Answer:
9m+6m^2n
Step-by-step explanation:
12mn-3mn=9mn
4m^2n+2m^2n=6m^2n
==> 9m+6m^2n
or rewrite as 3m(3+2mn)
Answer:
A) Exponential decay, 55% decrease
Step-by-step explanation:
The <em>b</em><em> </em>is less than 1, so that means it's decaying. Since <em>b</em><em> </em>= 0.45 and that the formula for an exponential decay is <em>a</em>(1- percent in decimal form)^x, all you have to do is find out what the decimal was BEFORE you subtracted it from 1.
So: 1 - x = 0.45
x = 0.55
0.55 = 55%
Answer:
x = 15
Step-by-step explanation:
(2x + 20) + 130 = 180
2x + 150 = 180
- 150 - 150
2x = 30
/2 /2
x = 15
Answer:
7-4ab-6
Step-by-step explanation:
(a+2b)(7a-3b)
7-3ab+7ab-6
7-4ab-6
Answer:
<u>p = -2q</u>
Step-by-step explanation:
<u>Given</u>
There is no solution.
- Slopes are equal
- px + 4y = 10
- 4y = -px + 10
- y = -p/4 + 5/2
- qx - 2y = 1
- 2y = qx - 1
- y = q/2 - 1/2
<u>Equating the slopes</u>
- -p/4 = q/2
- -p = 2q
- <u>p = -2q</u>