If air is 68 degrees, and the speed of sound is 343, how long is it going to take for it travel 1,372. Can you show how you do the expression to please?

7x+8y=-18, 4x-9y=-3 solve the system of equations

What is the area of this figure. select from the drop down box menu to correctly complete the statement shows a rectangle 3in. by 16in. and a trapezoid center is 10 in. by 5 in. answers are 128 136 153 258

Jane is cooking beans and rice for dinner tonight. she has 4 cans of black beans, 6 cans of red beans, and 3 cans of garbanzo beans in her cupboard. if she grabs a can of beans without looking at the label, what is the probability of her making black beans and rice for dinner?