Answer:
The correct answer is C.
Step-by-step explanation:
Answer:
Step-by-step explanation:
First let's find the value of x :
We khow that the area of this triangle is 400 and it is given by the product of the base and the height over 2
- the base is x
- the height is 2x
- Let A be the area : A= (2x*x)/2 =2x²/2 =x²
- so x²= 400 ⇒ x= 20≥ 0 because it's a distance
Let's find the hypotenuse :
The pythagorian theorem :
- h²= x²+(2x)²
- h²= x²+ 4x²
- h²= 5x²
- x=20⇒ h²= 5*(20)²
- h²= 2000
- h= 20
≥0 because it is a distance
Answer:
15
Step-by-step explanation:
16^2-1^2=15
A full strip and a half of staples = 1 strip + 0.5 strips = 1.5 strips
1.5 strips = 315 staples
Divide both sides of the equation by 1.5 to find out how many staples are in one strip:
1.5 strips ÷ 1.5 = 315 staples ÷ 1.5
1 strip = 210 staples
Now halve both sides of the equation to find out how many staples there are in half a strip:
1 strip ÷ 0.5 = 210 staples ÷ 0.5
0.5 strips = 105 staples
Therefore, there are 105 staples in half (0.5) a strip.