rosa's parents want to lend her money for her high school graduation party, but they also want to teach her about finance and resposibility. They are lending her $1500 and want to be paid back in 18 months, if they want to get $100 in interest what is the percentage rate they should charge her

0.066666

Step-by-step explanation:

100/1500=0.6666

check by multiplying 1500 by 0.6666, its almost 100, due to the fact the 6 repeats for ever.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

3/6   and 9/18

step-by-step explanation: