Answer:
k=99
Step-by-step explanation:
k/9 + 7 = 18
Subtract 7 from each side
k/9 +7-7 = 18-7
k/9 = 11
Multiply each side by 9
k/9 *9 = 11 *9
k = 99
Answer:
It is increasing in the interval (-∞, 3/2).
Step-by-step explanation:
y = -x^2 + 3x + 8
The derivative is:
dy/dx = -2x + 3
This is the slope of tangent to the curve so when f(x) is increasing
-2x + 3 > 0
-2x > - 3
x < 3/2
So it is increasing in the interval (-∞, 3/2)
Answer:
6 in
Step-by-step explanation:
2/3 = 4/x
(4*3)/2
Remembering PEMDAS we solve like this
5•6=30 6÷2=3 30-3=27
27 is answer. it is easy, just replace the letter with the number and solve it