Elena went 60 meters in 15 seconds noah went 50 meters in 10 seconds elena and noah both moved at a constant speed .how far did elena go in 1 second

4 meters

Step-by-step explanation:

About Elena we know that she moves at 60 meters each 15 seconds:

Distance     Time

   60m     →   15s

and we want to know how far she would go in only 1 second:

Distance     Time

   60m     →   15s

      x        →    1s

where x is the unknown distance, that we calculate as follows: multiply the cross quantities in the table and divide by the other number in the corner.

In one second she will travel 4 meters.

1e+27

step-by-step explanation:

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.