Acement bridge post is 24 inches square and 15 feet 9 inches in length. if the cement weighs 145 pounds per cubic foot, how much does one bridge post weigh? a. 9,280 pounds b. 9,222 pounds c. 9,135 pounds d. 8,700 pounds

No options are correct.

Explanation:  Density = Mass / Volume  Here density of concrete = 145 pounds per cubic foot  Volume = Area * Length of post  A cement bridge post is 24 inches square =   Length of post = 15 feet 9 inch = 15.75 feet  Volume of post = 0.1667 * 15.75 = 2.63  Weight of concrete post = 145* 2.63 = 380.63 pounds.

No options are correct.

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7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9