Answer: 8.1 $
Step-by-step explanation: 18 percent of 45 is 8.1 ez math hope this helps.
Given:
perfect score- 100
number of questions of the test- 25
worth of each question- 4 points
Fred's score- 84
n- number of questions Fred had answered incorrectly.
solution:
solve for n
division sentence: (100 ÷ 4 ) - ( 84 ÷ 4 ) = n
(100 ÷ 4 ) - ( 84 ÷ 4 ) = n
25 - 21 = n
4= n
therefore, Fred had answered 4 test questions incorrectly.
Answer:
Part a) We should try to eliminate the y's because the coefficients are the same
Part b) The solution is the point (6,-9)
Step-by-step explanation:
Part a) Which variable pair should we try to eliminate?
we have
----> equation 1
----> equation 2
Solve by elimination
We should try to eliminate the y's because the coefficients are the same
Part b) What is the solution to the system?
Multiply equation 2 by -1 both sides

-----> equation 3
Adds equation 1 and equation 3

Find the value of y
![8x+2y=30[/tex[tex]8(6)+2y=30](https://tex.z-dn.net/?f=8x%2B2y%3D30%5B%2Ftex%3C%2Fp%3E%3Cp%3E%5Btex%5D8%286%29%2B2y%3D30)


The solution is the point (6,-9)
Step-by-step explanation:
To find an equation of a line in point slope form when given the slope and a point we use the formula

where
m is the slope
( x1 , y1) is the point
From the question the point is (-3, -1) and slope 2
The equation is
<h2>

</h2>
Hope this helps you