Prove that for any arithmetic sequence a7+a10=a8+a9

What is the solution of |X - 1| = 5x + 10

The perimeter of an equilateral triangle is 6n - 15. Write an expression to represent the length of each side.

Which one of the following statements expresses a true proportion? A. 2 : 3 = 3 : 2 B. 42 : 7 = 6 : 2 C. 14 : 6 = 28 : 18 D. 3 : 5 = 12 : 20

In the morning, a farm worker packed 3 pints of strawberries every 7 minutes. In the afternoon, she packed 2 pints of strawberries every 5 minutes. What was the difference between her morning and afternoon packing rates?

What is the answer to 132.55=5 (0.04m+21.70+0.10 (21.70))

The distance a spring stretches varies directly as the amount of weight that is hanging on it. A weight of 2.5 pounds stretches a spring 18 inches. Find the stretch of the spring when a weight of 6.4 pounds is hanging on it.

jack wanted to buy fortnite but he only had 5/6 of the money. the actual price was $80.00 and was 20% off. he wanted to buy another video game that cost $50.50 dollars. how much money does he still need in order to buy both games?

Information about the students at Jackson High School is shown in the table. A 4-column table has 4 rows. The first column has entries tenth grade, eleventh grade, twelfth grade, total.

A researcher is trying to determine the January temperature in regions of the United States using the degrees of latitude. After collecting data, she creates a scatterplot.

What is the GCF of 45,85and90