What number gives a result of -4 when 9 is subtracted from the quotient of the number and 5?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how