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Ulleksa [173]
3 years ago
7

Find the value of y.

Mathematics
1 answer:
Alexandra [31]3 years ago
3 0

Answer. First option: -1

Solution:

We have a triangle, and we know two angles of 60° each one. We can find the third angle A, using:

A+B+C=180°, with B=60° and C=60°:

A+60°+60°=180°

Solving for A: Adding similar terms:

A+120°=180°

Subtracting 120° both sides of the equation:

A+120°-120°=180°-120°

A=60°

The third angle A is 60° too, then the triangle has three equal angles of 60° each one, and it is an equillateral triangle, thus its three sides must be congruents:

2y+6=4=2x-3

We need to find the value of y, then using the first equality:

2y+6=4

Solving for y: Subtracting 6 both sides of the equation:

2y+6-6=4-6

2y=-2

Diniding both sides of the equation by 2:

2y/2=-2/2

y=-1

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Step-by-step explanation:

y = ax + b

I see already the result (y = x/10 × 1/6), but let's go in formally.

we have multiple function points to use to officially calculate a and b.

1/6 = a×10 + b

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let's e.g subtract equation 1 from equation 3.

4/6 = a×40 + 0

a = 4/40 / 6 = 4 / 240 = 1/60

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1/6 = 1/6 + b

b = 0

so, the function is

y = x/60

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3 years ago
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Step-by-step explanation:

It would be

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PLEASE HELP!!! The question is below the graph.​
IrinaVladis [17]

Answer:

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