Eight white balls and twenty black balls are in a bag. What is the probability of drawing a black ball in one draw?

2/5

5/7

1

X - 3y = 0 and 3x + y = 7

An article claims that teenagers on average will check their cellphones 150 times in one day. A student decides to test this claim using the hypotheses H0: μ = 150 vs. Ha: μ ≠ 150. A 95% confidence interval for the true mean is found to be (154.

Convert the decimal expansion 0.1777 into a rational number.

What is 4 over 10 in decmial

What is the maximum number of 3.5-to-5-min songs that can fill a 120-min cd? what is the minimum number? on a separate sheet of paper, write your answer as a compound inequality. explain your reasoning.

Algebra Find the values of the variables. (3x + 2) -

Which statements are true about the interquartile range? Select all that apply. Subtract the lowest and highest values to find the interquartile range. Interquartile ranges are not significantly impacted by outliers.

10.77 million rounded to the nearest thousand?

A wave has a maximum of 5. if it's midline is at y=2, what is it's minimum?

Hank HAS a Board 1.75 meters long HE used. 8 meters to build the walls of a bird house he used 0.4 of what is left for the floor he needs 0.6 meter for the roof does he have enough wood for the roof explain