Answer:
10 + 10 = 21
Step-by-step explanation:
there there
SOLUTION
From the question, we are told that y varies inversely as x
This is mathematically written as
Now, we will remove the proportionality sign and replace it with equal to sign =
If we do this, we will intoduce a constant k
So we have the formula
We will substitute the values of x for 10 and y for 8 into the formula to get k, we have
Now, we will substitute k for 80 back into the formula to get the inverse function, we have
Hence the answer is option C
Answer:
choice b because it is constantly going up the same amount.
Answer: x = 0 , y = -4
Step-by-step explanation:
4x - 3y = 12 } Equation 1
y = 7x - 4 } Equation 2
<em>We can substitute the value of y from equation 2 in equation 1: </em>
4x - 3(7x - 4) = 12
4x - 21x + 12 = 12
-17x = 12-12
-17x = 0
x = 0
<em>Now we can substitute this value of x in equation 2 :</em>
y = 7x - 4 } Equation 2
y = 7·0 - 4 = -4
Answer: x = 0 , y = -4
<h2><em>Spymore</em></h2>
Answer:
The term exponential is often used.
Step-by-step explanation:
The term exponential is used to represent changes in population over time. The idea of (positive) exponential is that the higher the number, the higher the growth. You can relate this with a population, because the higher the population, the more opportunities for it to multiply, thus, the higher it grows.
Usually the way to meassure the population of an species after certain number of years x, you use an exponential function of the form
For certain constants K₀ and a. K₀ is the initial population at the start of the experiment and <em>a </em>number of exponential growth. Essentially, the population of the species is multiplied by a during each year.
For example, if K₀ = 1000 and a = 2, then the population at the start of the experiment is 1000. After the first year is 1000*2 = 2000 and after the second year it is 2000*2 = 4000. Note that, not only the population grow during the years, but also the amount that the population increases also grow: in the first year it grows 1000, and between the first and second year it grows 2000.