PLEASE HURRY!! ANSWER BOTH QUESTIONS: 1. Triangle LMN is similar to Triangle RST. If MN = 21 cm, RT = 9 cm, ST = 7 cm and RS = 6 cm, then what is the perimeter of Triangle LMN? (no pictures)

2. Robert wants to buy a new video game for $96. If the final price, including tax, is $104.64, then what is the percent of sales tax?

3.
At an altitude of 250 miles, the space shuttle travels at approximately 17,500 miles per hour in orbit around the Earth. Use dimensional analysis to determine how many feet per second the shuttle travels.

What percent of the circle below is shaded?

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?