Evaluate 3 7 r + 5 8 s 7 3 r+ 8 5 sstart fraction, 3, divided by, 7, end fraction, r, plus, start fraction, 5, divided by, 8
bazaltina [42]
Answer:
Therefore the value of given expression when r = 14 and s = 8 is
Step-by-step explanation:
Given:
To Find:
Value of above equation when r = 14 and s = 8
Solution:
.............Given
Put,
Now 7 × 2 = 14 and 8 will cancel each other we get
Therefore the value of given expression is
Answer:
The degrees of freedom are given by;
The significance level is 0.1 so then the critical value would be given by:
If the calculated value is higher than this value we can reject the null hypothesis that the arrivals are uniformly distributed over weekdays
Step-by-step explanation:
For this case we have the following observed values:
Mon 25 Tue 22 Wed 19 Thu 18 Fri 16 Total 100
For this case the expected values for each day are assumed:
The statsitic would be given by:
Where O represent the observed values and E the expected values
The degrees of freedom are given by;
The significance level is 0.1 so then the critical value would be given by:
If the calculated value is higher than this value we can reject the null hypothesis that the arrivals are uniformly distributed over weekdays
The width is x
<span>The length is x+60 </span>
<span>so x(x+60) = 16000
</span>
<span>x^2 + 60x = 16000
</span>
<span> </span>
<span>x^2 + 60x + 900 = 900+16000
</span>
<span>(x+30)^2 = 16900
</span><span> </span>
<span>x+30 = 130
</span>
<span>x = 100
So your answer is 100. </span>
I don’t know if I’m correct but:
120➗100=1.2
Which could mean that the x could be 1.2
(I’m not sure because I haven’t done this in a long time)
(Sorry if it’s wrong)
The average change in temperature in each minute would be A) -1.1ºF and B) -1.7ºF.
To A) write an expression that represents the average change in temperature each minute, and B) if Edgar repeats the experiment and finds the average change in temperature each minute is 1 ° F greater in the second trial than in the first trial, to determine what is the average change in temperature each minute in the second trial of the experiment, the following calculations must be performed:
A)
(-2 x 4 + -3 x 3 + 6) / 10 = X
(-8 + -9 + 6) / 10 = X
-11 / 10 = X
-1.1 = X
B)
(-3 x 4 + -4 x 3 + 7) / 10 = X
(-12 + -12 + 7) / 10 = X
-17/10 = X
-1.7 = X
Therefore, the average change in temperature in each minute would be A) -1.1ºF and B) -1.7ºF.
Learn more about averages in brainly.com/question/25818763
