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2 years ago

If Suzannah's budget limit is $10 per month, how many text messages can she send in one month?

Mathematics

2 answers:

klemol [59]2 years ago

7 0

Answer

how much is she paying per text???

Step-by-step explanation:

mars1129 [50]2 years ago

3 0

Answer: What is the context? Is there a graph or picture?

Step-by-step explanation:

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Scores from an exam are normally distributed with a mean of 85 and a standard deviation of 5. Suppose 188 students take the exam

charle [14.2K]

The mean is $\mu=85$ and standard deviation is $\sigma=5$ . Then the variable $X\sim N(85,5)$ .

Use substitution $Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}$ , then the variable $Z\sim N(0,1)$ .

The probability $Pr(X>80)$ can be calculated in the following way:

for X=80, $Z=\dfrac{80-85}{5} =-1$ and $Pr(X>80)=Pr(Z>-1)$ . From the diagram $Pr(Z>-1)=0.34+0.34+0.135+0.025=0.84$ .

Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80

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Answer: x<6

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2 years ago

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Morgarella [4.7K]

I think the answer is 8/25, 38%, .41

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Martin had 24

inna [77]

Answer:

its C

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I need the answer to this

garri49 [273]

For both of the contests, the variable is the number of competitors which we can set as x.
Consequently, the equation should be 5.50x+34.60=4.25x+64.60

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The fee of the contests is the same when there are 24 competitors

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