Im back after like 30 minutes of my dad trying to explain and saying "thats f-ed up" Like he said, don't just give me the answer. Explain it to me.

Here is an equation: 4x - 4 = 4x + . What could you write in the blank so the equation would be True for no values of x.

o 4x

o -7

o 19

o 2x

o -4

Which of the following expressions are equivalent ?

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?