Explain what is the surface area of a cube with faces that each have an area of 14 cm2?
a.
56 cm2
b.
84 cm2
c.
112 cm2
d.
196 cm2

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.