Tiffany read x/3 books last month. Her brother read (4/9x-15) books and her sister read x/9 fewer books than tiffany. express the total number of books read in terms of x. show your work.

The polarizing angle in air for diamond is 67.4°. calculate the critical angle inside the diamond for total internal reflection.

The measurement of an, angle is five times the measurement of it's supplement. what is the measurement of the angle? 30,35,40,45degrees

What is the value of the expression 10 (n-6) when n = 14?46 56 80 134

Pilar wanted to use estimation to solve a decimal addition problem. She correctly used estimation to rewrite the problem as 12 + 3 + 5 + 6. What could her original problem have been?

If u = 5, find the value of t in the equation: t + 12 = u

How many strings can be formed using the letters a, b, c, d, e, f, with each letter used once, that that start with the letter f?

A type of green paint is made by mixing 2 cups of yellow with 3.5 cups of blue. Find a mixture that will make the different shade of green that is More yellow

Simplify by using order of operations: 4 + (9∙2) : (4 - 1) - 4

Which states the following expression: (2 x 3) + (2 x 9) A) the product of two and three and nine B) the sum of two and three and two and nine C) the total of two times three and two times nine D) the product of two times three and two times nine

Five times a number added to - 4, subtracted from twice the sum of eight times the number and 7