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3 years ago

-2(x + 4)-8-4Answer:

Mathematics

2 answers:

MariettaO [177]3 years ago

7 0

First distribute
a(b+c)=ab+ac
-2(x+4)=-2x-8
now we have
-2x-8-8=4
-2x-16=4
add 16 both sides
-2x=20
divide bot sides by -2
x=-10

DanielleElmas [232]3 years ago

3 0

To solve this question apply the distributive property to the value of -2. It becomes -2x-16=4. Adding 16 on both sides it becomes -2x=20, dividing by -2. The result is -10.

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x: Let the variable representing the number of people to travel in the group

y: Let the variable representing the number of miles traveled.

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Now, if there are three people in the group we have that $x = 3.$

$2.50 (3) + 0.75y \leq22\\7.5 + 0.75y \leq22\\0.75y \leq22-7.5\\0.75y \leq14.5\\y\leq \frac {14.5} {0.75}\\y\leq19.33$

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$2.50x + 0.75y \leq22$

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2 years ago