Bridge math !
trigonometry-sine ratio!
i don’t understand how to do this..

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"