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Sonbull [250]
3 years ago
12

The measure of an angle is 83°. What is the measure of its complementary angle?

Mathematics
2 answers:
andrey2020 [161]3 years ago
8 0
7 degrees because complementary angles are 90 degrees and when u subtract 90-83= 7.
laiz [17]3 years ago
4 0

Hello! Your answer is 7 degrees.

A set of complementary angles are ones which, when their measurements are added, will equal up to 90 degrees. For example, the complementary angle of a 80 degree angle would be 10 degrees. A supplementary angle also falls in the same category, however it is adding up to 180 degrees. The way I remember which one is which is that <u>c comes first in the alphabet, and 90 degrees comes before 180 degrees.</u>

Applying that knowledge, 83 plus the complementary angle must equal 90. 83 + 7 = 90, therefore, the complementary angle measures 7 degrees.

Hope this helps!

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Answer:

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7 0
3 years ago
Read 2 more answers
You have a list of 1,000 random, normally distributed numbers with a mean of 20 and a standard deviation of 3. Which statement i
Ludmilka [50]
You're going to have to work out the z-scores of both values in each option and see if it makes sense.

n = m + sz

The mean is 20 and the standard deviation is 3.

So let's find try the z-scores of the outer range values and determine their probabilities:

from 14-20:

n = m + sz
20 = 20 + 3z and 14 = 20 + 3z
0 = 3z and -6 = 3z
z = 0 and z = -2

So now using a z-score table, such as the one below, find the probabilities.

z = 0 is easy, it's 0.5
z = -2 is 0.02275

Subtract the smaller from the larger to get the probability of getting in the range:

0.5 - 0.02275 = 0.47725 (so times 1000, you get 477.25, which is not about 340, so this option is wrong)
---
Now trying option 2, from 17-29:

n = m + sz
29 = 20 + 3z and 17 = 20 + 3z
9 = 3z and -3 = 3z
z = 3 and z = -1

0.99865 - 0.158655 = 0.839995 (not 680, so not the answer)
---
Now trying option 3, from 20-23:

n = m + sz
23 = 20 + 3z and 20 = 20 + 3z
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8 0
3 years ago
841 divided n =29 find n
gogolik [260]
841/n = 29
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5 0
3 years ago
Read 2 more answers
2/3(9a+18b)=6a+kb
bagirrra123 [75]

Answer:

4.) 12

Step-by-step explanation:

\frac{2}{3} (9a + 18b) = 6a + kb \\  \\  \implies \:  \frac{2}{3}  \times 9a +  \frac{2}{3}  \times 18b = 6a + kb \\  \\  \implies \: { 6a} + 12b = 6a + kb \\  \\  \implies \:  \cancel{ 6a} + 12b -  \cancel{ 6a} = kb \\  \\  \implies \:  12b = kb \\  \\ \implies \: k =  \frac{12\cancel b}{\cancel b}  \\  \\ \huge \implies \: k = 12

8 0
2 years ago
The volume of a cylinder is 54pi. If the radius is 3cm, what is the height of the cylinder?
MatroZZZ [7]

Answer:

6 cm

Step-by-step explanation:

Hello!

The formula for the volume of a cylinder is: V = \pi r^2h

  • r = radius
  • h = height

Solve for h, given volume is 54π, and radius is 3:

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We can check:

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  • V = 54\pi

Correct! The height is 6 cm.

7 0
2 years ago
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