3 years ago

Which rational number could be graphed between -3 and -4

Mathematics

2 answers:

Burka [1]3 years ago

7 0

Answer:-3.75

Step-by-step explanation:

Snezhnost [94]3 years ago

3 0

Answer:

-3.5

Step-by-step explanation:

An example is -3.5.

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When Mr. Gree bought a used car he made a

Ilya [14]

Answer:

2750

Step-by-step explanation:

825/30=27.5

27.5X100=2750

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3 years ago

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

4 0

3 years ago

Read 2 more answers

What is n? If 3 to the power of n equals 27

jok3333 [9.3K]

3^n=27

Solve Exponent.

3^n=27

log(3n)=log(27)(Take log of both sides)

n*(log(3))=log(27)

n=log(27) / log(3)

n=3

4 0

2 years ago

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YOO PLZ HELP ASAP!! MARKING BRAINIEST!!!

Alexeev081 [22]

Answer:

attached the drawing

Step-by-step explanation:

hope it works

5 0

3 years ago

The ratio of green houses to white houses in Queens is 5 to 7. There are 63 white houses, How many green houses are there?

Ludmilka [50]

45 to 63

Your welcome my guy

3 0

2 years ago