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IrinaVladis [17]
4 years ago
15

Maria is planning to have her birthday party at a skating rink. The rink charges a one time fee of $50 plus an additional charge

for each guest. Maria pays $68 for 6 guests. What is the additional charge that Maria has to pay for each guest if the rink charges the same additional charge per guest?
Mathematics
1 answer:
IgorC [24]4 years ago
3 0
This is a 2 year old problem, it's $3
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Solve for x: 2x + 5 = -27
Goryan [66]

Answer:

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3 years ago
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The weights of 67 randomly selected axles were found to have a variance of 3.85. Construct the 80% confidence interval for the p
VLD [36.1K]

Answer:

3.13

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 67

Variance = 3.85

We have to find 80% confidence interval for the population variance of the weights.

Degree of freedom = 67 - 1 = 66

Level of significance = 0.2

Chi square critical value for lower tail =

\chi^2_{1-\frac{\alpha}{2}}= 51.770

Chi square critical value for upper tail =

\chi^2_{\frac{\alpha}{2}}= 81.085

80% confidence interval:

\dfrac{(n-1)S^2}{\chi^2_{\frac{\alpha}{2}}} < \sigma^2 < \dfrac{(n-1)S^2}{\chi^2_{1-\frac{\alpha}{2}}}

Putting values, we get,

=\dfrac{(67-1)3.85}{81.085} < \sigma^2 < \dfrac{(67-1)3.85}{51.770}\\\\=3.13

Thus, (3.13,4.91) is the required 80% confidence interval for the population variance of the weights.

8 0
3 years ago
SOLVE THE SYSTEM USING ELIMINATION!!!!<br><br><br> HURRY ILL GIVE BRAINLIEST!!
Neporo4naja [7]

Answer:

(5,3)

Step-by-step explanation:

add the equations to eliminate to x's and get 8y=24

divide both sides by 8 to get y=3

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balandron [24]

Answer:

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Step-by-step explanation:

The area of a rectangle is found by multiplying its length by its width. For dimensions of 5/6 in by 1/3 in, the area is ...

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3 0
4 years ago
I need help on this how do i do this
kap26 [50]
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3 years ago
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