Answer:
The equation of the line is y - 3 = 2.5(x - 2) ⇒ D
Step-by-step explanation:
The rule of the slope of a line is m = 
, where
- (x1, y1) and (x2, y2) are two points on the line
The point-slope form of a line is y - y1 = m(x - x1), where
- (x1, y1) is a point on the line
From the given figure
∵ The line passes through points (2, 3) and (0, -2)
∴ x1 = 2 and y1 = 3
∴ x2 = 0 and y2 = -2
→ Substitute them in the rule of the slope to find it
∵ m = 
∴ m = 2.5
→ Substitute the values of m, x1, y1 in the form of the equation above
∵ m = 2.5, x1 = 2, y1 = 3
∵ y - 3 = 2.5(x - 2)
∴ The equation of the line is y - 3 = 2.5(x - 2)
Answer:
what is this for?
Step-by-step explanation:
BTW: 7th graders
The overall equation we can generate from the problem is:
C = (28 + p) * x
where C is the total cost, p is the payment for the
locker, and x the number of people
We can calculate for p:
180 = (28 + p) * 5
28 + p = 36
p = 8
Therefore the cost of one person, x = 1:
C = (28 + 8) * 1
C = $36
Answer:
<span>$36</span>
Answer:
#3
Step-by-step explanation:
Answer:
(0.0757;0.1403)
Step-by-step explanation:
1) Data given and notation
Republicans =115
Democrats=331
Independents=54
Total= n= 115+331+54=500
Confidence=0.98=98%
2) Formula to use
The population proportion have the following distribution
The confidence interval for the population proportion is given by this formula
We have the proportion of independents calculated
We can calculate 
And we can find 
, with this value we can find the critical value 
using the normal distribution table, excel or a calculator.
On this case 
3) Calculating the interval
And now we can calculate the interval:
So the 98% confidence interval for this case would be:
(0.0757;0.1403)
