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Anuta_ua [19.1K]
3 years ago
6

Los estudiantes de grado decimo deciden realizar un paseo de despedida de fin de año. Han cotizado los precios para viajar a Car

tagena y encuentran que los tiquetes de ida y regreso cuestan 420000 y que en promedio cada día de estadía la cuesta 120000 por persona.
La función que representa el costo total por estudiante (y) en función de los días de estadía en Cartagena (x) es:
A. Y=420000 x +120000
B. Y=120000 x + 420000
C. Y=420000 x - 120000
D. Y=120000 x - 420000
Mathematics
1 answer:
nalin [4]3 years ago
3 0
The correct answer is B) y = 120000x + 420000.

We multiply 120,000 by x since that is the cost per person per day, and x is the number of days.  We add 420,000 because that is the one time cost of the round trip airfare.
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7. License Plate Laws The Chapter Problem involved passenger cars in Connecticut and passenger cars in New York, but here we con
sergejj [24]

Yes it is true that commercial truck owners violate laws requiring front license plates at a higher rate than owners of passenger cars because null hypothesis is rejected.

Given among 2049 Connecticut passenger cars, 239 had only rear license plates. Among 334 Connecticut trucks, 45 had only rear license plates.

let p_{1} be the probability that commercial cars have rear license plates and p_{2} be the probability that connected trucks have rear license plates.

                         Cars                     Trucks                         Total

Total                  2049                    334                             2383

x                          239                      45                                284

p                        0.1166                   0.1347                          0.1191

α=0.05

Hypothesis will be  :

H_{0}:p_{1} =p_{2}

H_{1} :p_{1} < p_{2}

It is a left tailed test at 0.05 significance.

Standard errors of p=\sqrt{p(1-p)/n}

=\sqrt{(0.1191*0.8809)/2383}

=\sqrt{0.1049/2383}        

=0.0066

Test statistic Z=p difference/standard error

=(0.1166-0.1347)/0.0066

=-0.0181/0.0061

=-2.967

p value=0.001505<5%

Since p is less than 5% we reject null hypothesis.

We cannot calculate standard deviation so  we cannot calculate confidence interval.

Hence there is statistical evidence at 5% significance level to support that commercial truck owners violate laws requiring front license plates at a higher rate than owners of passenger cars.

Learn more about z test at brainly.com/question/14453510

#SPJ4

5 0
2 years ago
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NemiM [27]

Answer:

1) b⁵⁴

2) 7⁷

Step-by-step explanation:

When you have an exponent raised to an exponent, like in #1, you simply multiply the exponents.

When you are dividing two numbers with exponents and they have the same base, like in #2, you subtract the denominator exponent from the numerator exponent.

7 0
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Answer:

y = |1/4x|

Step-by-step explanation:

The slope is 1/4

7 0
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9. Richard wants to start a college savings account for
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Answer:

d

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Which of the following is the solution to the equation 5/6 x = -1/6 ?
mr Goodwill [35]
\displaystyle \\  \frac{5}{6} \cdot x= -\frac{1}{6}  \\ \\ \\ x= -\frac{1}{6}:\frac{5}{6} \\ \\ \\x=-\frac{1}{\not6} \cdot  \frac{\not6}{5} = - \frac{1}{5}
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