The minimum Sam need to get is a 70.
70 + 60 = 130
130/2 = 65
Our first expression is equal to zero:
![\frac{x^2-121}{x+11}= \frac{11^2-121}{11+11} = \frac{121-121}{22}=0](https://tex.z-dn.net/?f=%5Cfrac%7Bx%5E2-121%7D%7Bx%2B11%7D%3D%20%5Cfrac%7B11%5E2-121%7D%7B11%2B11%7D%20%3D%20%5Cfrac%7B121-121%7D%7B22%7D%3D0)
So we simply find the expression that is equal to zero.
The final answer is a.
Answer:
9/4
Step-by-step explanation:
Answer:
Step-by-step explanation:
19. x = 8
20.t=5
The formula of a lateral area of a triangular prism is
LA = (1/2)*(perimeter of a triangle)*h
The perimeter of a triangle is the total of all sides.
Since the length of the base of a triangle is not given yet, use the Pythagorean theorem
base² = 7² + 24<span>²
base</span><span>² = 625
base = 25 cm
The perimeter is 7 + 24 + 25 = 56 cm
Finally the lateral area is
LA = (1/2)*56*30 = 840 cm</span><span>²</span>