Question

• 8,7с-3,2с+4,5с, если с = 3,97

Answer 1

8,7c-3,2c+4,5c=10c,
если c=3,97
10c=10•3,97=39,7
Ответ: 39,7

Answer 2

To evaluate the expression 8.7c - 3.2c + 4.5c, where c = 3.97, we substitute the value of c into the expression and perform the calculations:

8.7c - 3.2c + 4.5c

Replacing c with 3.97:

8.7(3.97) - 3.2(3.97) + 4.5(3.97)

Now we can calculate the result:

(8.7 * 3.97) - (3.2 * 3.97) + (4.5 * 3.97) 34.509 - 12.784 + 17.865 = 39.59

Therefore, when c = 3.97, the expression 8.7c - 3.2c + 4.5c equals 39.59.