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WITCHER [35]
3 years ago
13

Find the geometric mean between 18 and 7. Write your answer in radical form.

Mathematics
1 answer:
solmaris [256]3 years ago
3 0

Answer: Choice A

Work Shown:

m = \text{geometric mean of x and y}\\\\m = \sqrt{x*y}\\\\m = \sqrt{18*7}\\\\m = \sqrt{9*2*7}\\\\m = \sqrt{9}*\sqrt{2*7}\\\\m = 3\sqrt{14}\\\\

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Simplify (2√27) x (3√32)
Kryger [21]

For this case we have the following expression:

(2 \sqrt {27}) (3 \sqrt {32})

We have to:

27: 3 * 3 * 3: 3 ^ 2 * 3\\32: 16 * 2: 4 ^ 2 * 2

Rewriting the expression and simplifying we have:

(2 \sqrt {3 ^ 2 * 3}) (3 \sqrt {4 ^ 2 * 2}) =\\(2 * 3 \sqrt {3}) (3 * 4 \sqrt {2}) =\\(6 \sqrt {3}) (12 \sqrt {2}) =\\72 \sqrt {3 * 2} =\\72 \sqrt {6}

Answer:

72 \sqrt {6}

5 0
4 years ago
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CAN SOMEONE PLEASE HELP ME WITH THIS ONE I DONT KNOW IF I’m right or no
Arturiano [62]

Answer:

Your right

Step-by-step explanation:

6 0
3 years ago
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Nate works at least 4 hours but not more than 9 hours. He earns $12.40 per hour. The function f(t) = 12.4t represents the amount
Mashcka [7]

The practical domain is all real numbers from 4 to 9, inclusive.

The practical range is all real numbers from 49.6 to 111.6, inclusive.

These are the correct options.

Explanation:

Given function is f(t) = 12.4t

Let us assume that Nate works 'x' hours so 4<x<9

And multiplying the hours with his earnings we get the range.

4*12.40=49.6 and 9*12.40=111.6. Let the amount earned be represented by y

Hence, domain can be represented as 4<x<9 and range can be represented as  49.6 < y < 111.6

7 0
3 years ago
Geoffrey and his babysitter spent 45 minutes eating dinner. if they finished dinner at 8:55 p.m., what time did they start eatin
77julia77 [94]
They finished eating at 8:10 pm
8 0
3 years ago
Three friends are sharing 5 cups of lemonade. If they share the lemonade equally, how many cups will each friend get?
sweet [91]

Answer:

5/3

Step-by-step explanation:

5 divide by 3 since there are 3 friends.

so 5/3 of the lemonade will be shared by each friend.

4 0
3 years ago
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