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Annette [7]
4 years ago
12

Pleeeeeeeaaaseee help. I need to find the exterior angle measurement. I will mark brainliest

Mathematics
1 answer:
Mariana [72]4 years ago
5 0

Answer:

2a = 108

Step-by-step explanation:

the 3 angles of the triangle add to 180

lets call the unknown angle  in the triangle y

a+10 + y + 44 = 180


we also know that 2a+ y = 180 because it makes a straight line

solve this for y by subtracting 2a from each side

2a +y = 180

y = 180 -2a

now we can substitute this into the triangle equation

a+10 + y + 44 = 180

a+10 + 180 -2a + 44 = 180

combine like terms

-a +234 = 180

subtract 234 from each side

-a = --54

divide each side by -1

a =54

the exterior angle is 2a

2* 54

108


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likoan [24]
I think it’s an regular because it looks like an rectangle
8 0
3 years ago
Please help ill give brainliest
Sveta_85 [38]

Answer:

\sf A . \sf \frac{3}{-7}

\sf E. \sf -( \frac{-3}{-7} )

This above options makes the expression true.

  • The negatives above can be distributed up as well, which happened in A.
  • In E, when the negatives inside the bracket cancels out, the negative outside the brackets multiplies and makes the expression true.
  • In B the expression turns positive, thus false same happens with C and D
3 0
3 years ago
The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population standard deviati
garik1379 [7]

Answer:

Their welders earn $50,000 annually.

Step-by-step explanation:

Given : \mu = 50,000

           \sigma = 2000

           n = 100

          \bar{x}=50350

To Find : The ship building association wishes to find out whether their welders earn more or less than $50,000 annually.

Solution :

H_0:\mu = 50000\\H_a: \mu \neq 50000

n = 100

Since n > 30

So we will use z test

z= \frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

Substitute the values

z= \frac{50350-50000}{\frac{2000}{\sqrt{100}}}

z=1.75

Refer the z table for p value

p value = 0.9599

α= 0.05

Since p value > α

So we accept the null hypothesis .

Hence  their welders earn $50,000 annually.

4 0
3 years ago
Find the value of x.<br> A) 21 <br> B) 27 <br> C) 31 <br> D) 34
Ivahew [28]

The 2 angles given are vertical angles, which mean they are the same.

So we have: 3x +1 = 64


Subtract 1 from each side:

3x = 63

Divide both sides by 3:

X = 63 / 3

X = 21


The answer is A.

7 0
3 years ago
Read 2 more answers
How can you create a rational number ?
trasher [3.6K]
-- Write a fraction with whole numbers on top and bottom.
or
-- Write down any number, using only digits ... and a fraction bar or decimal point if you need them. If you write down the complete number, it's rational.
8 0
3 years ago
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