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Mkey [24]
3 years ago
15

The chord XY is a diameter of of O. True or false?

Mathematics
2 answers:
vlada-n [284]3 years ago
6 0

Answer:

False, XY is not a diameter

Step-by-step explanation:

To be a diameter, it must go through the center of the circle, which is point O

The chord XY does not pass through the point O, so XY cannot be a diameter

steposvetlana [31]3 years ago
3 0

Answer:

False

Step-by-step explanation:

XY is the diameter of the circle with the centre of this circle being O.

But O on it's own is just a coordinate, and not the circle.

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The correlation coefficient between two quantitative variables is approximately 0.6. What does the value of this correlation coe
murzikaleks [220]

Answer:

The model does not fits the data well.      

Step-by-step explanation:

Correlation:

  • Correlation is a technique that help us to find or define a relationship between two variables.
  • It is a measure of linear relationship between two quantities.
  • A positive correlation means that an increase in one quantity leads to an increase in another quantity
  • A negative correlation means with increase in one quantity the other quantity decreases.

R-square, R^2

  • The quantity R-squared is an indicator of the predictive power of a model.
  • It explains the variation in the dependent variable due to independent variable.
  • It shows how well the model fits the data.
  • R-squared is also known as the  coefficient of determination.

R^2 = \text{(Correlation coefficient)}^2= (0.6)^2 = 0.36 = 36\%

Therefore, only 36% of the variations in the dependent variable is explained by the independent variable in the model which means more than 50% of variation cannot still be explained in the dependent variable.

Hence, the model does not fits the data well.

8 0
3 years ago
What’s the answer????
barxatty [35]

Answer:

i dont know if u know the equation for volume but it is length times width times height SO you would multiply 8.25 times 3 times 5

5 times 3 is 15 so u then multiply 8.25 times 15

sorry if u wanted the full answer

4 0
3 years ago
Simplest form of 4500:80000 and 8100:144000​
a_sh-v [17]

9514 1404 393

Answer:

  • 9/160
  • 9/160

Step-by-step explanation:

Divide each number in the ratio by their greatest common divisor.

  4500 : 80000 = (4500/500) : (80000/500) = 9 : 160

  8100 : 144000 = (8100/900) : (144000/900) = 9 : 160

3 0
3 years ago
Round to the nearest hundredth if so. Use 3.14 as pi <br>8. r=<br> d =<br> C=78.8 ft​
Kryger [21]

Answer: The radius is 12.54 feet, and the diameter is 25.08 feet.

Explanation: By applying the circumference into the equation r = \frac{C}{2\pi }, we get r = \frac{78.8}{2\pi }which simplifies the radius. And since radius is half of diameter, we multiply by 2 to get the diameter as well to solve the other blank in the problem.

Hope this helps! :D

7 0
3 years ago
The resale value of a certain car decreases over time. Use the line of best fit to estimate what the car will be worth in 7 year
Pie

Answer:

C. $5500

Step-by-step explanation:

Find the point on the horizontal scale where Time is 7. Follow that line up to the red "line of best fit". Then follow that horizontally to see where it falls on the Resale Value scale. It is between 5 and 6 (thousands of dollars) on that scale.

The only answer choice that is between $5000 and $6000 is ...

C. $5500

4 0
3 years ago
Read 2 more answers
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