Which layer of the atmosphere reflects radio waves back to Earth? Mesosphere Stratosphere Thermosphere Troposphere BRAINLEST
2 answers:
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Answer:
Step-by-step explanation:
The given inequality is
Add 4 to both sides of the first inequality and subtract 5 from both sides of the second inequality.
We simplify to get:
Divide through the first inequality by 4 and the second by 9.
(a+b)^7= a^7+ 7a^7b+ 21 a^6b²+ 35a^5b³+ 35 a⁴b⁴+ 21 a³b^5 + 7a²b^6 + b^7
