If a green light blinks every 4 seconds and a yellow light blinks every 5 seconds. When will both lights blink at the same time?

Prove that 2sec^2x-2sec^2xsinx-sin^2x-cos^2x=1.

What is a parabola?

Explain what a variable is

Adam plans to choose a video game from a section of the store where everything is 75%75% off. he writes the expression d-0.75dd-0.75d to find the sale price of the game if the original price is dd dollars. rena correctly writes another expression, 0.

In a college there are 16 times as many students as professors. if together the students and professors number 17000, how many students are there in the college?

In order to make a teaspoon of honey, a honeybee must make 154 trips. If a honeybee made 924 trips, how many teaspoons of honey could it make?

Find $5,875 : $6,030 rounded to the nearest tenth of a percent.

0.85 is 10 times as much as? and 1/10 of?

Which percent is equivalent to? 2 5/8

Round 76,902 to the nearest one thousand