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3 years ago

Find the value of x

Mathematics

1 answer:

julsineya [31]3 years ago

4 0

Answer:

9.3 units

Step-by-step explanation:

By Pythagoras Theorem:

${x}^{2} + {(18 - 5)}^{2} = {16}^{2} \\ \\ {x}^{2} + {13}^{2} = {16}^{2} \\ \\ {x}^{2} + 169 = 256 \\ \\ {x}^{2} = 256 - 169 \\ \\ {x}^{2} = 87 \\ \\ x = \sqrt{87} \\ \\ x = 9.32737905 \\ \\ x \approx9.3$

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4 years ago

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Answer:

Online store will save the most money

Step-by-step explanation:

Amount used in Physical store

Batteries 2packs @$5.99 cost = $5.99*2=$11.98

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Applying the 10% off coupon = 90/100 * $135.83 =$ 122.25

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Now calculate for the online store

Batteries 2packs @$4.99 cost= $4.99*2=$ 9.98

Stereo 1 system @$90 cost= $ 90 *1= $90

CDs 3 CDs @$8.95 cost = $8.95*3=$26.85

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Online store=$127.48

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