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4 years ago

What is the z score

Mathematics

1 answer:

joja [24]4 years ago

6 0

Step-by-step explanation:

z = (x − μ) / σ

z = (65 − 69) / 3.5

z = -1.14

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miss Akunina [59]

Yes it has the same value

They are exponents so it would be 8 times (4*4) + (2*2*2*2)

The exponent is how many times u multiple itself

4 0

3 years ago

If you place a 29-foot ladder against the top of a 20-foot building, how many feet will the bottom of the ladder be from the bot

mr_godi [17]

Answer:

Step-by-step explanation:

3 0

4 years ago

What is the greatest common factor of 42a5b3, 35a3b4, and 42ab4?

tiny-mole [99]

For this case we have that by definition, the Greatest Common Factor (GCF) is the largest factor that 2 numbers have in common.

So, we have the following expressions:

$42a ^ 5b ^ 3\\35a ^ 3b ^ 4\\42ab ^ 4$

We look for the positive integers that divide to 35 and 42 without leaving residue:

42: 1,2,3,6,7,14,21

35: 1,5,7

Thus, the GCF of 42 and 35 is 7

Then, the GCF of the three expressions is:

$7ab ^ 3$

Answer:

$7ab ^ 3$

4 0

3 years ago

What is the equation of a line parallel to the y axis and passing through the point (2,1)?

Burka [1]

Answer:

x = 2

Step-by-step explanation:

lines parallel to the y-axis are always vertical and begin with 'x ='

7 0

3 years ago

Read 2 more answers

How do I even start this? And how to i order the equation to solve

Kobotan [32]

$f(g(h(x)))=f(g(\sqrt x))=f(\sqrt x-1)=\boxed{(\sqrt x-1)^4+4}$

This is because

$h(x)=\sqrt x$

$g(x)=x-1$

$\implies g(h(x))=\sqrt x-1$

(that is, replace any instance of x in the definition of g with √x )

and

$f(x)=x^4+4$

$\implies f(\sqrt x-1)=(\sqrt x-1)^4+4$

(replace any x in f with √x - 1)

Also acceptable:

$(\sqrt x-1)^4+4=((\sqrt x)^4-4(\sqrt x)^3+6(\sqrt x)^2-4\sqrt x+1)+4$

$=\boxed{x^2-4x\sqrt x+6x-4\sqrt x+5}$

(assuming x is not negative)

6 0

3 years ago