At what rate percent per year will a sum of money double itself in 15 years

The sum of two number is 200 and the two numbers are in a ratio of 4:6 find the larger number

Estimate. 45.86 + 54.14 A. 90 B. 99 C. 100 D. 110

Convert 12,000+7*10^ (4) to scientific notation

The first term in the expansion of the binomial (3x + y) 4

Explain why the conversion ratios used between the SI and imperial systems are not nice, round numbers like those used to convert within either system.

Airplane A takes off and ascends at a rate of 3000 ft/min. At the same time, Airplane B, which is flying at 30,000 ft, begins to descend at a rate of 2500 ft/min. Let h represent the height off the ground in feet, and let t represent time in minutes.

What is y=2x+1 3x+4y=26 equal?

In a certain manufacturing plant, the first operation can be done on any one of five machines, the second operation on only one machine, the third operation on any one of six machines, and the fourth operation on either of two machines.

using the frequency table below find how many students recived a score of 70 or better on a math test

Find the area of the following ellipse Use = 3.14 and round to nearest tenth. a = 8 in.; b = 7 in.