Answer:
c.My grade is 0.87 standard deviations above the mean.
Step-by-step explanation:
given that the z-score of your grade on this Statistics exam turns out to be z=0.87.
Z score is nothing but std normal variate
Any normal distribution can be converted into std normal by the transformation
Z = 
Thus when z=0.87 we mean
x = Mean +0.87 sigma
Or my grade is 0.87 std deviations above the mean
Hence option C is right.
c.My grade is 0.87 standard deviations above the mean.
And m\angle B=(8x+28)^{\circ}∠B=(8x+28)
Answer:
a
Step-by-step explanation:
the total cost is 2.50$/m
Step-by-step explanation:
Hey, there!!

By cross multiplication,



Therefore, x= -35.
<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
20+8=28
16+12=28...
are thus enough