Answer:
4,-1,-9
Step-by-step explanation:
If you set the factorise to equal zero you can solve for the answer
Answer:
Step-by-step explanation:
The initial amount of students is 13,000, for an answer to part A
The statements that are true are
- This graph is a function because the value of x is the same for every value of y
- The equation of this line is x = 3. Options B and D
This is further explained below.
<h3>What are the
statements?</h3>
Generally, A relation is considered to be a function if it can be shown that each value from the set of first components of ordered pairs is connected with precisely one value from the set of second components of ordered pairs.
In conclusion, You may also consider this in terms of the fact that there is one and only one y associated with each x.
Although it is obvious that this is not the case, the calculation for the vertical line nevertheless uses these terms.
Read more about function
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I’m assuming what you’re asking here is how to *factor* this expression. For that, let’s rearrange the expression into a more familiar form:
-c^2-4c+21
From here, we’ll factor out a -1 so that we have:
-(c^2+4c-21)
Let’s focus on the quadratic expression inside the parentheses. To find our factors (c + x)(c + y), we’ll need to find two terms x and y that multiply together to make -21 and add together to make 4. It turns out that the numbers -3 and 7 work out perfectly for that purpose (-3 x 7 = -21 and 7 + (-3) = 4), so substituting them in for x and y, we have:
(c + (-3))(c + 7)
(c - 3)(c + 7)
And adding back on the negative from a few steps earlier:
-(c - 3)(c + 7)
