Answer:
The answer is B.
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
the dimensions of the rectangle when its area is 9cm^2
Answer:
210.6 cm
Step-by-step explanation:
Given that a piece of ribbon is cut into two shorter pieces in the ratio 2.8:1.25.
So that means length of the first smaller piece = 2.8x
and length of the second smaller piece = 1.25x
Then difference between their lengths = 2.8x-1.25x = 1.55x
Given that difference is equal to 80.6 centimeters then we get
1.55x=80.6
or x= 80.6/1.55
or x=52
then length of the original piece = 2.8x+1.25x
= 2.8*52+1.25*52
= 145.6+65
= 210.6 cm
Avagadros number is 6.02*10^23...
Hope it would help you!
They won with a total of 115 you subtract 20 from 210 and get 190 then divided by 2 you should get 95 then add 20 then you get 115
