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pentagon [3]
2 years ago
15

Work out the lengths of sides a and b. Give your answers to 1 decimals place. (Pythagoras theoram

Mathematics
1 answer:
Simora [160]2 years ago
8 0

Step-by-step explanation:

h²=o²+a²

a²=8²+5²

a²=64+25

a²=89

a=√89

a=9.433

To one decimal place it is 9.4

for b,

h²=o²+a²

17²=b²+12²

289=b²+144

289-144=b²

145=b²

b=√145

b=12.041

To one decimal place it is 12.0

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3 years ago
Round the following numbers to the nearest tenth. 26.425; 47.546
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26.4 and 47.4

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When rounding to the tenth place value, you look at the number and determine what criteria it falls in.  

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The tenths place value is 4. This number is not 5 or higher, so we do not raise it and we keep the number the same. So, it is 26.4.

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