To be able to answer this I must see the text and what part A (the roaring twenties) has to do with this question
Since I cannot help much I will give some tips
*look at part a and conclude why this question relates to (I assume part b)
*find the two details that make no sense (you can eliminate those)
*reread the question and your remaining answers
*reread part A and pick the best answer out of the two remaining choices
-gold luck sorry I couldn’t help much
A mass movement of funds invested in the stock market could result in a stock market crash such as that of 1929.
Answer:
12.57cm
Explanation:
C=πd, where C is the circumference and D is the diameter.
Simply put the diameter into (d) and times it by 3.14, or by π directly if the question specifies "give your answer in terms of π".
Answer:
One part of the evidence that the color of the flame created is from the metal ion and not from the chemical is that not any of the flames with dissimilar metals had a similar color (for each metal had its flame color). Even if most of the metals tested had chloride, the colors of the flames were all dissimilar. The two flames that both had copper (one had copper (II) chloride and the other had copper (II) sulfate) were exactly close in color. The one was green-blue, and the other was a bright green. This displays that they were nearly the same, and the minor difference could be credited to error.