3 years ago

Why is the square root of a perfect square always rational

Mathematics

1 answer:

Vilka [71]3 years ago

8 0

Because all the sides are equal

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How would I do this?

iogann1982 [59]

Answer:

A triangle is normally 180 degrees only.

Step-by-step explanation:

So, you have one 90 degree angle, and on 42.7 degree angle. Add those up to 132.7. Now, you would subtract that from 180, meaning that the answer is A, 47.3.

Good luck :DD

4 0

3 years ago

Twice a number plus 5 is -3.<br> I don’t understand it help please

VMariaS [17]

Answer:

2n+5 =3

n=-1

The number is -1

Step-by-step explanation:

Let n be the number

Twice the number

Plus 5

2n+5

is means equals

2n+5 =3

Now we want to solve

Subtract 5 from each side

2n+5-5 = 3-5

2n = -2

Divide each side by 2

2n/2 = -2/2

n = -1

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4 years ago

Gretta wrapped 15 presents every 20 hours. At that rate, how long, in hours, will it take to wrap 18 presents? label optional

Elza [17]

Answer:

40 hours

Step-by-step explanation:

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3 years ago

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A=1/2h(a+b) <br> what is h

Ilya [14]

Answer:

$h = \frac{2 A}{(a + b)}$

Step-by-step explanation:

$A = \frac{1}{2} h(a + b) \\ \\2 A = h(a + b) \\ \\ \frac{2 A}{(a + b)} = h \\ \\ \huge \red{ \boxed{h = \frac{2 A}{(a + b)} }}$

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4 years ago

Choose the option that correctly completes the statement.

Dennis_Churaev [7]

3 diagonals can be drawn, forming 4 triangles

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3 years ago