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1 year ago

30+12=?(5+2) what factor is missing from the equation?

Mathematics

2 answers:

GaryK [48]1 year ago

7 0

Answer:

? = 6

Step-by-step explanation:

30 + 12 = 42

42 = ?(7)

we have to answer this question: what is the number that multiply at 7 gives as result 42?

the answer is 6

Nesterboy [21]1 year ago

5 0

Answer:

the answer would be 6

Step-by-step explanation:

42 divided by 6 is 7

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If n is a positive integer, how many 5-tuples of integers from 1 through n can be formed in which the elements of the 5-tuple ar

erma4kov [3.2K]

Answer:

$\frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{120}$

Step-by-step explanation:

Given

5 tuples implies that:

$n = 5$

$(h,i,j,k,m)$ implies that:

$r = 5$

Required

How many 5-tuples of integers $(h, i, j, k,m)$ are there such that $n\ge h\ge i\ge j\ge k\ge m\ge 1$

From the question, the order of the integers h, i, j, k and m does not matter. This implies that, we make use of combination to solve this problem.

Also considering that repetition is allowed: This implies that, a number can be repeated in more than 1 location

So, there are n + 4 items to make selection from

The selection becomes:

$^{n}C_r => ^{n + 4}C_5$

$^{n + 4}C_5 = \frac{(n+4)!}{(n+4-5)!5!}$

$^{n + 4}C_5 = \frac{(n+4)!}{(n-1)!5!}$

Expand the numerator

$^{n + 4}C_5 = \frac{(n+4)!(n+3)*(n+2)*(n+1)*n*(n-1)!}{(n-1)!5!}$

$^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{5!}$

$^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{5*4*3*2*1}$

$^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{120}$

Solved

6 0

2 years ago

Dolve for theta. С 13 4 o o A B Your answer

ANTONII [103]

Answer:

θ ≈ 17.1°

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan θ = $\frac{opposite}{adjacent}$ = $\frac{BC}{AC}$ = $\frac{4}{13}$ , then

θ = $tan^{-1}$ ( $\frac{4}{13}$ ) ≈ 17.1° ( to the nearest tenth )

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2 years ago

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julia-pushkina [17]

Answer:

90°

Step-by-step explanation:

because from south to east is half of north which makes it 90°

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tankabanditka [31]

There would be 36 purple flowers.

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2 years ago

Evaluate the question below . 12-2

MAXImum [283]

Answer:

=>12-2

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You're Welcome

Hope this helps you.

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2 years ago