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3 years ago

The sum of two numbers is 60 and the difference is 10 . What are the numbers?

Mathematics

1 answer:

Furkat [3]3 years ago

4 0

Answer:

35 and 25.

Step-by-step explanation:

x+y=60

x-y=10

Subtract eq1 by eq2

x-x+y-(-y) = 60-10

2y=50

y=25.

x+25=60

x=35

Hope this helps :D

#Team Rainbows

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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)

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Substitute q in 1

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

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Let $x=p^2$

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

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

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$p^2=149.85$

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