Peter is trying to work out by completing sit-ups and push-ups in order to gain muscle mass. originally, peter was completing five sit-ups for every three push-ups, but then he injured his shoulder. after the injury, peter completed the same number of repetitions as he did before his injury, but he completed seven sit-ups for every one push-up. during a training session after his injury, peter completed eight push-ups. how many push-ups was peter completing before his injury?

24 push- ups

Step-by-step explanation:

before injury the sit-up to push-up ratio was 5:3

after the injury the sit-up to push-up ratio is 7:1

now it is given that  after his injury, Peter completed eight push-ups and he  completed the same number of repetitions as he did before his injury

now eqauting the ratio 1 = 8

therefore 3= 3*8 = 24

so, peter did 24 push-ups after his injury

109 trust me

step-by-step explanation:

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions