Margarita traces a circle with a radius of 20 centimeters like the one shown below. She will color in the shaded region. What is the area of the shaded region?​

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

1. which of the following algebraic equations is equivalent to ? x^n = a a^n = x a^x = n x^a = n 2. 16^1/4= 1/2 2 4 3. (-36)^1/2= -6 1/6 no real number 4. 8^2/3= 4 8 16√2 )^5/2= 7,776 1/7,776 no real number 6. m ^ the square root of a^2m simplified is: 7. the square root of 3^3 times the square root of 2 simplified and in radical form is:

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply