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seraphim [82]
3 years ago
12

According the course handbook at a large university, the length of classes held on Monday (M), Wednesday (W), and Friday (F) hav

e a mean of 50 minutes and standard deviation of 5 minutes. The length of classes held on Tuesdays (T) and Thursdays (R) have a mean of 75 minutes and standard deviation of 7 minutes. The college provost is concerned that professors that teach classes on Tuesdays and Thursdays are dismissing their students too early. To determine if there is credibility about this concern the provost selects a random sample of 30 TR classes and 30 MWF classes and determines the length of each class. Let

Mathematics
1 answer:
taurus [48]3 years ago
7 0
It is C because it also has to require good grammar and English. Especially commas
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For which interval is the average rate of change of f(x) negative? On a coordinate plane, a function starts from above quadrant
Harlamova29_29 [7]

The interval for which the average rate of change of f(x) is negative is; from x = 0 to x = 2.5.

For the average rate of change of f(x) to be negative, it means that the change in y and the change in x must have opposite signs.

For example, if the change in y is negative, them the change in x must be positive.

Similarly, if the change in y is positive, then change in x must be negative.

Now, the graph showing this quadratic function is missing and so i have attached it.

From the graph, the only interval at which the rate of change for y and x have opposite signs is from x = 0 to x = 2.5.

In this interval, we see that x is increasing from 0 to 2.5 which is positive change while y is decreasing from 1 to -3 which is negative change.

Read more about average rate of change at;brainly.com/question/8728504

5 0
3 years ago
Solve for x! 37m,12m,5xm
dmitriy555 [2]

Answer:

\Huge\boxed{x=7}

Step-by-step explanation:

Hello there!

The first thing we want to do is find the measure of the large leg

To do so we use the Pythagorean theorem which says a^2+b^2=c^2\\

where a and b are legs and c is the hypotenuse

we want to find b given the hypotenuse and short leg

so  b^2=c^2-a^2

all we have to do is plug in a ( a = short leg so a would equal 12) and c ( c = hypotenuse so c would equal 37)

so

b^2=37^2-12^2\\37^2=1369\\12^2=144\\1369-144=1225\\b^2=1225\\\sqrt{b^2} =b\\\sqrt{1225} =35\\b=35

so the longer leg is equal to 35

35=5x

divide each side by 5

5x/5=x

35/5=7

we're left with x=7

3 0
3 years ago
Andre has 2 times as many model cars as Peter, and Peter has one-third as many model cars as Jade. Andre has 6 model cars.
attashe74 [19]

Answer:

Jade has 9 cars

Step-by-step explanation:

4 0
3 years ago
You have 90 minutes to complete atleast 18 chemistry and math problems. It takes 5 minutes to complet a chemistry problem and 4
Tcecarenko [31]
5C + 4M = 90.
C= chemistry
M=math
4 0
4 years ago
Read 2 more answers
Describe how to transform the graph of f(x) = x2 to obtain the graph of the related function g(x).
olga55 [171]

9514 1404 393

Answer:

  1. left 1 unit
  2. down 2 units

Step-by-step explanation:

The transformation g(x) = f(x -h) +k is a translation of f(x) to the right by h units and up k units.

1. h = -1, so the graph of g(x) is the graph of f(x) shifted left 1 unit. (blue)

__

2. k = -2, so the graph of g(x) is the graph of f(x) shifted down 2 units. (green)

6 0
3 years ago
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