Question

2) 0.15c - 14d ^ 2 + 4.5 , якшо c = - 20 , d = 1/2

Answer 1

0,15*(-20)-14*1/2+4,5=-3-7+4,5=-5,5.

Answer 2

To evaluate the expression 0.15c - 14d^2 + 4.5 when c = -20 and d = 1/2, we can substitute the values into the expression and perform the calculations.

Let's substitute the values: 0.15c - 14d^2 + 4.5 = 0.15(-20) - 14(1/2)^2 + 4.5 = -3 - 14(1/4) + 4.5 = -3 - 14/4 + 4.5 = -3 - 3.5 + 4.5 = -6.5 + 4.5 = -2

Therefore, when c = -20 and d = 1/2, the expression 0.15c - 14d^2 + 4.5 evaluates to -2.