Answer:
Step-by-step explanation:
First, subtract 7 from each side.
Now, add in a blank on each side so you can write in your new term that will complete the square. We'll call that term 's' for now.
The next step is to take half of the b term, and then square that. In this case, half of '' is . If we square that we get . So that is the term we will put in for .
Simplify:
If you look at the right side of the equation, we can factor. That's because we <u>completed the square</u>. We can use the 'guess and check' method to factor. Remember, this is where we use 2 sets of parentheses and fill in the blanks.
If we were to FOIL the right side we would end up with .
Since we have 2 '(x-1)' terms next to each other, we can simplify to:
Now, all we need to do is add 6 to both sides and we have the vertex form.
I hope this helps!
Answer:
The answer is 2,400:)
Step-by-step explanation:
8×300 is 2400
It would be about 270
40 + 40 is 80 so take half of the hits he would get and add it to the number of hits in total then times it by 10
Answer:
x is equal to -2, and y is equal to 2.
Step-by-step explanation:
You can solve this type of question by solving one of the equations for a given variable, and substituting it into another.
Because both of these are definitions of y, we could simply say, y = y, and thus:
x + 4 = -2x - 2
3x = -6
x = -2
This tells us also that y, being equal to x + 4, must equal 2
We can find the same solution by solving one of them for x, then substituting that into the other. We know:
y = x + 4
so we can also say:
x = y - 4
If we substitute that into the other:
y = -2x - 2
y = -2(y - 4) - 2
y = -2y + 8 -2
3y = 6
y = 2
which we can then plug into either of the original equations to solve for x:
y = x + 4
2 = x + 4
x = -2
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Step-by-step explanation:
okay