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3 years ago

How do you simplify the ratios?

Mathematics

1 answer:

Masteriza [31]3 years ago

4 0

Let me you divide them if there equal numbers I guess

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What is seven times 34 hours

vekshin1

Answer =9.91666667 days. Hope this helps.

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3 years ago

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Over the first five years of owning her car, Gina drove about 12,700 miles the first year, 15,478 miles the second year, 12,675

kvv77 [185]

Answer:

Part a)

Mean: 13155.6

Mode:None

Median: 12700

Step-by-step explanation:

12700 : 1

15478: 2

12675: 3

11850: 4

13075: 5

Mean :

$=\frac{Sum of all values}{Total no. of values} \\=\frac{12700 + 15478 + 12675 + 11850 + 13075}{5}\\=\frac{65778}{5}\\= 13155.6$

Mode:

All values are distinct, therefore there is no mode. A mode is value which occurs most frequently.

Median:

Arrange the values in ascending order:

11850 , 12675, 12700, 12075, 15478

The mid value is median: 12700

Part b)

It depends upon the data. In this question the best way to predict how many miles Gina will drive in the next years is by using Median of the data.

The reason is that there is a potential outlier in the data i.e 15478. In case of outlier median tends to give better predictions.

6 0

3 years ago

Liam wants to estimate the percentage of people who lease a car. He surveys 240 individuals and finds that 54 lease a car. Find

scoundrel [369]

Answer:

$ME= z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

The confidence interval is 95% and the significance level is $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ and the critical value would be:

$z_{\alpha/2}= 1.96$

And the margin of error would be:

$ME = 1.96 \sqrt{\frac{0.225 (1-0.225)}{240}}= 0.0528$

Step-by-step explanation:

We have the following info given:

$n =240$ the sample size selected

$X=54$ the number of people who lease a car

$\hat p =\frac{54}{240}= 0.225$ the estimated proportion of people who lease a car

The margin of error is given by:

$ME= z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

The confidence interval is 95% and the significance level is $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ and the critical value would be:

$z_{\alpha/2}= 1.96$

And the margin of error would be:

$ME = 1.96 \sqrt{\frac{0.225 (1-0.225)}{240}}= 0.0528$

6 0

3 years ago

PLEASE HELP THIS IS A LINEAR EQUATIONS AND INEQUALITIES!!

AlekseyPX

A because there is no cubes or squared sign

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3 years ago

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Which of the following statements best describes the value of the expression 12x + 2 when x = 9?

RideAnS [48]

Answer:

The answer is C.

Step-by-step explanation:

Hope this helps

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2 years ago

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