3 years ago

How do you write 6,900 in scientific notation? * 10

Mathematics

1 answer:

saw5 [17]3 years ago

6 0

Answer:

6.9 x 103

Step-by-step explanation:

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If dave buys a sample of 70 nails and 6 are bad and 64 are good and he needs 2500 good nails how many nails should dave buy

dexar [7]

Answer:

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Step-by-step explanation:

$Number\ of\ nails=70\\\\Good\ nails=64\\\\percentage\ of\ good\ nails=\frac{good\ nails}{total\ nails}\times 100\\\\percentage\ of\ good\ nails=\frac{64}{70}\times 100\\\\percentage\ of\ good\ nails=91.42857\%\\\\Let\ for\ 2500\ good\ nails\ he\ has\ to\ buy\ x\ nails\\\\91.42857\%\ of\ x=2500\\\\\frac{91.42857}{100}\times x=2500\\\\x=\frac{2500}{0.9142857}=2734.375\\\\x\approx 2735$

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3 years ago

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3 years ago

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k0ka [10]

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CaHeK987 [17]

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Step-by-step explanation:

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3 years ago

What is the value of<br>7x2 - 10, when x = 6?<br>

cestrela7 [59]

Answer:

242

Step-by-step explanation:

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