you are practicing your skills at building a house of cards. the world record for the tallest free standing house of cards is over 25 feet high! use the picture of the house of cards shown to answer the questions that follow.
how can you find the number of cards needed for any row number?
justify your answer.

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size. find the probability of drawing a white or red marble on the first draw. 125 12 01 next question ask for turn it in

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10