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ElenaW [278]
3 years ago
6

Find the value of x. The angle measures of a right triangle are 30°2x°3x°​

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
4 0

Answer:

x=30

Step-by-step explanation:

all interior angles in a triangle must equal 180 degrees

2x+30+90=180

2x+120=180

2x=60

x=30

you can check by substituting 30:

2(30)+30+90

60+30+90=180

another way to do this:

3x is an exterior angle

however it is a supplementary one as well

that means tht

3x+90=180

3x=90

x=30

you get the same answer either way

HOPE THIS HELPS!

Radda [10]3 years ago
3 0

Answer:

30

Step-by-step explanation:

Exterior angle equals sum of opposite interior angles

3x = 2x + 30

3x - 2x = 30

x = 30

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the sum of the digits of two digit number is 10. when 18 is added to the number is digit reversed find and number​
Contact [7]

Answer:

<em>The number is 46</em>

Step-by-step explanation:

<u>Equations</u>

Suppose:

a = One digit of the number

b = Tens digit of the number

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a + b = 10

The number expressed as two-digits quantity is ab, and its value is

10a+b

When we add 18 to that number, we have:

10a+b+18

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10a+b+18=10b+a

Simplifying:

9a+18=9b

Dividing by 9:

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Substituting in the first equation:

a + a + 2 = 10

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Thus the number is 46

4 0
3 years ago
How do you find out if 5/4 is greater or less than 7/4
castortr0y [4]

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8 0
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Read 2 more answers
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