Answer:
24:40 or 3:5
Step-by-step explanation:
Boys: 24
All children: 24 + 16 = 40
Boys to total amount of children: 24:40
Simplify: 24:40 = 3:5
Answer:
Quant. ---- Porcentagem
200 ------------- 100
X ------------------ 40
100X = 8.000
Step-by-step explanation:
Recognize that both 144 and 256 are perfect squares; their sqrts are 12 and 16 respectively. Therefore,
144 12 3
sqrt{ ------ } = ----- = ----
256 16 4
Actually, there are negative roots as well as positive ones here; so (for example) write -12/16 as well as +12/16.
Use FOIL and simply, First times First, Outside times Outside, Inside times Inside, Last times Last.
(3x+5)(4x-1)
3x * 4x = 12x²
3x * -1 = -3x
5 * 4x = 20x
5 * -1 = -5
12x² - 3x + 20x - 5
Now simplify by adding -3x to 20x and get:
12x² + 17x - 5