Answer:
d) 10
Step-by-step explanation:
x ÷
+ 8 = 13
substitute 10 for x:
⇒ 10 ÷
+ 8 = 13
solve:
1) divide 10 by
⇒ 10 ÷
= 5
2) add 8 to 5
⇒ 8 + 5 = 13
For this case we are going to assume the following:
m: whole number greater than zero.
n: integer greater than zero.
Where,
n> m
According to these assumptions, the percentage of growth is given by the following formula:
Answer:
the number of students did grow by:
Follow the order of operations
1. parentheses (13+5) = 18
2. multiplication 21*(13+5) = 21*18 = 378
3. add 9 + 21*(13+5) = 9 + 378 = 387
Hope this helps!
4x + 7x = 33
11x = 33
x = 3
4x = 4(3) = 12
7x = 7(3) = 21
12 and 21 are how you split 33 in to a ratio of 4 to 7.