Question

0,7(5х-8у)-0,6(3х-4у), если х=0,58; у= -0,06.

Answer 1

Ответ:

Пошаговое объяснение:

0,7(5х-8у)-0,6(3х-4у) = 3,5х -5,6у-1,8х +2,4у=1,7х -3,2у

подставляем х=0,58; у= -0,06.

1,7 * 0,58 - 3,3 * (- 0,06)=0,986 + 0,192 =1,178

Answer 2

To evaluate the expression 0.7(5x-8y)-0.6(3x-4y) using the given values x = 0.58 and y = -0.06, we can substitute these values into the expression and perform the calculations step by step:

Expression: 0.7(5x-8y) - 0.6(3x-4y)

Given values: x = 0.58, y = -0.06

Substitute the values: 0.7(5 * 0.58 - 8 * (-0.06)) - 0.6(3 * 0.58 - 4 * (-0.06))

Now, calculate the values within the parentheses: 0.7(2.9 + 0.48) - 0.6(1.74 + 0.24)

Simplify further: 0.7(3.38) - 0.6(1.98)

Now calculate the multiplications: 2.366 - 1.188

Finally, subtract: 2.366 - 1.188 = 1.178

So, the result of the expression 0.7(5x-8y) - 0.6(3x-4y) with x = 0.58 and y = -0.06 is approximately 1.178.