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laiz [17]
3 years ago
6

A triangle has one measuring 3x degree. A second angle measures 2x + 20 degrees and the third angle measure 4x - 20 degrees. Wha

t is the value of x.
Mathematics
1 answer:
Bingel [31]3 years ago
3 0

Answer:

A triangle is a total of 180 degrees

So to find what x equals we are going to add up all the degree measurements and make them equal to 180

3x+2x+20+4x-20=180 (combine any like terms on the left)

3x+2x+4x+20-20=180 (3x+2x+4x=9x, 20-20=0)

9x=180 (divide both sides by 9)

x=20

Hope this helps ;)

Step-by-step explanation:

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a parallelogram has one angle that measures 40. what are the measures of the other three angles in the parallelogram?
KonstantinChe [14]
Since one side is 40°, you subtract that from 180.

180° - 40°= 140°.

So therefore your missing side lengths are 140, 40, and 140.

hopefully this helps





6 0
3 years ago
Read 2 more answers
Percy solved the equation x2 + 7x + 12 = 12. His work is shown below. Is Percy correct? Explain.
antoniya [11.8K]
= > x² + 7x + 12 = 12

= > x² + ( 4 + 3 )x + 12 = 12

= > x² + 4x + 3x + 12 = 12

= > x( x + 4 ) + 3( x + 4 ) = 12

= > ( x + 4 ) ( x + 3 ) = 12


Percy did correct till this step. But by doing like this, Percy can't get the values of the variable x.



Percy should follow the following steps :

= > x² + 7x + 12 = 12


Add -12 on both sides,


= > x² + 7x + 12 - 12 = 12 - 12

= > x² + 7x = 0

= > x( x + 7 ) = 0

= > ( x = 0 ) or ( x + 7 = 0 )

= > ( x = 0 ) or ( x = - 7 )



Hence, required value(s) of x is 0 or -7
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8 0
3 years ago
Read 2 more answers
What equation do you obtain when you solve the formula A = 1/2bh for h?ASAP PLEASE
Katen [24]

Answer:

2Ab=h

Step-by-step explanation:

A=1/2bh

2A=bh

2Ab=h

8 0
3 years ago
A sphere has a diameter of 14 ft. Which equation finds the volume of the sphere? V = four-thirds (7) cubed V = four-thirds pi (7
lidiya [134]

Answer:

V=4/3*πr^2 is the same as V=four-thirds pi &(7) cubed

Step-by-step explanation:

8 0
3 years ago
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Answer this soon pls! ​
labwork [276]

Answer:

2

Step-by-step explanation:

5 0
3 years ago
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