Answer:
8.5
Step-by-step explanation:
This is a simple similar triangles problem
Since 15/7.5 = 2, we know that the ratio between the triangles is 2
This means that 17/x = 2, which means x = 8.5
I think it's 143 I hope it will help you
Answer:
Yes number 5 is, they are proportional because y is coresponding to x by multiplying by 1/5
No number 6 isn't, you can't go from 3 to 1 and 7 to 3
First, to make things easier, let's turn 5/4 into a decimal given a second is equal to 1000 milliseconds.
5/4 = 1,25
1,25 * 1000 = 1250 milliseconds = 1.25 seconds
So, we've found that 45 yards can be covered in 1.25 seconds. Now we'll use the rule of 3:
45 - 1.25
80 - x
Now we solve:
(80 * 1.25) / 45 = x
100 / 45 = x
2,22... = x
So, according to our answer, 80 yards can be covered in 2,22 seconds, which in fractions would be:

Hope it helped,
BioTeacher101
Answer:
A: [-8, infinity)
Step-by-step explanation:
range is the y-values