What is the value of x in the solution to the system of equations below?

15x-12y=13

30x+9y=4

A. 1/6

B.-2/3

C.-17/3

D. 1/3

Over 6 days, Dan jogged 7.5 miles, 6 miles, 3 miles, 3 miles, 5.5 miles and 5 miles what is the mean distance that Dan jogged each day

We know that a token costs $1.75. If you purchase 10 tokens, you get 2 free tokens. Write and solve an equation to find the approximate reduced price of each token.

What is the area under the normal curve between z-scores of 2.39 and 2.76

What is square feet of triangle with 3 base and 2 height

Ann and betty together have $60. Ann has 9 more than twice bettys amount. How much money does each have together

Extracting the square root. (4x+7) ^2=60

The range for a list of measurements equals the greatest measurement minus the least measurement. The two lists of measurements, X and Y, combined consist of 30 measurements with a range of 25. What is the range for the measurements in list X?

Average of 6 numbers is 4, if the average of 2 numbers is 2 what is the average of other 4

A farmer has 25 yards of fencing to make a pig pen. He is going to use the side of the barn as one of the sides of the fence, so he only needs to fence 3 sides. What should be the dimensions of the fence in order to maximize the area?

If f (x) = x^2+1 and g (x) = x-4 which value is equivalent to (f•g) (10)