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vodomira [7]
3 years ago
8

Ethan has a box of assorted tea bags. There are seven green tea bags, six peppermint tea bags, five lemon tea bags, and six plan

tation mint tea bags in the box. Ethan predicts that when he picks a tea bag from the box without looking, he will draw a peppermint tea bag one-fourth of the time. Which activity would best allow Ethan to test his prediction?
a. Randomly select a tea bag from the box and see if it is a peppermint tea bag.
b. Randomly select and replace a tea bag 80 times. Then, observe how close to 20 times a peppermint tea bag is drawn.
c. Randomly select a tea bag. Then, continue to draw another tea bag until all six peppermint tea bags are drawn.
d. Randomly select and replace a tea bag 90 times. Then, observe how close to 24 times a peppermint tea bag is drawn.
Mathematics
1 answer:
Likurg_2 [28]3 years ago
3 0
<span>B. Randomly select and replace a tea bag 80 times. Then, observe how close to 20 times a peppermint tea bag is drawn. </span>
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Find two geometric means between 5 and 135
aniked [119]
Answer:

We are effectively looking for a and b such that 5, a, b, 135 is a geometric sequence.

This sequence has common ratio <span><span>3<span>√<span>1355</span></span></span>=3</span>, hence <span>a=15</span> and <span>b=45</span>

Explanation:

In a geometric sequence, each intermediate term is the geometric mean of the term before it and the term after it.

So we want to find a and b such that 5, a, b, 135 is a geometric sequence.

If the common ratio is r then:

<span><span>a=5r</span><span>b=ar=5<span>r2</span></span><span>135=br=5<span>r3</span></span></span>

Hence <span><span>r3</span>=<span>1355</span>=27</span>, so <span>r=<span>3<span>√27</span></span>=3</span>

Then <span>a=5r=15</span> and <span>b=ar=15⋅3=45</span>


6 0
3 years ago
What is the value of y
Reil [10]
All angles in a triangle add up to 180
So 79+37=116
180-116=64
Y=64
Hope this helps
5 0
3 years ago
Work out the surface area of this cylinder.<br> Radius= 12 cm<br> Height= 35 cm
Ad libitum [116K]
3543.72 cm^2.

Hopefully it helped ya
7 0
3 years ago
Ben has 18 photos to put in a photo album. He can put 4 in each page if he fills 4 pages, how many photos are on the fifth page?
Oksana_A [137]

Answer:

since 4 * 4 = 16

we can subtract 18-16=2

so the answer is 2


6 0
3 years ago
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Answer:

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Step-by-step explanation:

3 0
3 years ago
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