$9 is the average rate of change!
Answer:
Step-by-step explanation:
1) a very poor question indeed. It has at least two possible solutions
c = 3x + 2 or c = 3(x + 2)
when x = 2
c = 3(2) + 2 = 8 or c = 3(2 + 2) = 12
when x = 5
c = 3(5) + 2 = 17 or c = 3(5 + 2) = 21
2)
y = x + 2
when x = 2
y = 2 + 2 = 4
when x = 5
y = 5 + 2 = 7
Answer:
20 + 35x
35x+ 20
Step-by-step explanation:
Answer:
C) 20.97 AED
Step-by-step explanation:
To find the expected value, E(X), or mean μ of a discrete random variable X, simply multiply each value of the random variable by its probability and add the products. The formula is given as
.
Here, x represents values of the random variable X,
represents the corresponding probability, and symbol
represents the sum of all products
. Here we use the symbol
for the mean because it is a parameter. It represents the mean of a population.
In this case, the expected value of the ticket is 
This means that Ahmad can expect to win 20.97 AED for the ticket.
The equation of the line passes through (2, -1) and (4, 5) is -3x + y = - 7 So, option 2 is correct.
<u>Solution:</u>
Given, two points are (2, -1) and (4, 5)
We have to find that a line that passes through the given two points.
First let us find the slope of the line that passes through given two points.
So, slope of line "m" is given as:


So slope of our line = 
Now, let us find the line equation using point slope form:

Then equation of line is,
y – 5 = 3(x – 4)
y – 5 = 3x – 12
-3x + y = 5 – 12
-3x + y = -7
Hence, the line equation is -3x + y = - 7 so, option 2 is correct.