Answer:
The bottom surface of the glass container will be covered a quarter of the way on March 8th.
Step-by-step explanation:
The bacteria covering the bottom surface of the glass container doubles every day. If the surface is completely covered on March 10th, then one day earlier, on March 9th, half of the surface is covered.
Similarly, if half of the surface is covered on March 9th, then one day earlier, on March 8th, a quarter of the surface is covered.
Therefore, the bottom surface of the glass container will be covered a quarter of the way on March 8th.
Discussion
The discriminate is b^2 - 4*a*c
The general equation for a quadratic is ax^2 + bx + c
In this equation's case
a = 1
b= -5
c = - 3
Solve
(-5)^2 - 4*(1)*(-3)
25 - (-12)
25 + 12
37
Note
Since the discriminate is > 0, the roots are real and different. The roots do exist and there are 2 of them.
Answer:
Solved in the diagram
Needs to be 20characters long
Answer:
- x = sandwiches
- y = wraps
- y = -3/4x +420
- y-intercept = 420
- m = -3/4
Step-by-step explanation:
This is a reading comprehension question. The problem statement tells you ...
"x number of sandwiches" and "y number of wraps."
You should be able to deduce that ...
x represents the number of <em>sandwiches</em>
y represents the number of <em>wraps</em>
___
The equation 3x+4y=1680 is put into slope-intercept form by solving for y.
4y = -3x +1680 . . . . . subtract 3x
y = (-3/4)x + 420 . . . .divide by 4
Comparing this to the slope-intercept form y = mx + b, where m is the slope and b is the y-intercept, we see that ...
y-intercept = 420
m = -3/4
