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katrin2010 [14]
3 years ago
14

How do I find the angle of something

Mathematics
1 answer:
Alika [10]3 years ago
7 0

Ok, so think of a house. The sides and the floor meet up and forms a right angle, at 90 degrees. Now think about the gaps in a protractor (the piece of plastic that measures angles). The gaps corner is an acute angle, about 75 degrees.

To find the angle of something, you need to look at were the objects corners are, and if needed, use a device to measure the angle.

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4. find the real number roots. sqrt-0.25
e-lub [12.9K]

Given is square root of a negative real number, i.e. \sqrt{-0.25}

When we find square root of positive real numbers, we get Real answers.

But when we find square root of negative real numbers, we get Imaginary answers. To solve them, we can split the given negative number into product of -1 and the number itself but with positive sign. e.g. -4 = -1 x 4.

For square root of -1, we use english letter 'i' called Imaginary unit i.e. \sqrt{-1} = i

Now we can use -0.25 = -1 x 0.25

\sqrt{-0.25} =\sqrt{-1*0.25} \\\\ \sqrt{-0.25} =\sqrt{-1}*\sqrt{0.25} \\\\ \sqrt{-0.25} =i*0.5 \\\\ \sqrt{-0.25} =0.5i

Hence, "0.5i" is the final answer.

3 0
3 years ago
Read 2 more answers
Two thirds of a number is 3 1/2 more than three eights of a number. find the number
julsineya [31]
2/3x = 3.5 + 3/8x
8 • (2/3x) = 3.5 + 3 • (3/8)

16/24 X = 3.5 + 9/24 X
16/24x - 9/24x = 3.5
7/24 X = 3.5
7x/24 = 3.5
24 • (7x/24) = 3.5 • 24
7x = 84
7x/7 = 84/7
X = 12.

The number is 12.
6 0
3 years ago
Read the word problem below.
melamori03 [73]
The answer is: if x represents the number of pencils per box, solve the equation 8x+4=196
5 0
2 years ago
Read 2 more answers
You started this year with $458 saved and
vovangra [49]

Answer:

s = 14m + 458

Step-by-step explanation:

current amount = 458

14 per month

s = 14m + 458

6 0
1 year ago
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If 5r + 6 &lt; 36, then <br> a) r&lt;6<br> b) r&lt;8<br> c) r&lt;12<br> d) r&lt;30<br> e) not given
Irina18 [472]
The answer is r<6

yycjj. hgxs tfdg
4 0
3 years ago
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