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3 years ago

Which expression is rational? A. 4.121221222… B. square root of 36 C. square root of 21 D. 1.192744502…

Mathematics

1 answer:

Sati [7]3 years ago

4 0

Answer: 2

Step-by-step explanation:

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Please help with at least one question.

Cloud [144]

Okay, first off negative is well negative and since there is no other negatives, -5/7 is least (making it go first). Second, what is smaller 3/5 or 2/9, remember that the bigger the denominator the smaller the piece.

[/] [/] [/] [] [] = 3/5

[/] [/] [] [] [] [] [] [] [] 2/9

At the end it should be -5/7, 2/9 , 3/5. This method can go the same for problems like these...Hope it helps!

7 0

3 years ago

A normal distribution has a mean 20 and standard deviation 5. What is the z score that corresponds to the value x=222

sashaice [31]

Answer: The z score that corresponds to the value x=22 is 0.4 .

Step-by-step explanation:

Given : A normal distribution has a mean 20 and standard deviation 5.

i.e. $\mu=20$

$\sigma=5$

Let x be the random selected variable.

We know that to find the z-score corresponds to the value x is given by :-

$z=\dfrac{x-\mu}{\sigma}$

For x = 22, we have

$z=\dfrac{22-20}{5}=\dfrac{2}{5}\\\\\Rightarrow\ z=0.4$

Hence, the z score that corresponds to the value x=22 is 0.4

5 0

3 years ago

If the lines A and B are parallel then find the value of x

Tasya [4]

Answer:

Step-by-step explanation:

7 0

3 years ago

16 is 10% of what number

marusya05 [52]

let's say is 16% of "x", meaning "x" is the 100%.

we know "x" is 100% and 16% of it is 10, so

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 16&10 \end{array}\implies \cfrac{x}{16}=\cfrac{100}{10}\implies \cfrac{x}{16}=10\implies x = 160$

6 0

3 years ago

Read 2 more answers

Find the midpoint M of the line segment joining the points S = (-5, -3) and T = (-1, 7).

Sergeeva-Olga [200]

Answer:

Midpoint M: (-3, 2)

7 0

2 years ago