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nordsb [41]
3 years ago
10

Which choice is equivalent to the expression below?

Mathematics
1 answer:
eimsori [14]3 years ago
6 0

Answer:

C

Step-by-step explanation:

We have the expression:

\sqrt{-100}

Rewriting this yields:

=\sqrt{-1\cdot100}=\sqrt{-1}\cdot\sqrt{100}=i\sqrt{100}=10i

Therefore, our answer is C.

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Suppose a normal distribution has a mean of 62 and a standard deviation of
lutik1710 [3]

Answer:

62.5%

Step-by-step explanation:

(56 - 62) / 4 = -1.5 z score = 0.0668

(64 - 62) / 4 = 0.5 z score = 0.6915

0.6915 - 0.0668 = 0.6247

Rounded this becomes 62.5%

7 0
3 years ago
How would I divide 17.28 by 7.2?
Harman [31]
You would take 17.28 ÷ 7.2=2.4
5 0
3 years ago
Marissa dug three fifths of a hole in one tenth of an hour. Find the rate<br> in holes per hour
snow_lady [41]

Answer:

Step-by-step explanation:

This might be easier to do in decimals. Let's try it.

3/5 = 0.6

1/10 = 0.1

rate = holes / hours

rate = 0.6/0.1

rate = 6 holes per hour

Try it with fractions.

rate =       \frac{\frac{3}{5} }{\frac{1}{10} }    Invert and multiply the 1/10

rate =  \frac{3}{5} *\frac{10}{1} = 30/5 = 6

It's the same answer. Pick the method that you feel most comfortable with.

3 0
3 years ago
What is the additive inverse of the polynomial –9xy2 + 6x2y – 5x3?
9966 [12]

Answer:

–9xy2 – 6x2y + 5x3

–9xy2 – 6x2y – 5x3

9xy2 + 6x2y + 5x3

9xy2 – 6x2y + 5x3

the answer is 9xy2 – 6x2y + 5x3

Step-by-step explanation:

6 0
3 years ago
Are these questions different at all? And if so whats the answer to them?
konstantin123 [22]

Answer:

i think u got it

Step-by-step explanation:

3 0
3 years ago
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