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Alina [70]
2 years ago
7

What is 20 minus -13

Mathematics
1 answer:
Sholpan [36]2 years ago
6 0
The answer is 33 there you go
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A mother is currently 7 times older than her son. In 3 years time, she will be 5 times older than her son. Let x and y be the pr
Softa [21]

Answer:

If the child is currently 6 years old and the mom is 42, in three years she'll be 45 and he'll be 9

Step-by-step explanation:

The son is y and the mom is x

x=7y

x+3=5(y+3)

7y+3=5y+15

7y=5y+12

2y=12

y=6

8 0
3 years ago
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A,B,C or D for the peanuts
disa [49]

Answer:    I THINK it is c

<h2>Step-by-step explanation:</h2>

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3 years ago
Fifteen students are going hiking on their spring break. They plan to travel in three vehicles—one seating 7, one seating 5, and
andriy [413]

Answer:

The students can group themselves in 360360 ways

Step-by-step explanation:

For this exercise we need to use the following equation:

\frac{n!}{n1!*n2!*...*nk!}

This equation give us the number of assignation of n elements in k cell, where n1, n2, ..nk are the element that are in every cell

In this case we have 15 student that need to be assign in three vehicles with an specific capacity. This vehicles would be the equivalent to cells, so we can write the equation as:

  \frac{15!}{7!*5!*3!}

Because the first vehicle have 7 seating, the second vehicle have 5 seating and the third vehicle have 3 seating.

Solving the equation we get 360360 ways to organized 15 students in three vehicles with capacity of 7, 5  and 3 seating.

5 0
2 years ago
Pleaseeee helpppp ):
tigry1 [53]

Answer:

4

_

3.14159265358979323846264338327952884197169393751

3 0
3 years ago
Help me with this please ​
Bess [88]

Answer:

A

Step-by-step explanation:

Brainliest PLEASE

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2 years ago
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