Question

X+3y-21,8 при x=1,2 и y=6,8.

Answer 1

Подставляем сразу :
1.2 + 3*6.8-21.8= 1.2 + 20.4-21.8= 21.6-21.8=-0.2

Answer 2

X+3y-21,8 = 1,2 + 3*6,8 - 21,8 = 1,2 + 20,4 - 21,8 = 21,6 - 21,8 = -0,2
Ответ: -0.2

Answer 3

To evaluate the expression X+3y-21.8 for the given values of x and y, we substitute them into the expression:

When x = 1 and y = 6:

X + 3y - 21.8 = 1 + 3(6) - 21.8 = 18.2

When x = 1 and y = 8:

X + 3y - 21.8 = 1 + 3(8) - 21.8 = 20.2

When x = 2 and y = 6:

X + 3y - 21.8 = 2 + 3(6) - 21.8 = 16.2

When x = 2 and y = 8:

X + 3y - 21.8 = 2 + 3(8) - 21.8 = 18.2

Therefore, the value of X+3y-21.8 for x=1,2 and y=6,8 is:

• When x = 1 and y = 6: 18.2
• When x = 1 and y = 8: 20.2
• When x = 2 and y = 6: 16.2
• When x = 2 and y = 8: 18.2