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3 years ago

Suppose that you flip a coin 13 times. what is the probability that you achieve at least 5 tails?

1 answer:

5 0

Probability of flipping either a head or a tail = 1/2

probability of flipping 6 tails in a row (1/2)*6

probability of flipping at least 1 head = 1 - (1/2)*6 = 63/64

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MRS.Bonnette's recipe for banana bread calls for 3 and one fourths cups of sugar. She wants to make 6.5 batches so that she has

densk [106]

Answer:

$21/ \frac {1}{8}$

Step-by-step explanation:

Since we're given that a batch requires 3 and one fourths cups of sugar, this is written as

$3/ \frac {1}{4}$

If she wants 6.5 batches then we just cross multiply

1 batch= $3/ \frac {1}{4}$

6.5 batches=x

X= $6.5\times 3/ \frac {1}{4}$

X= $6/ \frac {1}{2}\times 3/ \frac {1}{4}$

X= $\frac {13}{2}\times \frac {13}{4}$

X= $\frac {169}{8}$

X= $21/ \frac {1}{8}$

6 0

3 years ago

Please help !!!!!!!!!!! Find the value of x

viktelen [127]

Answer:

Step-by-step explanation:

7 0

2 years ago

Jared has 12 more comic books than Zoe. If they have 28 comic books

ZanzabumX [31]

Answer:

20 comic books

Step-by-step explanation:

Let us first set up a variable, x, for the number of books that Zoe has. If Jared has 12 more comics than Zoe, he would have x+12 books.

Given that Zoe and Jared have a total of 28 comic books, let us write an equation and solve for x:

$x+x+12=28\\2x+12=28$

Now that we have a simplified version of the equation, let us solve for x by isolating the variable on the left side:

$2x=28-12\\2x=16\\x=8$

We now know that x=8, and also that Jared has x+12 books. To find the number of comic books Jared has, let us add 12 to x:

$x+12=\\8+12=\\20\\$

Therefore, Jared has 20 comic books.

I hope this helps! Please let me know if you have any further questions :)

4 0

2 years ago

There are 25 black cars, 15 blue cars, 21 red cars and 30 white cars what is the probability of getting a red car

Snezhnost [94]

There are 91 in total. Since there are 21 red cars, it would give you 21/91. Around a 23.07% chance.

7 0

2 years ago

Read 2 more answers

How do i do this ?i need help on finding the answer . To all three questions

Igoryamba

Answer:

area of larger circle : 9π = 28.27

area of smaller circle: 4π = 12.57

area of shaded region: 15.71

Step-by-step explanation:

area of a circle = πr^2

I think these are right i dont know tho

8 0

2 years ago