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nika2105 [10]
3 years ago
7

Which equation matches the graph of the greatest integer function given

Mathematics
1 answer:
QveST [7]3 years ago
5 0
The answer is A. y = [x] -2
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The mean GPA of students in a
mihalych1998 [28]

Answer:

50% of students have a GPA  higher than 3.1.

Step-by-step explanation:

We are given that the mean GPA of students in a  neighboring school is 3.1 with a  standard deviation of 0.3.

Assuming that the data follows normal distribution.

<u><em>Let X = GPA of students in a  neighboring school</em></u>

So, X ~ Normal(\mu=3.1,\sigma^{2} =0.3^{2})

The z score probability distribution for normal distribution is given by;

                               Z  = \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = population mean GPA = 3.1

           \sigma = standard deviation = 0.3

Now, the probability that the students have a GPA  higher than 3.1 is given by = P(X > 3.1)

        P(X > 3.1) = P( \frac{X-\mu}{\sigma} > \frac{3.1-3.1}{0.3} ) = P(Z > 0) = 0.50

<em>The above probability is calculated by looking at the value of x = 0 in the z table which has an area of 0.50.</em>

Therefore, 50% of students have a GPA  higher than 3.1.

7 0
3 years ago
Solve for (x) <br> I need help with 10(b) <br> Please
Shalnov [3]

Answer:

x = 4

Step-by-step explanation:

(b)

\frac{2x+1}{3} = 5 - \frac{1}{2} x

Multiply through by 6 ( the LCM of 3 and 2 ) to clear the fractions

2(2x + 1) = 30 - 3x , distribute parenthesis on left side

4x + 2 = 30 - 3x ( add 3x to both sides )

7x + 2 = 30 ( subtract 2 from both sides )

7x = 28 ( divide both sides by 7 )

x = 4

3 0
3 years ago
What is 2+2 (Hint is not 4)
DanielleElmas [232]

Answer:

5...?

Step-by-step explanation:

6 0
3 years ago
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Help me please I can use it so hook it up !!
pogonyaev
The answer to the question is D. It took me so long cuz' my phone died. *sry*
3 0
3 years ago
PLEASE HELP ME!!!!!!!!! (100 points)
velikii [3]

Answer:

Domain [2,5)

Range (-6,18]

Step-by-step explanation:

Domain is shifted 2 units to the right because of the horizontal shift so it is [2,5)

Range is multiplied by 3 because of the vertical stretch so it is (-6,18]

6 0
4 years ago
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