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Lady_Fox [76]
3 years ago
13

Select the correct answer.

Mathematics
1 answer:
OLga [1]3 years ago
6 0

Answer:

The answer is c.

This is because when it rotates a 180 degrees around its center it maps a parallelogram on to itself.

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A members-only speaker series allows people to join for $18 and then pay $1 for every event attended.What is the maximum number
Pachacha [2.7K]
The answer is 4 events
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3 years ago
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a local hamburger shop sold a combined total of 641 hamburgers and cheeseburgers on sunday. there were 59 fewer cheseburgers sol
WINSTONCH [101]

Answer: 700 Hamburgers

5 0
3 years ago
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Given the value of cos 20° ≈ 0.9397, enter the sine of a complementary angle. Use an expression relating trigonometric ratios of
NARA [144]

cos(20) = sin(70)

note how 20+70 = 90

The general rule is that if x+y = 90, then cos(x) = sin(y). The rule works in reverse as well. Another way to phrase the rule is cos(x) = sin(90-x).

So,

\cos 20^{\circ} = \boxed{\sin 70^{\circ}} \approx \boxed{0.9397}

Note: if the computer doesn't like the answer of "sin 70" then try "sin(70)" and see how that works out. It's also possible that the teacher wants the single numeric value of "70" in the first box rather than the "sine" part to go along with it. Though that would be strange and incorrect since cos(20) = 70 is a false statement.

8 0
3 years ago
Ten women sit in 10 seats in a line. All of the 10 get up and then reseat themselves using all 10 seats, each sitting in the sea
Alik [6]

Women can be seated in 89 ways.

Let Sn be the number of possible seating arrangements with n women. Consider n≥3 and focus on the rightmost woman. If she goes back to her seat, then there are Sn−1 ways to seat the remaining n−1 women. If he is sitting in the penultimate seat, then the woman who was sitting there before must now sit in the rightmost seat.

This gives us Sn−2 ways to seat another n−2 woman, so we get the recursion Sn=Sn−1+Sn−2. Starting with S1=1 and S2=2 we can calculate S10=89.

For more information about permutation, visit brainly.com/question/11732255

#SPJ4

5 0
2 years ago
Please answer <br> Will give brainlst
KonstantinChe [14]
The answer is C, because in the beginning there where 4 carbon, then when added the oxygen, there was 1 left
5 0
3 years ago
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