3 years ago

What is the inverse of f={(1,3),(4,2),(5,1)}

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

Answer:

f={(3,1),(2,4),(1,5)}

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Slav-nsk [51]

Let k be the scale factor relating two similar prisms $P_{1}$ and $P_{2}$ , such that for corresponding parts of prisms $P_{1}$ and $P_{2}$ (for heights, in particular) we have $k= \frac{height\ of \ P_{1} }{height \ of\ P_{2} }$ . In our case $k= \frac{4}{10} = \frac{2}{5}$ .
For surfaces area we have $\frac{Surface \ area \ of \ P_{1} }{Surface \ area \ of \ P_{2}} = k^{2} =( \frac{2}{5} )^{2}= \frac{4}{25}$ .
So, the right answer is 4:25 (choice B)

4 0

4 years ago

Ming says that 0.24 > 14 because 0.24 = 24. Which best explains Ming's error?

masya89 [10]

Answer:

0.24 = 24 hundredths, not 24

Step-by-step explanation: