How do you solve Mental math?

Write an equation of the line passing through (-5 ,4 ) and having slope - 7

If sin x =.42, what is cos

There are 13 pieces of fruit in a bowl and 9 of them are apples. What percentage of the pieces of fruit in the bowl are apples

Does the graph of y=-2 (x+1) (x+3) open up or down?

Which of the following sequences are geometric? A. 3,1, 1/3, 1/9,1/27 B. 1, 6, 36, 216,1,296 C. 2, 8, 18, 46, 120 D. 10, 20, 30, 40, 50

X/6 - 5 = 13 What does "x" equal in this equation?

Find all solutions in the interval [0, 2π). 7 tan^3x - 21 tan x = 0 A) pi/3, 2pi/3, 4pi/3, 5pi/3 B) 0, pi/5, π, 6pi/5 C) 0, pi/3, 2pi/3, π, 4pi/3, 5pi/3 D) 0, pi/3, π, 4pi/3

Which group of numbers is listed from least to greatest? -4, |-2|, |3|, 5, |-7| |-6|, - 4, |-2|, - 1, 0 -8, |-5|, - 4, |3|, 6 -6, |-3|, - 3, 6, |-9|

Solve the equation using the properties of equality. x/4 + 3 = 15

A triangle has two sides mausuring 8.5 cm and 15 CM. What are the least and greatest while number possibilities for the third side?