 everytime I solve it, but apparently this is wrong. Can you please show me the steps? :/
asked by Mary 
Chemistry
How many moles of NaCl are in 2.00mL of 1.00M NaCl?
asked by Alice 
Math
The students in Mrs. Lees class recorded the temperature at noon every day for a ten day period.The temperatures were 63,64,66,72,76,76,77,82,83,91.What is the range of the temperatures on the 5 coolest days A.7 B.9 C.13 D.20 C
asked by Jerald 
geometry
Cone a is 9 inches tall and has a diameter of 8 inches. Cone b has a diameter of 12 inches. What height does cone b need to be in order to hold the same volume as cone A
asked by sabrina l. thomas 916 gphs lol bk 
Lang.Arts
The story is "The Fire Pond" 3. How does the setting of the story change as the story develops? A.It starts as a source of conflict but is accepted in the end. B.It starts as important to the characters but is not in the end. C.It starts empty but becomes
asked by cassie 
History emergency
Why is mount Vernon famous?
asked by Anonymous 
Math 112
A class of 23 students was using square tiles to build rectangular shapes. Each student has more than one tile and each has a different number of tiles. Each student was able to build only one rectangular shape. All tiles had to be used to build the
asked by ENIS 
math
An equilateral triangle has a perimeter of 15x +18. What is the length of each side of the triangle?
asked by Anonymous 
accouting
 Hanna Manufacturing – Due Hanna Manufacturing manufactures components for the farming industry and is considering replacing its existing equipment with new and more high technology machinery, despite the fact that its existing eq uipment is only a few
asked by awad 
meaning
Jacy taught dancing and demonstarted ballet postions. What does position refer to in that sentence? A] dances for ballet B] the space occupied by something C] particular stances in ballet I think it's D?
asked by Celest 
Algebra
What does / Equal in a formula? Such as 2A/3 =8+4A
asked by Nate 
calculus
A moving dot P departs from O at an initial speed of 6 m/s in the east direction and accelerates at 2 m/s^2 in the east direction. 2 seconds after P's departure, dot Q departs from O to chase down P at a constant speed of k m/s in the east direction. What
asked by rohit 
Math,6th grade
Jane biked 34 mi in 2 h. At this rate, how far could she bike in 5 h?
asked by Essence 
Chemistry
How many grams of bromine are required to react completely with 3704 grams aluminum chloride?
asked by Alejandra 
GEOMETRY
Let P=(p1,p2,…,p7) be a permutation of the integers 1,2,…7. For how many permutations P are all seven sums S1=p1,S2=p1+p2,…,S7=p1+p2+⋯+p7 not multiples of 3?
asked by Anonymous 
Art
These are the important characteristics of jazz. improvisation, color, and red notes syncopation, shapes, and blue notes syncopation, color, and red notes improvisation, syncopation, and blue notes
asked by Andy Estep 
Physics
If a proton is moving in a magnetic field with a speed of 4 × 106m/s and is executing uniform circular motion with a radius of 10 cm, what is the magnetic field?
asked by Lindsey 
Physics
A halfatwood machine is constructed, as shown in the drawing below. The table is NOT frictionless, M1 is 50 grams, and M2 is 30 grams. Mass M2 descends 32 cm in 18 seconds. Find the tension in the wire.
