Answer:
Step-by-step explanation:
Multiply the equations together
(5x+4)(5x^2-7x-2)
25x^3-35x^2-10x+20x^2-28x-8
Add like terms
25x^3-15x^2-38x-8
Answer:
33
Step-by-step explanation:
1254 divided by 38 is 33
9^3 is 729 so x^3 = 512 and you find it to be 8
Steps:
57.68÷8
=7.21minutes per hour
(p.s. make sure they don't want you to round!)
The window is 54.12 in tall.
Step-by-step explanation:
- Step 1: The window can be imagined as 2 right triangles. The diagonal represents the hypotenuse of the right triangle = 65 in and base = 36 in. Find the other side, which will give the height of the window.
Using Pythagoras Theorem, Hypotenuse² = Base² + Height²
Height² = 65² - 36² = 4225 - 1296 = 2929
⇒ Height of the window = √2929 = 54.12 in
