Answer: 1/2x -5
Step-by-step explanation:
Half of x , less 5. (5 less just means subtract)
It would be the girls because 7 divided into 21 equally is 3. So there will be 7 groups of 3 girls.
Answer: i think it's b
Step-by-step explanation:
Answer:
4600
Step-by-step explanation:
We can write a proportion to find the total amount who attend university using the information given. A proportion is two equivalent ratios set equal to each other. Since 70% live on campus, then 30% live off campus and we are told that number is 1,380.

We will cross multiply the numerator of one ratio with denominator of the other. And then solve for y.
30y=100(1380)
30y=138000
y=4600.
There are 4600 students who attend the university.
M will represent Matt and J is Jackson. M-2.25=J. You minus the difference between them and show that it equals to Jacksons. A variable is a number in math that can vary.