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nasty-shy [4]
3 years ago
7

2 (-n -3) -7 (5 + 2n)

Mathematics
1 answer:
leonid [27]3 years ago
7 0

Answer: -16n-41

Step-by-step explanation:

first, distribute 2 through the parentheses:

<u>2(-n-3)</u>-7(5+2n) = <u>-2n-6</u>-7(5+2n)

second, distribute 7 through the parenthesis:

-2n-6<u>-7(5+2n) </u>= -2n-6<u>-35-14n</u>

Collect like terms:

<u>-2n</u>-6-35 and <u>-16n</u>-6-35

Calculate the difference:

-2n<u>-6-35</u>-14n = -16n-<u>41</u>

SOLUTION:

<u>-16n-41</u>

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Answer:

<h2>John has $15 and Alex has $33</h2>

Step-by-step explanation:

a systems of equations can be made from the information on the problem

x+y=48

x=2y+3

since x= 2y+3 substitute 2y+3 in the firat equation to get:

(2y+3)+y=48  -> 3y+3=48 -> 3y=45  -> y=15

plug in 15 for y in the second equation to solve for x

x+15 =48 --> x=33

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2 years ago
Liz ran 4/5 km on Monday and 56 KM on Tuesday  about how much did she run?
Dimas [21]

Answer:

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Step-by-step explanation:

4/5+56 =56.8

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3 years ago
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3 + 6 x (5 + 4) ÷ 3 -7?
ch4aika [34]

Answer:

Answer: 14

Step-by-step explanation:

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2 years ago
. If a car can travel 38 miles on 2.4 gallons of gas, how many miles could the car travel on 6 gallons of gas?
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Answer:

About 95 miles

Step-by-step explanation:

Let's set up a proportion using the following set up:

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We know the car can travel 38 miles on 2.4 gallons of gas.

38 miles / 2.4 gallons = miles/ gallons

We don't know how far the car can travel on 6 gallons. Therefore, we can say the car travels x miles on 6 gallons of gas.

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6*(38/2.4)=(x/6)*6

6*(38/2.4)=x

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Let's round to the nearest whole number. The 9 in the tenth place tells us to round up.

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The car can travel about 95 miles on 6 gallons of gas.

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3 years ago
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