Answer:
Slope is 9 and -2 is the y-intercept
Step-by-step explanation:
As an equation in slope-intercept form is written as y=mx+b where m is slope and b is its intercept on the y-axis.
If one writes a linear equation as a function of y, one can easily get slope which is coefficient of x and intercept, which is constant term.
As y= -9x is already in this form, we have its slope as -9 and intercept on y-axis is 0, that is if it passes through the line of origin.
The tripling time of population is 6 days and the population will be doubled in 3.5 days.
Given that the population of a bacteria is tripling in 6 days.
We have to find the tripling time of population and the time when the population will be doubled.
Suppose the population of bacteria in beginning be x.
The population of bacteria seems like arithmetic progression in which a =x, nth term =3x and n=6.
Aritmetic progression is a sequence which is having common difference.
nth term=a+(n-1)d
3x=x+(6-1)*d
3x-x=5d
2x=5d
d=2x/5
d=0.4x
So now we have to find the value of n where population will be 2x.
nth term=a+(n-1)d
put nth term=2x, a=x,d=0.4x
2x=x+(n-1)*0.4x
2x-x=(n-1)*0.4x
x/0.4x=n-1
2.5=n-1
n=2.5+1
n=3.5
Hence the population of bacteria willbe doubled after 3.5 days.
Learn more about arithmetic progressions at brainly.com/question/6561461
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Answer is 4 1/10. Need an explanation?
Answer:
Step-by-step explanation:
1/3p=34h
p=102h
h=p/102
h=1/102p
Hence she can write 1/102 part of the paper in an hour
Answer:
I am in middle school
Step-by-step explanation: