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hoa [83]
3 years ago
11

Please help aaa

Mathematics
2 answers:
Setler79 [48]3 years ago
7 0

Answer:

13/14

Step-by-step explanation:

13/35 is the probability of drawing 2 red candies.

2/5 = 14/35 is the probability of drawing 1 red candy.

13 and 14 make 13/14.

Hope This Helps :)

timofeeve [1]3 years ago
5 0

Drawing 2 red candies without replacement is 13/35.

Probability of picking one is 2/5.


We can say that the probability of the first candy being red is 2/5

So the probability of the second candy also being red would be 13/35 divided by 2/5 which = 13/14.



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vfiekz [6]

Answer:

2π² or 19.74

Step-by-step explanation:

  • <em>Circumference of a circle is C = 2πr</em>

Given r = π

<u>Then</u>:

  • C= 2π*π = 2π²

or

  • ≈19.74
6 0
3 years ago
Deon bought a desktop computer and a laptop computer. Before finance charges, the laptop cost $250 less than the desktop. He pai
zysi [14]

Answer:

300

Step-by-step explanation:

Let x = cost of desktop computer; then x - 250 = cost of laptop computer

converting % to decimals, 9% = 0.09 and 6% = 0.06

Then, 0.09x + (x - 250)0.06 = $300

0.09x + 0.06x - 15 = $300

0.15x = $315

x = $2100

then x - 250 = $1850

Proof: $2100•0.09 + 1850•0.06 = $189 + $111 = $300

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3 years ago
What is the area of this figure?
sergiy2304 [10]

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3 0
3 years ago
The output from a statistical computer program indicates that the mean and standard deviation of a data set consisting of 200 me
lesya [120]

Answer:

The limit that 97.5% of the data points will be above is $912.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 1500, \sigma = 300

Find the limit that 97.5% of the data points will be above.

This is the value of X when Z has a pvalue of 1-0.975 = 0.025. So it is X when Z = -1.96.

So

Z = \frac{X - \mu}{\sigma}

-1.96 = \frac{X - 1500}{300}

X - 1500 = -1.96*300

X = 912

The limit that 97.5% of the data points will be above is $912.

6 0
3 years ago
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pishuonlain [190]

Answer:

9. a) 180 - (55+90) = a

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Step-by-step explanation:

3 0
3 years ago
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