Explain why you cannot use mass or volume alone to identify substances.

X-6y + 4z=-12 x+y-4z=12 2x + 2y + 5z = -15 Systems of equations with three variables and three equations

About 2% of the worlds population have gray eyes. What is the probability that in a random sample of 1,500 people, more than 45 of them has gray eyes? A. 1 B. 0.0028 C. 0.02 D. 0.9972 E. 0.98

Which is a value of x if sin 60°=cos (x+10) °

How many numbers must be selected from the set {1, 3, 5, 7, 9, 11, 13, 15} to guarantee that at least one pair of these numbers add up to 16?

Ricardo made a data table with 4 rows and 10 columns. He colors three eights of the cells yellow. What number of cells are yellow?

Drake rolls two fair number cubes. 1 2 3 4 5 6 1 1 2 3 4 5 6 2 2 4 6 8 10 12 3 3 6 9 12 15 18 4 4 8 12 16 20 24 5 5 10 15 20 25 30 6 6 12 18 24 30 36 What is the probability that the product of the two numbers Drake rolls is less than 15?

Your friend bought 3 bags of wild bird seed and an $18 bird feeder. Each bag of birdseed costs the same amount. If your friend spent $45, find the cost of one bag of birdseed.

Clara is asked to find the surface area of a sphere which has radius r, of 18 in. She says the surface area is 226.08 in. squared. What is the surface area of the sphere? What is Clara 's likely error? Use 3.14 for pi.

Factor out coefficient of variable for 4h-3

What type of quadrilateral can be formed using two eqalateral