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2 years ago

The sum of the interior angles, s, in an n-sided polygon can be determined using the formula s=180(n-2), where n is the

Mathematics

2 answers:

Mamont248 [21]2 years ago

6 0

Answer:

9 sides.

Step-by-step explanation:

1260 = 180(n - 2) Divide both sides by 180:

7 = n - 2

n = 7 + 2 = 9.

bazaltina [42]2 years ago

5 0

Answer:

9 sides

Step-by-step explanation:

Given the sum of the interior angles = 1260°, then

180° (n - 2) = 1260 ( divide both sides by 180 )

n - 2 = 7 ( add 2 to both sides ), hence

n = 9

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What is the correct factorization of<br> х2 + 5х – 6?

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The answer to your question is (x+6)(x-1)

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2 years ago

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Simplify this expression: cos t(sec t − cos t)

Nostrana [21]

$\cos t \, (\sec t - \cos t)$
$= \cos t \, (\frac{1}{\cos t} - \cos t)$
$= 1 - \cos^2 t$
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3 years ago

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What is the midpoint of this ?

dybincka [34]

Answer:

M(-2; -5)

Step-by-step explanation:

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2 years ago

At the city museum, child admission is $6.20 and adult admission is $9.50. On Friday, tickets were sold for a total sales of $10

Nostrana [21]

Answer:

98child tickets were sold that day

Step by step Explanation:

Let the number of children= A of the number of adult

Then

6.20C + 9.50A = 1082.0

From the question it was said that four times as many adult tickets as child tickets were sold which implies that number of adult was FOUR times the children, then we can say

A= 4C

Then substitute into the above equation

6.20C + 9.50A = 1082.0

6.20C + 9.50(4C) = 1082.0

6.20C + 38C= 1082.0

44.2C =1082.0

C= 24.48

But we know that

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3 years ago

What function is increasing? will give brainlist !

Wewaii [24]

Answer:

Option B.

Step-by-step explanation:

Option A.

f(x) = $(0.5)^{x}$

Derivative of the given function,

f'(x) = $\frac{d}{dx}(0.5)^x$

= $(0.5)^x[\text{ln}(0.5)]$

= $-(0.693)(0.5)^{x}$

Since derivative of the function is negative, the given function is decreasing.

Option B. f(x) = $5^x$

f'(x) = $\frac{d}{dx}(5)^x$

= $(5)^x[\text{ln}(5)]$

= $1.609(5)^x$

Since derivative is positive, given function is increasing.

Option C. f(x) = $(\frac{1}{5})^x$

f'(x) = $\frac{d}{dx}(\frac{1}{5})^x$

= $\frac{d}{dx}(5)^{(-x)}$

= $-5^{-x}.\text{ln}(5)$

Since derivative is negative, given function is decreasing.

Option D. f(x) = $(\frac{1}{15})^x$

f'(x) = $-15^{-x}[\text{ln}(15)]$

= $-2.708(15)^{-x}$

Since derivative is negative, given function is decreasing.

Option (B) is the answer.

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2 years ago