Answer:
ima say 10 hours since its 9.45 hours she works.
Answer: 2.25x

Scientific notation is used in science because the number can be vary from so much that using decimal is making it hard. The number expressed in

form. Both number in the question is already in scientific notation. Then to multiply the number and keep it at scienfitic notation the calculation should be:
2.5 x

x 9 x

= 22.5 x

= 2.25x
10-4×>10,000??? I'm sorry Im not good at math
The correct answer is C because they are asking for the specific screening kit marks
Answer:
Step-by-step explanation:
320:60 you have to find the multiples I am not going to give you the full answer that is cheating