Imani scored in the 70th percentile of her class on the latest math exam. What does this mean in relation to the data set, and what did she score on the exam? (5 points) {35, 42, 56, 68, 69, 70, 72, 77, 78, 78, 82, 85, 87, 88, 90, 93, 94, 96, 96, 99} a. Imani scored as well as or better than 70% of her classmates, with a score of 88. b. Imani scored worse than 70% of her classmates, with a score of 72. c. Imani scored as well as or better than 70% of her classmates, with a score of 72. d. Imani scored worse than 70% of her classmates, with a score of 88.

a. Imani scored as well as or better than 70% of her classmates, with a score of 88.

Step-by-step explanation:

ARRANGE DATA LEAST TO GREATEST

(p/100)*n

(70/100)*20=14

14th position is 88

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3