Answer:
81 books
Step-by-step explanation:
Every 4 months, Eva reads 36 books.
You first need to find the number of books Eva can read in 1 month
By dividing the ratio by you find that Eva can read 9 books per month.
You then add 4 and 5 together to get 9 because Eva has already read for 4 months and is going to read another 5 months after joining the book club.
You use the monthly ratio and multiply it by for the grand total of 81 books for the nine months that Eva has read.
Write what you know in an equation: 27=30%•X. Divide 27 by .30 to get X alone: 27/.30=90. 27 is 30% of 90 :)
3(x+4)=36
What you need to do is divide both sides of the equation by 3 in the first part
x+4=12
Now you move the constant towards the right side and change the sign
x=12-4
Subtract the numbers to find the answer
x=8, therefore to solve 3(x+4)=36 it will give you x=8 as your answer. Hope this helps ^^
The volume a cylinder is v=(area of base)h and since the area of the base is πr², you can write the equation a v=πr²h. Since the problem wants us to find what be is in the equation of a cylinder as v=Bh, we know that B=πr². The problem gave us the diameter of the circle so we no the radius is going to be the diameter (24) divided by 2 which equals 12. therefore B=12²π.
I hope this helps.