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Rasek [7]
3 years ago
11

Am i correct ?? just wanted to make sure i think not oop

Mathematics
1 answer:
Vlad1618 [11]3 years ago
5 0

Answer:

I do not believe you are !

Step-by-step explanation:

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How many real solutions does this system of equations have? x2+y2=363x−y+1=0 A. 0 B. 3 C. 2 D. 1
Rus_ich [418]

Answer:

Correct option: C -> 2

Step-by-step explanation:

The first equation is:

x^2+y^2=363

And the second equation is:

x-y+1=0

From the second equation, we have:

y = x + 1

Using this value of y in the first equation, we have:

x^2 + (x+1)^2 = 363

x^2 + x^2 + 2x + 1 = 363

2x^2 + 2x= 362

x^2 + x - 181 = 0

Calculating the discriminant Delta, we have:

\Delta = b^2 - 4ac = 1 + 4*181 = 725

We have \Delta > 0, so we have two real values for x, therefore we have two solutions for this system.

Correct option: C.

(If the system of equation is actually:

x^2+y^2=36

3x-y+1=0

We would have:

y = 3x + 1

x^2+(3x+1)^2=36

x^2+9x^2+6x+1=36

10x^2+6x-35=0

\Delta = 36 + 1400 = 1436

We also have \Delta > 0, so we have two solutions for this system.

Correct option: C.)

3 0
3 years ago
It takes Janelle four hours to drive to New York. If New York is 240 miles from Boston, what is Janelle’s speed per hour?
Lemur [1.5K]

Answer:

60 mph

Step-by-step explanation:

mph=miles/hours

240/4=60

60 miles per hour

3 0
3 years ago
State whether the graph of each linear relationship is a solid line or set of unconnected points explain your reasoning the rela
notsponge [240]
Hello! The graph of each linear equation is a set of unconnected points. The thing is that with a solid line, you can have things in-between whole numbers. However, you can’t have a fraction of a movie. Dotted points show that you can’t have in between values and that only whole quantities count.
4 0
3 years ago
I need to know everything. Sorry, I'm dumb, lol.​
pishuonlain [190]

Answer:

it's ok bro :>

Step-by-step explanation:

u not dumb!☆W☆

6 0
3 years ago
Read 2 more answers
If there are 60 miles in each walk how many walks can you walk in 3 miles
Radda [10]

Answer:

0.15 of a walk

Step-by-step explanation:

2/60 =0.15

Therefore you can walk 0.15 of a walk(so confused lol)

5 0
3 years ago
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