If it cost $60 for 10 students to go on field trip and $70 for 20 student to go on field trip and it cost$80 for 30. How much wo
2 answers:
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Answer:
Step-by-step explanation:
In order to add or subtract numbers in scientific notation, the powers of ten must have the same exponent. In this caes the diameter of an average human body cell is a power of -4 and the diameter of a plant cell is a power of -3. In order to add them, we can move the decimal over for the body cell diameter:
Add the two values:
Step-by-step explanation:
perimeter of semicircle=πr+2r