Which could be the resulting equation when elimination is used to solve the given system of equations?

5a+5b=25

-5a+5b=35

F a plane slices horizontally through the solid cube, what is the shape of the cross-section?

Use the given information to find the indicated probability. P (A ∪ B) =.7, P (B) =.5, P (A ∩ B) =.3. Find P (A).

Find the interquartile range for the Dara set : 10,3,8,6,9,12,13 A. 12 B. 8 C. 6 D 7

A hiker in Africa discovers a skull that contains 32% of its original amount of C-14. find the age of the skull.

What is the inverse of y=4x-16

1. z^2 = 1 √{ } = √{ } z = ± { } The solutions are { } and { }

What is the rate for 171 And 3

At the start of the summer, you have $603.15 in the bank. You make deposits of $90.89 in June, $106.03 in July, and $70.04 in August. At the end of the summer, how much money do you have in the bank?

A plane traveling from phoenix to san Francisco with a tailwind of 35 miles per hour takes 2.5 hours. returning with the headwind it takes the same plane 2 hours and 45 minutes. what is the average speed of the plane in calm conditions?

Mildred bought 2-cent stamps, 4-cent stamps, and 5-cent stamps for $4.35. The number of 2-cent stamps exceeded the number of 5 cent stamps by 50. The number of 4-cent stamps was 10 less than twice the number of 5-cent stamps.