Abag contains six red and ten black marbles if you pick a marble from the bag what is the probability that the marble will be black. if you pick a marble record it’s color and return it to the back 200 times how many times can you expect to pick a black marble

You are responsible for designing a new city. you are inspired by pierre charles l'enfant, who laid out the streets of our nation's capital. numbered streets run north and south, and lettered streets run east and west. avenues are named after states, and they intersect the streets on a diagonal. the streets are parallel and the intersections form similar triangles. 18th st. is 454 meters long and the intersection of 18th and k st. is 207 meters from connecticut ave. if 19th st. and k st. is 385 meters from connecticut ave., what is the length of 19th st.?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.