Answer:
D
Step-by-step explanation:
I think D is the answer.
Answer:
Step-by-step explanation:
xy = k
where k is the constant of variation.
We can also express the relationship between x and y as:
y =
where k is the constant of variation.
Since k is constant, we can find k given any point by multiplying the x-coordinate by the y-coordinate. For example, if y varies inversely as x, and x = 5 when y = 2, then the constant of variation is k = xy = 5(2) = 10. Thus, the equation describing this inverse variation is xy = 10 or y = .
Example 1: If y varies inversely as x, and y = 6 when x = , write an equation describing this inverse variation.
k = (6) = 8
xy = 8 or y =
Example 2: If y varies inversely as x, and the constant of variation is k = , what is y when x = 10?
xy =
10y =
y = × = × =
k is constant. Thus, given any two points (x1, y1) and (x2, y2) which satisfy the inverse variation, x1y1 = k and x2y2 = k. Consequently, x1y1 = x2y2 for any two points that satisfy the inverse variation.
Example 3: If y varies inversely as x, and y = 10 when x = 6, then what is y when x = 15?
x1y1 = x2y2
6(10) = 15y
60 = 15y
y = 4
Thus, when x = 6, y = 4.
2nd answer choice
constant of variation is xy. XY=23. If X=7 then Y=23/7.
Answer:
move the decimal in 1.4 two places two the right and do the same with 3.36 then divide
Step-by-step explanation:
Answer:
The mold will cover half the area as much are one day before it.
Step-by-step explanation:
Given:
Every day the mold on bread grows doubles
And by 8th day entire bread covered with it.
To Find:
When was half the bread covered by mold.
Solution:
It is said that area covered by mold doubles on each day
Total days taken to cover entire bread are 8
Let Area of bread be A
So Area covered (A) corresponds to 8 days with doubling.
So on previous day it should What ever area on 8th day/2
i.e A(8)/2
Similar on 6th day A(7)/2
So on 5ht day =A(6)/2 ,4th= A(5)/2, on 3rd= A(4)/2, on 2nd=A(3)/2
On 1st =A(2)/2
So we required Area= half of total.
<em>One day before the 8th day will be 7th day</em>
<em>on that day it will cover half are so that on next day will cover the double of the previous area consumed.</em>
