Answer/Step-by-step explanation:
1. <ABC and <BCD are alternate interior angles. Alternate interior angles are equal, therefore, since m<ABC = 38°, then m<BCD = 38°
2. m<ECF = m<BCD (corresponding angles)
m<ECF = 38° (substitution)
3. m<DCF + m<ECF = 180° (linear pair)
m<DCF + 38° = 180° (substitution)
m<DCF = 180° - 38° (Subtraction property of equality)
m<DCF = 142°
Answer:
2.5, 4.5
Step-by-step explanation:
The x coordinate is 2.5 & the y coordinate is 4.5
Answer:
First blank is cos(h)cos(x)
Second blank is sin(x)
Step-by-step explanation:
Look up the identity and apply it here
Answer:
-9,-8,-4, 5, 21, 46,95,159
Step-by-step explanation:
We keep adding the square numbers to the previous terms
The next term is 
The next one is 
We got this by observing the pattern
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