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anzhelika [568]
3 years ago
13

A committee of four students is being randomly selected from a group of twenty students. How many combinations of four students

are possible?
Mathematics
1 answer:
Cloud [144]3 years ago
7 0

Answer:

4,845

Step-by-step explanation:

Hope this helps:)

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Find the x-intercepts (solve for x) for the following AND PLEASE SHOW YOUR WORK! y=−2x^2−9x+5
frosja888 [35]

Answer:

see explanation

Step-by-step explanation:

To find the x- intercepts set y = 0, that is

- 2x² - 9x + 5 = 0

To factorise the quadratic consider the factors of the product of the coefficient of the x² term and the constant term that sum to give the coefficient of the x- term.

product = - 2 × 5 = - 10 and sum = - 9

The factors are - 10 and + 1

Use these factors to split the middle term

- 2x² - 10x + x + 5 = 0 ( factor the first/second and third/fourth terms )

- 2x(x + 5) + 1(x + 5) ( factor out (x + 5) )

(x + 5)(- 2x + 1) = 0

equate each factor to zero and solve for x

x + 5 = 0 ⇒ x = - 5

- 2x + 1 = 0 ⇒ x = \frac{1}{2}

x-intercepts are x = - 5 and x = \frac{1}{2}



7 0
4 years ago
Given
Sophie [7]
1. sin<span> (30°) = 1/2; 2. </span>sin<span> (300°) = - 3/2; 3. tan (30°) = 3/3; </span>4<span>. </span>sin<span> (45°) = 2/2; 5. sec (</span><span>240°) = -2; </span>6<span>. </span>sin<span> (</span>60<span>°) = 3/2; 7. </span>cos<span> (45°) = 2/2: Start a new line. 8. </span>cos<span> ... 17. tan (</span>150<span>°) = - 3/3; 18. </span>csc<span> (30°) = 2; 19. </span>csc<span> (45°) = 2; 20. </span>sec<span> (</span>210<span>°) = -2 3/3: Start a new line. 21. </span>cot<span> (45°) = 1; 22. sec (45°) = 2; 23. </span>sin<span> (330°) = -1/2; </span>24<span>. tan (135°) = -1 ...</span>
8 0
3 years ago
Find the better buy plz quick
Nana76 [90]
It's letter c 89 cents
4 0
3 years ago
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A store sells mugs each mug costs the same amount. During a sale, the store reduces the price of each by $1.25. Jackson spends $
poizon [28]

Answer:

$14.73

Step-by-step explanation:

I hope this helps

5 0
3 years ago
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What is the diameter of a hemisphere with a volume of <br> 62617<br> cm<br> 3<br> ,<br> 62617 cm
marusya05 [52]

Answer:

Step-by-step explanation:

Hemisphere Volume = (2/3) * PI * radius^3

sphere radius^3 = Hemisphere Volume / ((2/3) PI)

sphere radius^3 = 62,617 / 2.0943951024

sphere radius^3 = 29,897.4152147556

sphere radius = 31.0368674154

sphere diameter = 62.1 cm (rounded to nearest tenth of a centimeters)

7 0
3 years ago
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