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Maurinko [17]
3 years ago
10

How many ways can a person toss a coin 13 times so that the number of heads is between 7 and 10 inclusive?

Mathematics
1 answer:
maks197457 [2]3 years ago
3 0

Answer:

4004

Step-by-step explanation:

The number of combinations of choosing r objects from a group of n is nCr.

So the number of ways to get 7, 8, 9, or 10 heads from 13 coin tosses is:

₁₃C₇ + ₁₃C₈ + ₁₃C₉ + ₁₃C₁₀

= 1716 + 1287 + 715 + 286

= 4004

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Given the conditional statement "If it is January, then it is winter in the United States," which is true?
vova2212 [387]
The best and most correct answer among the choices provided by your question is the first choice or letter A.

The conditional statement "If it is January, then it is winter in the United States," is converse of the conditional. 

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
8 0
3 years ago
I WILL MAKE YOU BRAINIST
nekit [7.7K]

Answer:

234

Step-by-step explanation:

We want to find the summation from n = 2 to n = 10 of the equation -4 + 5n.

We can use the summation formula:

S=\frac{(a_1+a_n)*n}{2}, where a1 is the first term, a_n is the last term, and n is the number of terms

Here, we can say the first term occurs when n = 2:

-4 + 5n

-4 + 5 * 2 = -4 + 10 = 6

The last term will be when n = 10:

-4 + 5n

-4 + 5 * 10 = -4 + 50 = 46

The number of terms is just 10 - 2 + 1 = 9 terms.

Substitute these in:

S=\frac{(a_1+a_n)*n}{2}

S=\frac{(6+46)*9}{2}=\frac{468}{2} =234

Thus, the answer is 234.

8 0
3 years ago
Q.2. A cricketer scores the following runs in eight innings :
dangina [55]

Answer: Mean Score = 50    Range = 31

               

Step-by-step explanation:

58+76+40+35+46+45+0+100=400

400/8=50

Range = subtract smallest number from largest number

54 - 23 = 31

7 0
3 years ago
Write <br> 6<br> :<br> 9<br> :: <br> 2<br> :<br> 3<br> as a fraction proportion.
Firdavs [7]
6/9 (2/3) and 2/3. Hope this helps you.
3 0
3 years ago
Help please with number 11
Jobisdone [24]

Answer:

No

Step-by-step explanation:

The triangles are not similar since triangle B has an angle (18 cm) that does not correspond to 10, unlike the other angles which you can get by multiplying 3/2.

3 0
3 years ago
Read 2 more answers
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