Answer:
Step-by-step explanation:
Given
x² - 3x
To make the expression a perfect square
add ( half the coefficient of the x- term )²
x² + 2( - 
)x + , thus
x² - 3x +
= (x - )² ← a perfect square
Answer:
B
Step-by-step explanation:
Pardons for Confederate leaders
I’m also struggling with that but it’s the perimeter of a right triangle
Step-by-step explanation:
substitude the y value into y in the first equation
-8-(12x-50)=30
-8-12x+50=30
you see it?
then solve
-8+50-30=12x
you got the value = 12x
then you divide with 12
finally you get x
A.
Cars Amount
0 cars $-117.50
1 car $-113.50
2 cars $-109.50
3 cars $-106.50
4 cars $-102.50
10 cars $-77.50
50 cars $82.50
100 cars $282.50
I do not know what graph you have but, you can see how much money you will make because it will form a straight line on the graph. As long as you continue the line, you will be able to see how many cars you have to clean to make a certain amount of money. Same is for the table.
B.
The change in the amount of money earned with each car is $4.00
The change on the graph is shown by the increasing slope.
C.
The number of cars that need to be washed can be seen by using the formula y=4x-117.5
The information from part a and b is used to show that there is a constant change (slope) and that more money is made by washing more cars.
3. The members need to wash 30 cars (rounded up from 29.375) to break even.
4. The members would have to wash 249 cars (rounded from 248.125) to fund their Washington trip.
The members would have to wash 117 cars (116.875) to fund their Valentine's Day Dance.
5. They would have to wash 366 cars.
Realistic
This can be realistic if there are a lot of members in the Math Club and if they set up in a good location. It will be successful.
Not Realistic
This is not realistic because there are many other factors that need to be taken into consideration. There might not be enough cars or people that are willing to get their car cleaned by these students. There are other supplies that they might need to buy and more.
