Explain this story problem. There are 20 students in each class. There are 4 of the classes. How many students are there?

Express 0.006 in scientific notation

Product of 2.2 and 5.00 using correct sig figs

Jan studied this system of equations: {2x + 4y = 6 and x - 2y = 6. He found that another system of equations had the same solution: {4x + 8y = 12 and x-2y = 6.

What would have a greater mass 4 kilograms or 4100 grams

Which quadrilateral does NOT have two pairs of parallel sides? A. A parallelogram B. A rectangle C. A Rhombus D. A Trapezoid

H (x) = 2x+2; find h (-8)

Estimate the answer to 943.18 + 103.89 by first rounding each number to the nearest ten.

find the diameter and circumfrance of a circle with a radius of 5 yards leave your answers in terms of pi

Suppose that F (x) = x2 and G (x) = 2x2 - 5. Which statement best compares the graph of G (X) with the graph of F (x) ? O A. The graph of G (x) is the graph of F (x) stretched vertically and shifted 5 units to the right. O B.

Lisa purchased almonds for $3.55 per pound. She spent a total of $14.86. How many pounds of almonds did she purchase? (Round your answer to the nearest hundredths place)