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Vadim26 [7]
2 years ago
7

Consider the equation: 3+x=x^2+3xNEED HELP ASAP!!!!!

Mathematics
2 answers:
zavuch27 [327]2 years ago
6 0

Answer:

4=(x+1)^{2}

x= -1 ±2

Khan Academy

atroni [7]2 years ago
3 0

Answer:

x = 1 and x = -3

Step-by-step explanation:

We need to solve the given equation.

3+x=x^2+3x

Taking all terms together,

x^2+3x-3-x=0\\\\x^2+2x-3=0\\\\x^2+3x-x-3=0\\\\x(x+3)-1(x+3)=0\\\\(x-1)(x+3)=0\\\\x=1\ and\ x=-3

So, the solution of the above equation is x = 1 and x = -3.

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Solve the following simultaneous equations: 1. a) x-y=-5 and x + y = -1​
Sonbull [250]

Answer:

x = -3, y = 2

Step-by-step explanation:

x - y = -5

x = -5 + y

Let's put this into the other equation

(-5 + y) + y = -1

-5 + 2y = -1

2y = 4

y = 2

Now we can solve for x by plugging y into either equation

x + (2) = -1

x = -3

8 0
2 years ago
Read 2 more answers
6. In a standard deck of cards:
Dafna11 [192]

Events A and B are dependent (option B).

<h3>What are dependent events?</h3>

Dependent events are events that can occur together. If event A occurs then event B would occur. In a standard deck of cards, cards that are hearts are red in colour. If a heart card is picked, then it would be red in colour.

Independents events are events whose occurrence do not depend on each other. They are random events.

To learn more about independent events, please check: brainly.com/question/13075229

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7 0
2 years ago
How many 3-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7 if repetition of digits is not allowed?
attashe74 [19]
Think of it this way:
_ _ _ (3 digit number)

for the first blank you could have 7 possibilities
for the second blank you could have 6 possibilities
for the third blank you could have 5 possibilities
because each time you fill in a blank one number is removed from the list of possibilities

7×6×5=210. there are 210 possibilities
7 0
3 years ago
Please answer this question, i need it to be explained also.please
Anettt [7]

Answer:

6.6

Step-by-step explanation:

If you minus 54.2 and 47.6 you get 6.6

54.2

-<u>47.6</u>

6.6

8 0
2 years ago
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PLEASE HELP PLEASE i don’t know how to do this
DochEvi [55]

Answer:

716.31454 and 228.01π

Step-by-step explanation:

Area = πr^2

π · 15.1^2 ≈ 716.31454

Area in terms of pi = 228.01π

Thank you for posting this question! If you feel my answer is correct, please mark Brainliest. If you need help with anything else, let me know! :)

8 0
3 years ago
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