asked by Dee 
Statistics
A random sample of 60 riders waited in line a mean time of 42 minutes with standard deviation 12 minutes. Find a 90% confidence interval for the populationmean waiting time in line
asked by Lost37 
Genetics
Mendel also studied pod color, which could be green or yellow, as well as seed shape, which could be round or wrinkled. Consider the following cross: P generation: Yellow pods with round seeds=____ Green pods with wrinkled seeds=____ F1 generation 100%
asked by qwerty 
Genetics
Consider the following cross involving the genes for pod color and seed shape: P generation: Green pods with round seeds= ____ Yellow pods with wrinkled seeds=____ F1 generation: 1/4 green pods with round seeds= ____ 1/4 grens pods with wrinkled seeds=____
asked by qwerty 
English
Can someone check if this question is grammatically correct? Thank you very much in advance. What do you use the Internet for? What are the main advantages and disadvantages of using it? What are the most addictive things on the Internet? What are the
asked by John 
Physics
An electron with a velocity of v = (3 x + 4 y + 2 z) × 106m/s enters a region where there is both a magnetic field and an electric field. The magnetic field is B = (1 x  2 y + 4 z)T. If the electron experiences no force as it moves, calculate the
asked by Lindsey 
Math
find a third degree polynomial function with real coefficients 2+i and 4 zeros
asked by Anonymous 
Algebra
How do you get the answer. If the width of the rectangle is 2 inches and the perimeter is 38 inches. I need to know the sum
asked by Anonymous 
Finance
The current market price of the company’s share is $5; its next expected dividend is $0.20 and its expected growth rate is 10%. Flotation cost is 20% of the market price of the share. 3. What is the weighted average cost of capital
asked by Eudora 
Geometry
ABCD is a rectangle with B(4,2) andD (10, 6). find the coordinates of A. Please help and tell me how you got it so I can understand
asked by Mariel 
English
1. When looking at the pros and cons of a problem, you are in the process of: A. gathering information. B. implementing a plan of action. C. interpreting information. D. defining a problem. is it A 2. diagram showing the relationships among concepts and
asked by Amy 
math, HELP ME PLEASE!!!
Circle O has a circumference of 220 meters. What is the approximate area of circle O? Show your work.
asked by syram 
MATH 8 HELP!!!
NYS 8th grade math curriculum 2013???? This year we have a BRAND NEW curriculum. I just want a list of units and topics in each unit because I want to know what I'm learning and what will I learn next (long story....) please help!!!!
asked by LARUEN 
Earth Science
If a sample contains 70g of Carbon 14 and 70g of Nitrogen 14, how many half lives has it undergone? (show all of your work)
asked by Andy 
statistics
the weights of shells follow a normal distribution. a random sample of 12 hybrid shells a a mean weight of 1.7 pounds with standard deviation 0.24 pounds. Find a 95 % confidence interval level for the mean weight if the fall catch is within 0.1 pounds of
asked by Lost37 
Physical sciences
What is the universal law?
asked by Miranda 
Physics
A series RCL circuit has a resonant frequency of 1530 Hz. When operating at a frequency other than 1530 Hz, the circuit has a capacitive reactance of 5.0 Ω and an inductive reactance of 33.0 Ω. What is the value of L? (Answer in H) What it the value of
asked by Elizabeth 
physics
If a student took a running start before starting to travel up stairs, the power calculated will be incorrect. Why must the student have an initial velocity of zero when the watch is started?
asked by Justice 
management
Manager joe presents problems to his work group and gets suggestions before making a decision . Joe's management style is
asked by ? 
Math
Find the sample space. a Bag contains 4 marbles: one each of red, blue, green and violet. Two marbles are drawn from the bag. assume that the first marble is not put in the bag before drawing the second marblle
asked by Nangoyi 
calculus
What is the slope of the line tangent to the quadratic f(x)=4x^2−3x+6 at x=7?
asked by rohit 
Science
Name 3 ways screws are used?
asked by D 
math
1) in a random survey of students, 152 students could swim and 48 could not. what is the probability that a student can swim? 2) suppose you spin two spinners, one marked 1 through 4 and the other marked A through E. how many possible outcomes are there?
asked by Anonymous 
chemistry
Copper container can be used to store (A) Al2(SO4)3 solution (B) ZnSO4 solution (C) FeSO4 solution (D) All of these
asked by PARUSH 
Algebra
Area of rectangle is 40m squared it has a length that is 2m less than 3 times its width what are the dimensions of retangle
asked by Steph 
life oriatation
3 environmental health hazard that cause ill health,crises or disaster within south africa and globally including evidence,graphs,statistics,pictures
asked by sisamnkele 
algebra
k is uniformly chosen from the interval (5,5) . Let p be the probability that the quartic f(x)=kx^4+(k^2+1)x^2+k has 4 distinct real roots such that one of the roots is less than 4 and the other three are greater than 1. Find the value of 1000p.
asked by Anonymous 
urgent urgent algebra
rewrite each in exponential expression as a logarithmic expression a)log,x=4 b)log 5=2 c)log ,8=x
asked by zachary 
math, HELP ME PLEASE!!!
