The average square footage of a U. S. single-family home is 2250 square feet with a standard deviation of 60 square feet. Consider a random sample of 575 homes. Use Chebyshev's Rule to address the following questions. Round solutions to the nearest whole number, if necessary.

At least how many of the sample homes have square footage between 2010 and 2490 square feet?

homes

At least what percentage of the sample homes have square footage between 2070 and 2430 square feet?

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

Vikram is studying the square pyramid below. on st to find the surface area of the pyramid, in square inches, vikram wrote (33.2) (34 ikram wrote (33.2)(34.2)+43(34.2)(284) what error did vikram make? o he used the same expression for the area of all four lateral faces. he used the wrong expression to represent the area of the base of the pyramid. o he used the wrong value as the height when he found the area of the lateral faces. he used an expression for surface area that only finds the total area of three faces.

To factor 4x2-25, you can first rewrite the expression as: