<span>D.=12</span><span>, </span><span>C.≈38</span><span> and </span><span>A.≈113
Hope this helps!</span>
Y = x^2 - 2x - 3
y = -x + 3
-x + 3 = x^2 - 2x - 3
x^2 - 2x - 3 + x - 3 = 0
x^2 -x - 6 = 0
(x - 3)(x + 2) = 0
x - 3 = 0 y = -x + 3
x = 3 y = -3 + 3
y = 0
x + 2 = 0 y = -x + 3
x = -2 y = -(-2) + 3
y = 2 + 3
y = 5
solutions are : (3,0) and (-2,5)
Answer:
100
Step-by-step explanation:
Suppose there are 2n+1 students in the class. If n+1 of them score 91, and n of them score the high score h, for the average to be 95, we must have ...
91(n+1) +nh = 95(2n+1)
91n +91 +nh = 190n +95
nh = 99n +4
h = 99 +4/n
The high score must be greater than 99. The high score must be 100.
