Answer:
x₁ = -3√2 , x₂ = 3√2
Step-by-step explanation:
x² = 18 ⇔ x = √18 or x= -√18
√18 = √[9•2] = √9•√2 = 3•√2 = 3√2
The world population is estimated to be nearly 9 billion by the year 2050.
Africa- 20%
What is the estimated population of Africa in the year 2050?
9 billion x 0.2 = 1.8 billion
Step-by-step explanation:
calculate
64 – 28 – 41 – 20 + 24 + 12 + 10
Answer:
80, 96, 8, 10
Step-by-step explanation:
The first set gives us the ratio, 32:2 which is basically 16
5*16= 80
6*16= 96
Notice how it is on the top now, so divide by 16
128/16= 8
160/16=10
