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Darina [25.2K]
3 years ago
13

a sidewalk is 5ft wide, 6in deep, and 220 ft long. how many cubic yards of concrete are needed to fill it?

Mathematics
1 answer:
tangare [24]3 years ago
8 0

Answer:

1100/54 yds

Step-by-step explanation:

First convert inches and feet to yards

[3 ft = 1 yd, 12in = 1yd]

5ft = 1 2/3 yds

6in = 1/6 yds

220ft = 73 1/3 yds

Now use the volume formula,

b*w*h = A

[1 2/3] * [1/6] * [73 1/3]

= [5/3] * [1/6] * [220/3]

= [5/18] * [220/3]

= 1100/54 yds

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Vanyuwa [196]

Answer: Number D is correct

Step-by-step explanation:

Because, they can both go in each other and, they are the opposite of each other

6 0
3 years ago
Help will name Brainliest
11111nata11111 [884]

Answer:

x = \frac{\sqrt{22} }{2}

Step-by-step explanation:

Using the Pythagorean Theorem we can solve this problem.

The legs of the triangle will be the same (the dashes in the middle of the line indicates they are the same).

The Pythagorean Theorem will look like this:

a^{2}+a^{2}  = (\sqrt {11})^{2}

Now, let's find a:

2a^{2} = 11                The square of a radical will be whatever is under the arch

a^{2}=\frac{11}{2}                  Divide 11 by 2

\sqrt{a^{2} } = \sqrt{\frac{11}{2} }           Square root both sides

a = \frac{\sqrt{22} }{2}

Therefore, the length of side x is equal to \frac{\sqrt{22} }{2}.

Hope this helps!!

8 0
2 years ago
The area, A, of a circle is given by A = π r2, where r is the radius of the circle. Round all values to the nearest whole number
Artemon [7]

Answer:

A =363 cm^2

Step-by-step explanation:

A = π r^2

r = 11.3

Rounding to the nearest whole number

r =11

pi = 3.14

Rounding to the nearest whole number

pi = 3

A = 3 * 11^2

A = 3 *121

A =363 cm^2

3 0
3 years ago
A shoe store costs 1800 dollars a month to operate. The average wholesale cost of each pair of shoes is 25 dollars, and the aver
likoan [24]

Answer: 45

Step-by-step explanation:

The store has to sell  

45

pairs of shoes.

Explanation:

The store has a base cost of  

$

1800

, the cost per pair of shoes is  

$

25

. Each pair of shoes is sold for  

$

65

, therefore the profit per pair of shoes is

$

65

−

$

25

=

$

40

The formula for calculating the amount that needs to be sold would look like this;

40

x

=

1800

To determine the value of  

x

, we take this formula;

x

=

1800

40

x

=

45

Therefore, the store needs to sell  

45

pairs of shoes to break even.

3 0
3 years ago
If six girls can finish sweeping the floor of a hall in 45mins,how long will the same work take ten girls to do
AleksandrR [38]

Answer:

15 minutes i think

Step-by-step explanation:

45÷6=7.5

meaning 7.5 minutes per girl

so 4 girls would be 30 minutes of work

so 45-30=15

4 0
3 years ago
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