You have quarters and dimes. altogether you have 42 coins with a total value of $7.65. how many of each do you have? write a system of equations and solve.

Jorge planted flowers in his garden. He planted one row of 12 tulips and one row of 36 daisies. What is the ratios of tulips to daisies that jorge planted? Express the ratio as a fraction and as a decimal

A company observes the lifespan of 560 lightbulbs and finds that their data follows a normal distribution. what is the approximate number of light bulbs that fall within two standard deviations from the mean?

15 can be written as

Drug x, a drug that claims to treat male pattern scalp hair loss, was administered for 12 months to over 1800 men aged 18 to 41 with mild to moderate amounts of ongoing hair loss.

Assume that the committee consists of 6 Republicans and 8 Democrats. A subcommittee consisting of 7 people is to be selected.

The average adult house needs 2/5 bale of hay each day to meet dietary requirements. A horse farm has 44 bales of hay. How many horses can ne fed in one day with 44 bales of hay.

Write a recursive definition for the set of odd positive integers.

Solve x2 + 10x + 12 = 36 for x. x = â12 or x = 2 x = â11 or x = 1 x = â2 or x = 12 x = â1 or x = 11

Y varies directly as x and y is 12 when x is 2. Find y when x is 11.

What is the base of the exponential function f (x) = 0.5x-2?