Correct Answer:Option A. 0.01
Solution:This is a problem of statistics and uses the concept of normal distributions. We need to convert the score of 90 into z-score and then find the desired probability from standard normal distribution table.
Converting 90 to z-score:
Now we are to find the probability of z score being more than 2.33. From the z-table the probability comes out to be 0.01.
Therefore, we can conclude that the probability of class average is greater than 90 is 0.01.
The 2-point form of the equation of a line is
.. y = (y2 -y1)/(x2 -x1)*(x -x1) +y1
For your points (x1, y1) = (0, 3) and (x2, y2) = (3, 5), this is
.. y = (5 -3)/(3 -0)*(x -0) +3
.. y = (2/3)x +3
Written as a function, it is
.. f(x) = (2/3)x +3
Answer:
Step-by-step explanation:
2X+4)+(2X+4)+X+X=38
Lets add our X's and then add our whole numbers. 6X+8=38
Lets work our sentence by subtracting 8 from each side of the equal sign.
6X+8–8=38–8
6X=30
Lets divide each side by 6.
6X/6=30/6
X=5 now lets prove 5 is X.
(2×5+4)+(2×5+4)+5+5=38
(14)+(14)+5+5=38
28+10=38
38=38
X is equal to 5.
Answer:
y=4x+1
Step-by-step explanation:
i hope this helps :)
Answer:
y = -3x + 17
Step-by-step explanation:
first, change the equation into slope-intercept form
add 'x' to each side to get:
3y + x = 12
divide each side by 3 to get:
y = 1/3x + 4
now we need to use a slope that is the opposite reciprocal of 1/3 which would be -3, in conjunction with the point (5,2), by entering these values into the slope-intercept form so we can find the y-intercept ('b') of the new line:
2 = -3(5) + b
2 = -15 + b
17 = b
put slope and y-intercept together to get:
y = -3x + 17