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Lelu [443]
3 years ago
8

Find the value of a from given figure.​

Mathematics
1 answer:
NeX [460]3 years ago
7 0

Answer:

45°

Step-by-step explanation:

three angles in a triangle sum up to 180

90° + a + a = 180°

90° + 2a = 180°

2a = 180°-90°

2a = 90°

a = 45°

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Answer:

(2,7) is not a solution to the given system of equations.

Step-by-step explanation:

Given system of equation is:

2x + 3 = y

2x + y = 15

To check whether (2,7) is solution to this system or not, we will put x=2 and y=7 in both equations.

Putting x=2 and y=7 in Eqn 1

2(2) + 3 = 7

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Thus the ordered pair satisfies the equation

Putting x=2 and y=7 in Eqn 2

2(2) + 7 = 15

4 + 7 = 15

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The ordered pair do not satisfy the second equation.

Hence,

(2,7) is not a solution to the given system of equations.

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Step-by-step explanation:

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