8a - 4 = 25 + 6 (a - 8)
(distribute the 6)
8a - 4 = 25 + 6a - 48
(combine like terms 25 - 48)
8a - 4 = 6a - 23
( subtract 6a from both sides)
2a - 4 = -23
(add 4 to both sides)
2a = -19
(divide both sides by 2)
a = - 9.5
////CHECK/////
8 (-9.5) - 4 = 25 + 6 ( -9.5 -8)
(plug each side into a calculator)
-80 = -80
FINAL ANSWER:
a = -9.5
14 books in 3 months is 35%
all of books is 100%
14- 35%
x- 100%
we calculate from proportions, crosswise:
Answer: Benito sign up to read 40 books.
Greetings,
n00nst00p :)
Hi!
The answer is C. It is a numerical expression because it contains only numbers and operation symbols.
The probability of drawing a black marble is 7/31 or .226 or 22.581%. To find the probability of these type of questions, add all together to get 31, then since there are 7 black marbles the probability would be 7/31.
The answer is c 28 because it is going by plus 4 <span />
