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3 years ago

15

Which ordered pair is a solution of the equation? 2 + 3y 10 Choose 1 answers Only A (2.2) B Only (13) C Both (2, 2) and (1.3) D

Neither

1 answer:

Sonbull [250]3 years ago

4 0

Answer:

Step-by-step explanation: only (2,2)

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Multiply:<br> x (x^2+2x+4) and -2 (x^2+2x+4)<br><br> Combine like terms.<br><br> Final Answer:

natulia [17]

Answer:

x^3-8

Step-by-step explanation:

x^3+2x^2+4x + -2x^2-4x-8

+2x^2 and -2x^2 cancel out

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3 years ago

What is the slop of line n

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For line n, m=1/2

Step-by-step explanation:

The line goes up 1 for every 2 to the right.

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3 years ago

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2.5 kg of potatoes is £1.40<br> What is the cost of 4.25

Kobotan [32]

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2 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

50 POINTS<br> If you are going 60 mph, how many miles will you go in 45 minutes?

GenaCL600 [577]

Answer:

You would go 45 miles.

Step-by-Step Explanation:

If you are going 60 mph you would be going 1 mile per minute

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3 years ago