Which equation results from adding the equations in this system?

-2 x + y = 8.

5 x-y = - 5.

7x=13

7x=3

3x=3

3x=13

Use a reference angle to write sin (35pi/36) in terms of the sine of a positive acute angle

Let's say you are in Monument Valley and decided to measure the height of a rock formation using the method you learned from the workbook. The distance from your eyes to your finger is 21 inches.

Poppy's pizza sells small, medium and large pizzas. The large round pizza has a diameter of 14 inches. Find the area of a large round pizza

A coffee stand sells cups of coffee for $6 and cups of tea for $3. Tuesday, a total of 75 cups were sold, and the total money collected was $312. How many cups of coffee and how many cups of tea were sold?

What is the Domain and range of 7 times the square root of x minus 9

In a fruit punch drink the 3 ingredients are apple juice orange juice and cranberry juice. If 1/4 of the drink is apple juice and 3/10 is orange juice then write the ratio of cranberry juice to apple juice to orange juice in its simplest form.

If tom has 5 apples, and Mary takes 3 apples. How many apples does Tom have?

The population of Bumpton increased by 10% from 1980 to 1990 and decreased by 10% from 1990 to 2000. What is the net percent change in the population of Bumpton from 1980 to 2000?

Kenny reads 5/8 in 2/3 minutes

A scuba diver was swimming at an elevation of - 8 meters. A shark was swimming at an elevation of - 29 meters. Find the difference between these two elevations.