In a box of 20 pens, 4 of them are red, 10 are blue and rest are black what percentage of pens are black

Graph the functions and approximate an x-value in which the exponential function surpasses the polynomial function. y = 2x^2 + 7 y = 5^ (x-4)

Express 120 as a product of two numbers, one of which is less than the other

Let a and b be rational numbers, and let b be non-zero. Is a/b rational or irrational?

When 9x2 - 100 is factored, it is equivalent to (3x - b) (3x + b). What is a value for b? (1) 50 (3) 3 (2) 10 (4) 100

A club with seventeen members is to choose three officers: president, vice-president, and secretary-treasurer. Of each office is to be held by one person and no person can hold more than one office, in how many ways can those offices be filled?

The main tank at an aquarium is a cylinder with a diameter of 203 ft and a height of 4 ft. What is its approximate volume? Use 3.14 for π. a) 129,400 ft3 b) 32,366 ft3 c) 79,830 ft3 d) 236,560 ft3

Miranda ran 4 miles how many miles does miranda run in two minutes

Find the square root of 291600 by prime factorization

Shade more than 11/100 and less than 1/4. Write the value of the shaded part as decimal and a fraction

Spence Ferris, a sales representative, drove 4 1/2 hours on the first day of his business trip, 8 3/4 hours on the second day, 6 2/3 hours on the third day, and 5 1/6 hours on the fourth day.