Answer:
They are
Step-by-step explanation:
AA congruency theorem
AA is angle angle
The picture gives (( so that measns that (( and (( are congruent angles. The same with the (, it. is congruent to the other (.
What do you need help with ?
Answer:
96 m^2
Step-by-step explanation:
The formula for finding the surface area of a cube is 6a^2 where a is a side length.
When you input the given value into the formula you get 6 x 4^2
When you solve that formula, you get 96
Please mark as brainliest ;)
<u>Answer-</u>
Correlation coefficient for the data in the table was found to be 0.93.
<u>Solution-</u>
Taking the independent variable or input variable as, the time a patient spends at the dentist and the dependent variable or output variable as the amount of the bill.
We know that,
![r=\frac{n(\sum xy)-\sum x \sum y}{\sqrt{[n\sum x^{2} -({\sum x})^{2}]\times [n\sum y^{2} -({\sum y})^{2}]}}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7Bn%28%5Csum%20xy%29-%5Csum%20x%20%5Csum%20y%7D%7B%5Csqrt%7B%5Bn%5Csum%20x%5E%7B2%7D%20-%28%7B%5Csum%20x%7D%29%5E%7B2%7D%5D%5Ctimes%20%5Bn%5Csum%20y%5E%7B2%7D%20-%28%7B%5Csum%20y%7D%29%5E%7B2%7D%5D%7D%7D)
Calculating the values from the table, then putting it in the formula
![r=\frac{4 \times 3130.9 \ - \ 6.45 \times 1473}{\sqrt{[4\times 12.3725 \ - \ 6.45^{2}][4 \times 877475 \ - \ 1473^2]}}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B4%20%5Ctimes%203130.9%20%5C%20-%20%5C%206.45%20%5Ctimes%201473%7D%7B%5Csqrt%7B%5B4%5Ctimes%2012.3725%20%5C%20-%20%5C%206.45%5E%7B2%7D%5D%5B4%20%5Ctimes%20877475%20%5C%20-%20%5C%201473%5E2%5D%7D%7D)
∴ Correlation coefficient for the data is 0.93.
Answer:
1. 1/4 (3÷3 is 1, 12÷3 is 4)
2. 4:1 (16÷4 is 4, 4÷4 is 1)
3. 3/5 (6÷2 is 3, 10÷2 is 5)
4. 2:3 (8÷4 is 2, 12÷4 is 3)
5. 1/3 (3÷3 is 1, 9÷3 is 3)
6. 1/10 (2÷2 is 1, 20÷2 is 10)
7. 1:2 (2÷2 is 1, 4÷2 is 2)
8. 3:1 (18÷6 is 3, 6÷6 is 1)
