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motikmotik
2 years ago
7

There are 16 students in a class with wooden pencils. There are 20 students in a class with mechanical pencils. If a school has

120 students with mechanical pencils, how many students would have wood pencils if the ratio of wooden pencils to mechanical pencils was the same throughout the school?
Mathematics
2 answers:
svet-max [94.6K]2 years ago
5 0

Answer:

maybe 100 cheak it please

IgorC [24]2 years ago
3 0

Answer:

100

Step-by-step explanation:

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Write the equation 3x+2=4x²​ in standard form.
nignag [31]

Answer:

Write the Equation in Standard Form 3x+2=4x^2. 3x+2=4x2 3 x + 2 = 4 x 2. To write an equation in standard form, move each term to the left side of the equation ...

Missing: 4x²​ ‎| Must include: 4x²​

Step-by-step explanation:

Write the Equation in Standard Form 3x+2=4x^2. 3x+2=4x2 3 x + 2 = 4 x 2. To write an equation in standard form, move each term to the left side of the equation ...

Missing: 4x²​ ‎| Must include: 4x²​

8 0
3 years ago
Hannah claims that people who live in southern states spend 9 hours more per week outside than do people in northern states. She
vova2212 [387]

Answer:

b. Hannah is likely to be incorrect because 9 is not contained in the interval.

Step-by-step explanation:

Hello!

Hannah estimated per CI the difference between the average time that people spend outside in southern states and the average time people spend outside in northern states.

The CI is a method of estimation of population parameters that propose a range of possible values for them. The confidence level you use to construct the interval can be interpreted as, if you were to calculate 100 confidence interval, you'd expect that 99 of them will contain the true value of the parameter of interest.

In this example, the 99%CI resulted [0.4;8.0]hs

Meaning that with a 99% confidence level you'd expect the value of the difference between the average time people from southern states spend outside than the average time people from northern states spend outside is included in the interval [0.4;8.0]hs.

Now, she claims that people living in southern states spend 9 more hours outside than people living in northern states, symbolized μ₁ - μ₂ > 9

Keep in mind that if you were to test her claim, the resulting hypothesis test would be one-tailed

H₀: μ₁ - μ₂ ≤ 9

H₁: μ₁ - μ₂ > 9

And that the calculated Ci is tow-tailed, so it is not valid to use it to decide over the hypotheses pair. This said, considering that the calculated interval doesn't contain 9, it is most likely that Hannah's claim is incorrect.

I hope this helps!

6 0
2 years ago
Fourteen is 6 less a number (n). Which equation shows this relationship?
Klio2033 [76]

Answer:

14+6=n=20

Step-by-step explanation:n=20

8 0
3 years ago
Read 2 more answers
Suppose the number of hits a webpage receives follows a Poisson distribution. The average number of hits per minute is 2.4. What
REY [17]

Answer:

The probability that the page will get at least one hit during any given minute is 0.9093.

Step-by-step explanation:

Let <em>X</em> = number of hits a web page receives per minute.

The random variable <em>X</em> follows a Poisson distribution with parameter,

<em>λ</em> = 2.4.

The probability function of a Poisson distribution is:

P(X=x)=\frac{e^{-\lambda}\lambda^{x}}{x!};\ x=0,1,2,...

Compute the probability that the page will get at least one hit during any given minute as follows:

P (X ≥ 1) = 1 - P (X < 1)

             = 1 - P (X = 0)

             =1-\frac{e^{-2.4}(2.4)^{0}}{0!}\\=1-\frac{0.09072\times1}{1} \\=1-0.09072\\=0.90928\\\approx0.9093

Thus, the probability that the page will get at least one hit during any given minute is 0.9093.

6 0
2 years ago
The domain of the function f(x) = 3x3 is {2, 5}. What is the function’s range?
Sholpan [36]
The domain is {2,5} which the set containing the numbers 2 and 5. I'm assuming that the function is f(x) = 3x3<span>. So...

</span>when x = 2, f(x) = 3*23<span> = 3*8 = 24.
</span>when x = 5, f(x) = 3*53<span> = 3*125 = 375.

so this means the functions range is {24, 375}

hope this helped you out</span>
6 0
3 years ago
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