Prove that for any natural value of n the value of the expression:

(5n+1) ^2 - (2n-1) ^2 is divisible by 7

Strawberries cause two hours per pound Kate buys 5 pounds he gets 20% off discount on the total cost how much does Kate pay for the strawberries

Frank owns 250 acres of land. If he divides the land into 1/3 acre plots, how many plots will he have? 83 84 750 751

You have a combination lock that has the numbers 1-40 on the dial. You forgot the combination, but you remember that the combination is three numbers, the last digit of all three numbers is 6, and none of the numbers are between 1-10.

A landscaper buys a tree that grows at a rate of 18 inches every 3 months. How much does it grow in 1 year? A. 30 in. B. 36 in. C. 54 in. D. 72 in. A plant grows 9 in. every 2 months. How will it grow in a year? A. 18 in. B. 36 in. C. 54 in. D.

Mark is comparing prices of different brands before he goes shopping. Who has the best deal on ice cream ? Brand Size & Price Turkey Hill $4.50 for 30 ounces Breyers $15.36 for 128 ounces Ben & Jerrys $2.88 for 16 ounces

Why a mixed number is called "mixed" number what is mixed up here? Because a whole number such as 1 or two is "mixed" with a fraction such as 1/2, 1/4, or 3/8ths. Because numbers are all mixed up. Because a fraction is added to a whole number.

Factor q^3-125 completely.

Freida earns $5.85s per hour. to find the amount of money freida earns working x hours, use the equation y=5.85. how many dollars does Freida earn of she works 2.4 hours?

Determine the mean, median, mode, and midrange for this collection of class test scores: 88 82 97 76 79 92 65 84 79 90 75 82 78 77 93 88 95 73 69 89 93 78 60 95 88 72 80 94 88 74 a. Mean is 84, median is 82, mode is 82, midrange is 77 b.

In a cohort of thirty graduating students, there are three different prizes to be awarded. if no student can receive more than one prize, in how many different ways could the prizes be awarded?