Tanya thinks that the expression 7.4k - 4.3 can be simplified as 3.1k. Part A:
Is Tanya correct in her thinking?

Part B: Justify your answer.

(Make the answers kinda of a 8th grade kid plz)

Can someone me out here number 4 plz

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.