Answer:
B
Step-by-step explanation:
when you flip across the y axis you change the signs of the x coordinate but not the y coordinate.
X² - 6x + 9 = 0
a = 1, b = -6, c = 9
Discriminant = b² - 4ac = <span> (-6)² - 4*1*9 = 36 - 36 = 0
Since the Disciminant, <span>D = 0, the roots are real and equal</span></span>
Answer:
In 50 years there'll be approximately 3582 elephants.
Step-by-step explanation:
If they are decreasing at a rate of 9% per year, it means it's population by year is:
population(0) = 400000
population(1) = population(0)*(100% - 9%) = population(0)*(91%)
population(2) = population(1)*(91%) = population(0)*(91%)*(91%) = population(0)*(91%)²
population(3) = population(2)*(91%) = population(0)*(91%)²*(91%) = population(0)*(91%)³
And so on, so the number of population as years passes is:
population(n) = population(0)*(91/100)^n
In this case we want to know the population of elephants when n = 50, so we have:
population(50) = 400000*(0.91)^50 = 3582.033
In 50 years there'll be approximately 3582 elephants.
Graph A shows a consistent relationship between time and distance. We know this fact because as seen in graph A the line is straight and progresses without any changes. The slope and line is consistent, meaning that the relationship between time and distance is also consistent. Some differences between graph a and b is that graph b does no carry on in a straight line, it goes up and down and isn’t consistent. One difference is that graph a has a direct positive relationship, meaning that as the x variable increases, so does the y variable. This isn’t true for graph b though.