Question

3x + 16y = 56 2x-y= 14 варианты ответа ( 2; 8) ( 4; 8) ( 8; 2) ( 2; 4)

Answer 1

Ответ:

8;2

Пошаговое объяснение:

Вот как-то так вот и все

Answer 2

To check which of the given answer choices (2; 8), (4; 8), (8; 2), or (2; 4) satisfy the system of equations:

1. 3x + 16y = 56
2. 2x - y = 14

We can substitute the values of x and y from each answer choice into both equations and see which one is true.

Let's start with the first choice, (2; 8):

1. 3(2) + 16(8) = 6 + 128 = 134
2. 2(2) - 8 = 4 - 8 = -4

So, (2; 8) does not satisfy the system of equations because it doesn't make both equations true.

Let's try the second choice, (4; 8):

1. 3(4) + 16(8) = 12 + 128 = 140
2. 2(4) - 8 = 8 - 8 = 0

(4; 8) doesn't satisfy the system of equations either because the first equation is not true.

Now, let's try the third choice, (8; 2):

1. 3(8) + 16(2) = 24 + 32 = 56
2. 2(8) - 2 = 16 - 2 = 14

(8; 2) does satisfy the system of equations because it makes both equations true.

Lastly, let's try the fourth choice, (2; 4):

1. 3(2) + 16(4) = 6 + 64 = 70
2. 2(2) - 4 = 4 - 4 = 0

(2; 4) also does not satisfy the system of equations because the first equation is not true.

So, the correct answer is (8; 2) because it is the only one that makes both equations true.