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katovenus [111]

3 years ago

8

Plot the x- and y-intercepts to graph the equation. y=−12x−3 could you guys plot it on a graph? if so thank you whichever one is

right ill give brainliest .

1 answer:

tamaranim1 [39]3 years ago

3 0

Answer:

(-4, 0) (8, 0)

Step-by-step explanation:

I did the K12 test.

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A health research institute collects information from 20 individuals on the number of years they have spent smoking cigarettes,

olga55 [171]

The correlation coefficient of the health research institute data measures the relationship between the age and the years of the smokers

The correlation coefficient is 0.53

<h3>How to calculate the correlation coefficient</h3>

The correlation coefficient (r) is calculated as:

$r = \frac{n(\sum xy) - \sum x \sum y}{\sqrt{[n \sum x^2 - (\sum x)^2][n\sum y^2 - (\sum y)^2}}$

Using the given parameters, we have:

$r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1257^2][20 * 836 - 116^2}}$

Evaluate the exponents

$r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1580049][20 * 836 - 13456}}$

Evaluate the products

$r = \frac{164980 - 145812}{\sqrt{[1976460 - 1580049][16720 - 13456}}$

Evaluate the differences

$r = \frac{19168}{\sqrt{[396411*3264}}$

Evaluate the product

$r = \frac{19168}{\sqrt{1293885504}}$

Evaluate the root

$r = \frac{19168}{35970.6}$

Evaluate the quotient

$r = 0.53$

Hence, the correlation coefficient is 0.53

Read more about correlation coefficient at:

brainly.com/question/1564293

8 0

2 years ago

What are the solutions to the quadratic equation 4x2=64?

Paraphin [41]

X=4 or X=-4 because 4(4)^2 does =64

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3 years ago

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Help me find the right angles URGENT !!

sasho [114]

Answer:

q is around 85-89 and S is 91-95

Step-by-step explanation:

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3 years ago

How do you solve 8x-3y=-70 and -2x+5y=-8 using the elimination method please show work.

lora16 [44]

Answer:

6x+2y=-78

Step-by-step explanation:

8x-3y=-70

-2x+5y=-8

6x+2y=-78

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14 divided by 2/7 how do I divide it and what is the anwer?

Anika [276]

Dividing by a fraction is like multiplying with the inverse.

So 14 / (2/7) is the same as 14 * 7/2, which is 49

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3 years ago

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