19. (X+5)-3
20. 2a
21.3b
22. 5y-5
23. 1/2n-15
Converting the fraction 1/30 into a decimal is very easy.
To get 1/30 converted to decimal, you simply divide 1 by 30.
1/30 as a decimal is:
<span>0.033333333</span>
(2x+1)(x-2) = 2x^2 - 4x +x -2= 2x^2-3x-2
This problem can be represented in a formula with fractions. To make it more simple, we are converting 5m30s to just pure seconds, which = 154 copies in 330 seconds.
You set up the formula like this: 154/330 = x/60. (it is x/60 because you want to know the x amount of copies per 60 seconds)
Cross multiply, you get 330x = 9240. Divide both sides by 330, you get:
x = 28 copies.
The final answer is 28 copies per minute
Answer:
the answer is C: m<CDB=63
