Find the value of N needed to make the equation shown true

N+19=40

At the sewing store, Whitney bought a bag of mixed buttons. She got 90 buttons in all. 27 of the buttons were large. What percentage of the buttons were large?

The measure of an angle is 2°. What is the measure of a complementary angle?

What is the length of the hypotenuse of a right triangle whose legs have lengths of 5 and 12? a. 13 b. 15 c. 17

Can you guys show me what buttons do I press for 3/4 + 1/6 on a TI-84 calculator?

Evaluate the discriminant for the following equation. Then use it to determine the number of distinct solutions, and tell whether they are rational, irrational, or nonreal complex numbers. 5 x squared plus 11 x plus 6 equals 0

Two planes are 1380 miles apart and traveling toward each other. One plane is traveling 80 mph faster than the other plane. The planes pass each other in 1.5 hours. Find the speed of each plane.

Timani bought a video game console and some game for $350. The video game console cost $200. Each game cost $25. How many games did Timani purchase?

Mr. Bush has a rectangular vegetable garden that is 6 meters and 5 meters wide. What is the area of his garden?

Amanda just took out a loan for $950 at a 7.2% APR, compounded monthly, to buy a new set of tires for her car, and she has agreed to make monthly payments of $38.50 to pay off the loan. If she changes her monthly payment to $93.

What is the solution to the equation 1 over the square root of 8 = 4 (m + 2)