use the substitution method to solve the system of equations. choose the correct ordered pairs x+y=5 y=7 A. (12,7) B. (-12,7) C. (-2,7) D. (2,7)

Jan enters a room that is 20 foot by 30 foot rectangular room. The long sides face north and south ... She enters the exact center of the room and walked 10 feet north. Then she walked 8 feet east. How far is she from the east side of the room?

Tell whether the number is prime or composite 68

Rudolpho takes 12 minutes to run 6 times around a 400-meter track. Assuming he runs at a constant speed, how long does he take to run 1 kilometer?

90+31+121+5+67=? what the answer

What is the 5th term of this sequence? a1 = - 3, an = - 2a n-1

The owner of a video store has determined that the profits "P" of the store are approximately given by P (x) = - x^ (2) + 30x+76, where x is the number of videos rented daily.

Harold stores 10,656 pounds of grain for his 24 cattle. Each cow eats about 12 poinds of grain each day. How many days would the food supply last?

What is 91.80 divided by 4?

How do i figure out 3/4 of 640 fraction

How do you apply distributive property to a problem to make a new equation?