Marco has a bag of 50 colored marbles. there are 12 blue marbles, 18 black marbles, and 20 red marbles. what is the ratio of the numbers of black marbles to the number of blue marbles

The graph shows the 2005 median income of some year-round workers and the number of years of school. Estimate the median income a worker would be expected to earn if they have 9 years of school

Bianca graphed her weight and height over the past several years. A graph titled Bianca's Height and Weight has weight in pounds on the x-axis and height in inches on the y-axis. A vertical line is at x = 130.

Geometry: A rectangular fish tank measures 15 feet long and 6 feet wide and is 3 feet tall. How much water can it hold?

Put 2x - 4y = 8 into y = mx + b form

substitute the given values into the formula & solve for the unknown variable A = bh; A = 12, b = 4

Solve 1/3 x = - 4/5?

What is the volume of an aquarium that is 2 yards wide, 1.5 yards deep, and 1 1/3 yard long?

g a. A 99% confidence level and a sample of 24 observations. 2.807 2.807 Correct b. A 90% confidence level and a sample of 24 observations. 1.714 1.714 Correct c. A 99% confidence level and a sample of 20 observations. 2.845 2.845 Incorrect d.

Rate of proportionality for (-2,4) and (-1,1)

Write the number in standard form 4,00+300+20+9