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lina2011 [118]
3 years ago
12

There were two containers of oil. There was twice as much oil in the second container as in the first one. After using 13 liters

of oil from the first container and 7 liters from the second one, the second container still had 3 times more oil than the first one. How many liters of oil in total were in both containers originally?
Mathematics
2 answers:
tangare [24]3 years ago
8 0

Answer:60 liters

Step-by-step explanation: Container 1=-13 x3 = 39

Container 2= -7 x3 21

39+21=  60 liters

Iteru [2.4K]3 years ago
3 0

Answer:

48 liters

Step-by-step explanation:

First container = x

Second container has twice as much oil.

Second container = 2x

13 liters of oil was used from first container.

x - 13

7 liters of oil was used from the second container.

2x - 7

Second container has 3 times more oil than the first one.

2x - 7 = 3(x - 13)

x - 7 = 3(x - 13)

x - 7 = 3x - 39

2x = 32

x = 16

First container = 16 liters

second container = 16 x 2 = 32 liters

Total = 16 + 32 = 48 liters

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zaharov [31]

Answer:

The mean number of the children is 1.2

<em></em>

Step-by-step explanation:

Given

Children: 0, 1, 2, 1, 2

Required

Determine the Mean number

The mean of a set is calculated as follows;

Mean = \frac{\sum x}{n}

Where x is the given set and n is the number of sets

In this case, n = 5 children

Hence;

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Mean = \frac{6}{5}

Mean = 1.2

<em>Hence, the mean number of the children is 1.2</em>

3 0
3 years ago
F(x) = (x-3) (x+8) (x-11) <br> What are the zeros of the polynomial?
aalyn [17]
<span>hello :
</span>F(x) = (x-3) (x+8) (x-11)
F(x) =0
<span>x-3= 0 or x+8=0 or x-11 = 0
x=3 or x=-8 or x=11
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</span>
6 0
3 years ago
how do you do this? i don't need it solved i just don't know how to do it. i know the note on the side says how to but i'm still
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Answer:

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Perimeter of triangle K= 19.0 units (3 s.f.)

Step-by-step explanation:

The length of each side of the triangle can be found using the distance formula below:

\boxed{d=  \sqrt{(y1- y2)^{2} + (x1 - x2)^{2}  } }

Please see the attached pictures for full solution.

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Answer:

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Phoenix [80]

Answer:

True

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