What is the percentage decrease of 3 hours to 1/2 hours

Im new at this kind of math

1) Triangle ABC is a similar to triangle QRS by the AA Similarity Postulate Also, m∠A=32° and m∠S=102° what is m∠B? 2) Triangle ABC is similar to triangle XYZ by the AA Similarity Postulate. Also m∠A=39° and m∠C=24°. What is m∠Y?

Find all real solutions of the quadratic equation. If there is no solution, state no solution. 3x^2 + 6x-5 = 0

Draw a model to write 2 2/5 as an improper fraction

Solve and simplify, typing the final answer as a fraction 1/4 : 3/8

For this function, the average rate of change __ as x increases.

Solve y=-x+2 and y=-2x-1 as a graph, substitution, or elimination?

Complete rate table for spaghetti ingredients 12 ounces of spaghetti sauce need 16 ounces of tomato's what does 1 oz sauce equal to tomatoes

Find the height of a triangle with an area (a) of 35 square inches and base (b) of 7 inches. Use the formula for the area of a triangle, a = 1/2bh

A survey of 50 people found that 14 people like building a snowman. If 600 people had responded, how many would have been expected to list building a snowman as their favorite winter activity? theoretical or experimental probability, and why

What is leaner equation