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3 years ago

Determine the intercepts of the line x-intercept (,) y-intercept (,)

Mathematics

2 answers:

Lesechka [4]3 years ago

6 0

x-intercept (-40,0)

y-intercept (0,15)

asambeis [7]3 years ago

3 0

Answer:

x intercept (-40,0)

y intercept (0,15)

Step-by-step explanation:

the point where a line cuts an axis (X or Y) is called the intercept of that axis.

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Baily is training to run a marathon. The number of minutes it takes to run the marathon after t weeks of training is M= 300(0.95

Whitepunk [10]

Answer:

300=initial time and 0.05 is the amount of time shaved off of the initial time to run the marathon

Step-by-step explanation:

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3 years ago

A box contains 13 red blocks, 8 orange blocks, 9 green blocks, and 10 blue blocks. Anna randomly chooses a block from the box.

Vinvika [58]

Im 90% sure its 0.21

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3 years ago

"You measure 34 dogs' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 13.5 o

liraira [26]

Answer:

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{13.5}{\sqrt{34}} = 4.54$

The lower end of the interval is the sample mean subtracted by M. So it is 67 - 4.54 = 62.46 ounches.

The upper end of the interval is the sample mean added to M. So it is 67 + 4.54 = 71.54 ounces.

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

7 0

3 years ago

Solve for x 3 A X x + 4

irinina [24]

X=4x3•A+-6 hope this helps

6 0

2 years ago

How would the mean change if the number 52 replaced the number 12 in the set?

m_a_m_a [10]

Answer:

increase

Step-by-step explanation:

First, we need to find the mean of the given data set without any change.

10 + 61 + 10 + 44 + 21 + 79 + 27 + 12 = 264

264 ÷ 8 = 33

Now that we have the mean, we can find the mean of the data set with the change of 52.

10 + 61 + 10 + 44 + 21 + 79 + 27 + 52 = 304

304 ÷ 8 = 38

From this, we can see that the mean has increased with the change of 12 to 52. Thus, that's the correct option.

hope this helps!

6 0

2 years ago

Determine the intercepts of the line x-intercept (__,__) y-intercept (__,__)

Determine the intercepts of the line x-intercept (,) y-intercept (,)