X2=9 has only one solution, which is 4.5
Answer:
<em>m∠KLM = 64° ; m∠M = 26°</em>
Step-by-step explanation:
(20x + 4)° = (6x + 4)° + (8x + 18)°
20x + 4 = 14x + 22
6x = 18
x = 3
<em>m∠KLM</em> = (20×3 + 4)° = <em>64°</em>
<em>m∠M</em> = 90° - 64° = <em>26°</em>
Answer:
4m^4 - 8/3m^2 n^2 + 4/9n^4
Step-by-step explanation:
(2m^2 - 2/3n^2)(2m^2 - 2/3n^2)
= 2m^2(2m^2 - 2/3n^2) - 2/3n^2(2m^2 - 2/3n^2)
= 4m^4 - 4/3m^2 n^2 - 4/3m^2n^2 + 4/9n^4
= 4m^4 - 8/3m^2 n^2 + 4/9n^4
Answer:
The loudness of a jack hammer is 96 dB. Its sound intensity is about
0.004
The loudness of a compactor is 94 dB. Its sound intensity is about
0.0025
Step-by-step explanation:
It would be 4 2/9. Hope this helps!