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2 years ago

5

Pls help me I give many points pls I will give the brainliest who answers first I promise Pls help me I'm soo stuck I hope :(((

its probability actually

2 answers:

zloy xaker [14]2 years ago

7 0

Step-by-step explanation:

No of prime number = 4 ( 3 , 5 , 7 , 11)

P ( prime number) = 4/12

= ⅓

Angelina_Jolie [31]2 years ago

5 0

Answer:

5/12

Step-by-step explanation:

<u>Prime numbers between1 and 12 are:</u>

2, 3, 5, 7, 11 - total of 5

<u>The probability is:</u>

P (prime) = 5/12

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3 years ago

How do I find the lateral and total surface area of the prism.

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3 years ago

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asambeis [7]

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3 years ago

What is the other square root of 119 + 120i?

MakcuM [25]

Answer:

$\sqrt{119+120 i}=\pm (12.24+i 4.90)$

Step-by-step explanation:

Given

z = 119 + 120 i

Let $\sqrt{119+120 i}=p+iq$

Squaring both sides

$119+120 i=p^2-q^2+2ipq$

Comparing real and imaginary part

Re(LHS)=Re(RHS)

$119=p^2-q^2$ ...........................(1)

comparing Im(LHS)=Im(RHS)

120=2pq

$q=\frac{60}{p}$

Substitute q in 1

$119=p^2-(\frac{60}{p})^2$

$p^4-119p^2-(68)^2=0$

Let $x=p^2$

$x^2-119x-4624=0$

$x=\dfrac{119\pm \sqrt{119^2+4\times 4624}}{2}$

$x=\frac{119\pm 180.71}{2}$

we take only Positive value because $p^2=x$

x=149.85

$p^2=149.85$

thus $p=\pm 12.24$

$q=\pm 4.90$

thus,

$\sqrt{119+120 i}=\pm (12.24+i 4.90)$

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3 years ago

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3 years ago

Read 2 more answers