I would think x is equal to 0, since 0-5=-5, and of course 0+0=0
The answer is 7
3x-3=18 (take 3 to the other side to solve for x)
3x=18+3 (3 will be positive)
3x=21 (divide both sides by 3)
x=7
Answer:
x < -1
Step-by-step explanation:
Solve -.4x-1.2 >.8 for x.
Start by adding 1.2 to both sides, to isolate -0.4 x:
-0.4x > 0.4
Divide both sides by -0.4, remembering the reverse the direction of the inequality sign:
x < -1
The value of the scale factor is 3. Then the height and area of the triangle ΔABC will be 9 ft and 54 square ft.
<h3>What is dilation?</h3>
Dilation means the changing of the size of the object without changing the shape. The size of the object may be increased or decreased based on the scale factor.
The area of the triangle ΔDEF is 6 square ft. And the base length of the triangle ΔDEF is 4 ft.
The area of the triangle is given as

Then the height of the triangle ΔDEF will be

Then the scale factor will be

Then the height of the triangle ΔABC will be

Then the area of the dilated triangle ΔABC will be

More about the dilation link is given below.
brainly.com/question/2856466
#SPJ1