Tutors Answer Your Questions about expressions (FREE)
Question 1121127: simplify the following expression
(xy^-4/2x^2y^3)^2
Find X and Y intercepts of this equation. then graph the line
-3x+4y=8
evaluate the following expression: +5+2(3.4)
Jan has a piece of string. the string is 108 inches. he cut the string into
three diffrent pieces. one piece is two inches more than the shortest pieces, and the longest pieces is four inches longer than the shortest piece. What the length of the longest piece?
Click here to see answer by greenestamps(13203)  |
Question 1123093: A circle has an initial radius of 22 cm when all of a sudden the radius begins shrinking at a constant rate of 4 cm per second.
a. Write a formula that expresses the radius of the circle in cm, r, in terms of the number of seconds t since the circle started shrinking.
r=
b. Write a formula that expresses the area of the circle in cm2, A, in terms of the radius of the circle in cm, r.
A=
c. Write a formula that expresses the area of the circle in cm2, A, in terms of the number of seconds t since the circle started shrinking.
A=
d. Define a function f that determines the area of the circle in cm2 given the number of seconds t since the circle started shrinking.
f(t)=
e. Repeat part (c), but assume that the radius of the circle is shrinking at a constant rate of 8 cm per second.
f(t)
Click here to see answer by Boreal(15235)  |
Question 1123228: Write a formula that describes the function. A developer prices condominiums in Florida at $23,000 plus $45 per square foot of living area. Express the cost C as a function of the number of square feet of living area s.
Click here to see answer by Boreal(15235)  |
Question 1112043: A family has a rectangular backyard that measures 3x+5 by 2x-1. They are building a square patio with side lengths that measure x+3. Write an expression for the area of the gras that will be left in the backyard after the patio is built.
Click here to see answer by Rhodium(14)  |
Question 1123407: Travis wrote the following expression to show that his sister's age is 5 years less than twice his age. Explain what he did wrong. Give the correct expression.
Let a stand for my age.
My sister's age: a/2 -5
Click here to see answer by ikleyn(52832)  |
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