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Novay_Z [31]
3 years ago
5

What function is a quadratic function

Mathematics
2 answers:
Nikolay [14]3 years ago
5 0
The answer is d or the last one
alina1380 [7]3 years ago
3 0
I think it's the first one 
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Please answer correctly !!!! Will mark brainliest !!!!!!!!
Pavel [41]

Answer: (x + 3)(x + 3)

6 0
3 years ago
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Marissa rode her bike to the park and back home. She lives 2 3/10 miles from the park. How many miles did Marissa ride her bike
Dovator [93]
2\frac{3}{10} +2\frac{3}{10} =\frac{(2\times10)+3}{10}+\frac{(2\times10)+3}{10} =\frac{20+3}{10}+\frac{20+3}{10}\\\\=\frac{23}{10} +\frac{23}{10} =\frac{23+23}{10} =\frac{46}{10} =4\frac{6}{10} =\boxed{\bf{4\frac{3}{5}}}

Marissa rode 4 3/5 miles in all.
5 0
3 years ago
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Consider the following sample set of scores. Assume these scores are from a discrete distribution. 21 29 32 38 38 45 50 64 72 10
ASHA 777 [7]

Answer:

Original data: 21 29 32 38 38 45 50 64 72 100

\bar X = \frac{21+29+32+38+38+45+50+64+72+100}{10}=48.9

Mode =38.

Median = \frac{38+45}{2}=41.5

Change 1: 2 29 32 38 38 45 50 64 72 100

\bar X = \frac{2+29+32+38+38+45+50+64+72+100}{10}=47

Mode =38.

Median = \frac{38+45}{2}=41.5

Change 2: 29 32 38 38 45 50 64 72 100

\bar X = \frac{29+32+38+38+45+50+64+72+100}{9}=52

Mode =38.

Median = 45

Step-by-step explanation:

Original data: 21 29 32 38 38 45 50 64 72 100

The mean is calculated with the following formula:

\bar X = \frac{\sum_{i=1}^{10} X_i}{10}

And if we replace we got:

\bar X = \frac{21+29+32+38+38+45+50+64+72+100}{10}=48.9

The mode is the most repeated value in the sample and on this case is Mode =38.

Since we have an even number of points the median is calculated as the average between the observations 5 and 6 from the dataset ordered.

Median = \frac{38+45}{2}=41.5

Change 1: 2 29 32 38 38 45 50 64 72 100

The mean is calculated with the following formula:

\bar X = \frac{\sum_{i=1}^{10} X_i}{10}

And if we replace we got:

\bar X = \frac{2+29+32+38+38+45+50+64+72+100}{10}=47

The mode is the most repeated value in the sample and on this case is Mode =38.

Since we have an even number of points the median is calculated as the average between the observations 5 and 6 from the dataset ordered.

Median = \frac{38+45}{2}=41.5

Change 2: 29 32 38 38 45 50 64 72 100

Now the sample size is 9 instead of 10

The mean is calculated with the following formula:

\bar X = \frac{\sum_{i=1}^{9} X_i}{9}

And if we replace we got:

\bar X = \frac{29+32+38+38+45+50+64+72+100}{9}=52

The mode is the most repeated value in the sample and on this case is Mode =38.

Since we have odd number of points the median is calculated from the 5 position of the dataset ordered.

Median = 45

7 0
4 years ago
The table below shows function r, which represents the total cost of a field trip to the science museum, in dollars, if n studen
mafiozo [28]

The answer has to be A) r(n) = 15n +55, as when n=0, r(n)=55 so the equation must end with +55.

3 0
4 years ago
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What is the coefficient of the variable in the expression 6 − 4x − 8 + 2?
Anton [14]
The coefficient is the number multiplied by the variable (letter)....so ur coefficient is - 4
6 0
3 years ago
Read 2 more answers
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