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grin007 [14]
3 years ago
8

Anna is solving this equation:

Mathematics
2 answers:
nordsb [41]3 years ago
3 0

Answer:

7-6x+15=-3x-7

29=3x

x=29/3

the asnwer is D

Mashcka [7]3 years ago
3 0
The answer is D. 7-6x+15=-3x-7
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Prove that for any natural n the number 3^(n+4)−3^n is divisible by 16.
gtnhenbr [62]

Answer:

Proved (See Explanation)

Step-by-step explanation:

Show that 3ⁿ⁺⁴ - 3ⁿ is divisible by 16.

This is done as follows

\frac{3^{n+4} - 3^n}{16}

From laws of indices;

aᵐ⁺ⁿ = aᵐ * aⁿ.

So, 3ⁿ⁺⁴ can be written as 3ⁿ * 3⁴.

\frac{3^{n+4} - 3^n}{16} becomes

\frac{3^n * 3^4 - 3^n}{16}

Factorize

\frac{3^n(3^4 - 1)}{16}

\frac{3^n(81 - 1)}{16}

\frac{3^n(80)}{16}

3ⁿ * 5

5(3ⁿ)

<em>The expression can not be further simplified.</em>

<em>However, we can conclude that when 3ⁿ⁺⁴ - 3ⁿ is divisible by 16, because 5(3ⁿ) is a natural whole number as long as n is a natural whole number.</em>

3 0
3 years ago
The largest segmented ground-based telescope is the Gran Telescopio Canarias in Spain. Its mirror is made up of 36 hexagonal seg
Marta_Voda [28]
2.1 m²

so um it's a regular hexagon since all of its side lengths are equal.


Mark brainliest please
5 0
2 years ago
Suppose the number of births that occur in a hospital can be assumed to have a Poisson distribution with parameter = the average
arsen [322]

Answer:

0.5372

Step-by-step explanation:

Given that the number of births that occur in a hospital can be assumed to have a Poisson distribution with parameter = the average birth rate of 1.8 births per hour.

Let X be the no of births in the hospital per hour

X is Poisson

with mean = 1.8

the probability of observing at least two births in a given hour at the hospital

= P(X\geq 2)\\= 1-F(1)\\= 1-0.4628\\= 0.5372

the probability of observing at least two births in a given hour at the hospital = 0.5372

4 0
3 years ago
If AB = AC; then B = C if
zloy xaker [14]
A is a square matrix
8 0
2 years ago
Read 2 more answers
Dudee plz help will be given the brainlist if answered correctly
IrinaVladis [17]

Answer:

hey im not actually here to help you, i just need points. thanks for the points

Step-by-step explanation:

8 0
2 years ago
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