Given that the measure of ? x is 60°, and the measure of ? y is 90°, find the measure of ? z

The measure of angle z is 30

Step-by-step explanation:

The angles of a triangle all add up to 180. So we can set these measures equal to 180 and solve for the unknown.

60 + 90 + z = 180

150 + z = 180

z = 30

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step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b