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04/29/20

Coal in West Virginia

Coal is carried from a mine in West Virginia to a power plant in New York in hopper cars on a long train. The automatic hopper car loader is set to put 65 tons of coal into each car. The actual... more

01/10/20

Gravel is being dumped from a conveyor belt at a rate of 10 cubic feet per minute.

Gravel is being dumped from a conveyor belt at a rate of 10 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal. How fast... more

11/19/19

find a formula for the general term of the sequence, starting with 𝑛=1

1/2, -1/4, 1/8, -1/16....I initially thought the answer was = 1/(-2)^n but that it incorrect.

07/11/19

What is the value of r if the permutation is 13Pr=156?

06/08/19

Independent Events and Probability Trees

There is a bag filled with 5 blue, 6 red and 2 green marbles. A marble is taken at random from the bag, the colour is noted and then it is replaced. Another marble is taken at random. What is the... more

05/22/19

f(x)=x^2+x-6/x-2 , what number does f(x) approach as x approaches 2?

f(x)=x^2+x-6/x-2 , what number does f(x) approach as x approaches 2?

05/20/19

Area and perimeter

The length of the pool is 5 times the width. If the are of the pool is 405 ft^2. What is its perimeter?L=5wA=LwP=2(l +w)

05/10/19

Write an equation of a circle with diameter stack A B

A (0, 2) and B (0, 10)

05/10/19

How do I evaluate Lim n→∞ (1+2+3+…+n^3) /n^4?

Need help solving this problem

A state’s population as a function of time t (in years) is given by P(t) = 34,178,000 + 78,000t and its health care costs are given by C(t) = 47,863,000 + 430,500t + 178t2 a. Create the function... more

04/25/19

IF -5x² + x = 0, what is x?

04/23/19

What is the derivative of f(x) =x^ {1/3}?

04/23/19

The change-of-base formula for changing log x into base e is log x=

The change-of-base formula for changing log x into base e is log x=Which answer would it be?A. log x/log 10B. ln x/ln 10C. log 10/log xD. log x/log eF. ln x/ln e

04/23/19

sue read three fifths of the book,what fraction will sue h

sue read three fifths of the book,what fraction will sue have left to read

04/23/19

I don't understand and my teacher won't explain!? (help me with probability please)

Allie has a bag containing 3 white pom-poms and some black pom-poms. She shares that the probability of picking two white pom-poms from the bag without replacement is 6/20. How many black pom-poms... more
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