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sergij07 [2.7K]
3 years ago
12

If a car travels 180 km on 12 liters of gas, how many km per liter does the car get? Express in simplest form.

Mathematics
1 answer:
lora16 [44]3 years ago
6 0

Answer:

<u>5 kilo-meters per liter of gas</u>

Step-by-step explanation:

180 divided by 12 would be 180 / 12 = 5 km per liter

<em>(P.S., pls mark me brainliest, and have a nice day)</em>

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Three pens and two notebooks cost 8.25. two pens and three notebooks cost $8.00. how much would two pens and two notebooks cost?
goblinko [34]
3p + 2n = 8.25 ....multiply by 2
2p + 3n = 8 .........multiply by -3
-------------------
6p + 4n = 16.5 (result of multiplying by 2)
-6p - 9n = - 24 (result of multiplying by -3)
-------------------add
-5n = - 7.5
n = -7.5 / -5
n = 1.50 .............notebooks cost 1.50 each

2p + 3n = 8
2p + 3(1.50) = 8
2p + 4.50 = 8
2p = 8 - 4.50
2p = 3.50
p = 3.50/2
p = 1.75......pens cost 1.75 each

so 2 pens and 2 notebooks cost : 2(1.75) + 2(1.50) = $ 6.50 <==
6 0
3 years ago
1.
photoshop1234 [79]

Answer:

0.923

Step-by-step explanation:

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\frac{12}{13}= 0.92307692307 ≈ 0.923

So there should be a 0.923 chance that a purple marble is picked.

3 0
3 years ago
Read 2 more answers
(25 + 19) + 15 = (19 + 25) + 15<br><br><br> What property is that equation
malfutka [58]

Answer:

Commutative Property

Step-by-step explanation:

It looks like Associative property which is when you change the GROUP, but actually it’s commutative because it didn’t change any numbers in the group, just the order of where they were.

Associative: (25 + 19) + 15 = (15 + 19) + 25

Commutative: (25 + 19) + 15 = (19 + 25) + 15

It didn’t change the numbers, only the order. Therefore, it would be commutative property

8 0
3 years ago
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21 divided by x = -7 Can you PLS SOLVE X
VikaD [51]

Answer:

EASY. x=-3

Step-by-step explanation:

You need to divide 21 by -7. You'll get the same answer as me

Hope this helped!!

8 0
3 years ago
What can you do to isolate the variable on one side of the equation? ___________
suter [353]

Answer:

  Subtract (remove) 2 x-tiles from both sides.

  x = 5

Step-by-step explanation:

According to the rules of equality, you can add or subtract the same number(s) from both sides of the equal sign. Here, it is convenient to subtract the number of tiles that is on the side with the least number of tiles. That means we want to subtract 2 x-tiles from both sides.

The result of doing that is the answer:

  x = 5

4 0
3 years ago
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