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3 years ago

Help me please find x for this triangle!!!!

Mathematics

2 answers:

fgiga [73]3 years ago

6 0

89 degrees I think sorry if I’m wrong

8090 [49]3 years ago

3 0

X = 29

61 + 90 = 151
180-151 = 29

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What are the x-intercepts of the quadratic function f(x)=x^2+6x−16

Assoli18 [71]

-8 and 2
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4 years ago

Evaluate the expression when b=4 and x=-2 . b-4x

oee [108]

Answer:

Step-by-step explanation:

b-4x

Plug in 4 as b and -2 as x

= (4)-4(-2)

Multiply 4 and 2

= 4-(-8)

Two negatives make a positive

= 4+8

= 12

I hope this helps!

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3 years ago

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What value is a permutation of n things taken r at a time divided by to get the combination of n things taken r at a time?

Lera25 [3.4K]

Answer:

A. r!

Step-by-step explanation:

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

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$P_{(n,r)} = \frac{n!}{(n-r)!}$

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Division:

$\frac{P_{(n,r)}}{C_{n,r}} = \frac{\frac{n!}{(n-r)!}}{\frac{n!}{r!(n-r)!}} = \frac{n!}{(n-r)!} \times \frac{r!(n-r)!}{n!} = r!$

So the correct answer is:

A. r!

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3 years ago

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astra-53 [7]

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Sholpan [36]

Answer is

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N=3

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3 years ago

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