You times 4 by everything inside the parentheses, so the answer would be as follows. 16a + 20b - 12
Answer: 35
the age of Roberto is x (x > 3)(x ∈ N)
because Roberto is 3 years older than Carolyn => the age of Carolyn is x - 3
in 7 years, the age of Roberto is x + 7; the age of Carolyn is x - 3 + 7 = x + 4
because In 7 years the sum of their ages will be 81 =>
x + 7 + x + 4 = 81
⇔ 2x + 11 = 81
⇔ 2x = 70
⇔ x = 70/2 = 35
=> the age of Roberto is 35
Step-by-step explanation:
Answer:
$92492.40
Step-by-step explanation:
168168.00 - 55% (75675.60)= $92492.40
Answer:
12 sorry if its wrong
Step-by-step explanation:
