Because both lines DE and XY are parallel to one another, the 115° will be same for the line segment. XY

And because XY is a flat line, it's a straight angle. Meaning it's an 180° angle.

We need to find a value of x that when added 115° will equal 180°.

We can use this equation: x + 115 = 180

Subtract both sides 115.

x + 115 - 115 = 180 - 115
x = 65

So, x is equal to 65 degrees.

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3 years ago

A sample of 500 part-time students revealed that their annual incomes were normally distributed with a mean income of $30,000 an

e-lub [12.9K]

Answer:

341 students

Step-by-step explanation:

Here, we are to calculate the number of students earning between a particular range of income.

Please check attachment for complete solution and step by step explanation