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otez555 [7]
3 years ago
12

What is the value of y? Enter your answer in the box

Mathematics
2 answers:
melomori [17]3 years ago
7 0
ANSWER

The value of y is
5

EXPLANATION

The given triangle is isosceles.

The base angles are 75° each.

The sum of the interior angles must be 180°

This implies that,

4y + 10 + 75 + 75 =180 \degree

We simplify to get,

4y + 160 = 180

We group like terms to get,

4y = 180 - 160
This will give us,

4y = 20

We divide through by 4 to get,

y = 5

igor_vitrenko [27]3 years ago
5 0

Answer:

The value of Y is 5.

Step-by-step explanation:

I am assuming you're asking of this particular question?

If so, start out by creating a theory that if both sides of the triangle are marked as "equal" with one mark, then both angles of B and C should be equal as well. So, in other words, <em>75</em> = <em>(3x)</em>. Or, in more simpler terms, 75 = 75.

With that in mind, we'll now add all angles to equal 180 since this shape is a triangle. 75 + 75 + (4y+10) = 180.

Add similar terms, 150 + (4y+10) = 180.

Subtract 150 from both sides; (4y+10) = 30.

Subtraction Property of Equality (Subtract 10 from both sides); 4y = 20.

Finally, divide both sides by 4. Y = 5.

    <em>I hope this helped</em>~♥

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