Answer:
Step-by-step explanation:
<u>Sides of the picture added margin:</u>
<u>Solution</u>:
- A(margin) = Total area - A(picture)
- (8 + 2x)(5 + 2x) - 5*8 = 30
- 4x² + 10x + 16x + 40 - 40 - 30 = 0
- 4x² + 26x - 30 = 0
- 2x² + 13x - 15 = 0
- x = (-13 + √(13² + 2*4*15))/4
- x = (-13 + 17)/4
- x = 1 cm
Note. The other root is ignored as negative.
Answer:
5.7082,5.009,5.09,5.7
Step-by-step explanation:
Answer:
y-intercepts: (-3,0) , (-1,0) , (1,0)
Step-by-step explanation:
Answer:
x + 8
Step-by-step explanation:
-4(x - 2) + 5x = 0
-4x + 8 + 5x = 0
<em><u>x + 8 = 0</u></em>