Circle O has a circumference of 220 meters. What is the approximate area of circle O? Show your work.
asked by syram 
Math
How many frequent flyer point Indira earn if she traveled from new York city to Berlin ,Germany at a distance of 3,965
asked by Zack 
math
A tree 15 m tall casts a show of 10m. A nearby building is 30 m tall. What is the length of its shadow?
asked by t 
Math
A group of 378 people are standing in line to ride a roller coaster.If the roller coaster seats 16 people at one time,what is the least number of times the roller coaster will have to operate in order to give every person a ride?
asked by Olyvia 
Chemistry
Can PbCO3 + AgNO3 yield any product? Or do these two not react? If they don't react, can you please explain why? If they do, what is/are the product(s) and the balanced equation?
asked by Clio 
math
What is the imaginary part of −169−−−−√?
asked by ayan 
algebra
What does the MAD tell me about the data if the MAD is 5.6? HINT: MAD is the mean.
asked by syram 
English
1. I use the computer to make files with Power point. 2. I use the computer to do paper work with the word processor programs such as Hangeul, Power point and Excel. 3. I use the computer to buy things at Auction, an online shop. 4. I use the computer to
asked by rfvv 
math
x is a positive number such that x2+9x−22=0. What is the sum of all possible values of y which satisfy the equation x=y2−13y+24?
asked by ayan 
physics
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2?
asked by rohit 
college algebra
x^3+4x^22x3 ; x+1 factor theorum to decide whether or not second polynomial is a factor of the first.
asked by Anonymous 
kernersville
A horse a dog a chicken anved a duck lived on a farm.How many legs were on the farm.
asked by diana 
Finance
Walmart wishes to determine the rate of return of an investment made four years ago for $25 000 and currently has a market value of $31 500. During the current year the investment generated cash flows of $1000. Required: What is the rate of return on the
asked by Anonymous 
Math
Annie's math test scores are 68 82 82 88 92 98 Her median test score is.. A.30 B.82 C.85 D.88 C? The high temperature for the last 5 days were 28,28,32,55,77 What is the range? A.28 B.32 C.44 D.49 D? The high temperature for six days in August were
asked by Jerald 
algebra and geometry
1) in a random survey of students, 152 students could swim and 48 could not. what is the probability that a student can swim? 2) suppose you spin two spinners, one marked 1 through 4 and the other marked A through E. how many possible outcomes are there?
asked by Anonymous 
writing
NEED HELP WITH ANALOGIES PLEASEEEEEE DESCENDANT:ANCESTORS
asked by Brandon 
math
4  x 3=5 5 solve the equation
asked by marie 
physics
a40w motor conectedto a 9v battery can lift an object 40m in 10s
asked by jorge 
math
AB = AC Angle w is 80 degrees more than angle z. find angle x
asked by bhugeloo 
physics
a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up.
asked by lily 
English
1. When I was young, I was not able to ski. After I took ski/skiing lessons for three months, I became a good skier. Now I am able to ski well. (Will you check this passage? Are the sentences grammatical? Do we have to use 'ski lessons' or 'skiing
asked by rfvv 
science
Who made the first light bulb?
asked by Andrea 
ela
"That suddenly above the bee is heard," Is this an example of sensory language? It pertains one of the 5 senses(hearing)so I'm assuming.
