12 (x+4) + 3 (-3-2x) = 71 what does x equal

10. To travel the Erie Canal, a boat must go through locks that raise or lower the boat. Traveling east, a boat would have to be lowered 12 feet at Amsterdam, 11 feet at Tribes Hill, and 8 feet at Randall.

At a math competition 2 students can answer 40 questions in 1 hour. At the same rate, how many questions could 5 students answer in 15 mins?

The question is: Complete the statement. Round to the nearest hundredth if necessary. 64 lb ≈ __ kg I think there may be a problem with website. (Big Ideas Math)

Which graph is given by the equation y=-6x-3?

What is 7•8+1•40. Explain your answer

Alexis and Jonathan challenged each other to a typing test. Alexis typed 54 word in one minute, which was 120% of what Jonathan typed. How many words did Jonathan type in one minute?

Leona places a cone with a volume of 512 cm3 into a rectangular fish tank that has two square faces, each with sides measuring 20cm, and three rectangular each that are 49cm long and 20cm wide.

Percent increase from 86 to 150

The following table shows the speeds at which Jeff does 444 activities. For example, biking has a rate of 191919 miles in 222 hours.

Which two solid figures have the same volume? A. An oblique solid with a base of 4 cm2 and a height of 8 cm B. A cone with a base of 4 cm2 and a height of 8 cm C. An oblique solid with a base of 4 cm2 and a slant height of 8 cm D.