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Vsevolod [243]
3 years ago
12

Please Help Can someone explain where the 4i to the square root of 3 came from?

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

note that \sqrt{-1} = i

\sqrt{64-112}

= \sqrt{-48}

= \sqrt{16(3)(-1)}

= \sqrt{16} × \sqrt{3} × \sqrt{-1}

= 4 × \sqrt{3} × i

= 4i\sqrt{3}

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Please help i will mark brainliest!​
GuDViN [60]

Answer:

Cluster Sampling

Step-by-step explanation:

I cant be 100% sure as i am not in statistics, but by definition cluster sampling is a probability sampling technique where researchers divide the population into multiple groups (clusters) for research (in this case its the phone book). Researchers then select random groups (three random pages) with a simple random or systematic random sampling technique for data collection and data analysis(interviews).

so that appears to be what is happening in this scenario.

6 0
3 years ago
Which property was used to solve the given inequality?
Amiraneli [1.4K]

Subtraction Property of Inequality is used to solve the given inequality

<em><u>Solution:</u></em>

Given inequality is:

y + 8 < - 8

To solve the inequality, subtract 8 on both sides,

We know that,

Adding or subtracting the same quantity from both sides of an inequality leaves the inequality symbol unchanged

Also, by Subtraction Property of Inequality,

If you minus a number from one side of an inequality, you have to minus that same number from the other side of the inequality as well

y + 8 < - 8\\\\\text{Subtract 8 from both sides of inequality }\\\\y + 8 - 8 < -8  - 8\\\\simplify,\\\\y

Thus, Subtraction Property of Inequality is used

4 0
3 years ago
Ariel made 108 cupcakes. If 32 of them are chocolate, what percent of the cupcakes are vanilla?
Leni [432]

Answer:

About 70%

Step-by-step explanation:

Subtract the number of chocolate cupcakes from the total cupcakes.

108-32=76

76 cupcakes are vanilla.

Divide 76/108

76/108

70.3%

About 70% of the cupcakes are vanilla.

(I don't know if you are allowed to use a calculator in your class, but I did)

8 0
2 years ago
M∠3 + m∠6 =180° True or False?
Natali5045456 [20]

Answer:

False. Because it is the answer.

8 0
3 years ago
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The diameter of a circle is 9 ft. Find the circumference and round it to the nearest tenth.
marta [7]

Answer:

9*3.14=28.26

Step-by-step explanation:

Hope this Helps!

6 0
2 years ago
Read 2 more answers
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