C because the x's repeat with the 3 and 3. If the x's repeat it is not a function.
Hope that helps.
B. Five cubed because there at 5 2s there and 2*2*2*2*2 would be the same thing as saying 5^2
\left[y \right] = \left[ -5\right][y]=[−5] totally answer
Answer:
its either -20 or -7
Step-by-step explanation:
i believe its -20 tho hope it helps
Answer:
Step-by-step explanation:
To start calculating, we first need to make some proof.
Firstly, since AB = AC, we know that ΔABC is isosceles, which means that ∠ABC = ∠ACB.
Now, looking only to ΔBDE and ΔCDF, we can see that they are similar, because the two of its angles are congruent:
∠BED=∠CFD
∠DBE=∠DCF
To make it easier to visualize which are the corresponding vertexes, we can draw them like this:
And we need to remember that BC is 24, so:
BD+CD=24
Since the triangles are similar, their corresponding sides have constant ratio, which we can calculate from the corresponding sides DE and CF:

This ratio is the same for the other corresponding sides, so we can apply that for BD and CD:

Thus, the measure of CF is approximately 13, alternative D.