Answer:
<em> x=15 degrees</em>
Step-by-step explanation:
angle EFC+angle ACF=180(allied angles)
5x + 7x =180
12x =180
<em> x=15 degrees</em>
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The coefficient is 9 because it is not talking about the variable or power.
Answer:
? = 56.
Step-by-step explanation:
In the problem, the side 20 corresponds to side 32 and side 20 + 35 corresponds to side 32 + ?.



? + 32 = 8 * 11
? + 32 = 88
? = 56.
Hope this helps!
Part 1
1. 16-composite
2. 0- Neither
3. 29- prime
4. 33- composite
5. 47- prime
6. 51- composite
7. 64- Composite
8. 73- prime
9. 12- Composite
10. 24- Composite
11. 17- prime
12. 38- composite