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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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The area of a square carpet tile is 900 square centimeters. What is the length of one edge of the tile in centimeters
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Let the side of one edge of tile = a cm.

So area of tile = (side)^2 = a^2
 
But area of tiles = 900 square centimeter.

So a^2 = 900

a =  \sqrt{900}
          = 30

So side of one edge of tile is = 30 cm
8 0
3 years ago
A city has a population of 210,000 people. Suppose that each year the population grows by 8%. What will the population be after
Ratling [72]

Answer:

in 13 years it will be at 432,480

Step-by-step explanation:

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2 years ago
Write down the factors of 55. Is 55 a prime or composite number? Explain how you know.​
horsena [70]

Answer:

Composite.

Step-by-step explanation:

because Prime numbers can only be recived when mulipltiy the number and itself, like 3.

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4 0
3 years ago
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PLEASE HELP ILL GIVE BRAINLIEST Which equation choice could represent the graph shown below?
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Answer:

A,   x(x-4)

Step-by-step explanation:

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2 years ago
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Need help with question 11 and 12
qaws [65]

Answer:

  11.  your choices are correct

  12.  132°

Step-by-step explanation:

11. The given equations can be (re)written to slope-intercept form. Only those lines with a slope of 2 will be parallel to the given line.

  A: y = 2x -8 . . . . . slope = 2, an answer

  B: y = -2x +1 . . . . . slope = -2, not an answer

  C: y = -2x +7 . . . . .slope = -2, not an answer

  D: y = 2x +2 . . . . . slope = 2, an answer

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12. The marked angles are supplementary, so ...

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Now, we can find the angle of interest.

∠PQR = (3x -6)° = (3·46 -6)°

∠PQR = 132°

4 0
3 years ago
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