Answer:
The error comes between steps 1 and 2.
Step-by-step explanation:
When we combine the like terms of 4x and -5x, then we get a -x. The problem above shows a positive x, which is incorrect.
Answer:
Subsitution
Step-by-step explanation:
We have the equations:
x=2y-1
3x+y=11
The 3 methods of solving systems of equations are:
graphing
substitution
addition/elimination
Graphing involves graphing the two equations and finding their point of intersection, which is the answer
Substitution involves isolating one of the variables in one of the equations, then substituting the resulting expression into the other equation to find both numbers
Addition/Elimination involves adding the two equations together to clear a variable, solving for the other variable, and substituting the answer to the first variable in one of the equations to find the value of the cleared variable from before
Since we have x already isolated onto one side in the first expression, we can easily substitute it as 2y-1 in the second equation.
Therefore, substitution is the best method to solve this graph.
hope this helps!
Answer: B) It is the product of the initial population and the growth factor after d days.
Step-by-step explanation: Given initial number of bacteria = 10.
Rate of increase = 20% each day = 0.2 .
Expression for finding the number of bacteria after d days is given by
, where d is the number of days.
We can see than initial population of bacteria is 10 and 10 is being multiplied with growth factor (1 + 0.2) after d days.
Therefore, correct option is B option.
B) It is the product of the initial population and the growth factor after d days.
The answer is True.
Hope I helped!
~ Zoe
Let me know if you need anything else!
There is no c in this equaltion