Answer: 60
Step-by-step explanation:
Find the total number of students.
In this case, there are 8 total students. Multiply 60 * 8 = 480
Add all the numbers up.
85 + 65 + 36 + 48 + 75 + 39 + 72 = 420
480 - 420 = 60
x = 60
Answer:
28.8 and 180
Step-by-step explanation:
you just times B by 2/5 to get C and divide it by 2/5 to get A
C = (72)(2/5) = 28.8 km³
A = (72)/(2/5) = 180 km³
We know the answers make sense because A shrinks to get B and B shrinks to get C, and our answers match that.
In this case you would have numbers that are not whole, so you have decimals.
Ex of how you estimate numbers:
5.45 estimate is 5
3.20 estimate is 3
7.50 estimate is 8
1.89 estimate is 2
Everything that is beyond .50 decimals is rounded up to the next no. 7.50 is estimated to 8 because the decimals are .50 or above. Same goes for the other ex. 1.89 which will become 2.
Everything that is under the .50 decimals we rounded down to the same number, 5.45 has the decimals under .50 that means that the number is rounded down to 5. same applies to 3.20 which will become 3.
Hope you understand the explanation!
Cheers
Answer:
the first box
fourth box
fifth box and last box
Step-by-step explanation: