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Ket [755]
3 years ago
15

Simplify 2√28 - 3√63. I will give BRAINLIEST!

Mathematics
1 answer:
Fofino [41]3 years ago
3 0

2\sqrt{28}-3\sqrt{63}=2\sqrt{4\cdot7}-3\sqrt{9\cdot7}=4\sqrt7-9\sqrt7=-5\sqrt7

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What are examples of the distributive property?
Elena L [17]
Here is an example:

3(4x +7)
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8 0
4 years ago
Joshua has a ladder that is 12 ft long. He wants to lean the ladder against a vertical wall so that the top of the ladder is 11.
Nataliya [291]

Answer:

The ladder is not safe at this height. The height from ground to top of the ladder is < 11.6 ft for safety reasons and this can be determined by using trigonometry functions.

Step-by-step explanation:

The ladder is not safe at this height. The height from ground to top of the ladder is < 11.6 ft for safety reasons and this can be determined by using trigonometry functions.

Given :

Joshua has a ladder that is 12 ft long.

He wants to lean the ladder against a vertical wall so that the top of the ladder is 11.8 ft above the ground.

For safety reasons, he wants the angle the ladder makes with the ground to be no greater than 75°.

Check the angle that the ladder makes with the ground:

The ladder is safe when the angle the ladder makes with the ground to be no greater than 75° but  is  so, the ladder won't be safe.

To make the ladder safe, the height should not be 11.8ft.

The height from ground to top of the ladder is < 11.6 ft for safety reasons.

3 0
3 years ago
A school team won 15 out of 20 games. Express this as a ratio in lowest terms.
zalisa [80]

Answer:

3/4 or 3:4

Step-by-step explanation:

To express this as a ratio, we simply place 15 over 20

mathematically that would be;

15/20

divide numerator and denominator by 5

= 3/4

8 0
3 years ago
:) Ramesh can complete a piece of work in 10 days. He worked for 4 days and left. If
IRINA_888 [86]

Answer:

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Step-by-step explanation:

3 0
3 years ago
ILL GIVE BRAINLIEST!!!!!!<br><br> Please explain!! Thank youuuuu!
Natali5045456 [20]

Answer:

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Step-by-step explanation:

you have to solve .3x = 1.5. this equals 5....since 5 is doubled to 10 you have to double 1.5 to 3.0

5 0
3 years ago
Read 2 more answers
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