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3 years ago

30 points please help on these questions!

Mathematics

1 answer:

hichkok12 [17]3 years ago

5 0

Answer:

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The answer to this question here 0.1x=0.2(x+2) <br> x=-4

Elenna [48]

Answer:

the answer is 76

Step-by-step explanation:

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Find the circumference of the circle use 3.14 for pi when the radius is 13 cm

Alchen [17]

Answer:

C =81.64 cm

Step-by-step explanation:

The circumference of a circle is given by

C = 2*pi*r

C = 2 * 3.14 * 13

C =81.64 cm

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Can someone help ASAP !!

Olin [163]

Answer:

I can't help.

Step-by-step explanation:

There is no question, so therefore, I can not help.

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3 years ago

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What is -3 the sum of 5

Ainat [17]

The solution is 2. -3+5=2

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4 years ago

Find the missing part.

sveta [45]

Answer:

The answer is $a = \frac{15}{4}$

Step-by-step explanation:

We have to:

$cos(\theta) = \frac{adjacent\ side}{hypotenuse}$

So, if we take the 60 degree angle of the smallest triangle, we have to:

$cos(60) = \frac{a}{x}$

We do not know x. But if we take the sine of the angle of 30 degrees and the main triangle we have:

$sin(30) = \frac{x}{15}\\\\x =\frac{15}{2}$

Then:

$cos(60) = \frac{a}{\frac{15}{2}}$

$a = cos(60)\frac{15}{2}$

$a = \frac{15}{4}$

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3 years ago