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antiseptic1488 [7]
2 years ago
8

An object travels 4/5 miles in one-half hour. What is its speed?

Mathematics
1 answer:
Ilia_Sergeevich [38]2 years ago
7 0

Answer:

8/5 miles or 1.6 mile per hour

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muminat

Answer:

how do we graph on here

Step-by-step explanation:

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3 years ago
Help me with this please. ​
riadik2000 [5.3K]

9514 1404 393

Answer:

  x ≈ 9.8

Step-by-step explanation:

The relevant trig relation is ...

  Tan = Opposite/Adjacent

Filling in the given values gives ...

  tan(59°) = x/5.9

Multiplying by 5.9, we have ...

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3 years ago
11 ÷ 924 in long division
Goryan [66]

Answer:

231  your welcome

Step-by-step explanation:

4 0
3 years ago
If outliers are discarded, then the retirement savings by residents of Econistan is normally distributed with a mean of $100,000
zavuch27 [327]

Answer:

P(X>117000)=P(\frac{X-\mu}{\sigma}>\frac{117000-\mu}{\sigma})=P(Z>\frac{117000-100000}{20000})=P(z>0.85)

And we can find this probability using the complement rule and the normal standard table or excel:

P(z>0.85)=1-P(z

The firgure attached illustrate the problem

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the retirement savings of a population, and for this case we know the distribution for X is given by:

X \sim N(100000,20000)  

Where \mu=100000 and \sigma=20000

We are interested on this probability

P(X>117000)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>117000)=P(\frac{X-\mu}{\sigma}>\frac{117000-\mu}{\sigma})=P(Z>\frac{117000-100000}{20000})=P(z>0.85)

And we can find this probability using the complement rule and the normal standard table or excel:

P(z>0.85)=1-P(z

The firgure attached illustrate the problem

7 0
3 years ago
18/25 equals 126/?<br><br>Help, my dudes!<br><br>What does that question mark represent?
kap26 [50]

Answer:

the "?" represents the number 175

Step-by-step explanation:

126/18=7

so, you would multiply the 25 by 7 to get 175

hope this helps!

4 0
3 years ago
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