Jennifer had a total of 20 coins consisting of nickels and quarters. If the value of the coins was $1.80, how many quarters did she have?

Solve x2 9x 20 = 0. x = 2, x = 10 x = - 2, x = - 10 x = - 5, x = - 4 x = 5, x = 4

The mean life of a Brand Q car battery is 36 months. The standard deviation is 4 months. 68% of all batteries will have a life between months and months.

Each of the 6 cats in a pet store was weighed. Here are their weights (in pounds) : 13, 7, 14, 6, 7, 11 Find the median and mean weights of these cats. If necessary, round your answers to the nearest tenth.

Find an identity for cos (4t) in terms of cos (t). I have used 2cos^2 (2t) - 1 but I need to rewrite that in terms of cos (2t).

the temperature at dawn was - 2°F during the day the temperature increased 15 degrees and then dropped 10 degrees in the evening

Mark is draining his pool to clean it. At 12:00 P. M., he started to drain the pool. At 4:00 P. M., the pool had 11,600 gallons of water. At 7:00 P. M., the pool had 6,800 gallons of water.

What is the first, fourth, and tenth terms of arithmetic described by the given rule a (n) = 1 (n-1) (-4.1)

There are 32 desks in a room. If x represents the number of rows of desks, which expression would equal the number of desks in each row?

Sam and dave each solve the problem at the right. sam says the sum is 4 feet 18 inches. dave says the sum is 5 feet 6 inches. who anser make sense

What would happen if people decided not to pay taxes?