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3 years ago

18 + what will get me 45

Mathematics

2 answers:

Alex787 [66]3 years ago

8 0

Answer:

Step-by-step explanation:

Cloud [144]3 years ago

7 0

27 ( don’t ask what this is I need 20 characters long)

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I need answer please 6x + 3y + 2x + y

adoni [48]

Answer:

8x +4y

Step-by-step explanation:

6x + 3y + 2x + y

1) add similar variables together.

2) 6x + 2x = 8x

3y + (1)y = 4y.

3) y by itself basically means 1y, since in front of every variable theres an invisible 1.

5 0

3 years ago

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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

54,860,000 round to the nearest ten million

sergij07 [2.7K]

55,000,000 is the answer :D

6 0

3 years ago

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20 POINTS Congratulations, you just got a job! The company you are working for gave you a $50 signing bonus, and you are being p

olga_2 [115]

Answer:

its the one where the line starts at 50

Step-by-step explanation:

8 0

3 years ago

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What is 1/2 times 1/2 times 2 times 12

4vir4ik [10]

Answer:

Step-by-step explanation:

1/2 * 1/2 * 2 * 12 =

1/2 * 12 (because the 1/2 and 2 cancel out, as they form 1) =

8 0

3 years ago

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