Answer:
Step-by-step explanation:
The given equation is ![\sqrt[3]{x+8}=-4](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7Bx%2B8%7D%3D-4)
.
We cube both sides of this equation to obtain;
![(\sqrt[3]{x+8})^3=(-4)^3](https://tex.z-dn.net/?f=%28%5Csqrt%5B3%5D%7Bx%2B8%7D%29%5E3%3D%28-4%29%5E3)
.
This implies that;
We group similar terms to obtain;
We simplify the right hand side of the equation to obtain;
Therefore x=-72 is the solution of the given equation.
Answer: See explanation
Step-by-step explanation:
Le the number be x and x+2
The information given can be formed into and equation as:
(x + 2)² = x² + 120
(x + 2)(x + 2) = x² + 120
x² + 2x + 2x + 4 = x² + 120
Collect like terms
x² - x² + 2x + 2x = 120 - 4
4x = 116
x = 116/4
x = 29
The smallest number is 29
The larger number is x + 2 = 29 + 2 = 31
Answer:
Step-by-step explanation:
breaststroke=50
backstroke=60
ratio=breaststroke:backstroke
=50:60=5:6
The additive and subtractive method are opposites of each other, so it is important to know how to do each of them so that you could reverse them if you wanted to.
