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KIM [24]
3 years ago
9

Conduct a chi-squared test of independence on the data presented in data set

Mathematics
1 answer:
Novay_Z [31]3 years ago
4 0
What's a chi-squared?
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What is the vertex?? Please answer QUICK!
astra-53 [7]

Answer:

D

Step-by-step explanation:

To obtain vertex form from the given equation use the method of completing the square

given 8y + x² = - y² - 181 + 26x

rearrange having the x terms and y terms together

add y² to both sides

8y + x² + y² = - 181 + 26x ( subtract 26x from both sides )

x² - 26x + y² + 8y = - 181

add (half the coefficient of the x/y terms )² to both sides

x² + 2(- 13)x + 169 +y² + 2(4)y + 16 = - 181 + 169 + 16

completing the square on both the x and y terms

(x - 13)² + (y + 4)² = 4 → D


5 0
2 years ago
Find f(-3) for f(x) =3x+2<br> a. -11<br><br><br> b. -7<br><br><br> c. -9<br><br><br> d. 1
Sergeu [11.5K]
B. -7
The answer all comes down to you getting -7/f. 
Hope I helped!
3 0
3 years ago
Read 2 more answers
If the following fractions were converted to decimals, which one would result in a repeating decimal?
Sveta_85 [38]
B. 3/7
...................
4 0
3 years ago
Read 2 more answers
When a certain tree was first planted, it was 4 feet tall, and the height of the tree increased by a constant amount each year f
MA_775_DIABLO [31]

Answer:

Option D is the correct answer.

Step-by-step explanation:

Initial height = 4 feet

Given that the height of the tree increased by a constant amount each year for the next 6 years. At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

Let the rate of growing each year be g.

After 6 years height of tree = 4 + 6g

After 4 years height of tree = 4 + 4g

At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

That is

                4+6g=4+4g+\frac{4+4g}{5}\\\\4+6g=\frac{20+20g+4+4g}{5}\\\\20+30g=24+24g\\\\6g=4\\\\g=\frac{2}{3}ft/year

Option D is the correct answer.    

8 0
3 years ago
Which set of ordered pairs does not represent a function?
Solnce55 [7]

Answer: The last

Step-by-step explanation: 2 of the x values are the same

6 0
10 months ago
Read 2 more answers
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