Answer:
Step-by-step explanation:
Since the whole right side of that triangle is equal to 28 and the lower portion is 21, then we know the upper portion is 7. Set up a proportion using those sides and the fact that the 2 triangles are similar:
and cross multiply to get
21x = 126 and
x = 6
Answer:
a: about 800? nonfiction books in valley
b: valley and central has more fiction than nonfiction books
c: there's probably about 2600 books in hillside
Step-by-step explanation:
It is 3y because of the calculation being equivalent
Answer:

Explanation:
Here, we want to get the percentage of the gross pay is the take-home pay
Mathematically, we have to divide the take-home pay by the gross pay and multiply it by 100%
Her take-home pay is the difference between her gross pay and her deductions
We have this as:

We have this as:
Answer:
2/8
Step-by-step explanation:
because there are 2 blue marbles
add those up with the red marbles(6) and you get 8 marbles. But the chance for picking up a blue marble would be 2/8