In ΔCDE, the measure of ∠E=90°, the measure of ∠D=22°, and CD = 80 feet. Find the length of EC to the nearest tenth of a foot.
1 answer:
Answer:
30
Step-by-step explanation:
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D 2520 -------------------------------------------
Answer:
0
Step-by-step explanation:
9^2 * (1/3)^2 -9
PEMDAS says powers first
81 * 1/9 -9
Then multiply
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Then subtract
0
Answer:
- 81x²+180x+100
- 9x²+180x+10²
- using (a+b)²=a²+b²+2ab
- 9x²+2(9x)(10)+10²
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