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vodomira [7]
4 years ago
8

The express elevator in a skyscraper goes up 51 floors in 12¾ seconds. How many floors does the elevator go in 2 seconds? A. 8½

B. 4 C. 8 D. 5
Mathematics
2 answers:
netineya [11]4 years ago
6 0

Answer:

C. 8

Step-by-step explanation:

The elevator goes up 51 floors in 12.75 seconds.

Take 51/12.75 to get the number of floors per second.

51/12.75=4

4 floors multiplied by 2 seconds equals 8.

Therefore, answer C is correct.

PtichkaEL [24]4 years ago
4 0

the answer is A. 8 1/2, hope this helps

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Quadrant 1: D, H
Quadrant 2: A, I, E
Quadrant 3: F
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on the x axis: D
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4 years ago
What is the volume of a right rectangular prism when the height is 11 m and the area of the square base is 9m 2 ?
mario62 [17]

Answer:

The answer to your question is: 99 m²

Step-by-step explanation:

Data

height = 11 m

area of the square base = 9 m²

Formula

Volume of a right rectangular prism = area of the base x height

                                                           = 11 x 9     substitution

                                                           = 99 m²

7 0
3 years ago
PLEASE PLEASE HELP!!!!!!!!
Allushta [10]

9514 1404 393

Answer:

  • 326.6 square inches
  • 3402 square feet

Step-by-step explanation:

The net will be a rectangle representing the lateral area. Its length will be 2π(4 in), the circumference of the box, and its height will be 9 in, the height of the box. On either side of that rectangle will be an 8-in diameter circle representing the ends of the box.

The total surface area is given by the formula ...

  SA = 2πr(r +h)

For one box, the area is ...

  SA = 2(3.14)(4 in)(4 in +9 in) ≈ 326.6 in² . . . . area of one box

__

There are 144 square inches in a square foot, so the area required for 1500 boxes is ...

  (1500)(326.56 in²)/(144 in²/ft²) ≈ 3402 ft² . . . area of 1500 boxes

5 0
4 years ago
Which subsets of numbers does 1 2/3 belong to?
lana [24]
<h2>Answer:</h2>

<u>- Real and rational number</u>.

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

<em>It's a rational number because it can be represented by the integer of integer numbers. It's also a real number because rational numbers belong to the real set of numbers and the number doesn't contain an imaginary component (i).</em>

<em />

<em>It's not a natural or whole number because it can't be used to count or order things.</em>

<em>It's not an integer because it can't eb written without using a fractional component.</em>

<em />

7 0
1 year ago
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