Answer:
step 2
Step-by-step explanation:
we have
---> given problem
step 1
Move the constant to the right side

the step 1 is correct
step 2
Complete the square


<u><em>The step 2 is not correct</em></u>
step 3
Rewrite as perfect squares

step 4
take square root both sides

step 5
Find the values of x



Answer:
A.
Step-by-step explanation:
The total amount Akash paid in those 3 months for his cell phone bill.
Answer:
Pat a) The unit rate of graph at left is 
Part b) The unit rate of graph at right is 
see the attached figure
Step-by-step explanation:
we know that
The unit rate of a linear equation is the same that the slope of the linear equation
step 1
Find the slope of the graph at left
This graph represent a proportional relationship (because the line passes through the origin)
The slope is equal to the constant of proportionality k

we have the point (1,25)
substitute the values in the formula

step 2
Find the slope of the graph at right
we have the points (2,80) and (3,120)
This graph represent a proportional relationship (because the line passes through the origin)
The slope is equal to the constant of proportionality k

Is necessary only one point to determine the constant of proportionality
take the point (2,80)
substitute the values

<u>Verify</u>
The formula to calculate the slope between two points is equal to

we have the points (2,80) and (3,120)
substitute the values


Answer:
"0.0125" is the right solution.
Step-by-step explanation:
The given values are:
Random sample,
n = 90
Claims,
p = 20%
or,
= 0.20
By using normal approximation, we get
⇒ 
On substituting the values, we get
⇒ 
⇒ 
Now,
The standard deviation will be:
⇒ 
On putting the above given values, we get
⇒ 
⇒ 
⇒ 
⇒ 
hence,
By using the continuity correction or the z-table, we get
⇒ 
⇒ 
⇒ 
From table,
⇒ 