Question

найдите значение выражения0.7542x+0.2458x-20.9 если х=220и ещё 66,6у-44,4у+8,11 если у=10пожалуйста срочно нужно у меня скоро зачётка а я не готовилась

Answer 1

0.7542x+0.2458x = x

220-20.9=199.1

 

66,6у-44,4у=22.2y

222+8.11=230.11

 

Интересно, что за зачетка и как тебе поможет этот пример))))

Answer 2

Calculation of Expression 0.7542x + 0.2458x - 20.9

To find the value of the expression 0.7542x + 0.2458x - 20.9, we need to substitute the value of x into the expression. According to the given information, x = 220.

Let's calculate the expression step by step:

0.7542x + 0.2458x - 20.9

= (0.7542 * 220) + (0.2458 * 220) - 20.9

= 166.524 + 54.076 - 20.9

= 199.6

Therefore, when x = 220, the value of the expression 0.7542x + 0.2458x - 20.9 is 199.6.

Calculation of Expression 66.6y - 44.4y + 8.11

To find the value of the expression 66.6y - 44.4y + 8.11, we need to substitute the value of y into the expression. According to the given information, y = 10.

Let's calculate the expression step by step:

66.6y - 44.4y + 8.11

= (66.6 * 10) - (44.4 * 10) + 8.11

= 666 - 444 + 8.11

= 230.11

Therefore, when y = 10, the value of the expression 66.6y - 44.4y + 8.11 is 230.11.

I hope this helps! Good luck with your exam!