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Debora [2.8K]
3 years ago
5

A fair coin is tossed three times.

Mathematics
2 answers:
qaws [65]3 years ago
6 0

B 2/3
A 3/3. Hsheikdkekekekld

Aleks04 [339]3 years ago
3 0

A. Since the tosses are independent, we can just calculate the probability of obtaining one head and repeating that 3 times. Obviously, the probability of getting a head for one toss is 1/2, our answer is <em><u> 1/2⋅1/2⋅1/2=1/8</u></em>

B. Suppose you have a fair coin: this means it has a 50% chance of landing heads up and a 50% chance of landing tails up. Suppose you flip it three times and these flips are independent. What is the probability that it lands heads up, then tails up, then heads up? So the answer is <em><u>1/8, or 12.5%.</u></em>

~*"AUBA14"*~

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Anyone know the answers to 1, 2, 3, 4, 5
muminat

Answer:

1. C. 1/4(4) + 1/4(9) (A, 1/4(13), is essentially C simplified (without figuring it out).)

2. G - -4

3. A - -4(-5) + (-4)x

4. J - 1/6x + 1/6y

5. A - 60(10 + 2)

Step-by-step explanation:

1.

1/4(4 + 9) <em>We can distribute 1/4 into 4 and 9.</em>

1/4(4) + 1/4(9) <em>Now while we have our answer, this can be further simplified.</em>

1/4(13) <em>What's on the left is the simplified 2-term equation.</em>

<em>So really, either C or A will be the answer. But due to the format of #3, I put C as my answer. B & D were out because there wasn't any extra multiplication.</em>

2.

-2/5(15 - 5) <em>Subtract 5 from 15 to get 10.</em>

-2/5(10) <em>Multiply -2/5 by 10 to get -20/5</em>

-20/5 <em>Divide -20 by 5 to get -4.</em>

-4, so G is the answer. <em>This was negative, so H & J were out to begin with. F was out as soon as I solved the problem.</em>

3.

-4(-5 + x) <em>Distribute -4 into -5 + x.</em>

-4(-5) + (-4)x, so A is the answer. <em>Don't get tricked! B may look right, but there should be a negative sign in front of the 5, hence why it's incorrect.</em>

4.

1/6(x + y) <em>Distribute 1/6 into x + y.</em>

1/6x + 1/6y, so J is the answer. <em>F & G are already out because you don't multiply the variables by each other. H is also out because there wasn't any multiplication involved other than x + y being multiplied by 1/6.</em>

5.

Only 60(10 + 2) would have worked, so A is the answer. The tickets would have cost 720 dollars (600 + 120). <em>B would have equated to 624 (24 + 600), C would have been 132 (6 * 22), and D would have been 600. (10 * 60).</em>

6 0
2 years ago
I need help solving
zhenek [66]
Super blurry can you resubmit or type out the question
7 0
3 years ago
Ramu and ravi borrowed rs 8000​
Phoenix [80]

Answer: Rs. 11,520

Step-by-step explanation:

As the method of compounding is not stated, the default of simple interest will be used.

Simple interest is a fixed amount that is paid over the course of the loan and is based on the original amount borrowed.

Formula is:

Amount owed = Amount borrowed * ( 1 + rate * time)

= 8,000 * ( 1 + 8% * 5.5 years)

= 8,000 * 1.44

= rs 11,520

4 0
2 years ago
(2,-2) (5, 9) (5, -7) (1.4)
SSSSS [86.1K]
Number 1 because of the buttcheeks in the center
3 0
3 years ago
What is the prime factor of 8
ExtremeBDS [4]
Prime factor is a factor that is a prime number.
Prime factors of :
8 : 2 × 2 × 2. Also can be written as
{2}^{3}
12 : 2 × 2 × 3. Also can be written as
{2}^{2} \times 3

20 : 2 × 2 × 5. Also can be written as
{2}^{2} \times 5

30 : 2 × 3 × 5

56 : 2 × 2 × 2 ×7. Also can be written as
{2}^{3} \times 7

70 : 2 × 5 × 7

You can find all of them by using Factor Tree [ as shown in the picture] or Dividing by prime numbers.

5 0
2 years ago
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