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Ilya [14]
3 years ago
15

A square has a side length of 20 cm. What are the dimensigns of a rectangle that has the same area as the square?

Mathematics
2 answers:
KiRa [710]3 years ago
8 0
First, lets find the area of the square; 2l = 2*20 = 40

Possibilities for the dimensions of a rectangle that has the same area as the square are 1-40, 2-20, 4-10, 5-8

Hope this helps!
Minchanka [31]3 years ago
7 0
40cm and 10cm are the dimensions
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Step-by-step explanation:

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3 years ago
Please help I really need your help
Amanda [17]

Answer:

1.  1200 \ kg/m^3

2.

a)

35 cm = 0.35 meters

11 dm = 1.1 meters

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b)

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Mass = 15.5925 kilograms

Step-by-step explanation:

1.

We know

Density = Mass/Volume

Given

Mass = 90 kg

Volume = 0.075 cubic meters

The SI unit for density is kilograms per cubic meters. Our dimensions are just that, so we just need to plug in the numbers into the formula and get our answer. Shown below:

Density = \frac{90}{0.075}=1200 \ kg/m^3

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2.

a)

We need to express 35cm, 11dm, and 15mm in meters

We know

100 cm = 1 meters, so

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We know 1 dm = 0.1 meters, so

11 dm * 0.1 = 1.1 meters

We know, 1mm = 0.001 meters, so

15 mm * 0.001 = 0.015 meters

b)

Volume of the Slab is length * width * height, in meters, that would be:

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2700 = Mass/0.005775

Mass = 0.005775 * 2700 =  15.5925 kilograms

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Step-by-step explanation:

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Step by step in picture below
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How do i solve using the substitution method?<br> x+y=-1 <br> y=-2x
leonid [27]

Answer:

(1, -2)

Step-by-step explanation:

<u>Step 1:  Set the second equation into the first </u>

x + (-2x) = -1

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Answer:  (1, -2)

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3 years ago
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