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Vinil7 [7]
3 years ago
15

Can someone help me with all of these questions please

Mathematics
1 answer:
geniusboy [140]3 years ago
8 0

Answer:

1. 14 ft

2. 72 in

3. 11 ft, 28 ft

4. 8 in, 96 in

Step-by-step explanation:

1. The area of a rectangle = length x width. The area is 28 sq ft and the width is 2ft, therefore:

28 = length x 2

length = 28/2 = 14 ft.

2. The perimeter is (length x 2)+(width x 2). The perimeter is 86 in and the length is 25 in, therefore:

86 = (25 x 2) + (width x 2) = 50 + (width x 2)

36 = width x 2

36/2 = width = 72 in.

3. The area is 33 sq ft and the width is 3 ft, therefore:

33 = length x 3

33/3 = length

length = 11 ft

The perimeter is (length x 2)+(width x 2), therefore:

p = (11 x 2) + (3 x 2) = 22 + 6 = 28 ft.

4. The perimeter is 40 in and the length is 12 in, therefore:

40 = (12 x 2) + (width x 2) = 24 + (width x 2)

40 - 24 = width x 2 = 16

width = 16/2 = 8 in.

The area is length x width, therefore:

Area = 12 x 8 = 96 in.

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<em>Hey</em><em> </em><em>mate</em><em> </em><em>!</em><em>!</em><em> </em>

Step-by-step explanation:

[ Refer to the attachment ]

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3 years ago
The angles below are supplementary. What is the value of x?
Natalka [10]

<u>Answer:</u>

  • 12 is the value of x.

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

<u>Supplementary angles: Two angles that sum up to 180°</u>

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During the calendar year of 1971 a total of 171 deaths were caused by influenza in a city of 450,000 persons. The temporal distr
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Answer and Step-by-step explanation:

The computation of annual and quarterly mortality rates per 100,000 population is shown below:-

Quarterly mortality rates are

= \frac{Deaths}{Population\ in\ the\ city}\times Population

For the first quarter

= \frac{54}{450,000}\times 100,000

= 12  death per 100,000 population

For the second quarter

= \frac{43}{450,000}\times 100,000

= 9.5  death per 100,000 population

For the third quarter

= \frac{35}{450,000}\times 100,000

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For the fourth quarter

= \frac{39}{450,000}\times 100,000

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Now the annual mortality is

= \frac{Deaths}{Population\ in\ the\ city}\times Population

= \frac{171}{450,000}\times 100,000

= 38 death per 100,000 population

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3 years ago
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