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3 years ago

Find the value of x plz plz plz

Mathematics

2 answers:

eduard3 years ago

6 0

Answer:

Step-by-step explanation:

A triangle always has 180° so that means 40° (2x+9)° and another angle add up to 180°.

We can find out two angles in order to find out the third, one of them is 40° the other is 180°-105° because there are 180° on a line.

you get 75.

75°+40°=115°

180°-115°=65°

2x+9=65°

Make x the subject of the formula:

2x=56

(take away 9)

x=28

(divide both sides by 2)

Wewaii [24]3 years ago

4 0

Answer:

X=28

Step-by-step explanation:

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