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3 years ago

10

24. A metal coin is located at (18, 10). How much closer or farther from Ann is the coin than the jewelry?

1 answer:

Vinvika [58]3 years ago

4 0

Answer:

10.5

Step-by-step explanation:

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use the plot of the concentration of cu(no3)3 versus absorbance provided. if the absorbance of an unknown was determined to be 0

Helen [10]

Using the linear regression equation, the concentration of the unknown solution is 0.2161 M.

Linear regression describes the relationship of two variables. It may not be exact but it is the line that best fit the data. The equation for a linear regression is in the form y = bx + a, where x and y are the two variables.

If the absorbance of an unknown was determined to be 0.67 absorbance units, using the linear regression equation provided from the plot, substitute the value of absorbance to the variable y and solve for the value of x or the concentration.

y = 3.8674x - 0.1657

0.67 = 3.8674x - 0.1657

3.8674x = 0.67 + 0.1657

3.8674x = 0.8357

x = 0.2161

Hence, the concentration is 0.2161 M.

Learn more about linear regression here: brainly.com/question/25311696

#SPJ4

6 0

1 year ago

The probability of an event is 3/10 . What are the odds of the same event?

kozerog [31]

Answer:

D. $\frac{3}{7}$

Step-by-step explanation:

We have been given that the probability of an event is 3/10.

To find the odds of the same event we will use formula:

$\text{Odds of an event}=\frac{\text{Probability of the event}}{\text{1-Probability of the event}}$

$\text{Odds of the event}=\frac{\frac{3}{10}}{1-\frac{3}{10}}$

$\text{Odds of the event}=\frac{\frac{3}{10}}{\frac{1*10}{10}-\frac{3}{10}}$

$\text{Odds of the event}=\frac{\frac{3}{10}}{\frac{10-3}{10}}$

$\text{Odds of the event}=\frac{\frac{3}{10}}{\frac{7}{10}}$

Dividing a fraction with another fraction is same as multiplying the 1st fraction by the reciprocal of second fraction.

$\text{Odds of the event}=\frac{3}{10}\times \frac{10}{7}$

$\text{Odds of the event}=\frac{3}{7}$

Therefore, the odds of the same event is $\frac{3}{7}$ and option D is the correct choice.

8 0

3 years ago

A researcher randomly surveyed two separate age groups to determine the number of hours teens spend on the Internet each week. T

Papessa [141]

The answer to this is A.

8 0

3 years ago

Read 2 more answers

16. A number has exactly 8 factors, two of which are

elena-s [515]

Answer:

1, 2, 4, 5, 8, 10, 20, 40

Step-by-step explanation:

8 0

2 years ago

Find the nth term of this sequence 7, 10, 13, 16...

Finger [1]

Answer:

3n+4 or n3+4

Step-by-step explanation:

7,10,13,16

they all have a difference of 3

so that's 3n

start with the first one: 3(1)+?=7

7-3=4

3n+4

use this for the other ones to double check

3(2)+4

6+4=10

3 0

4 years ago