The scores on a test are normally distributed. The mean of the test is 750 and the standard deviation is 70. By using the Empiri
cal rule, what scores fall 3 standard deviations from the mean?
a.610 and 820 b.610 and 960 c.680 and 820 d.540 and 960
1 answer:
I think it will be B 610 and 820 but im not sure.
Hope This Helps!
~Cupcake
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Ratio of boys to girls = 1 : 3
Unknown constant = x
x + 3x = 24
4x = 24
x = 6
No. of girls = 3 x 6 = 18
Y=kx
-5=k(15)
-5/15=k
-1/3=k
now,
y=-1/5x
3=-1/5x
3×5=-1(x)
15=-1(x)
multiplying both sides by -1,we get
-15=x
Answer:
Step-by-step explanation:
The question can be written out like this:
36 = 0.009x
Multiply both sides by 1,000:
9x = 36,000
Divide both sides by 9:
x = 4,000
Answer:
they cost 13.86666666666667
Step-by-step explanation:
