In a newspaper ad, a scientist asks for volunteers to test a new theory on the speed of light by using a machine he invented. how would you know that this is an unreliable newspaper ad

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.

Read the article titled "castro resigns." why did the us impose trade sanctions against cuba in 1962?

Zac wanted to determine the measure of r and of ? r in the triangle below. to fine the measure of r, zac sets up the problem.42^2 + 24^2 = r 2. determine whether zac set the problem up correctly.