Solve each equation. Also, for each step, state the property of equality used. 1. − 11 = 29
2. 16 = + 20
3. 7 = 1 +
4. −9 = 153
5. 2 = −20
6. 12 = − 1
7. = −13
8. −30 = −18 +
9. + 15 = 32
10. −30 = − 15

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone

Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?