10. The number of yards a football team moves on the field can be represene using the expression 18 +1-4. How many yards does the football team
move?

12

Step-by-step explanation:

The question is asking to find the absolute value of 8 plus the absolute value of -4.

The absolute value of a number is simply the distance that number lies away from 0 on the number line.

This means that the absolute values of both 8 and -4 is positive, because absolute value eliminates the direction that a point is in, so there is no negative.

So the question is asking what 8 + 4 is, which is 12.

The football team moved 8 yards forwards and then 4 yards back. In total, that would be 12 yards moved.

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.