3 years ago

Yo lets play among us!!

Mathematics

2 answers:

lys-0071 [83]3 years ago

7 0

Answer:

Yo, thats one of my fav games...

ur sus

LOL

seropon [69]3 years ago

4 0

Answer:

yass dude lets go

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Five times the sum of a number and 4 is -15

kicyunya [14]

5(x+4)=-15

Distribute
5x+20=-15

Subtract 20 from both sides
5x=-35

Divide both sides by 5
x=-7

Final answer: The number is -7

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Answer:

Step-by-step explanation:

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4 years ago

Calculate an estimate of a square root of 119 + 120i

uysha [10]

Answer:

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 $x=p^2$

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

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

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

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

x=149.85

$p^2=149.85$

thus $p=\pm 12.24$

$q=\mp 4.90$

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

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4 years ago