Which expression is not equivalent to the other expressions? 1.) -6(2 x - 4)
2.) -4(3 x + 6)
3.) -(12 x - 6) + 18
4.) -3(4 x - 3) + 15
this is multiple choice

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?