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dlinn [17]
2 years ago
10

A family has two cars. The first car has a fuel efficiency of 40 miles per gallon of gas and the second has a fuel efficiency of

15 miles per gallon of gas. During
one particular week, the two cars went a combined total of 1625 miles, for a total gas consumption of 50 gallons. How many gallons were consumed by each of
the two cars that week?
Mathematics
1 answer:
lesya692 [45]2 years ago
4 0

Answer:

first car = 35, second car= 15

Step-by-step explanation:

40x+15y=1625

x+y=50

multiplying the 2nd by -15 and add the 2 equations, we get x= 35 and by substituting on second equation we get y= 15

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Answer:

Step-by-step explanation:

3(x + 2) = 3*x + 3*2

= 3x + 6

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3 years ago
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Find out the product of 2,12 and 3
drek231 [11]
You mean 2x3x12? if yes, it is 72.
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4(5x - 2) = 72<br> What do I do
Pepsi [2]

Answer:

x = 4

Step-by-step explanation:

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Do the distributive property

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Then add 8 to both sides to get 20x alone

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6 0
3 years ago
If z=3 and z*y=12 what does y+5 equal
mart [117]
Z = 3                                              (This equation is a given)

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3y = 12                                         (as z = 3, plug 3 into z)

3y/3 = 12/3                                   (isolate the y by dividing 3 to both sides) 
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y = 4                                             (answer for y)

y + 5                                             (what you are solving for)

(4) + 5 = 9                                    (As y = 4, plug in 4 for y in this equation)

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9 is your answer           

hope this helps
5 0
3 years ago
How to do this? or get this started?
Ne4ueva [31]
You're right on what you've been doing

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