The answer is D. because the x-value is positive and the y-value is negative
Answer:

You simply need to multiply

.
Multiply the numerators.

Multiply the denominators.

Simplify.
Product of 3 negatives equals a negative answer
Product of 3 positives equals a positive answer
Answer:
Step-by-step explanation:
<u>We have similar triangles here.</u>
- BC║DE, AB║AD and AC║AE ⇒ ΔADE ~ ΔABC
<u>The ratio of corresponding sides of similar triangles is same:</u>
- BC/DE = AC/AE
- BC / 2 = 30/3
- BC / 2 = 10
- BC = 2*10
- BC = 20 m