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garri49 [273]
3 years ago
10

What is m∠A ? Enter your answer in the box.

Mathematics
2 answers:
34kurt3 years ago
6 0

Answer:

m\angle A=115\degree

Step-by-step explanation:

The sum of angles in a triangle is 180 degrees.

\implies (x-35)\degree+x+(3x-35)\degree=180\degree

\implies 5x-70\degree=180\degree

\implies 5x=180+70

\implies 5x=250

Divide both sides by 5.

\implies x=50

We substitute the value of angle A to obtain:

m\angle A=3(50)-35

m\angle A=115\degree

miss Akunina [59]3 years ago
5 0

Answer:

The measure of angle A is 115°

Step-by-step explanation:

we know that

The sum of the internal angles of a triangle must be equal to 180 degrees

so

∠C+∠A+∠B=180°

substitute values and solve for x

x°+(3x-35)°+(x-35)°=180°

5x°=180°+70°

x=250°/5=50°

Find the measure of angle A

∠A=(3x-35)°

substitute the value of x

∠A=(3(50)-35)=115°

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Read 2 more answers
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