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4 years ago

5-2×=13 cual es el numero para 2x

Mathematics

1 answer:

olya-2409 [2.1K]4 years ago

3 0

Answer: 39

Step-by-step explanation: x=13. so 5-2=3 x 13 = 39 espero que esto ayude :)

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Tito bought a baseball card for $24.00 and sold it for $37.00. what is the percent of increase rounded to the nearest tenth?

ladessa [460]

Answer: Option 'b' is correct.

Step-by-step explanation:

Since we have given that

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Selling price of a baseball card = $37

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3 years ago

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www.g The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulb

damaskus [11]

Answer:

$z=\frac{24-40}{8}=-2$

$z=\frac{40-40}{8}=0$

And then the percentage between 24 and 40 would be $\frac{95}{2}= 47.5 \%$

Step-by-step explanation:

For this problem we have the following parameters given:

$\mu = 40, \sigma =8$

And for this case we want to find the percentage of lightbulb replacement requests numbering between 24 and 40.

From the empirical rule we know that we have 68% of the values within one deviation from the mean, 95% of the values within 2 deviations and 99.7% within 3 deviations.

We can find the number of deviations from themean for the limits with the z score formula we got:

$z=\frac{X-\mu}{\sigma}$

And replacing we got:

$z=\frac{24-40}{8}=-2$

$z=\frac{40-40}{8}=0$

And then the percentage between 24 and 40 would be $\frac{95}{2}= 47.5 \%$

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3 years ago

5-2×=13 cual es el numero para 2x​

5-2×=13 cual es el numero para 2x