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3 years ago

Which relation is not a function?

Mathematics

1 answer:

velikii [3]3 years ago

5 0

Answer:

Step-by-step explanation:

That would be D because there is a repetition of x = -6.

-6 maps to -6, 5 and -5 which is not allowed in a function.

Functions can be one-to-one or many-to-one but not one-to-many.

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Which data set is the most spread from it's mean?

laila [671]

Answer

C. 49, 17, 4, 18

Step by step explanation

Here mean of all the data set is 88

To find the most spread of data, we need to find the range.

range of set A = The highest value - the lowest value = 36-6 = 30

Range of set B = 30-15 = 15

Range of set C = 49-4 = 45

Range of set D = 30-14= 16

Here the highest range is in Set C.

Therefore, answer is C. 49, 17, 4, 18

4 0

3 years ago

Read 2 more answers

Prove that C(50,3) + C(50,4) = C(51,4)

valkas [14]

By definition of the binomial coefficient,

$C(n,k) = \dfrac{n!}{k!(n-k)!}$

so we have

$C(50,3) + C(50,4) = \dfrac{50!}{3!47!} + \dfrac{50!}{4!46!} \\\\ = \dfrac{50!}{3!46!} \left(\dfrac1{47} + \dfrac14\right) \\\\ = \dfrac{50!}{3!46!} \times \dfrac{51}{188} \\\\ = \dfrac{51!}{3!46!} \times \dfrac1{4\times47} \\\\ = \dfrac{51!}{4!47!} \\\\ = \dfrac{51!}{4!(51-4)!} = C(51,4)$

as required.

5 0

2 years ago

Solve by quadratic formula:<br> 3x^2 - 10x - 20= 0

Arlecino [84]

this is your answer, i hope this helps you

5 0

3 years ago

The product of 3 and the square of a number increased by that number

shepuryov [24]

Answer: 3?

Step-by-step explanation:

8 0

3 years ago

Will give brainlist please help me

o-na [289]

Answer:

x=8

Step-by-step explanation:

When trying to figure this out, you may see that x might be 8. Since the angels are all 120 degrees and equal up to 360 degrees (full size,) x will equal 8.

7 0

3 years ago