Solve the quadratic by quadratic formula below

a^2-4a=21

Which expression is equivalent to 4.8+2.2w-1.4w+2.4? A. 0.4 (6+2w) B. 0.8 (9+w) C. 1.6 (3+2w) D. 3.6 (2+w)

The weekly pay for working a job is given by the function P (h) = 15h, where "h" is the number of hours worked. The company restricts workers to a maximum of 40 hours per week. The tax on the pay is given by the function T (P) = 0.

A comic book cost 3.99 it is marked up to 45% what is the final prices of the comic book after it is marked up? A.$1.80 B.$4.44 C.$5.79 D.$6.15

Cet artswer. Which Institute would you attend if you wanted to enter a graduate program in math?

If sin (Ф) = 3/5, and cos (Ф) = -4/5, which of the following is true? a.) sin ((π/2) - Ф) = 4/5 b.) cos ((π/2) - Ф) = -3/5

What do you call it when a doctor works on a patient while reciting a poetry

Is square root of every non square number always irrational? find the smallest natural number which divides 2205 to make its square root a rational number.

Tony plans to save 20 nickels each week from his allowance. A nickel weighs 5 grams. How many kilograms of nickels will Tony save in 10 weeks

412 students were surveyed about their preferences of sports. 115 students like football, 100 students like baseball, and 45 students like both sports. how many students like exactly one of the two sports?

Find the missing number in this problem Make sure your answer is fully reduced. 3/4 - 1/2 equals X