The number 21 is decreased to 15. What is the percentage by which the number was decreased, to the nearest tenth of a percent?

F (x) = x3 + 4x2 + x - 6 real zeros

Is 12/20 equivalent to 60%?

9d + 6 = 51 the solution is d=

Hilary spent $2.99 on stickers. Each sticker cost $0.23. How many stickers did she buy

Premises: If a triangle has an angle with a measure more than 90°, then the triangle is an obtuse triangle. The measure of an angle in △ABC is 110°. Conclusion: △ABC is an obtuse triangle. Is this law of syllogism or law of detachment?

Factor the expression 5x^2-18x+9

Ac=3 (x-6) and BD=x+6

Tony has 50 miles to his destination after 21 minutes of driving and he has 40.4 miles to his destruction after 33 minutes of driving. How many miles will he have to his destination after 37 minutes of driving?

Describe a situation in which there would be a positive association between two variables.

One angle of a triangle measures 34. A second angle measures 81. What is the measure of the third angle of the triangle? A: 65 B: 99 C: 115 D: 146