Answer:
399
Step-by-step explanation:
To find the population in a future year, use the formula:
where A is the amount, p is the starting population, r is 5% or 0.05, and t is the number of years.
Since the population is increasing it is addition. Here we are finding A. Substitute P =380, r=0.05 and t=1.
Answer:
True
Step-by-step explanation:
330 Seconds = 5.5 Minutes = 5 Minutes and 30 Seconds
Answer:
The solutions are -3 and -1
Step-by-step explanation:
∵ y = -x² - 2x + 8
∵ y = 2x + 11
∴ -x² - 2x + 8 = 2x + 11
∴ -x² - 2x - 2x + 8 - 11 = 0
∴ -x² - 4x - 3 = 0 ⇒ divide both sides by -1
∴ x² + 4x + 3 = 0
∴ (x + 3)(x + 1) = 0
∴ x + 3 = 0 ⇒ x = -3
∴ x + 1 = 0 ⇒ x = -1
∴ The solutions are -3 and -1