Roxanne has $20 and she wants to buy some shirts. she picks one shirt that costs $10.99 and two shirts that cost $4.99 each.

which statement best describes if an exact total or an approximate total should be calculated?

a.
roxanne must add the exact cost of the three shirts so she will know if she has enough money to buy the third shirt.

b.
roxanne can round the prices of the shirts to the nearest dollar and then add to estimate if she has enough money.

Asphere has a diameter of 10 in. what is the volume of the sphere?

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.