Answer:
Step-by-step explanation:
First we need to make sure that the leading coefficient is a 1. Ours is a 4, so we need to factor it out, leaving us with
To complete the square, take half the linear term, square it, then add it to both sides. But don't forget about that 4 hanging around out front, refusing to be ignored. Our linear term is 18. Half of 18 is 9, and 9 squared is 81. Add 81 into the parenthesis, but what we REALLY added in was 4*81 which is 324:
To solve this, we need to get the x terms all by themselves. So let's divide both sides by 4 to get
The process of completing the square created a perfect square binomial on the left. We will state this binomial now:
We isolate the x term by taking the square root of both sides:
x - 9 = ±9
From that we have 2 equations:
x - 9 = 9 and x - 9 = -9
Which means that x = 18 or x = 0
Look at the picture.
The area of the hexagon is equal six times the area of the <span>equilateral triangle.
The formula of the </span><span>equilateral triangle with the leg
a:
Therefore the formula of the area of the hexagon with a side lenght
a is:
We have
a = 12cm. Substitute:
</span>
Answer:
-4
Step-by-step explanation:
Number one:
A=Pounds of apples
B=Pounds of oranges
0.75a + 0.89b
All I could figure out was number one, so sorry!
Answer:
1) the general trend is skewed left because there is more data towards the left of the graph, there are more 1's 2's 3's and 4's than there are of any number on the right of the graph.
2) the median is 3 1122233344567 mark off numbers on either side one by one until you get to the center number which is the median
3) add up all the numbers divide by the number of numbers you have which is 13. you end up with 53/13 which is equal to 4.1
4) the mean because if you added 15 to the end of the data set the median would still be 3 but if you added 15 to the mean the mean would jump to 4.9
Step-by-step explanation:
its all explained for you, i hope this helps
