Question

I need help! Algebra 2 homework and please explain the work :) (Part 2)

Answer 1

Answer:

3. 1/28

4. About 7.11%

Step-by-step explanation:

3.

Since two of the eight ads are by a local retailer, the probability of picking either one once is 2/8=1/4. However, the second time, since on of the ads has already been used and there are a total of 7 left, the new probability is 1/7. Multiplying these two together, you get 1/4*1/7=1/28.

4.

To find the probability, you need to find the area of the smaller triangle and the rest. The formula for the area of an equilateral triangle is $\frac{\sqrt{3}}{4}a^2$, meaning that the area of the big triangle is $56.25\sqrt{3}$ and the area of the little triangle is $4\sqrt{3}$. $\frac{4\sqrt{3}}{56.25\sqrt{3}}\approx 7.11\%$. Hope this helps!