We have that 100 is a fix amount and if x describes the additional charges per hour we have that the equations is 100 + 35x. The answer is y = 100 + 35x
Because this is a right triangle, so: 180-90=90
Thus, let 90 : 2 = 45
None of them, The best way to go along with a problem is to explain it with the child, and make sure they understand what they did wrong.
D. These are both safe, but can have effects on mental health.
Multiply bottom equation by -3 to add and eliminate y’s.
So...
5x-15y=10
+-9x+15y=18
You get -4x=28 so x=-7
Plug in to get y
5(-7)-15y=10
-35-15y=10
-15y=45
So y=-3
Check in other equation
3(-7)-5(-3)=
-21+15=-6
So x= -7 and y= -3