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zimovet [89]
3 years ago
11

It takes 28minutes for 7 people to paint 7 walls. How many minutes does it take 14 people to paint 14 walls?

Mathematics
1 answer:
charle [14.2K]3 years ago
7 0

Answer:

56 minutes

Step-by-step explanation:

14 people painting 14 walls is simply <em>double</em> (x2) 7 people painting seven walls.

We know this because 7 x 2 = 14

So, we will have to double the amount of time it takes them to paint.

28 x 2 = 56

It will take 56 minutes for 14 people to paint 7 walls!

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Alona [7]

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5 0
3 years ago
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Cameron ran 3.8 miles per every 1.9 miles that Samantha ran and if Samantha and 7.6 miles how far did Cameron run
bija089 [108]
3.8 / 1.9 = x / 7.6....3,8 miles to 1.9 miles = x miles to 7.6 miles
cross multiply
(1.9)(x) = (3.8)(7.6)
1.9x = 28.88
x = 28.88 / 1.9
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8 0
3 years ago
A restaurant has a total of 30 tables which are of two
ki77a [65]

Answer:

Total number of tables of first type       = 23.

Total number of tables of second type = 7

Step-by-step explanation:

It is given that there are 30 tables in total and there are two types of tables.

Let's call the two seat tables, the first type as x and the second type as y.

∴                                             x + y = 30                        ......(1)

Also a total number of 81 people are seated. Therefore, 2x number of people would be seated on the the first type and 5y on the second type. Hence the equation becomes:

                                            2x + 5y = 81                        .....(2)

To solve (1) & (2) Multiply (1) by 2 and subtract, we get:

                                                      y = 7

Substituting y = 7 in (1), we get x = 23.

∴ The number of tables of first kind         = 23

  The number of tables of second kind   = 7

4 0
3 years ago
One cubic foot of sand weights 100 pounds. A square sandbox with 5-foot sides has half of a food of sand in it. How many pounds
inessss [21]
150 pounds is what i think i hpe its right good luck!  from thatgirllexa
6 0
3 years ago
Need help with this!
adell [148]

9514 1404 393

Answer:

  a(n) = 1/2(-8)^(n-1)

Step-by-step explanation:

The general term of a geometric sequence is ...

  a(n) = a(1)×r^(n-1)

where a(1) is the first term, and r is the common ratio.

Here, the first term is a(1) = 1/2. The common ratio is the ratio of any two sequential terms: r = 32/-4 = -8. Then the explicit formula is ...

  a(n) = 1/2(-8)^(n-1)

3 0
3 years ago
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