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Margaret [11]
3 years ago
7

Simplify the imaginary number sqr -75

Mathematics
1 answer:
m_a_m_a [10]3 years ago
3 0

Answer:

5i\sqrt{3}

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab}

and \sqrt{-1} = i

Given

\sqrt{-75}

= \sqrt{25(3)(-1)}

= \sqrt{25}  × \sqrt{3} × \sqrt{-1}

= 5 × \sqrt{3} × i

= 5i\sqrt{3}

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Express 0.88 as a percent
Alekssandra [29.7K]

Answer:

88%

Step-by-step explanation:

0.88*100=88%

5 0
3 years ago
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melisa1 [442]

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4 0
3 years ago
Can someone help with that?<br><br>if x+y=2, calculate: <br>P=4x (x-3)+4y(y-3)+8xy​
olganol [36]

Answer:

Step-by-step explanation:

P = 4x(x - 3) + 4y(y - 3) + 8xy

  = 4x² - 12x + 4y² - 12y + 8xy

  = (4x² + 8xy + 4y²) - (12x + 12y)

 = 4(x² + 2xy + y²) - 12(x + y)

 = 4(x + y)² - 12(x + y)

x+y =2 ⇒ P = 4.2² - 12.2 = 16 - 24 = -8

6 0
3 years ago
Please help<br> 1. f(x)=3(2)^x<br> 2. f(x)=2(3)^x<br> 3. f(x)=3(1/2)^x<br> 4. f(x)=2(1/3)^x
stellarik [79]

Answer:

C. f(x)=3(1/2)^x

Step-by-step explanation:

standard form of a function is f(x)=ab^x

a should be 3, or the y value where the x value is 0

the b value is 1/2 because that's the rate of change

8 0
3 years ago
How do you solve -3(2x-2)-5(3x+3)=3
stepan [7]
The answer is -4/7
First, you distribute the -3 and -5 through the parentheses.
-6x+6-15x-15=3
Then combine like terms
-21x-9=3
Do opposite operation
9+3=12
That leaves
-21x=12
Divide both side by -21
X= -4/7
8 0
3 years ago
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