The circumference of a circle is 15 . 515.5 centimeters. ​

​ What is the diameter?

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​Use \mathrm{\pi } = 3 . 14π=3.14 and round the answer to the nearest tenth.

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.