Answer:
3.10 m
Step-by-step explanation:
The bedroom needs to be 30 cubic meters when finished.
We need to find the dimensions of the room.
The volume of a cube is given by :
Where
a is the side of the cube
So,
So, the dimension of the room is 3.10 m.
Answer: A) 82.3
Step-by-step explanation:
Mean= average
To find mean, you add up all the numbers and divide by the number of numbers.
In this case you do:
(81+78+83+89+80+87+78) ÷ 7
81+78+83+89+80+87+78
=576
Now, divided by 7
576 ÷ 7
= 82.2857142857
Round to nearest tenths place
= 82.3
area of the rectangle= 18*10=180
area of the triangle= =54
180-54=126
Y= 3w-4.5
This is the answer.