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melisa1 [442]
3 years ago
7

A textbook search committee is considering 18 books for possible adoption. The committee has decided to select 4 of the 18 for f

urther consideration. In how many ways can it do so?
Mathematics
1 answer:
8090 [49]3 years ago
6 0
This is a combination problem, since order does not matter. Specifically, it is an 18- choose - 4. 
₁₈C₄ = 18! ÷ (4!(18-4)!
= 18! ÷ (4! (14!))               The 14! cancels out in the numerator/denominator
= 18 x 17 x 16 x 15 ÷ (4 x 3 x 2)
= 3,060

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2/5+1/3=<br> What is the answer
Alex Ar [27]

Answer:

11/15 OR 0.73

Step-by-step explanation:

2/5 ---> 6/15

1/3 ---> 5/15

6/15 + 5/15 = 11/15

OR

2/5 ---> 0.4

1/3 ---> 0.33

0.4 + 0.33 = 0.73

4 0
2 years ago
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3 years ago
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fiasKO [112]
Surface area of a sphere = 4πr² 

Surface area of the sphere = 4π(0.8)² = 8.0 ft²


Volume of a sphere = 4/3 πr³

Volume of the sphere = 4/3 π(0.8)³ = 2.1 ft³


Answer: Surface area = 8.0 ft² and volume - 2.1 ft³ (Answer C)
7 0
3 years ago
Im stuck ....<br> What is the solution for the equation 2(3x−7)=−4(x+5)+3? <br> plss show work
Ipatiy [6.2K]

Answer:

2(3x - 7) =  - 4(x + 5) + 3 \\ 6x - 14 =  - 4x - 20 + 3 \\ 6x + 4x =  - 20 + 3 + 14 \\ 10x =  - 3 \\  \\ x =  \frac{ - 3}{10}  \\  \\ x =  - 0.3

I hope I helped you^_^

5 0
2 years ago
Which of the following inequalities is true for ALL real values of x?
attashe74 [19]
(2x)2 > 3x2 is true the first two you can not have two x’s on the same side because where would you put them both when solving them the last one I’m not sure about
4 0
3 years ago
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