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Salsk061 [2.6K]
2 years ago
9

Free brainliest and what is 21/7?

Mathematics
2 answers:
astraxan [27]2 years ago
5 0

Answer:

if your dividing then 3 but if you want 21 sevenths as a mixed number then it would be 3.

Step-by-step explanation:

to find the quotient, you need to find out what multiplied by 7 gives you 21. (thats easy 3) so there is your answer. to find the mixed version of 21 sevenths you need to divide 21 by 7 ( literally what  i just showed...) and you get 3.

<u><em>HOPE THIS HELPS!!!</em></u>

kykrilka [37]2 years ago
5 0

Answer:

That would be 3 because 7x3 is 21.

Step-by-step explanation:

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Five bells begin to ring together and they ring at intervals of 3, 6, 10, 12 and 15 seconds, respectively. How many times will t
Evgen [1.6K]

Answer:

60 times will they ring together at the same second in one hour excluding the one at the end.

Step-by-step explanation:

Given : Five bells begin to ring together and they ring at intervals of 3, 6, 10, 12 and 15 seconds, respectively.

To find : How many times will they ring together at the same second in one hour excluding the one at the end?

Solution :

First we find the LCM of 3, 6, 10, 12 and 15.

2 | 3  6  10  12  15

2 | 3  3   5   6  15

3 | 3  3   5   3  15

5 | 1    1  5   1    5

  | 1    1   1   1     1

LCM(3, 6, 10, 12,15)=2\times 2\times 3\times 5

LCM(3, 6, 10, 12,15)=60

So, the bells will ring together after every 60 seconds i.e. 1 minutes.

i.e. in 1 minute they rand together 1 time.

We know, 1 hour = 60 minutes

So, in 60 minute they rang together 60 times.

Therefore, 60 times will they ring together at the same second in one hour excluding the one at the end.

6 0
3 years ago
Graph y = 4x - 1. When x = -2, what is the ordered pair of the solution?
Alenkinab [10]

(-9, -1)

(-9,-1) . -1 because that is the y intercept from the equation.

-9 because when you substitute -2 for x, and multiply by 4, you get -8. Then you subtract one, making the x value -9.

Therefore, the ordered pair of the solution is (-9,-1)

Hope this helps, please consider marking branliest if it did.

7 0
3 years ago
Please help me thank you
laila [671]
Parallel lines have the same slope. The equation of the parallel line is therefore:

y = x + b

Plug in the values you are given to find b:

2 = -3 + b

b = 5
6 0
3 years ago
Find the diagonal of a rectangular frame which measures 77 in. by 36 in.
Cerrena [4.2K]

Answer:

85

Step-by-step explanation:

think about the diagonal of the frame, breaking up a rectangle into 2 right angled triangles. we are already given the legs of the triangle (77, and 36) and now we have to solve fro the hypotenuse (or the diagonal). so use pythagorean theorem :

77^2 + 36^2 = c^2

7225 = c^2

c = 85

5 0
3 years ago
The area of a rectangle is 38.25 square yards and its base is 9 yards. What is the height? Do not round your answer.
Romashka [77]

Answer:

4.25 yards

Step-by-step explanation:

Area of rectangle = Base x Height

or

Height = Area of Rectangle ÷ Base

In this case, Area =38.25 sq yards and Base = 9 yards

Height = 38.25 ÷ 9 = 4.25 yards

3 0
3 years ago
Read 2 more answers
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