Using the FOIL Method (First, Outer, Inner, Last) of multiplying binomials, C would be formed by the last numbers multiplied, or the "last" portion of "FOIL."
Thus, multiplying P and Q would give you C, and the answer is A.
In order to solve this equation you could use guess and check with multiple choice, or you can set up a system of equations.
First we must define our variables:
x=price of taco
y=price of burrito
Michael bought 4 tacos (4x) and (+) and Burrito (y) for $9.50 (=9.5)
4x+y=9.50
Noah bought two tacos (2x) and (+) three burritos (3y) for (=) $11 (11)
2x+3y=11
To solve this system of equations you can easily see substitution as the easiest method. For substitution we must isolate one variable:
4x+y=9.50
y=-4x+9.5
We can now replace the y in the other equation:
2x+3(-4x+9.5)=11
Then solve this equation to get the price of a taco (x)
2x-12x+28.5=11
-10x=-17.5
x=1.75
The price of a taco would be $1.75
Answer:
a) 10 weeks
b) P(k≤2)=0.190
c) P(k>17)=0.167
Step-by-step explanation:
This problem can be solved applying the geometric distribution.
The probability of needing k weeks to find an acceptable apartment can be written as:
a) The expected value of this distribution is:
Answer: 10 weeks
b) The probability of finding an acceptable department in the first 2 weeks is:
c) We have to calculate P(k>17)
Answer:
3rd option
Step-by-step explanation:
f(x) = 0 are the points on the x- axis where the graph crosses, the zeros
The graph crosses the x- axis at - 2 , 1 and 3
