Answer:
4.86
Step-by-step explanation:
Melanie uses 8.1 pints of blue paint and white paint for her bedroom
2/5 of this amount is blue paint
Therefore the amount of white paint can be calculated as follows
= 2/5
= 0.4×100
= 40%
60/100 × 8.1
= 0.6 × 8.1
= 4.86
Hence 4.86 pints of white paint will be used to paint the bedroom
12-14=-2 since 14 is 2 more than 12
Answer:
x= -12 and y=8
Step-by-step explanation:
Let's solve your system by substitution.
−x−y=4;x+2y=4
Step: Solve−x−y=4for x:
−x−y=4
−x−y+y=4+y(Add y to both sides)
−x=y+4
−x
−1
=
y+4
−1
(Divide both sides by -1)
x=−y−4
Step: Substitute−y−4forxinx+2y=4:
x+2y=4
−y−4+2y=4
y−4=4(Simplify both sides of the equation)
y−4+4=4+4(Add 4 to both sides)
y=8
Step: Substitute8foryinx=−y−4:
x=−y−4
x=−8−4
x=−12(Simplify both sides of the equation)
Answer:
x=−12 and y=8
