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Anna007 [38]
3 years ago
11

Sergio dives into the water and it takes him 6 seconds to reach the bottom of a pool that is 8 feet deep. What is the best numbe

r to describe Sergio's rate of speed in feet per second?
Mathematics
1 answer:
marta [7]3 years ago
8 0

Answer:  1.33

Step-by-step explanation:

Given : Time taken by Sergio to reach the bottom of a pool = 6 seconds

The depth of the bottom of the pool = 8 feet

We know that ,

\text{Speed}=\dfrac{\text{Distance}}{\text{Time}}\\\\=\dfrac{8}{6}\text{feet per second}\\\\=1.33333333333\text{ feet per second}\\\\\approx1.33\text{ feet per second}

Hence, the  best number to describe Sergio's rate of speed in feet per second is 1.33.

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A group of people pays$720 for admission tickets to an amusement part. The price of an adult ticket is $15 and a child ticket is
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Answer:

15

Step-by-step explanation:

Set the number of children to n.

The number of adults is, thus, n + 25.

The total price of admission is $720, made up of adult tickets and child tickets.

The children paid $8 per child, or

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The adults paid $15 per adult, or

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These sum of these is equal to the total cost of $720.

8*n + 15*(n + 25) = 720

8n + 15(n + 25) = 720

Multiplying 15 with both n and 25.

8n + 15n + 25*15 = 720

8n + 15n + 375 = 720

Subtracting 375 from both sides.

8n + 15n + 375 - 375 = 720 - 375

8n + 15n = 345

Adding together 8n and 15n.

23n = 345

Dividing both sides by 23.

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As n is the number of children, there are 15 children in the group.

Answer: 15

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If the cost, C, for manufacturing x units of a certain product is given by C=x²-10x+65, find the number of units manufactured at
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Step-by-step explanation:

You solve this by factoring.

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