a person can see 72 mi to the horizon from an airplane window. How high is the airplane? Use the formula D=1.2√h, where D is in miles and h is in feet.
a person can see 72 mi to the horizon from an airplane window. How high is the airplane? Use the formula D=1.2√h, where D is in miles and h is in feet.
r=2√5L Can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in feet. Use this formula to solve the following. How far will a car...
How far can you see to the horizon from a given height? the function D=1.2√h can be used to approximate the distance d, in miles, that a person can see to the horizon from a height h, in feet...
Rationalize the denominator. Assume that no radicands were formed by rasing negative numbers to even powers. 7√2 + 4√3 4√3 - 3√2
Divide and simplify. Assume that all expressions under radicals represent positive numbers. ^5√32b^10 243a^20
Multiply and simplify. Assume that no radicands were formed by raising negative numbers to even powers. ^4√9ab^3 X √3a^4b
Use rational exponents to write a single radical expression. x^8/15 X y^1/7 x^1/3 X y^-1/5
Use rational exponents to simplify. Write the answer in radical notation if appropriate ^3√8y^6
A Boeing 747 flies 2420 mi with the wind. In the same amount of time, it can fly 2140 mi against the wind. The cruising speed (in still air) is 570 mph. Find the speed of the wind
Tom can cut and split a cord of firewood in 6 fewer hours than Henry can. When they work together, it takes them 4 hours. How long would it take each of them to do the job alone?
The speed of the current in the Wabash River is 3 mph. Brooke's kayak can travel 4 mi up stream tn the same time that it takes to travel 10 mi downstream. What is the speed of Brooke's kayak in still...
Simplify 1/b^2-1/c^2 1/b^3-1/c^3
Perform the indicated operations and simplify 1 + 1 - 2b b-a a-b a^2-b^2
Perform the indicated operations and simplify d^2-d × d-2 ÷ 5d d^2-6d+8 d^2+5d ...
Find the domain. Write set builder notation and interval notation for the answer. f(x)= x^2-3x-4 ...
Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form. 3y+2/y^2+5y-24 + 7/y^2+4y-32
Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form. y/y^2-y-20 + 2/y+4
Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form. x-1/3x+15 - x+3/5x+25
Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form. 9x+2/3x-2x-8 + 7/3x^2+x-4
Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form. 4xy/x^2-Y^2 - x-y/x+y