What is a mass of a 78.852 grams rock

78.9 grams

Step-by-step explanation:

We are asked to find mass of the rock rounded to the nearest tenth.

We know that rounding to nearest tenth means rounding to one digit after decimal.

We can see that hundredths value in our given number is 5, so we will round up to nearest tenth as:

Therefore, the mass of the rock rounded to the nearest tenth would be 78.9 grams.

step-by-step explanation:

this is not a question

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540