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Mkey [24]
3 years ago
10

How many solutions does the system have?20x - 5y = 54x- y = 1​

Mathematics
1 answer:
irga5000 [103]3 years ago
7 0

Answer:

Infinate

Step-by-step explanation:

If you multiply all factors in the secon eqation by 5, you will get the first eqation.

Therefore for any value of x you can find y, thus having an infinate number of x,y pairs

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Aliun [14]
Did you attach a picture to this, It could be my internet but it’s not showing up on my screen
3 0
3 years ago
The average of 3 test scores if the first two scores are 78 and 82 s=3rd test score
katen-ka-za [31]
If you're given 78 and 82 the answer is a simple average
(78 + 82 + s)/3

3 0
3 years ago
It takes 12 people 15 hours to complete and certain job.how many hours would it take 18 people, working at the same rate to comp
pochemuha

Answer:

2 Hours

Step-by-step explanation:

Required man hours to complete the full job = 12 *15

                                                                           =180 Man hours

Required man hours to complete the 2/5 of the job = 180/5

                                                                                      = 36 Man hours

if 18 peoples are working,

required hours to complete the 2/5 of the job = 36 /18

                                                                            = 2 hours

8 0
3 years ago
Identify the slope and y-intercept of the line whose equation is given. write the y-intercept as an ordered pair. y = negative 2
PSYCHO15rus [73]

The line having the equation, y = -2x + 5, has a slope = -2, and y-intercept = (0, 5). Thus, <u>option A</u> is the best choice.

The slope of a line is the tangent of the angle that the line makes with the positive side of the x-axis.

The y-intercept of a line is the point at which the line intersects the y-axis.

The standard form of a line is <u>y = mx + b</u>, where m represents the slope of the line, and b represents its y-intercept.

In the question, we are asked to identify the slope and the y-intercept of the line whose equation is y = -2x + 5.

Comparing the given equation of the line, y = -2x + 5, with the standard equation of a line, y = mx + b, we can say that,

m = -2, and b = 5.

Representing b as an ordered pair, we get (0, 5), as b represents the y-intercept which is a point on the y-axis, where the x-coordinate is always equal to zero.

Thus, we get the slope = -2, and the y-intercept = (0, 5).

The option representing the answer is <u>option A</u>.

Learn more about the slope and the y-intercept of a line at

brainly.com/question/1479018

#SPJ4

3 0
2 years ago
Of five letters (A, B, C, D, and E), two letters are to be selected at random. How many possible are possible
Vanyuwa [196]

Answer:

10

Step-by-step explanation:

5C2 =<u>5!</u>

       2! (3)!

=<u>1 x 2 x 3 x 4 x 5</u>

(1 x 2) (1 x 2 x 3)

=<u>4 x 5</u>

   2

=<u>20</u>

  2

5C2 = 10

4 0
3 years ago
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