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Question 873018: Can anyone help me?
An experimental rocket is launched into the air from ground level with the Earth with an initial velocity of 192 feet per second. Its height s in feet is given by the formula
s=-16t^2+ 192t
After how many seconds will the rocket reach a height of 576 feet?
Click here to see answer by ewatrrr(24785)  |
Question 873125: Having issues with this.
Complete the following:
(a) Determine the number of the real solutions of -x^2-4x+1=0
(b) Use the quadratic formula to find the exact values of the real solutions, if they exist. Give the solution set.
© Use a calculator to find approximations for the answers. Round your answers to the nearest thousandth.
Click here to see answer by reviewermath(1029)  |
Question 873126: The perimeter of a football field is 340 yards. The length of the field is 20 years more than twice the width. What are the dimensions of the field?
A. 100x70 yards
B. 120x50 yards
C. 200x140 yards
D. 240 x 100 yards
Click here to see answer by indra89811(24)  |
Question 873271: Anyone able to help please?
Two cars leave a gas station at the same time. One travels due south at 32 miles per hour, and the other travels due west at 46 miles per hour. How far apart are they after 1 1/2 hours? Round your answer to the nearest thousandth, if necessary.
A. 84.054 miles
B. 56.036 miles
C. 78 miles
D. 117 miles
Click here to see answer by Seutip(231)  |
Question 873278: I need some help.
If a homemade rocket is propelled upward from ground level with an initial velocity of 112 feet per second, after t seconds, its height h in feet is given by the formula h=-16t^2+112t. After how many seconds will its height be 160 feet?
Click here to see answer by ewatrrr(24785)  |
Question 873280: The price for adult admission to Walt Disney World can be approximated by the equation y=0.03x^2+0.48x+9.1, where y represents the price per adult and x represents the number of years after 1971. What was the adult admission price in 2006? (Round your answer to the nearest cent)
Click here to see answer by ewatrrr(24785)  |
Question 873670: I need help with two problems.
Write answers with positive exponents.
(7/y^-4)^-3
I am getting 1/343y^12 but I don't think thats in positive exponents.
Same with this problem.
(4^-2xy^2)^-3
I am getting 1/4^2xy
Click here to see answer by LinnW(1048)  |
Question 873674: Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles. Suppose a star is 14.4 light-years from Earth. In scientific notation, how many miles away is it?
Simplify the expression. Write the answer using scientific notation.
Click here to see answer by ewatrrr(24785)  |
Question 873673: Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles. Suppose a star is 13.6 light-years from Earth. In scientific notation, how many miles away is it?
Simplify the expression. Write the answer using scientific notation.
Click here to see answer by ewatrrr(24785)  |
Question 873649: I need some assistance please.
Two cities are 1000 miles apart. On the first flight a plane flew into a 50 mph headwind. On the return flight the plane had 50 mph tailwind. The round trip flight was 4.5 hours. What is the average speed of the plane without the wind?
A. 480 mph
B. 450 mph
C. 375 mph
D. 325 mph
Click here to see answer by ewatrrr(24785)  |
Question 873668: This is a question on a practice test that I don't know how to solve or get the answer too. Can you please help me? Your time and effort is greatly appreciated!
Where are the asymptotes of f(x) = tan(4x − π) from x = pi/4 to x = 5 pi/4?
a) x= pi/4, x=3pi/4
b) x= 0, x= pi/4
c) x= pi/2, x= 3pi/2
d) x= 3pi/8, x= 5pi/8
Click here to see answer by htmentor(1343)  |
Question 874045: Having issues with this problem.
Movie Star Theatre charges $6.00 for a box of popcorn and $3.50 for large drink. After filling 32 popcorn and large drink orders the theatre had collected $149.50. How many large drinks and boxes of popcorn did they sell?
A. 17 orders of popcorn and 15 large drinks
B. 15 orders of popcorn and 17 large drinks
C. 14 orders of popcorn and 18 large drinks
D. 18 orders of popcorn and 14 large drinks
Click here to see answer by ewatrrr(24785)  |
Question 874240: How do I solve?
A boat can go 20 miles against the wind in the same time that it can go 60 miles with the wind. The wind is blowing at 4 mph. Find the speed of the boat with no wind.
A. 4mph
B. 8 mph
C. 40 mph
D. 80 mph
Click here to see answer by mananth(16946)  |
Question 874044: I need help please.
A foot tall tree casts a shadow that is one foot shorter than the distance from the tip of the shadow to the top of the tree. Find the length of shadow.
(a) Let x represent the length of the shadow. Write an expression for the diagonal distance from the tip of the shadow to the top of the tree.
(B) What is the length of the shadow? (Hint use the pythagorean formula)
Click here to see answer by KMST(5328)  |
Question 874306: How do I figure this problem out?
The hot water faucet can fill the pool in 30mins and the cold water faucet can fill the pool in 20mins. How long would not take to fill the pool with both the hot and cold water faucets on?
A. 11 1/5 min
B. 15 4/5 mins
C. 14mins
D. 12 mins
Click here to see answer by josgarithmetic(39617) |
Question 874306: How do I figure this problem out?
The hot water faucet can fill the pool in 30mins and the cold water faucet can fill the pool in 20mins. How long would not take to fill the pool with both the hot and cold water faucets on?
A. 11 1/5 min
B. 15 4/5 mins
C. 14mins
D. 12 mins
Click here to see answer by richwmiller(17219)  |
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