2 years ago

The information below describes a data plan for a storage device.

Mathematics

1 answer:

Vesna [10]2 years ago

3 0

Answer

A) C=5+2d

Step-by-step-explanation

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snow_tiger [21]

You take 190 and divide it by 38 = 5 gallons

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Please help my solve this problem. :(

solniwko [45]

The answer would be 90

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AB is perpendicular to CD. If the slope of AB is 2/5, what is the slope of CD?

alekssr [168]

Given a slope $m$ , the slope $m'$ of a line perpendicular to $m$ is the opposite of the inverse of $m$

In other words:

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2 years ago

12 is he 60 % of this number

ioda

Answer:

Step-by-step explanation:

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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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2 years ago