# Questions Asked onSeptember 29, 2012

84. ## chemistry

Ariel found the density of an unknown solid to be 24.3 g/cm3. Her teacher told her that something must have gone wrong with her measurements because her percent error was 30.0% too high. What was the actual or accepted density of her unknown solid?

85. ## college algebra

how do I solve this: (17x^3-5x^2+4x-3)-(5x^3-9x^2-8x+11) and putting the resulting polynomial in standard form?

86. ## algebra

in solving the equation (x +2)(x - 2) = 32 eric stated the solution to be x + 2 = 32 => x = 30 or x- 2 = 32 => x = 34. however at least one of these solutions fails to work when plugged back into the equation. why is that? please help eric to understand

87. ## science

What force is needed to move a 200.00 neuton chair 1.7 meter?

88. ## physiscs

A model rocket is launched straight upward with an initial speed of 53.0 m/s. It acceler- ates with a constant upward acceleration of 3.21 m/s2 until its engines stop at an altitude of 230 m. What is the maximum height reached by the rocket? The

89. ## Math riddles for 4th grade

divide me by 10 and 3 remians. a square number my first digit be. My second digit is the product of1 and 3. All together I am greater than 50.

90. ## physics

An F-14 jet fighter flies horizontally at 200m/s at an angle of 30 degrees above the horizon when it drops parcel from 2400m above the ground. a) How long does it take the parcel to hit the ground? b) How far does the parcel travel in the x-direction, from

91. ## Physics

an ambulance starts its motion from rest at a hospital and accelerates at a rate of 1.60 m/s^2 for 14.0 s. after that, it travels at constant speed for 70.0 s, and it the slows down at a rate of 3.5 m/s^2 until it stops (vf=o m/s) at the accident seen.

92. ## stor

Suppose that you flip a fair coin (P(H)=P(T)=1 2 ) three times and you record if it landed on heads, H, or tails, T. (a) What is the sample space of this experiment? What is the probability of each event? (b) [1 pt] Let X be the number of times that you

93. ## physics

The acceleration due to gravity near a planet's surface is known to be 3.20 . Part A If the escape speed from the planet is 9.54 , determine its radius. Part B Find the mass of the planet. Part C If a probe is launched from its surface with a speed twice

94. ## physics

At the Indianapolis 500 time trials, each car makes four consecutive laps, with its overall or average speed determining that car’s place on race day. Each lap covers 2.5 (exact). During a practice run, cautiously and gradually taking his car faster and

95. ## chemistry

A solution of ethanol (C2H50H) in water is prepared by dissolving 76.9ml of ethanol (density0.79g/cm3) in enough water to make 0.25L of solution. What is the molarity of ethanol in this solution Who helps me

96. ## physics

Calculate the power required of a 1190 kg car as it climbs a 11° hill at a steady 103 km h-1. The total friction and air resistance is 700 N. Answer in kW, to the nearest whole number.

97. ## Chemistry

This is a question I am presently doing right now which I found in my homework. I am quite sure that in (a) I have to use the Hasselbach equation though I am not sure how to work it out. If anyone knows any of the answers, and how you got to them, please

98. ## Math

Divide 64 bundles of newspapers into two groups so the ratio is 3 to 5.

99. ## statistics

. In terms of the mean and standard deviation: - What does it mean to say that a particular value of x has a standard score of +1.5? - What does it mean to say that a particular value of x has a z-score of -2.6?

100. ## physics

If the coefficient of friction between the tires of a car and the road is 0.101, what is the minimum stopping distance of a car traveling at 78.4 km/hr?

x^3-27

102. ## Math

For the given cost function 16 sqrt x+x^2/3375 The marginal cost at the production level 1700 The minimal average cost

103. ## social studies

Ashley is very bold, outgoing, sociable, agreeable, and open to trying new things. Her sunny personality can probably be attributed: A. more to environment than heredity. B. more to intelligence than to any other factor. C. more to heredity than

104. ## Physics

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.50m/s. During the second part, she rides for 36 minutes at an

145. ## childcare

Discuss the responsibilities that a teacher has to volunteer parents when these parents are invited to particpate in learning activities. Include five responsibilties and an examplae of each

146. ## Math

If the limit as x approaches 1 for (f(x) - 7)/(x-1)=8, evaluate the limit as x approaches 1 for f(x)

147. ## math

on her first two math tests, Gracie has an average score of 86. If she got a score of 92 on the first test, what is her score on the second test?

148. ## Chemistry

A block of metal has a width of 3.2 cm , a length of 17.1cm , and height of 5.8cm . Its mass is 1.5kg . Calculate the density of the metal.

149. ## physics

A ball is thrown straight upwards at a speed of 32.3 m/s and from a height of 1.5 m above the ground. How fast is it traveling when it hits the ground? (m/s)

150. ## physics

A regional airline flight consists of two legs with an intermediate stop. The airplane flies 380 due north from airport A to airport B. From there, it flies 260 due east to its final destination at airport C. Part A What is the magnitude of the plane’s

151. ## math

How to find the value of y in a fraction

152. ## physics

Total mechanical energy of a flying rubber ball is 2000 J. It has a velocity of 151 ms-1 and is 3.1 m above the ground. Find the mass of the ball. (2dp)

153. ## English

Limburg cheese smells very (bad, badly). Is the correct answer bad because it modifies cheese? "The leading lady in the play," she said, "is feelin (sick, sickly)." Is the correct anwer sickly because it modifies is feeling?

what are the other terms in discount series

155. ## Physics

A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. (a) How high above Earth's surface is the satellite? [Answer in Km] (b) What is the satellite's acceleration? [Answer in m/s^2] I see this posted over and over again

156. ## HIstory

"reported to the king on colonial activities and ensured harmony among his parishes". is actually suppossed to be François de Laval

asked by I Gave Wrong Info Ms.Sue
157. ## chemistry

Identify a haloalkane and describe the manner in which it functions as an anesthetic.

158. ## physics

A Superball is dropped from a height of 2.4 and rebounds off the floor to a height of 1.9 . Part A If the ball is in contact with the floor for 0.70 , determine the direction of the ball’s average acceleration due to the floor. If the ball is in contact

159. ## English

Thank You, Ms. Sue I understand it better now

160. ## Managerial Economics

8. Calculate the price elasticity demand, given Q1=500 , Q2=1000 , P1=55,P2=50

161. ## statistics

. In terms of the mean and standard deviation: - What does it mean to say that a particular value of x has a standard score of +1.5? - What does it mean to say that a particular value of x has a z-score of -2.6? Please show all work.

162. ## math

you are taking a 10 question essay test. How many ways can you answer the test?

163. ## college algebra

(x+5y)(7x+3y)How do I solve this. I know I have to somehow combine the x and y but can't remember.

164. ## College algebra

How do I solve this?(7x+5y)^2

165. ## Mythology

I wonder if this is a good example of magical realism for my own etiological myth: Theodoreus carries a big sack, then opens it in front of Cyclopes after he says, "What are you going to do with that big sack?" This idea may need to expand.

167. ## College algebra

(2x-3)(x^2-3x+5)

168. ## statistics

A student scored 30 percent on a test, and was in the 24th percentile. Explain these two numbers! Please show work!

169. ## Ethics

Is there a difference between decisions based on law versus decisions based on ethics?

170. ## colLege math

(2x-1)(x^2-4x+3)