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DiKsa [7]
3 years ago
7

Word problem

Mathematics
1 answer:
nordsb [41]3 years ago
6 0

Answer:

The answer is T = 25

Step-by-step explanation:

Hope this helps

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Percentage grade averages were taken across all disciplines at a particular university, and the mean average was found to be 83.
Georgia [21]
Correct Ans:
Option A. 0.0100

Solution:
We are to find the probability that the class average for 10 selected classes is greater than 90. This involves the utilization of standard normal distribution.

First step will be to convert the given score into z score for given mean, standard deviation and sample size and then use that z score to find the said probability. So converting the value to z score:

z-score= \frac{90-83.6}{ \frac{8.7}{ \sqrt{10} } } \\  \\ 
z-score =2.326

So, 90 converted to  z score for given data is 2.326. Now using the z-table we are to find the probability of z score to be greater than 2.326. The probability comes out to be 0.01.

Therefore, there is a 0.01 probability of the class average to be greater than 90 for the 10 classes.
5 0
3 years ago
I need help with this someone explain please fractions math
Nookie1986 [14]

[deleted due to wrong answer]

5 0
3 years ago
What is the slope of the line passing through the points (0,0),(1/3,7/3)?
umka21 [38]
(0,0)(1/3,7/3)

slope = (7/3 - 0) / (1/3 - 0) = (7/3) / (1/3) = 7/3 * 3 = 21/3 = 7 <==
8 0
3 years ago
in the morning , Emily studied 40 minutes for an exam. Later that evening, Emily studied for x more minutes. write an equation t
julia-pushkina [17]

Answer:

40 + x = y

Just use the variables given to make an equation.

3 0
3 years ago
Read 2 more answers
3x + 7y = 21 –3x – 7y = 42<br> Solve the system of equations?
likoan [24]

9514 1404 393

Answer:

  no solution

Step-by-step explanation:

The equations describe parallel lines. There are no values of x and y that will satisfy both equations.

In standard form, the two equations are ...

  3x +7y = 21

  3x +7y = -42 . . . . . with positive leading coefficient

If (x, y) values satisfy the first equation, they cannot satisfy the second equation, and vice versa.

8 0
3 years ago
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