Answer is x=-12
To solve:
-3x=36
Step 1: Change -3x to 3x and 36 to -36.
3x=-36
Step 2: Divide both sides by 3.
3x/3=-36/3
So, the answer is x=-12.
Answer:
Yes
Step-by-step explanation:
It passes the vertical line test meaning no two points have the same x value
y=−40
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
4−y5=2−2y8
4+−15y=2+−14y
−15y+4=−14y+2
Step 2: Add 1/4y to both sides.
−15y+4+14y=−14y+2+14y
120y+4=2
Step 3: Subtract 4 from both sides.
120y+4−4=2−4
120y=−2
Step 4: Multiply both sides by 20.
20*(120y)=(20)*(−2)
Answer:
y=−40
Answer:
The dimensions are 4 millimetres by 10 millimetres
Step-by-step explanation:
The area of the first rectangle is 5*8=40 square millimetres. Let's call the width of they yellow rectangle w, and the length l. Now you can set up the following system of equations:
l*w=40
2l+2w=28
Isolate one of the variables to substitute:
l=40/w
2(40/w)+2w=28
80/w+2w=28
Multiply both sides by w:
80+2w^2=28w
Move everything to one side:
2w^2-28w+80=0
Factor the quadratic:
2(w^2-14w+40)=0
2(w-10)(w-4)=0
w=4 or 10
l= 10 or 4
Hope this helps!