Answer:
a) 17.5
b) 15.6
c) 13.3
d) 21.51
Step-by-step explanation:
The given function is equal to:
f(x)=kx^2
where

where y=23
Clearing k=0.00025
a) 
b)
c) The function is equal to:
f(x)=k(1+2x)

where y=20
k=0.0024

d) 
Answer:
2x² - 2x + 7
Step-by-step explanation:
Given
(8x² + 9) - (6x² + 2x + 2) ← distribute by - 1
= 8x² + 9 - 6x² - 2x - 2 ← collect like terms
= (8x² - 6x²) - 2x + (9 - 2)
= 2x² - 2x + 7
Answer:
f(-7) = 157
Step-by-step explanation:
3x² + 10
3(-7)² + 10
3(49) + 10
147 + 10
157
<em>good luck, i hope this helps :)</em>
Hello,
1) cos t* tan t=cos t* sin t/cos t =sin t (if cos t≠0)
2)cos t * cosec t =cos t /sin t =√(1-sin² t) / sin t.
Answer:
The system has unique solution.
Using backward substitution we have
1. 
2.

3.

4.

The the solution is 