Sophia babysat for 3 7/12 hours on Friday. She babysat 2 5/6 on Saturday. For the following statements estimate how long Sophia babysat on Friday and Saturday combined. Explain your answer.

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?