Y= 11-2x
Substitute in:
5x-2(11-2x)=-13
5x-22+4x=-13(combine like-terms)
9x-22=-13
9x=-13+22
9x=9
x=1
First do the equations in the parentheses
(21)+(28) the first one isn't negative anymore because a negative times a negative is a positive.
Now we just add them, 21+28=49
Answer:
Post images and questions?
Answer:
$1.50
Step-by-step explanation:
Let cheese pizza be C and mushroom pizza be M
Given 3C+2B+4M+=+12.50
and
3C+2B+2M=8.50
Using elimination
3C+2B+4+=12.50
3C+2B+2M=8.50
------------------------ subtract the second equation from the first one to get
2M=4.00
Solve for M
M+=+2.00 mushroom slice costs $2 each
Using that info, substitute for M in either equation to find C
3C+2B+2M=8.50
3C+2B+22A2=8.50
3C+2B+4=8.50
3C=4.50
C+=1.50
X^2+8x+15 is the area
because x+5 = length
and x +3 = width
(x+5)(x+3) =
x^2+3x+5x+15 =
x^2+8x+15 (area)