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Alina [70]
3 years ago
9

Which represents the solutions of the graphed system of equations, y=x^2-2x and y=-2x-1

Mathematics
1 answer:
pickupchik [31]3 years ago
7 0

Answer:

No real roots.  Imaginary roots would be x = plus or minus i .

Step-by-step explanation:

Eliminate y for now by equating y=x^2-2x and y=-2x-1.  Then:

x^2 - 2x = -2x - 1

Add 2x to both sides.  Then x^2 = -1.

This is NO SOLUTION, since the square root of -1 would be imaginary.

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Substitute y = -x into the first equation:

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-x = -5

x = 5

Substitute x = 5 into y = -x

y = -(5)

y = -5

Answer: x = 5, y = -5

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Answer:

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Step-by-step explanation:

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5 0
3 years ago
I need help on it, I don’t know what I’m supposed to do
bogdanovich [222]

Answer:

The length of river frontage for each lot are 96.55 ft. 98.85 ft, 101.15 ft and 103.45 ft.

Step-by-step explanation:

See the attached diagram.

The river frontage of 400 ft will be divided into 84 : 86 : 88 : 90 for each lot as AP, BQ, CR, DS and ET all are parallel.

Therefore, PQ : QR : RS : ST = 84 : 86 : 88 : 90 = 42 : 43 : 44 : 45

Let, PQ = 42x, QR = 43x, RS = 44x and ST = 45x

So, (42x + 43x + 44x + 45x) = 400

⇒ 175x = 400

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3 years ago
cybil flips a coin and rolls a fair number cube at the same time. What is the probability that she will toss tails and roll a nu
IRISSAK [1]

Answer:

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