Answer:
x > 1.7 minutes
The monthly telephone usage amounts so that plan A is not greater than plan B are all greater than 1.7 minutes.
Step-by-step explanation:
The two plans must be defined by the equation of the line y = mx + b, where
y = plan
m = slope or payment of additional cents per minute
x = time expressed in minutes
For Plan A, we have
y = 4x + 40.10 (Equation A)
While plan B is defined as
y = 7x + 35 (Equation B)
Plan A must be less than Plan B,
4x + 40.10 < 7x + 35
We put the “x” on the left side and the independent terms on the right side,
4x - 7x < 35 - 40.10
We add algebraically,
-3x < -5.10
We multiply the equation by -1 to eliminate the two “minus” signs, changing the inequality sign,
3x > 5.10
We isolate x,
x > 5.10 / 3
We solve, calculating the value of x,
x > 1.7 minutes
The monthly telephone usage amounts so that plan A is not greater than plan B are all greater than 1.7 minutes.
A: The total amount of pie Franklin had to throw away was 2 pies and 67/360th of one.
B: The difference between the milk pie and the mincemeat pie is 53/90th of a pie.
Hope I helped! <3
~TeenOlafLover
*plz give me brainliest if right*
Answer:
0.07%
Step-by-step explanation:
This equation is solving for what percentage of 100 kg is 0.07 kg.
1. Set up the equation
=
0.07 kg out of 100 kg is equal to x out of 100 because x represents the percentage and percentages are out of 100.
2. Solve by cross multiplying
100x = 7
3. Solve for x by dividing both sides by 100
x = 0.07
The answer is 0.07%
Answer:
- Over the real numbers there are no numbers to add to -2 and multiply to 3
- Over the complex set of numbers, the numbers that add to -2 and multiply to 3 are
Step-by-step explanation:
Let and be the numbers.
We know that they add to -2, so equation (1).
We know that they multiply to 3, so equation (2).
To find our numbers, let's solve our system of equations step-by-step:
Step 1. Solve for in equation (1):
equation (3)
Step 2. Replace equation (3) in equation (2) and solve for :
Using the quadratic formula with a=-1, b=-2, and c=-3 we get that
equation (4)
equation (5)
As you can see, the system of equation doesn't have a solution over the reals, but if you need a complex answer, let's keep on.
Step 4. Replace equations (4) and (5) in equation (3) and solve for :
- For
- For
The solutions of our system of equations are:
Step-by-step explanation:
they need to add up to -56
and multiply to 180