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natima [27]
3 years ago
9

A family has 2 cars. the first car has a fuel efficiency of 15 miles per gallon of gas and the second has a fuel efficiency of 2

0 miles per gallon of gas. during one particular week, the 2 cars went a combined total of 1300 miles, for a total gas consumption of 75 gallons. How man gallons were consumed by each of the cars that week?
car 1 :
car 2:
Mathematics
1 answer:
lora16 [44]3 years ago
8 0

Car 1: 15x

Car 2: 20y

15x+20y=1300

x+y=75

So y=75-x

15x+20(75-x)=1300

-5x+1500=1300

-5x=-200

x=40.

y=75-40

y=35

Car 1: 40 gallons

Car 2: 35 gallons


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grandymaker [24]

Answer:

12

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6 0
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Hi! Could you help me me out and solve these two problems? "eight less than the product of seven and xxx", and "the sum of six a
Ann [662]

Given:

The given statement are:

a. Eight less than the product of seven and x.

b. The sum of six and the product of three and d.

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Therefore, the required expression for the statement "Eight less than the product of seven and x" is 7x-8.

b.

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3 0
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spin [16.1K]

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7 0
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Firlakuza [10]

Answer:

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Step-by-step explanation:

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f(g(x) = f(x+3)

f(x+3) = (x+3)^2

f(g(x)) = (x+3)^2

f(g(5)) = (5+3)^2

f(g(5)) = 8^2

f(g(5)) = 64

b) g(f(x)) = g(x^2)

g(f(x)) = x^2 + 3

g(f(5)) = 5^2 +3

g(f(5)) = 25 + 3

g(f(5)) = 28

Hence the value of g(f(5)) is 28

5 0
3 years ago
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Answer:

x = 12

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3 0
3 years ago
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