Step-by-step explanation:
=(-2)2+8(-2)+18(-2)+12
=4-16-36+12
=4+52+12
=56+12
=68
OR
=4-16-36+12
= -12-24
= -36
Answer:
2
Step-by-step explanation:
7x + 3 = 8x + 1
2 = x
these are geometry problems.
Answer:
Pic 1: 
Pic 2: 
Step-by-step explanation:
<u>Picture 1:</u>
<u />
First, add the 2x and x together for 3x
Then add 3 to both sides of the equation
Finally, divide each side by 3.
<u>Picture 2:</u>
<u />
<u />
First, add 7x and x together for 8x
Then, minus 20 from both sides of the equation
Finally, divide each side by 8.
Answer:
14.8
Step-by-step explanation:
The Pythagorean theorem applies.
... x² = 7² + 13² . . . . . the square of the hypotenuse is the sum of the squares of the legs
... x² = 218
... x = √218 ≈ 14.8
2x+9+3x+x combine like terms 2x+3x+x=7x rewrite 7x+9
hope this helps have a nice nite