Find the volume of a regular tetrahedron whose altitude measures 10cm.

Nine out of twelve members of a jury are over 35 years old. What percent of the jury is not over 35?

To the nearest whole number, what is the surface area of a sphere with a volume of 140 cm3? 880 cm2 130 cm2 339 cm2 420 cm2

2 (4-2r) = -2 (r+5) identity or no solution

Eleven diminished by seven times a number.

What is the gcf of 12, 35, and 15

Ivan earns $8 each time he walks his neighbors dog. he already walked his neighbors dog 5 times. how many more times does he need to walk the dog to earn enough money to buy a game that costs $88

What is the measure of angle A in the triangle below? Right triangle A B C is shown. Side B C has a length of 9 and hypotenuse A B has a length of 18. 30° 45° 60° 90°

Estion 15 of 20 : Select the best answer for the question. 15. In order for a button to fit through its buttonhole, the hole needs to be the size of the button's diameter. What size buttonhole is needed for a button with a circumference of 9.

In chemistry a mole is a unit of measure equal to 6.02x10^23 atoms of a substance. the mass of a single neon atom is about 3.35 X 10^-23 g. what is the mass of 2 moles of neon atoms?

Pdcms sold a total of 110 tickets for the school play. an adult ticket is $7 and a student ticket is$4. the school collected a total of $569 how many adults and how many students attended the play