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Free_Kalibri [48]
3 years ago
10

Nina knows that the average of the x-intercepts represents the line of symmetry for a quadratic function through the x-axis. Whi

ch equation represents the average of the x-intercepts for f(x) = 4x2 – 24x + 20?
Mathematics
1 answer:
amid [387]3 years ago
5 0

Answer:the correct answer is c

Step-by-step explanation:

You might be interested in
The average student-loan debt is reported to be $25,235. A student believes that the student-loan debt is higher in her area. Sh
yulyashka [42]

Answer:

Step-by-step explanation:

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

µ = 25235

For the alternative hypothesis,

µ > 25235

This is a right tailed test.

Since the population standard deviation is not given, the distribution is a student's t.

Since n = 100,

Degrees of freedom, df = n - 1 = 100 - 1 = 99

t = (x - µ)/(s/√n)

Where

x = sample mean = 27524

µ = population mean = 25235

s = samples standard deviation = 6000

t = (27524 - 25235)/(6000/√100) = 3.815

We would determine the p value using the t test calculator. It becomes

p = 0.000119

Since alpha, 0.05 > than the p value, 0.000119, then we would reject the null hypothesis. There is sufficient evidence to support the claim that student-loan debt is higher than $25,235 in her area.

6 0
3 years ago
Whats 1+1 please help
GREYUIT [131]

Answer:

Two haha

Step-by-step explanation:

but thanks for the points (:

8 0
3 years ago
Read 2 more answers
If f(x) = x2 + 1 and g(x) = x – 4, which value is equivalent to (f circle g) (10)? 37 97 126 606
ahrayia [7]

Answer:  its 37

Step-by-step explanation:

its 37

6 0
3 years ago
Read 2 more answers
A piece of green rope is being used to make a border around the outside of a sculpture that is in the shape of an equilateral tr
damaskus [11]

Answer:

The equivalent expressions are;

9x + 9

and

9(x + 1)

Step-by-step explanation:

Mathematically, we should understand that an equilateral triangle has all of its sides equal

So if one side is 3x+ 3, the other sides too measures same

Therefore, the length of the rope represents the perimeter of the triangle

This is obtainable by adding all the side lengths together

This will be;

3x + 3 + 3x + 3 + 3x + 3 = 9x + 9

This is also same as 9(x + 1)

5 0
3 years ago
HELP!!!!!:
Hatshy [7]

There are a total of 10 + 4 = 14 kg of syrup.

4 out of the 14 kg are sugar so the percentage is:

4/14 = 28.6%

Edit: The answer is correct. I don’t know why it was flagged as incorrect.

The total amount of ingredients in the syrup is 14 kg. Of the 14 kg, 4 kg is composed of sugar. So, 4 kg of sugar divided by the 14 kg of total weight will give you the percentage of sugar.

4/14 = 0.285714285714286

With an additional significant figure, the answer is 28.57%

7 0
3 years ago
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