05/04/16

Question in details
The weight w of an object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 mi from the center of the earth), an astronaut weighs 123 pounds. Find... more
Follows • 1
Expert Answers •1

05/04/16

sequencing
jason runs 1 mile, the he runs 1/2 mile more, then he runs 1/4 mile more, and so on. If he continues this process indefinitely, how far will he run? Will he ever pass the tree that is 3 miles down... more
Follows • 1
Expert Answers •1

05/04/16

Possible Roots?
P(x) = -5x4 + x3 + 2x2 – 1   Use Descartes' Rule of Signs to analyze the zeros of the following. List all possibilities.   Please explain
Follows • 2
Expert Answers •2

05/04/16

A certain population is known to have a normal distribution with a mean of 24.2 and a standard deviation of 8.8. Find the probability that the mean of a random
A certain population is known to have a normal distribution with a mean of 24.2 and a standard deviation of 8.8. Find the probability that the mean of a random sample of 16 values taken from this... more
Follows • 1
Expert Answers •1

05/03/16

tatio question
the record for the Boston Marathon wheelchair division is 1 hour 18 minutes, and 27 seconds   A, The Boston Marathon is 26.2 miles long. What was the average speed of the record  winner of the... more
Follows • 1
Expert Answers •1

05/03/16

Jayce dove off a platform 8 meters above the surface of the water into a pool. After he entered the water, he reached 3 meters below the water’s surface.
Its a problem that comes from number systems in 7th grade
Follows • 1
Expert Answers •1

05/03/16

Given triangle ABC ~ triangle GHI and triangle DEF ~ triangle GHI prove triangle ABC ~ triangle DEF
Given triangle ABC ~ triangle GHI and triangle DEF ~ triangle GHIprove triangle ABC ~ triangle DEF
Follows • 1
Expert Answers •1

05/03/16

The perimeter of triangle ABC = 15 The perimeter of triangle DEF = 20 If side AB = 5, and the two triangles are similar, what does the corresponding side DE equ
The perimeter of triangle ABC = 15The perimeter of triangle DEF = 20If side AB = 5, and the two triangles are similar, what does the corresponding side DE equal?
Follows • 1
Expert Answers •1

05/03/16

Complete the second sentence in each pair so that it has the same meaning as the first one.
1a) I don’t know anyone who dances as well as Kelly.1b) Kelly is [x1] I know.2a) I am 20 and my brother is 35.2b) My brother is [x2] than I am.3a) The house in Worcester and the house in Reading... more
Follows • 1
Expert Answers •1

05/03/16

Slope-Intercept equation I need help with
Write the equation of the line that passes through each pair of points in slope-intercept form. (6,5), (-9,-20)
Follows • 1
Expert Answers •1

05/03/16

Math Word Problem Help - Please include steps.
The sum of the digits of a three-digit number is 10. The units digit is 5. If the order of the number is reversed, the result of the number that is 297 is more than the original number. What is the... more
Follows • 1
Expert Answers •1

05/03/16

Solve by substitution
Solve by Substitution   1)   14x-2y=46        -7x+y=-23   2) 5x+ y =8     -3x +2y = -10     Solve by elimination   3) -15x + 9y=27      -5x - y = 17   4) -7x-8y =-23      4x + 4y... more
Follows • 1
Expert Answers •1

04/28/16

Airplane speed and wind speed
An airplane travels 5013 km against the wind in 9 hours and 5913 km with the wind in the same amount of time. What is the rate of the plane in still air and what is the rate of the wind?
Follows • 2
Expert Answers •2

04/26/16

the sum of two numbers is 38. The smaller number is 6 more than one-third of the larger number. What are the two numbers?
the sum of two numbers is 38. The smaller number is 6 more than one-third of the larger number. What are the two numbers?
Follows • 1
Expert Answers •1

04/21/16

the sum of -4 and the product of -3 and –2
the sum of -4 and the product of -3 and –2
Follows • 1
Expert Answers •1

04/21/16

(3,1) perpendicular to y=0
Y intercept form 
Follows • 1
Expert Answers •1

04/21/16

Lowest common multiple question
Find the positive integer n such that the least common multiple of n and n-30 is n+1320.
Follows • 1
Expert Answers •1

04/20/16

I need help with Stats
A personality scale has scores that are normally distributed with a mean of 150 and a standard deviation of 20. 1. What proportion of people score lower than a percentile rank=143 P(X<143)? 2.... more
Follows • 2
Expert Answers •2

04/20/16

help with a problem and is there any way to check my answer so i am not double guessing?
An elevator has a stated maximum capacity of 12 people or 2004 pounds. If 12 people have weights with a mean greater than (2004/12) = 167 pounds, the capacity will be exceeded. Assume that weights... more
Follows • 2
Expert Answers •2

04/20/16

Probability Question
The barton Company manufactures automobile charge indicator gauges. Under test conditions, these gauges are supposed to read 0 volts. However, some gauges read slightly more than 0 volts and some... more
Follows • 1
Expert Answers •1

03/28/16

inverse function
Find the inverse function of f(x) =        3                                                    ---------                                                        x − 1f −1(x) = _________   Use a... more
Follows • 1
Expert Answers •1

03/28/16

Distance math word problem
A boat goes 240 miles down stream in the same time it can go 160 miles upstream. The speed of the current is 5 miles per hour. What is the speed of the boat in still water?
Follows • 1
Expert Answers •1

03/27/16

How many solutions exist for the system below?
How many solutions exist for the system below? In two or more complete sentences, give the solution and explain how you solved the system?   y=-2x+3 y=-2(3^x) here is the... more
Follows • 2
Expert Answers •2

03/27/16

Algebra question. Read description for full question.
Andrew and Bill are driving golf carts on the same path in the same direction. Andrew's cart is travelling at 20 MPH and Bill's is travelling at 24 MPH. Andrew passes a lemonade stand at 6:34 A.M.... more
Follows • 1
Expert Answers •1

03/27/16

every two days, forty percent of a substance degrades. How many days will it take for 2800 gram sample to decay to below 100 (actively radioactive) grams?
I need help writing an equation for this 
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.