Answer is:
7.8 lb of 21% aluminum and 33.2 ib of <span>
42% aluminum.</span>
ω₁<span> = 21% ÷ 100% = 0.21.
ω</span>₂<span> = 42% ÷ 100% = 0.42.
ω</span>₃<span> = 38% ÷ 100% = 0.38.
</span>m₁ = ?.
m₂<span> = ?.
</span>m₃ = m₁ + m₂<span>.
</span>m₃ = 41 pounds.
m₁ = 41 lb - m₂<span>.
ω</span>₁ · m₁ + ω₂ ·m₂ = ω₃ · m₃.
0.21 · (41 lb -
m₂) + 0.42 · m₂ = 0.38 · 41 lb.
8.61 lb - 0.21m₂ + 0.42m₂ = 15.58 lb.
0.21m₂ = 6.97 lb.
m₂ = 6.97 lb ÷ 0.21.
m₂ = 33.2 lb.
m₁ = 41 lb - 33.2 lb.
m₁<span> = 7.8 lb.</span>
City B is at a higher temperature because as you go higher in altitude the boiling point of water becomes lower.
The answer is <span>magnets.
Pseudoscience is a belief and not a scientific method. Diet, drugs, and exercise cannot be examples of pseudoscience since it is known they can improve the condition of arthritis. But, on the other side, magnets are not scientifically confirmed as useful in arthritis treatment. There is only a belief that magnets can cure arthritis. Therefore, magnets are the exaple of pseudoscience.</span>
Answer:
1187 ( four S.D. )
Explanation:
(433.621 - 333.9) × 11.900 333.9 has only 4 S.D. answer should only have 4 S.D
= 1186.6799 = ~ 1187 with 4 Significant Digits
