Answer:
x=8
Step-by-step explanation:
2x+7 = 23
2x=16
x=8
The correct answers are: B, and D.
Reason:
B.
18 / 4.5 = 4
6 / 1.5 = 4
D.
40 / 8 = 5
15 / 3 = 5
Since they both equal the same, they would be similar polygons for the rectangles.
Hope this helps!
<em>~ ShadowXReaper069</em>
Answer:
dy/dx
= d/dx [2x² + 5x - 3]
= 4x + 5.
Hence at x = 1, dy/dx = 4(1) + 5 = 9.
The slope of the tangent is 9.
d/dx (3/x)
= d/dx (3x^-1)
= 3 * d/dx (x^-1)
= 3 * [-1 * x^(-2)]
= -3/x².
What this for ? but i go with 5.5 hope this helped you