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kirill115 [55]
3 years ago
15

A student tracks their amount of hours of sleep per night for a week. If they sleep the following amount of hours each night, wh

at is their MEAN number of hours of sleep? 4, 5, 5, 5, 6, 9, 10
Mathematics
1 answer:
Fantom [35]3 years ago
3 0
The answer is 6.2857 you take all the values add them together then divide by the amount of values
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The perimeter of a playing field for a certain sport is 174 ft. The field is a rectangle, and the length is 45 ft longer than th
Leno4ka [110]

Answer:

21 ft by 66 ft

Step-by-step explanation:

From the question,

P = 2(L+W)............... Equation 1

Where P = Perimeter of the playing Field, L = Length of the playing Field, W = width of the playing Field.

If the Length of the Field is 45 ft longer than the width,

L = 45+W............ Equation 2

Substitute Equation 2 into equation 1

P = 2(45+W+W)

P = 90+4W............. Equation 3

Given: P = 174 ft.

Substitute into equation 3

174 = 90+4W

4W = 174-90

4W = 84

W = 84/4

W = 21 ft.

Substituting the value of W into equation 2

L = 45+21

L = 66 ft.

Hence the dimensions of the playing field is 21 ft by 66 ft

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2 years ago
F(x) = 4/x-9<br> g(x)=4/x + 9<br> find f(g(x))
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f(x)= \dfrac{4}{x-9} \\&#10;&#10;g(x)= \dfrac{4}{x+9} \\&#10;&#10;f(g(x))=f( \dfrac{4}{x+9} )\\&#10;&#10;= \dfrac{4}{ \dfrac{4}{x+9}-9} \\&#10;&#10;= \dfrac{4(x+9)}{4-9x-81} \\&#10;&#10;=- \dfrac{4x+36}{77x+9x} &#10;&#10;&#10;
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3 years ago
Joe has eaten 3/5 of a pizza. Jane has eaten 1/6 of a pizza.
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Answer:

3.6

Step-by-step explanation:

8 0
2 years ago
A park is rectangular with a length of ⅔ miles. If the area of the park is 3/9 square miles, what is the width?
Zielflug [23.3K]

Answer:

Area of the rectangular park = 2/3 square mile

Let us assume the width of the rectangular park = x

Then

The length of the rectangular park = 2 2/3 * x mile

                                                      = 8x/3 mile

Then

Area of the rectangular park = Length * Width

2/3 = (8x/3) * x

2/3 = 8x^2/3

(2 * 3)/3 = 8x^2

2 = 8x^2

x^2 = 2/8

x^2 = 1/4

x^2 = (1/2)^2

x = 1/2

So the width of the park is 1/2 feet.

Step-by-step explanation:

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