The two "shorter" sides are referring to the legs of the triangles, because the hypotenuse is the largest side. Looking at this, we can find that it's a 3-4-5 triangle, which means that the scaling factor is 3, because 9/3 =3, 12/3=4, meaning we multiply 5 by 3 to get 15.
Number 3: x+x+100= 180 x=40
number 4: x+x+112=180 x= 34
2nd one i think tbh idek i haven’t done this kind of math in like 3 years
It is given in the question that,
Julio is paid 1.2 times his normal hourly rate for each hour he works over 29 hours in a week. Last week he worked 34 hours and earned $434.00.
And Julio's normal hour rate is r.
So the earning equation is


This is reasonable, because working 34 hours with a rate of $12 per hour is

And $408 is close to $434.