Question

4x² + 1 2/3y при х = 7 y = 42

Answer 1

$4x^2 + 1\frac{2}{3} y$          x=7 y=42

$4*(7)^2 + 1\frac{2}{3} *42=4*49+\frac{5}{3} *42=196+5*14=196+70=266.$

Answer 2

Ответ:  266.

Пошаговое объяснение:

4x² + 1 2/3y при х = 7 y = 42;

4*7²+5/3*42=196+70=266.

Answer 3

To evaluate the expression 4x² + (1 2/3)y when x = 7 and y = 42, we can substitute these values into the expression and calculate the result.

Let's start with x = 7: 4(7)² + (1 2/3)y

Simplifying the expression further: 4(49) + (1 2/3)y

Next, we substitute y = 42: 4(49) + (1 2/3)(42)

Now, let's calculate each part of the expression: 4(49) = 196

To multiply a mixed number by a whole number, we first convert the mixed number to an improper fraction: 1 2/3 = (3 * 1 + 2)/3 = 5/3

Next, we multiply the whole number and the numerator of the fraction by the other whole number: 5/3 * 42 = (5 * 42)/(3 * 1) = 210/3 = 70

Substituting these values back into the expression: 196 + 70

Finally, we perform the addition to get the result: 266

Therefore, when x = 7 and y = 42, the value of the expression 4x² + (1 2/3)y is 266.