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zzz [600]
3 years ago
9

Need help with z-scores

Mathematics
2 answers:
zysi [14]3 years ago
6 0

hope this helps b.0.8937

ira [324]3 years ago
5 0

You need to look up the areas corresponding to the z-scores on a Standard Normal Distribution table.  Using a table which gives areas to the LEFT of the z-score  we work out the above shaded region area as follows

area = area to left for  z score 0.85 - area to left for z score -1.2

= 0.8023 -  0.1151 = 0.6827

Its Option D.

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A student divided 10 meters of wire into 6 equal parts. Which type of number describes the length of each part?
Kobotan [32]

When 10 meters of something is divided into 6 equal parts,
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A).  Whole number . . . No, that's not a whole number

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C).  Rational number . . . Yes, its the ratio of  10,000 to  6 .

D).  Irrational number . . . No, it's not irrational.


8 0
3 years ago
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Halppppppppppppppppppp​
Hatshy [7]

Answer:

Yes

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y\leq 3x+9\\\\8\leq 3(7)+9\\\\8\leq 21+9\\\\8\leq 30

Yes, the given point makes the inequality true. We end up with a true statement.

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4 0
3 years ago
If the starting time is 7:43 and the elapsed time is 36 minutes then what time what is the ending time
Annette [7]

Answer:

8:19

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6 0
3 years ago
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What is the expression in radical form?
RoseWind [281]

Answer:

The answer is;

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Step-by-step explanation:

We want to express the expression in the bracket in radical form;

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What we shall do here is to multiply all the powers of the terms in the bracket by 3/10

So we shall have;

4^3/10 • x^(3*3/10) * y^(2*3/10)

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3 0
3 years ago
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The answer for:

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3 years ago
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