Answer:3
Step-by-step explanation:
Side by side on the left ,side by side on the right and two in the middle
x correct answers
23 - x incorrect answers
82 = 4x + -1(23 - x) = 3x - 23
105 = 5 x
x = 105/5 = 21
21 right 2 wrong 2 unanswered
Check: 4(21) -1(2) = 84-2=82 good
Answer:
a and -b is the answer
Step-by-step explanation:
(x-a)(x+b) = 0
x-a = 0 and x+b = 0
then
x = a and x = -b
Answer: 2.524 ft----
The equation for the surface area of a sphere is

.
SA = surface area
r = radius
You're told that the surface area, SA = <span>80 square feet. Plug that into the equation and solve for r:
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