Answer: Option B.
Step-by-step explanation:
When we have an interval with lower bound m and upper bound M, such that:
m ≤ x ≤ M
The mid-point is:
(m + M)/2
in this case, we have:
m = 22
M = 27
then the mid-point is:
(22 + 27)/2 = 24.5
and we know that f = 7, then:
f*x = f times the mid-point = 7*24.5 = 171.5
The correct option is B.
N=10-7
n=3
Now
2n-2
2*3-2
6-2
4
A
Given a quadratic in standard form : y = ax² + bx + c ( a ≠ 0 ), then
The x-coordinate of the vertex is
= - 
y = - 3x² + 2x - 7 is in standard form
with a = - 3, b = 2 and c = - 7, hence
= -
= 
Substitute this value into the equation for y-coordinate
y = - 3 (
)² + 2 (
) - 7
= -
+
-
= - 
vertex = (
, -
) → A
Answer:
x = -2
Step-by-step explanation:
![3[- x + (2x + 1)] = x - 1](https://tex.z-dn.net/?f=3%5B-%20x%20%2B%20%282x%20%2B%201%29%5D%20%3D%20x%20-%201)
![= > 3[ - x + 2x + 1 ] = x - 1](https://tex.z-dn.net/?f=%20%3D%20%20%3E%203%5B%20-%20x%20%2B%202x%20%2B%201%20%5D%20%3D%20x%20-%201)
![= > 3[x + 1] = x - 1](https://tex.z-dn.net/?f=%20%3D%20%20%3E%203%5Bx%20%2B%201%5D%20%3D%20x%20-%201)