asked by carolyn 
physics
a picture frame 25 kg hung over a nail by a string attatched to two hookes in the upper bar . find tension using parallelogram law
asked by susan 
English
Hi! Director of Central London Hatcheries shows a group of young men around their facilities. Babies are grown in bottles (World State Society)Director shows the group the five castes: Alpha, Beta, Deltas, Gammes, Epilsons. The director shows how children
asked by english 
Math
Expand and simplify. 2(3+4y+7) I got 8y + 20 but I don't think this is the right answer.
asked by Cherie 
Geometry
ABCD is a rectangle with B(4,2) andD (10, 6). find the coordinates of A. Please help and tell me how you got it so I can understand
asked by Mariel 
science
whats a change of dna in an organism?
asked by aisleen 
Algebra
Solve for y: 5x+7y=23
asked by Anne's 
PHYSICS
A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum
asked by Anonymous 
Life orientation
Identify and describe environmental problems that cause ill health , accidents crises ans disasters in your community!
asked by marakes 
angle relationships
kim drew the trapezoid below.find the measure of
asked by jessie 
physics
A railroad car with a mass of 2000kg is rolling at a speed of 15m/s. What force would be required to stop the car in 10 seconds?
asked by Tcrowder 
MATH
HOW DO YOU FIND OUT THIS PROBLEM FRAN FOUND THE AREA OF A RECTANGLE BY MULTIPLYING 5 UNITS X 4 UNITS. DRAW FRAN RECTANGLE. LABEL THE SIDE LENGTHS.
asked by LATTANE 
SCIENCE
HOW CAN YOU USE 2 LAMP BATTRIES AND THREE SOCKETS TO MKE A LIGHT ENERGY BUT ALSO STATIC ELECTRICITY
asked by LATTANE 
math
simplify 57
asked by marie 
FRENCH
DO YOU PRONUNCE JE MEPLLE LATTANE LIKE WHEN I SOUND IT OUT IT SHOULD SOUND LIKE THIS ZHUH MEPLLE LATTANE WITH THE FRENCH ACENT AM I RIGHT
asked by LATTANE 
math
tan ( pi/4 + theda) when tan theda = 1/2
asked by cindi 
math
bedroom shaped like a right triangle with base 4.8 meters and height 5.2 meters. how much carpet will she need.
asked by Anonymous 
math
Sheila has a 12 gallon gas tank in her heavily packed van. On a recent trip she drove a total of 90 miles with the airconditioner on the entire way. The gas gauge read exactly 3/4 of a tank at the start of the trip, and exactly 1/4 of a tank at the end of
asked by Anonymous 
math
mr.vern lawn is triangle shaped with a base of 25 feet and a height of 10 feet what is the area of mr. vern lawn
asked by Anonymous 
physics
vector R= (t^39t^2 + 24t + 10)jhat
asked by alexander 
physics
a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up.
asked by lily 
Math
Y=x Y=1/2x Can someone help me explain how decreasing the coefficient of x affects the graph
asked by Carol 
Chemistry
How many moles of H20 are in 430g of H20?
asked by Jasmin 
math
Let 3a be the highest power of 3 that divides 1000!. What is a?
asked by ayan 
maths
How many integers appear in both of the following arithmetic progressions: A1:2,9,16,……,2+(1000−1)×7 A2:3,12,…,21,…,3+(1000−1)×9 Details and assumptions Since 2 appears in A1 but not in A2, it does not appear in both of the arithmetic
asked by rohit 
Grammar
"They have lived in what is now Ghana for many centuries," she went on. Does this sentence need quotations
asked by Dakota 
maths
ms.fuller has 22/3 pies left over from her party.write the number of pies left over as a fraction greater than 1
asked by shamim 
physics
Object I is a solid cylinder with diameter d has resistance R. What would be resistance of another object made of the same material and with the same mass as Object I but has the cross section shown below (it is a hollow cylinder with outer diameter 2d and
asked by k 
hurricanes
We only see hurricanes in the summer months because
asked by Anonymous 
MicroEconomics
Hello, I have a snapshot file of some questions on elasticity I would like to send. Is there an email address and what do you charge? Thank you
asked by Manuel 
12Chemistry
What types of problems do pharmacists encounter?
asked by Anonymous 
Algebra
Use the function rulef(x)=3x2 . Find the output f(1.5). A.2.5 B.–2.5 C.6.5 D.–6.5 This is not working out for me...can someone show me how to do this please...
asked by cassie 
math
5(x+7)8=??
asked by Anonymous 
math
simplify the expression 10k + (4m)8k+2m
asked by Anonymous 
math
write an expression for the sum of a number and 8, divided by 6
asked by A 
inequality why is this wrong?
