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3 years ago

10

Simplify the irrational number 128; then estimate it to two decimal places.

1 answer:

Sergio [31]3 years ago

8 0

^^^^^Simplify

Estimate
Step 1: Estimate the square root of 2:
1.4x1.4=1.96
1.41x1.41=1.9881
1.42x1.42=2.0164
1.9881 is closer to 2 than 2.0164
Square root of 2 is about 1.41

Step 2: Multiply the answer in step 1 by 8
1.41x8=11.28

8 times square of 2 is about 11.28
Square root of 128 is about 11.28

If you put square root of 128 in a calculator it would say 11.31 something...

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Answer:

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Write given data in the table

$\begin{array}{cc}x&f(x)\\^{\circ}\text{C}&^{\circ}\text{F}\\20&68\\30&86\end{array}$

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