What is an irrational number between 7.7 and 7.9
1 answer:
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Answer:
Option C. will be correct.
Step-by-step explanation:
The equations of straight lines are given as
3y - 5x = 15 ........... (1)
And, 6y - 10x = 30 ......... (2)
If we divide the equation (2), by 2 then we will get 3y - 5x = 15 which is nothing but the equation (1).
Therefore, those two equations (1) and (2) represents the same straight line.
Now, from equation (1), we can write .
This is an equation of a straight line in slope-intercept form and here slope is positive.
Therefore, Option C. will be correct. (Answer)
Answer: 0.81859
Step-by-step explanation:
Using the formula ;
Z =
where u = mean
Therefore the probability that a student will finish the test between 40 and 70 will be :
P ( 40≤X≤70 ) = P(X≤70) - P(X≤40)
P ( 60-40/10) , P( 60 - 70 / 10)
= 2 , -1
= P (Z ≤ 2) - P( Z ≤ -1 )
From normal table , we have
0.97725 - 0.15866
Therefore the probability that a student will finish the test between 40 and 70 minutes = 0.81859