∠1and ∠2 are a linear pair, and ∠2 and ∠3 are vertical angles. m∠1=(3y+10)∘ and m∠3=(5y−30)∘. What is m∠2?

Step-by-step explanation:

It is given that ∠1 and ∠2 are a linear pair. So, there sum is 180 degrees.

   ...(1)

∠2 and ∠3 are vertical angles. So, both are equal.

    ...(2)

From (1) and (2), we get

Substitute and in the above equation.

Divide both sides by 8.

The value of y is 25.

Using equation (2), we get

Substitute y=25.

Therefore, .

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

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step-by-step explanation: