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3 years ago

Find the y intercept

Mathematics

2 answers:

erica [24]3 years ago

7 0

Step-by-step explanation:

Slope of line ST = Slope of line PQ = -3.

y = -3x + c

When x = 3, y = -1

=> (-1) = -3(3) + c, c = 8

Therefore the equation of line ST is y = -3x + 8 and the y-intercept is 8.

avanturin [10]3 years ago

7 0

Step-by-step explanation:

Hey there!

The given equation of line PQ is :

y = -3x -12.

Comparing the equation with y = mx + c. We get;Slope (m1)= -3

We know the condition of parallel lines is slope of 1st line = slope of 2nd line. (i.e m1=m2).

Therefore, slope of PQ= slope of ST = -3.

Now, The point through which ST passes is (3,-1) and we found its slope as -3.

So, let's use one point formula.

$(y - y1) = m2(x - x1)$

$(y + 1) = - 3(x - 3)$

$y + 1 = - 3x + 9$

$y = - 3x + 8$

Comparing the equation with y = mx+c. We get y-intercept is "8".

Therefore, y-intercept is "8".

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8 minus the quotient of 15 and Y equals a product of Y and 13

meriva

Translating this verebal statement into a symbolic statement:

8 - 15/y = 13y.

Note: your statement would sound better if written as "8 minus the quotient of 15 and y equals the product of y and 13."

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4 years ago

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Alenkinab [10]

Answer:

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2 years ago

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3 years ago

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Suppose that you construct a 95% confidence interval for the population mean, using some sample values, and you obtain the range

mel-nik [20]

Answer:

Step-by-step explanation:

Hello!

You have the 95% CI for the mean [50; 70]

The amplitude for this interval is a= 20 and its margin of error is d= 10.

If the interval was constructed as X[bar] ± margin of error

Where the margin of error is the product of the statistic value due to the standard deviation of the distribution.

If you reduce the confidence level, the value of the statistic will be also reduced, so you would expect a shorter margin of error and amplitude for the 90% CI

Symbolically: d= $Z_{1-\alpha/2}$ * (δ/√n) ⇒ d↓= $Z_{1-\alpha/2}$ ↓ * (δ/√n) if d↓ ⇒ a↓

50 to 100 has an a= 50 and d= 25

70 to 90 has an a= 20 and d= 10

60 to 80 has an a= 20 and d= 10

55 to 95 has an a= 40 and d= 20

65 to 85 has an a=20 and d= 10

None of the given intervals corresponds to a 90% interval for the same sample as the first interval 50 to 70.

Another detail to keep in mind is that the intervals for the population mean are centered in the sample mean. From the first interval you can deduce that it is centered in X[bar]= 60 (Upper bond - margin of error = sample mean), if the other intervals were constructed with the same sample values, they should all be centered in 60.

I hope you have a SUPER day!

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4 years ago

Why are tenths, fifths, and fourths easy to convert to percent's?

meriva

Because they all go into 100 easily. for example 10*10=100 5*20=100

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3 years ago

Find the y intercept​

Find the y intercept