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Vladimir79 [104]
3 years ago
5

HELP PLEASE ASAP DUE SOON !!!! AND SHOW WORK

Mathematics
1 answer:
dalvyx [7]3 years ago
3 0

Answer:

201.1 square units

Step-by-step explanation:

A=\pi r^{2}

A=\pi (8^{2})

A=\pi (64)

A ≈ 201.0619298....

A ≈ 201.1 square units

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Mike bought five items for lunch that Cost a total of 4.55 .Hit dogs cost .1.10 each and cookies cost 0.75 each. What equation c
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Answer:

c + h = 5 and

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Step-by-step explanation:

Assume that Mike bought only cookies and hot dogs.

The total can be represented as:

Cookies + Hot\ Dogs = 5 --- (1)

And the amount spent can be represented as:

Cost\ of\ cookies + Cost\ of\ hot\ dogs = 4.55 --- (2)

Required

Determine the system of equation

Let c represents the number of cookies and h, number of hot dogs.

Cookies + Hot\ Dogs = 5 implies c + h = 5

And

Cost\ of\ cookies + Cost\ of\ hot\ dogs = 4.55

Cost of cookies = 0.75 * c

Cost of hot dogs = 1.10 * h

So, we have:

0.75c + 1.10h = 4.55

Hence, the equations are:

c + h = 5 and

0.75c + 1.10h = 4.55

Solving for c and h

Make c the subject in c + h = 5

c = 5 - h

Substitute 5 - h for c in 0.75c + 1.10h = 4.55

0.75(5- h) + 1.10h = 4.55

3.75- 0.75h + 1.10h = 4.55

3.75 +0.35h = 4.55

Collect Like Terms

0.35h = 4.55 - 3.75

0.35h = 0.8

Solve for h

h = 0.8/0.35

h = 2.28571428571

h =2 -- approximated

Recall that:

c = 5 - h

c = 5 - 2

c =3

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If V= velocity, d = distance & time = t, then


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A boat travels at a rate of 18 kilometers per hour from its port. A second boat is 34 kilometers behind the
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Answer:

The second boat will catch up in 8.5 hours, and they will be 187 km from their port.

Step-by-step explanation:

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