Physics
When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What effect does this have on the velocity of the emerging cannonball? (Do you see why long-range cannons have such long barrels?) Please help; need a origin...
Physics
In grandpa’s time automobiles were previously manufactured to be as rigid as possible, whereas autos are now designed to crumple upon impact. Why? Please help; Thank you in advance for the help...
Calc
In the first three days of its launch, the Galaxy Music Store sold 14 CDs of album x, 8 of album y, and 6 of album z through Branch A. Through Branch B, the store sold 7 CDs of album x, 13 of album y, and 4 of album z. Branch C sold 2 CDs of album x, 11 of album y, and 1 of al...
Calc
If w = <-8, 15>, find ||w||. A. 7 B. 17 C. 23 D.sqrt 7 E. sqrt 23
Calc
Which expression is equivalent to (sin x + 1)(sin x − 1)? A. cos2^x B. -cos2^x C. cos2^x + 1 D. cos^2x − 1 E. -cos^2x + 1
Calc
A video games shop is analyzing its sales performance using matrices. Matrix A contains the unit sales data for each product category (horizontally) per week (vertically). Matrix B contains the unit sales data for weekends for each category (horizontally) per week (vertically)...
Math, Calc
Which rectangular equation corresponds to this set of parametric equations? x = t + 2 and y = t^2 + 3 A. y = (x − 2)^2 − 3 B. y = (x + 2)^2 + 3 C. y = (x − 2)^2 D. y = (x + 2)^2 − 3 E. y = (x − 2)^2 + 3
math 7th
Thanks Ms. Sue I see what I forgot to do.
math 7th
When the temperature is 68°F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometers does sound travel in five seconds? Can some one help with the steps?
Eco103
Given The demand function of a product q=f (a)= 3600-15p find the maximizes total revenue and quanty sold
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