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Contact [7]
3 years ago
7

Please answer I need it!

Mathematics
2 answers:
Alex3 years ago
8 0

Answer:

Number 1

Step-by-step explanation:

The only one that makes sense

quester [9]3 years ago
7 0
C cuz I just know it
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17. Evaluate a. 6! b. 8P5 c. 12C4
Andreyy89
The factorial ! just means we multiply by every natural number less that the value so
6! =6×5×4×3×2×1= 720

for permutations we use the formula n!/(n-r)!
so we have 8!/(8-5)!=8!/3!=8×7×6×5×4

for combinations s we have n!/(n-r)!r!
so we have 12!/(12-4)!4!=12!/8!4!=12×11×10×9/4×3×2=11×10×9/2=99×5
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3 years ago
Can someone help me with this geometry question please 100% correct only
Brums [2.3K]
The correct answer is a (8^3) because you write out 8 being multiplied 3 times, which is the correct answer

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3 years ago
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X-4y=28 2x+y=2 Elimination
makvit [3.9K]

\left\{\begin{array}{ccc}x-4y=28\\2x+y=2&\text{multiply both sides by 4}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-4y=28\\8x+4y=8\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad9x=36\qquad\text{divide both sides by 9}\\.\qquad\boxed{x=4}\\\\\text{Put the value of x to the second equation:}\\\\2(4)+y=2\\8+y=2\qquad\text{subtract 8 from both sides}\\\boxed{y=-6}\\\\Answer:\ \boxed{x=4\ and\ y=-6\to(4,\ -6)}

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3 years ago
Which of the following is the solution to the equation 4 / 5n = 20?
S_A_V [24]
N=25 because 20 divided by 4 is 5 which is 1/5 of n meaning 5x5 is 25
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What conclusion can be made when r, the correlation coefficient between two variables, is 0?
IgorLugansk [536]
The correlation coefficient between two variables, r, is always going to be between -1 and 1.

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