Round 78,879 to the nearest ten

Which equations have one solution? I NEED IT FAST A) 1/3x+3=26+6/18x-23 B) x+3+3x=-3+4x+6 C) 2 (1/5+1/4x-2x=x-1 D) 4.3x+2.5-2.2x+2.2-2.1x=0 E) 2 (4x+3+2x=5 (2x+3) F) 2/5x+10+3/5x=2x+5

You have a box that is a good size for your DVD collection. Two rows of DVD's will fit in the box. The box is 10 inches. Each DVD is 5/8 inches wide. How many DVD's will fit in the box?

How many inches equals one half of a mile

Solve x^2-8x=3 by completing the square.

Two drivers are 420 miles away from each other when they started moving towards each other. They meet after 4 hours. What is the speed of the first car, if the second car's speed is 45 mph?

Ruby bought an animal bank for her nephew. She is the only one who puts money in the bank, and no money is taken out. The function f (v) = 10 + 2y describes the amount in the bank after v visits with her nephew.

What is the volume of a cube with a side length that measures 6 cm?

A jeweler buys gold jewlryand resells the gold to refinery. the jewers buys gold for 1235.55 per ounce, and then resells it for 1376.44 per ounce. How much pfofit does the jeweler make from buying and reselling 73.5 ounce of gold

Using the formula r=d/t, where d is the didtance in miles, r is the rate, and t is the time in hours, at which rate must you travel to cover 185 miles in 2.5 hours

Several students and adult chaperones are going on a field trip to the theater. Each student ticket cost $2 and each adult ticket cost $4. The total cost for the trip is $144. There are 4 times as many students as adults going on the trip.