Answer:
x=3
Step-by-step explanation:
Simplify 3(x-2)+5X
= 8x-6=18
Add 6 to both sides
8x=24
Divide by 8
x=3
Its c bc all of a triangles sides add up to 180 and if you do 32 + 93= 125 and then if you add 55 you get 180, sense the triangles are the same that means they have the same angles so if you add 93 + 55 you get 148 and 148 + 32 = 180
Convert 79% to a decimal which is .79
Then you multiply .79 by 32 which is 25.28
Your answer is 25.28
The four books had an average of 341 pages
Step-by-step explanation:
Given
Total number of books = 4
Pages in first book = x1 = 326
Pages in second book = x2 = 288
Pages in third book = x3 = 349
Pages in fourth book = 401
The average is given by:

The four books had an average of 341 pages
Keywords: Average, Division
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Answer:
C. 
Step-by-step explanation:
To find the number of black ribbons one would have subtract the amount of red ribbons from the total number of ribbons. Then one would have to express it as a proportion. Part over whole equals percent over 100. The number of black ribbons over total ribbons equals "b" over 100.