Answer:
Step-by-step explanation:
Linear pairs
(4x + 1) + 75 = 180
Add the like terms
4x + 76 = 180
Subtract 76 from both sides,
4x = 180- 76
4x = 104
Divide both sides by 4
x = 104/4
x = 26
Answer:
836.8
Step-by-step explanation:
<span>X(1+y)=z
Multiply x by 1 and y
x + xy=z
Divide y on both sides
x + x = z/y
Add x to x
2x = z/y
Divide 2 on both sides
Final Answer: x= z/y/2
Word Form: x equals z divided by y all over two.</span>
Answer:
C, (12, -1)
Step-by-step explanation:
x - 2y = 14
x + 3y =9
Add 2y to both sides
x = 14 +2y
Substitute this into the second equation and solve
14 + 2y + 3y = 9
5y = 9 - 14 = -5
5y = -5
y = - 1
(you don't need to do this step because there is only one equation with y=-1, but just in case...)
Plug y into the first equation:
x - 2(-1) = 14
x - (-2)= x+2
x + 2 =14
x =12
Therefore, the answer is (12, -1)
The answer is C
The 33% discount is $13.20, so the cost of the sweater is now $26.80