Answer
x=-2 and y=-3
Step-by-step explanation:
Step: Solvey=5x+7for y:
Step: Substitute5x+7 for y in 3x+y=−9:
3x+y=−9
3x+5x+7=−9
8x+7=−9(Simplify both sides of the equation)
8x+7+−7=−9+−7(Add -7 to both sides)
8x=−16
8x/8=−16/8
(Divide both sides by 8)
x=−2
Step: Substitute−2 for x in y=5x+7:
y=5x+7
y=(5)(−2)+7
y=−3(Simplify both sides of the equation)
Answer:
Step-by-step explanation:
150 ft in 30 seconds
150/30=5 we have 5 ft per second
in 10 seconds 5*10=50 ft
choice C
Answer:
B). 5+c
Step-by-step explanation:
we need to distribute -5-c to -1
we can do it as its written or we can flip it around and still get the same answer. When we distribute we multiply the varable or number out parenthesis with the ones in the paretesis
so -5 *-1=5
-c*-1=c
these two are positive now so they are no longer being subtracted from each other...
your answer is
B). 5+c
