The Three Gorges Dam started operation in China in 2008. With the largest electrical generating capacity in the world, the dam is about 2000 m long and 180 m high, and has created a lake longer than Lake Superior. Assume the dam is rectangular in shape. (a) Estimate the water pressure at the base of the dam. (b) Set up and evaluate a definite integral giving the total force of the water on the dam.

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)