What is the area of a circle with a radius of 4cm

Mrs. Chen wants to purchase sets of Christmas lights to decorate her house. The lights cost $13 dollars per package. She has saved $360 for the project.

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Roberto decided to get rid of all of his baseball cards, so he gave his four friends 32 baseball cards each.

Michelle bought 72 pounds of cocoa powder for her backery everyday she used the same amount of cocoa powder to make bakery items after 10 days Michelle was left with 20.

Find the area of a circle with radius, r = 6.87m. Give your answer rounded to 2 DP.

Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution? y=x-1 y=1/2x+1 A. (-4,-3) B. (4,3) C. (2,1) D. (-2,0)

Find the discriminant. u2-2u-5=0

How many corners does a cube have? how many faces does a cube have? how many other cubes would share a given corner atom or face atom if several cubes were stacked side-to-side, front-to-back, and top-to-bottom?

What is the difference between - 4x - 6 and 2x + 4? Show work.

Solve the quadratic equation by factoring. check your solutions in the original equation. (enter your answers as a comma-separated list.) 2x2 = 19x + 33

A culture started with 3000 bacteria. After 4 hours, it grew to 3,600 bacteria. Predict how many bacteria will be present after 10 hours. Round your answer to the nearest whole number.