Use mental math to simplify each expression
1. 36+12+4
2.19.2+0.6+12.4+ 0.8
3.2•16•10•5
4.12•18•0•16

Pls urgent max amount of points will be given and pls do not answer if unsure or you will be reported by me and brainliest answer gets the brainliest .. thing so yeh

Asequence of numbers begins with 12 and progresses geometrically. each number is the previous number divided by 2. which value can be used as the common ratio in an explicit formula that represents the sequence? 1/2 2 6 12

For the equations below which statement is true ? -2x=14 6x=-42