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devlian [24]
3 years ago
14

Your english teacher has given you a list of 10 possible topics for essays. you need to pick four topics from the list to write

about over the school year. how many different groups of four essay topics can you choose?
Mathematics
1 answer:
postnew [5]3 years ago
6 0
Assuming order doesn't matter, we can use the probability formula nCr. Using a calculator, you get that there are 210 possible combinations. However, if order did matter, then you would use nPr, in which case would the answer be 5040.

:)

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V(x + 9)2 = + 25<br> If x + 9 = 5, then x =<br> If x + 9 = -5, then x =
ipn [44]

Answer:

x = -4, v = 2.5

x = -14, v = -2.5

Step-by-step explanation:

I am a bit confused with the beginning part of the question. From what I understand, you are trying to solve for x and then plug x into the top equation to find the value for V. I am sorry if that is not what you are looking for. If it is, look below!

x + 9 = 5

x = 5 -9

x = -4

v(x + 9)2 = 25

v(-4 + 9)2 = 25

v(5)2 = 25

v(10) = 25

v = 25/10

v = 2.5

x + 9 = -5

x = -5 -9

x = -14

v(x + 9)2 = 25

v(-14 + 9)2 = 25

v(-5)2 = 25

v(-10) = 25

v = 25/(-10)

v = -2.5

I hope this helped! If not, I am sorry. :(

4 0
3 years ago
What is the definition of inverse false in math? PLEASE HELP! thank you!:)
Aloiza [94]
It is to negate the hypothesis and the conclusion of a conditional statement.
5 0
3 years ago
How much in cash is 41/50% of 28800.
guajiro [1.7K]
41/50%=82
28800-82= 28718.
That may be the answer.
3 0
3 years ago
What is 8.756×8.8 ?​
WARRIOR [948]

Answer:

77.0528

Step-by-step explanation:

hope this helps

4 0
2 years ago
Read 2 more answers
Help help help help help
valentina_108 [34]
The Pythagorean Theorem applies to all right angle triangles. Therefore if you substitute the numbers, it should work out.

Pythagorean Theorem: a^2+b^2=c^2

Does 8^2+15^2=17^2?

8 squared plus 15 squared is 289. 17 squared is 289. Therefore #1 is a right triangle.

5^2+8^2=11^2

89 doesn’t equal 121 so #2 is not a right angle triangle
7 0
3 years ago
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