1/4x + 2/3y = 5 1/2x + 3/2y = 11 which of the following expressions represents the multiplicative property of equality a.) 3x + 4y = 60; x + 3y = 22 b.) 3x + 8y = 60; x + 3y = 22 c.) x + 2y = 60; x + 3y = 22 d.) 4x + 3y = 60; 2x + 2y = 22 i need asap.

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling