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3 years ago

Solve the system of equations: y = 2x - 5, y=x^2- 5

Mathematics

1 answer:

Burka [1]3 years ago

6 0

Answer:

Step-by-step explanation:

both equation is y so

2x - 5 = x² - 5

2x = x²

0 = x² - 2x

0 = x(x-2)

x = 0

x = 2

for x = 0

y = 2x - 5

y = 0 - 5

y = -5

(0,-5)

for x = 2

y = 2x - 5

y = 2(2) - 5

y = -1

(2,-1)

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3 years ago

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Answer:

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3 years ago

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Answer:

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3 years ago

What's the probability of pulling two red cards in a row from a deck of cards?

monitta

Hey there! I'm happy to help!

Let's say that we don't have jokers. In that case, there are 52 cards, and half of them are red (so 26 are red). The probability of pulling a red card once is 1/2 since half the cards are red.

If we pick one out, there are only 51 total cards left and 25 red cards. So, the probability of picking one again would be 25/51.

We multiply the probabilities of these two events to find the probability of them both happening.

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Have a wonderful day! :D

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3 years ago

What’s the answer???

Harrizon [31]

first

second

and fifth are true

Basically the square root of -1 is i. From that you should be able to deduce the answers.

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3 years ago