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enyata [817]
3 years ago
14

Solve & Discuss It!

Mathematics
1 answer:
ivolga24 [154]3 years ago
5 0

Answer:

<u>There were 6, 9, 12 and 15 children if the number of adults at the beach were 8, 12, 16 and 20.</u>

Step-by-step explanation:

After reviewing the information given for solving the question, we notice that the number of adults and the number of children are two constants, where the number of children is the 75% of the number of adults (3/4 = 75%). In that case, for finding the number of children for every specific number of adults, we do the following calculations:

1. For 8 adults: Using the 75%, we multiply by it (8 * 75%) and we get that the number of children is 6.

2.  For 12 adults: Using the 75%, we multiply by it (12 * 75%) and we get that the number of children is 9.

3.  For 16 adults: Using the 75%, we multiply by it (16 * 75%) and we get that the number of children is 12.

4.  For 20 adults: Using the 75%, we multiply by it (20 * 75%) and we get that the number of children is 15.

<u>There were 6, 9, 12 and 15 children if the number of adults at the beach were 8, 12, 16 and 20.</u>

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Answer:

1.69\times 10^3feet/million year

Step-by-step explanation:

We are given that

Elevation of top of basalt in valley =4100 feet

Elevation of bottom of basalt in valley =2100 feet

Age of top of basalt in valley=15000 years

Age of bottom of basalt in valley=1.2 million years=1.2\times 10^6 years=1200000 years

We have to find the rate of basalt filling in the valley in feet per million yeas

Rate of basalt filling in the valley=\frac{Elevation\;of\;top\;of\;basalt\;in\;valley-elevation\;of\;bottom\;of\;basalt\;in\;valley}{age\;of\;bottom\;of\;basalt\;in\;valley-age\;of\;top\;of\;basalt\;in\;valley}

Rate of basalt filling in the valley=\frac{4100-2100}{1200000-15000}=\frac{2000}{1185000}=1.69\times 10^{-3} feet/year

Rate of basalt filling in the valley=1.69\times 10^{-3}\times 10^{6}=1.69\times 10^3feet/million year

6 0
4 years ago
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musickatia [10]
4 3/10 and 23/100 is the answer
3 0
3 years ago
The radius is 10 units, and each layer is one unit high. What is the volume of the cylinder in cubed units?​
alexandr1967 [171]

Answer:

Volume of cylinder is 6285.71 square units.

Step-by-step explanation:

Given the radius of cylinder 10 units. The height is twice its radius. we have to find its volume.

r=10 units

⇒ Diameter, d = 20 units

Also given height is twice its radius.

⇒ Height=2(r)=2(10)=20 units

<h2><em><u>Volume of cylinder=πr^2h</u></em></h2>

= 22/7 × 100×20

=22/7 × 2000

= 44000/7

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hence, volume of cylinder is 6285.71 square units.

6 0
2 years ago
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Answer: B

Step-by-step explanation:

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3 0
4 years ago
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Lucy bought three books at a bookstore. Here are their prices (in dollars).
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Answer:

41.82$

Step-by-step explanation:

The prices are

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To get the total of all what Lucy bought, You add the prices altogether.

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The total amount of what Lucy bought is 41.82$

8 0
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