What is 4r+6s-t=-18

3r+2s-4t=-24

-5+3s+2t=15 using elimination method

You randomly draw a marble from a bag, record its color, and then replace it. You draw a blue marble 3 out of 50 times. What is the experimental probability that the next marble will be blue?

A tree needs to be staked down before a storm. If the ropes can be tied on the tree trunk 8 feet above the ground and the staked rope should make a 30 degree angle with the ground, how far, to the nearest tenth, from the base of the tree should each

Jemboy wants to make his 8 meter square pool into a rectangular one by increasing its length by 2m and decreasing its width by 2m

On a ballot, the candidates for each office are listed together under the office for which they are running.

Need the answer, i want to make sure its right. The area of a rectangular garden is 156 square meters. The width is 7 meters longer than one-half of the length. Find the length and the width of the garden.

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.