To make a cubic yard (that is, 27 cubic feet) of concrete you could mix 520 pounds of Portland cement with 1,560 pounds of sand, 1, 600
pounds of aggregate (small stones), and about 33 gallons of water.
a. What is the ratio (by weight and in the above order) of this
mix if the water weighs 280 pounds?

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.