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icang [17]
3 years ago
13

I don't know if it's correct​

Mathematics
1 answer:
Bond [772]3 years ago
8 0

Hello, This is correct.

first one is whole numbers

the third one natural numbers

the fourth are complex numbers

The last one is irrational numbers

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Simplify the following expression (3x^2y)^3
kolezko [41]

Answer:

\large\boxed{\left(3x^2y\right)^3=27x^6y^3}

Step-by-step explanation:

\text{Use}\ (ab)^n=a^nb^n\ \text{and}\ (a^n)^m=a^{nm}\\\\\left(3x^2y\right)^3=3^3(x^2)^3y^3=27x^6y^3

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3 years ago
Given f (x) = 2x^2 -3x + 5, find f (-4)
bogdanovich [222]
-1=x is the answer I’m pretty sure
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3 years ago
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Where are white blue and red boat in the Marina three fourths of the boats in the Marina are white for seventh of the remaining
xeze [42]

Answer:

28

Step-by-step explanation:

Here is the complete question used in answering this question :

Three-fourths of the boats in the marina are white. 4/7 of the remaining boats are blue , and the rest are red . If there are 9red boats, how many boats are in the marina?

We first have to determine the fraction of the boats that are red

1 - (\frac{3}{4} + \frac{4}{7})

1 - \frac{21 + 16}{28}

1 - \frac{37}{28}

1 - 1\frac{9}{28}

= 9/28

so, 9/28 of the boats are red

let b represent the total number of boats

9/28 x b = 9

to find b, divide both sides of the equation by 28/9

b = 28

5 0
3 years ago
Given the function below, if f(x) = -1, find
dmitriy555 [2]

Answer:

x = -3

Step-by-step explanation:

f(x) = 4x + 11

f(x) = -1

Substitute -1 for f(x)

-1 = 4x + 11

Subtract 11

-12 = 4x

Divide by 4

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6 0
2 years ago
Find the area of a circle whose radius is<br> 52 km. Round to nearest tenth
goblinko [34]

Answer:

8494.87 is the actual answer but the rounded version is 8494.9

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3 years ago
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