The correct answer.would be A. because 100 x 10,000 is 1,000,000. You just need to round then multiply.
-I hope this helps you out. :)
The digit in the hundred millions place is 9.
Answer:
about 130 hp
Step-by-step explanation:
The displacement is smaller by a factor of 220/390, so we expect the horsepower to be smaller than 230 hp by the same factor:
(220/390)(230 hp) ≈ 129.74 hp ≈ 130 hp
This is an example of observational study, because the biologist is not interfering or interacting with the subjects of study but just watching and registering data (recording with cameras).
The biologist is not conducting an experiment because (he is not setting up special conditions to register different responses to drive conclusions), and the biologist is not making any survey (questionnaires for example).
Answer: observational study
When we make a solution, the solute doesn't go away. All the solute we use stays in the solution it only dissolve in the solution.
The total mass of solution is always equal to the mass of solvent added to the mass of solute.
Therefore 5gram + 20 gram = 25 gram of solution.
5/25×100= 20%
