4x+7y=8,-x+2y=-2 solve linear system by multiplying

Jorge says the first step to solving the equation below is to combine like terms on each side of the equal sign. David says you should distribute first then isolate x.

Which of these situations can be represented by the opposite of - 9 A. you walk down 9 flights of stairs B. you climb up 9 flights of stairs C. the temperature drops 9 f D. you spend $9 on a book

What is the common denominator as a fraction of 3/4 and 2/5

Bob bought 8 hockey tickets for $59. Adult tickets cost $10 each and child tickets cost $3 each. How many adult tickets and how many child tickets did he buy

A rectangle is 5 times as long as it is wide. The perimeter is 70 cm. Find the dimensions of the rectangle. Round to the nearest tenth if necessary. a. 14 cm by 70 cm c. 11.7 cm by 29.2 cm b. 5.8 cm by 64.2 cm d. 5.8 cm by 29.2 cm

Jenny has saved $3,800 over the last 12 months. She saved either $250 or $350 a month. During the 12 month period, how many times did Jenny save $250 for the month? A) 3 B) 4 C) 5

How do you solve 7-5z=17+5z

Ms. Bloom spent 1 5/12 hours in preparing for her class and spent 2 1/12 hours teaching the class. Later that day, she spent 1 11/12 hours cleaning her work desk at home. How much time did she spend on working this day.?

Paula dives into a swimming pool from a diving board 2 feet above the water's surface. She descends to a depth 7 feet below the diving board. How far is Paula from the surface of the water?

Dan runs 3 miles in 28 minutes. At the same rate, how many miles would he run in 42 minutes?