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xenn [34]
3 years ago
12

Please help me, thank you!!

Mathematics
1 answer:
Aneli [31]3 years ago
4 0
Okay, the answer for the first problem is -24x-54. The second is -12k^4-16k^3+20k^2. Finally. the third one is -24x^3. Hope you get it.
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How to simplify the square root of 3 over the square root of 21
Alika [10]

3 * 7 = 21, so

\sqrt{21}=\sqrt{3\cdot7}=\sqrt3\sqrt7

Then

\dfrac{\sqrt3}{\sqrt{21}}=\dfrac1{\sqrt7}

and you can rationalize the denominator to write this as

\dfrac1{\sqrt7}\cdot\dfrac{\sqrt7}{\sqrt7}=\dfrac{\sqrt7}7

7 0
4 years ago
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princess wanted to plant 28 lillies in rows. all rows contain the same number of plants. there are between 5 and 12 plants on ea
marysya [2.9K]
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4 years ago
The liquid volume of Eric's water bottle is 3 liters. What is the approximate liquid volume of 5 of these bottles in milliliters
zhuklara [117]

Answer:

15,000 milliliters

Step-by-step explanation:

The volume of Eric's water bottle = 3 liters

Now let's find the volume of the 5 bottles.

The volume of 5 Eric's water bottles = 3 liters * 5 = 15 liters

Now let's convert 15 liters in milliliters.

1 liter = 1000 milliliters

15 liters = 15 *1000 = 15,000 milliliters

The liquid volume of 5 of Eric's water bottles = 15,000 milliliters.

Thank you.


6 0
3 years ago
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John is buying new shoes. He finds the shoes he wants on sale for 30%, and the original price is $88. How much will he pay for t
Brilliant_brown [7]

Answer:

61.6 dollars

Step-by-step explanation:

So, lets go over what we know:

The shows orginally cost 88 dollars.

They are 30% less than that.

This basically means that the shoes will cost 70 percent of their orginal price.

We can basically find the new cost by multiplying the 88 dollars by the 70 percent.

Or, multiplying 88 by 0.7, which is the decimal form of 70%.

88*0.7=61.6

How did I get this?

Multiply 80 by 0.7:

7*8=56

We have 0.7 so it = 5.6

However, it's tens place is 80, not 8, so it will be = 56

It is the same thing in the ones place, however it is 8 not 80, so it will be 0.7*8

= 5.6

56+5.6=61.6

So 61.6 is our answer.

Hope this helps!

4 0
3 years ago
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Pleas help me i dont know how to do
SOVA2 [1]

Answer:

100 miles per hour

Step-by-step explanation:

I looked up an example and this best fits

hope this helped, tell me if I am wrong.

6 0
3 years ago
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