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3 years ago

12

A paddle boat company charges $15 rental fee plus $12.75 per hour for rentals. If Jimmy has $45, which inequality can he use to

determine if he has enough money to rent a paddle boat for 4 hours?
1. 15 + 12.75x ≤ 45
2. 15 + 12.75x ≥ 45
3. 15x + 12.75 ≤ 45
4. 15x + 12.75 ≥ 45

1 answer:

Varvara68 [4.7K]3 years ago

8 0

Answer:

3

Step-by-step explanation:

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16= q+1 16= 3+1 Q would equal 3

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What makes this graph misleading?

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2 years ago

A bond analyst is analyzing the interest rates for equivalent municipal bonds issued by two different states.

xenn [34]

Answer:

$z=\frac{(3.2-3.4)-0}{\sqrt{\frac{0.141^2}{60}+\frac{0.224^2}{60}}}}=-5.85$

The p value can be calculated with this probability:

$p_v =2*P(z$

The p value for this case is a value very low and near to 0 so then we have enough evidence to reject the null hypothesis and we can conclude that the true means for this case are significantly different

Step-by-step explanation:

Information provided

$\bar X_{1}=3.2$ represent the mean for sample A

$\bar X_{2}=3.4$ represent the mean for sample B

$\sigma_{1}=\sqrt{0.02}= 0.141$ represent the sample standard deviation for A

$s_{2}=\sqrt{0.05}= 0.224$ represent the sample standard deviation for B

$n_{1}=60$ sample size for the group A

$n_{2}=60$ sample size for the group B

$\alpha=0.05$ Significance level provided

z would represent the statistic

Hypothesis to test

We want to verify if that there is a difference in the interest rates paid by the two states, the system of hypothesis would be:

Null hypothesis: $\mu_{1}-\mu_{2}=0$

Alternative hypothesis: $\mu_{1} - \mu_{2}\neq 0$

The statistic for this case since we know the population deviations is given by:

$z=\frac{(\bar X_{1}-\bar X_{2})-\Delta}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}}$ (1)

Replacing the info given we got:

$z=\frac{(3.2-3.4)-0}{\sqrt{\frac{0.141^2}{60}+\frac{0.224^2}{60}}}}=-5.85$

The p value can be calculated with this probability:

$p_v =2*P(z$

The p value for this case is a value very low and near to 0 so then we have enough evidence to reject the null hypothesis and we can conclude that the true means for this case are significantly different

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3 years ago

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Answer:

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Step-by-step explanation:

We can use a system of equations (b = # of bears, c = # of candy boxes):

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We can use substitution by isolating b in the first eq.: <em>b = 57 - c</em>, then substitution b with 57 - c in the second eq.: <em>8(57 - c) + 6c = 380</em>.

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Jobisdone [24]

This may be wrong, but from my math:

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3 years ago