Calcule o valor da seguinte expressão numérica: 20 - (16 + 17) - [15 - (18 - 23)] * 5 pontos
a) -30.
b) -31.
c) -32.
d) -33.
2) Qual é o resultado para

Simplify the expression. -2/5(10+15m-20n)

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is: