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mamaluj [8]
4 years ago
9

Which of the following is NOT equivalent to 15!/10!(5!)

Mathematics
1 answer:
kondaur [170]4 years ago
4 0
Answer: Choice A

The notation P(15,10) refers to the equation
P(n,r) = (n!)/(n-r)!
where n = 15 and r = 10. So,
P(15,10) = (15!)/(15-10)!
P(15,10) = (15!)/(5!)
which is close to the original expression but it is missing the 10! part in the denominator. Instead you'll use a combination formula
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Charles is 20% heavier than Edith. If Charles weighs 60kg, what is Edith's weight?​
ddd [48]

Charles' weight = Edith's weight + 20% of Edith's weight

We'll use a variable to represent Edith's weight, x.

The decimal form of 20% is 0.2.

60 = x + 0.2x

60 = 1.2x

x = 50

Edith's weight is 50kg.

Hope this helps!

4 0
2 years ago
3K - 2 + 4k = 2K + 5 - 6k
lesya [120]

Answer:

2.3

Step-by-step explanation:

on the left side u add 4k+3k=7k

on the right side u subtract 2k-6k=4k

then on the left side u add 2 to each side and u get rid of the 2 on the left side

on the right side u add 5+2=7

then on the right side u add 4k on each side and get rid of the 4k on the right

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on both sides divide by 3

7 0
3 years ago
M 1 = (2x + 28)<br> m 3= (6x + 4)<br> What is m&lt;2<br> Enter your answer in the box.
s2008m [1.1K]

Answer:

m∠2 = 140°

Step-by-step explanation:

m∠1 = m∠3, since they're vertical angles.

Solve for x:

2x+28=6x+4\\24=4x\\6=x

Plug in 6 for x for either m∠1 or m∠3. Doesn't matter since they're equal.

m∠1 = (2(6) + 28)°

m∠1 = (12 + 28)°

m∠1 = 40°

Now that we know m∠1, we can now solve for m∠2.

m∠1 + m∠2 = 180°

40° + m∠2 = 180°

m∠2 = 140°

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3 years ago
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tensa zangetsu [6.8K]

Answer:

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Step-by-step explanation:

4 0
3 years ago
In this picture B and F are midpoints CE=90 BF=
larisa86 [58]

By definition, BF = 1/2 * CE;


So, BF = 1/2 * 90 = 45.

BF = 45


(Midsegment Length Theorem)

6 0
4 years ago
Read 2 more answers
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