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Masja [62]
3 years ago
12

Angle Sum Theorem, thank you so much for the help, in advance! ​

Mathematics
1 answer:
daser333 [38]3 years ago
7 0

Answer:

x=20°, and y is 90° btw

Step-by-step explanation:

This is an iscoceles triangle, since the base angles are equal and the altitude bisects one of the angles. 180 - 110 = 70, meaning the angles are 70 , 70 and 2x. We know that 70 + 70 + 2x = 180 from the angle sum theorem, so 140 + 2x = 180, and 40 = 2x. x = 20°

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In this figure, m∠3 = (2x + 15)° and m∠6 = (3x + 10)°. What value of x makes a∥b? Enter your answer in the box.
Dvinal [7]
For First Question:
As, we find the value  of x for parallel condition of line a and b
so, m∠3 = m∠1 and m∠2 = 180°-m∠1 = 180°-(2x+15)° [ As straight line contain total 180°]
Now,
m∠2 = <span>m∠6 [ Because they are corresponding angles]
180</span>-(2x+15)=(3x+10)
180=3x+10+2x+15
x= 31 satisfies the condition of a||b

For second Question:
As, it is issoceles triangle So side AC = side BC So, m∠A=<span>m∠B
</span>4x+5=5x-1
x=6
So,
m∠A=29° and triangle contain total 180° 
<span>m∠C=180-29-29
</span>       =122°
Option D is correct

8 0
4 years ago
What is a percent? Doesn't it mean a fraction out of 100?
PIT_PIT [208]

<span>We use the symbol %<span> for "percent."</span></span>

<span>The word "percent" really just means "per hundred.</span>

3 0
4 years ago
Read 2 more answers
a light in a lighthouse rotates 45° &amp; pauses, it rotates &amp; pauses again. the light moves a total of 95° during the 2 rot
Verdich [7]
47.5 cause in the two total rotations, it was 95 so you would divided 95 by two and get 47.5.
5 0
4 years ago
Read 2 more answers
Solve the inequality. 3p+7&lt;31
Alexandra [31]

Answer:

p < 8

Step-by-step explanation:

3p+7<31

Subtract 7 from each side

3p+7-7<31-7

3p <24

Divide each side by 3

3p/3 <24/3

p < 8

6 0
3 years ago
3. If mZEFH = (5x + 1), mZHFG = 62°, and<br> mZEFG = (18x + 11), find each measure.
arsen [322]

Answer/Step-by-step explanation:

Given:

m<EFH = (5x + 1)°

m<HFG = 62°

m<EFG = (18x + 11)°

Required:

1. Value of x

2. m<EFH

3. m<EFG

SOLUTION:

1. Value of x

m<EFH + m<HFG = m<EFG (angle addition postulate)

(5x + 1) + 62 = (18x + 11)

Solve for x using this equation

5x + 1 + 62 = 18x + 11

5x + 63 = 18x + 11

Subtract 18x from both sides

5x + 63 - 18x = 18x + 11 - 18x

-13x + 63 = 11

Subtract 63 from both sides

-13x + 63 - 63 = 11 - 63

-13x = -52

Divide both sides by -13

-13x/-13 = -52/-13

x = 4

2. m<EFH = 5x + 1

Plug in the value of x

m<EFH = 5(4) + 1 = 20 + 1 = 21°

3. m<EFG = 18x + 11

m<EFG = 18(4) + 11 = 72 + 11 = 83°

8 0
4 years ago
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