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julia-pushkina [17]
3 years ago
8

Please explain how to do this!!

Mathematics
1 answer:
Tatiana [17]3 years ago
6 0

9514 1404 393

Answer:

  y = 55°

Step-by-step explanation:

You know the sum of angles in a triangle is 180°. So, ...

  25° +30° +x = 180°

And, you know a linear pair of angles totals 180°:

  x + y = 180°

Substituting for 180°, we have ...

  25° +30° +x = x + y

Subtracting x from both sides, we get a relation that is useful to remember:

  25° +30° = y

  y = 55°

_____

This relation is usually described as ...

  An exterior angle is equal to the sum of the remote interior angles.

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ZA and ZB are supplementary angles. If m_A
KatRina [158]

Answer:

∠A = 107

∠B = 73

Step-by-step explanation:

∠A ,  ∠B are supplementary. So, ∠A + ∠B = 180

5x + 27 + 5x - 7 = 180

5x + 5x  + 27 - 7 = 180       {Combine like terms}

             10x + 20=180

                    10x = 180 -20

                   10x = 160

                      x = 160/10

x = 16

∠A = 5x + 27 = 5*16 + 27 = 80 + 27 = 107

∠B = 5x - 7 = 5*16 - 7 = 80 - 7 = 73

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3 years ago
In ABC segment DC bisects /_C and divides AB into segment AD and BD. CD = 6 units and AC = 8.5, then which statement would
eduard

Answer:

ABC=BCD wtdf

Step-by-step explanation:

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3 years ago
Four sets of data are shown in box-and-whisker plots. Which set has the largest 3rd Quartile value?
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I think that is A.

Step-by-step explanation:

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3 years ago
Which fraction can be replaced with 0 when estimating with fractions?
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3 years ago
Read 2 more answers
QUESTION 1<br> What is the mean of 21, 23, 35, 40)?<br> o A. 27<br> B. 31.75<br> e C. 19<br> D.29.75
tangare [24]

Answer:

D. 29.75

Step-by-step explanation:

To determine the mean, you must add up all the numbers and then divide that number by how many numbers you added.

Here,

21 + 23 + 35 + 40

= 119

You added 4 numbers (21, 23, 35, 40),

so, 119 / 4

= 29.75

Hope this helps and a thank won't hurt! :)

3 0
3 years ago
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