A rectangular Persian carpet has an area of (x2 + 8x − 20) ft2 and a length of (x + 10) feet. The Persian carpet is displayed on a wall. The wall has a width of (x + 1) feet and an area of (x2 + 31x + 30) ft2. Find the dimensions of the rug and the wall if x = 20 feet. The length of the carpet is feet and the width is feet. The length of the wall is feet and the width is feet.

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation:

for future students the answer is b

hope i

-lavira: )

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.