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bagirrra123 [75]
2 years ago
13

if you flipped a coin 20 times, in percentage how many times do you expect the coin to land on heads, an how many times on tails

?
Mathematics
1 answer:
djyliett [7]2 years ago
8 0

Answer:

50% head and 50% tails.

Step-by-step explanation:

A coin only has two sides to flip on and is equally probably flip heads or tails. If you flipped the coin 20 times you could expect to flip 10 heads and 10 tails.

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The expression is 3 (x+4)-(2x+7) what is that equivalent too
posledela

Answer:

x+19

Step-by-step explanation:

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3 years ago
Read 2 more answers
Sherrie invested some money at 6% interest. Sherrie also invested $249 more than 4 times that amount at 12%. How much is investe
Anon25 [30]

Answer:

  • 6%: $1776
  • 12%: $7353

Step-by-step explanation:

Let x represent the amount invested at 6%. Then the amount invested at 12% is 4x+249. Sherrie's interest is ...

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  x = 959.04/0.54 = 1776

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Sherrie invested $1776 at 6% and $7353 at 12%.

4 0
3 years ago
A sweater is on sale for 20% off the regular price. The sale price is $60 . What is the regular price of the sweater?On a 15 sca
kherson [118]
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3 years ago
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Zinaida [17]

Answer:

x = -3+√5,  -3-√5 (exact roots)

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