(x3)/(x+1) > 5 i solved and got x < 2 but this is not right once you plug it in. please help.
asked by landry 
math
perform the following unit conversion 32 kg = lb
asked by Anonymous 
Art
The Barbizon painters were known for their urban, studio created nudes true or false The PreRaphaelites advocated an urban, Parisian sophistication in their art: true or false
asked by kristina 
Opinion (check)
Please check the if they are all opinions: Martin's neighbors accused the mother of eight of ordering phantom puppies to attack them and of walking in the rain without getting wet. One explanation for the girls' behavior was that they were simply bored
asked by Celest 
Ms. Sue
Can you check my answers on basic english makeup exam please
asked by Anonymous 
Physics
A series circuit contains only a resistor and an inductor. The voltage V of the generator is fixed. If R = 10 Ω and L = 4.2 mH, find the frequency at which the current is onehalf its value at zero frequency? Answer in Hz
asked by Elizabeth 
Math
Happy late pi day to you math lovers.
asked by Anonymous 
math
a smaller box has dimension that half the measurements of the orignal . find the ratio of the surface area of the orginal box to the surface area of the smaller box
asked by mystique 
Chemistry12
how does a pharmacist use chemical bonding?
asked by Anonymous 
Opinion
Please check if this is an opinion: He said he hopes to reschedule his trip for next year
asked by Celest 
physics
pv = constant to find the work done
asked by shashi ranjan 
math
factor 64t
asked by Anonymous 
maths
What is the smallest positive common difference of a 6term arithmetic progression consisting entirely of (positive) prime numbers?
asked by rohit 
algebra 2
what is the answer of 1(x6)(x+8)
asked by dre 
Art
The Barbizon painters were known for their urban, studio created nudes true or false The PreRaphaelites advocated an urban, Parisian sophistication in their art: true or false
asked by kristina 
Derivative
implicitly differentiate f(x) 2xy= y ^2 find second derivative with relevance to x and y. i get y''= xy'  y/ (yx)^2 this is wrong though. can someone please help me. thank you
asked by Mary 
Math
Use all 30 feet of fencing to find the best enclosure for your pet. Find area
asked by Yelena 
math
mulitply 7X(62)= ???
asked by Anonymous 
inequality/math
3x8>5
asked by marie 
science
Most nekton ____ the ocean? A.swim in B. drift at the surface of C. attach to the bottom of D. all of the above
asked by charloette 
algebra 1
which is an exponential equation y=x^2 y=5^x y=2x3 y=1/x
asked by Anonymous 
math
solve x(7=4
asked by marie 
science
what is the gravitational attraction between the sun and the other planets?
asked by Anonymous 
Chemistry
What is PVA glue?
asked by Anonymous 
mathematics
determine the general solution...2.sin(2x+30)=tan 135
asked by Jossie 
math
which fraction cannot be expressed as repeat decimal? a) 1/11 b)1/4 c 5/8 d 2/3
asked by d 
math
factor 64t
asked by Anonymous 
english
complete the sentence please! a kite___ tries to catch a falling kite before it lands.
asked by Sara 
algebra 1
which is an exponential equation y=x^2 y=5^x y=2x3 y=1/x
asked by Anonymous 
Applied Calculus
2^(3/4)*4^(3/2)
asked by Jacob 
math
x(7)=4
asked by marie 
math
solve the equation: 3x8=12
asked by d 
math
what is the graph of y=16t^2+8t+70
asked by beth