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Doss [256]
3 years ago
15

Which of the following are true statements about any regular polygon? Check all that apply. A. all of it's angles measure 90 deg

rees B. It is a closed figure. C. It is a hexagon. D. It is a quardillateral. E. All of its angles have equal measures. F. Its sides are congruent line segments.
Mathematics
1 answer:
dmitriy555 [2]3 years ago
7 0

Answer:

B,E,F

Step-by-step explanation:

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1.14male studying biology

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From the parking lot at red hill shopping center the angle of the top of the hill is about 25 from the base of the hill the angl
eimsori [14]

Answer:

512 ft.

Step-by-step explanation:

From the parking lot at the Red Hill Shopping Center, the angle of sight (elevation) to the top of the hill is about 25. From the base of the hill you can also sight the top but at an angle of 55. The horizontal distance between sightings is 740 feet. How high is Red Hill? Show your subproblems.

Solution:

Let x be the distance from the base of the hill to the middle of the hill perpendicular to the height, let h be the height of the hill. Therefore:

tan 25 = h/(x + 740)

h = (x + 740)tan 25       (1)

tan 55 = h / x

h = x tan 55        (2)

Hence:

(x + 740)tan 25 = xtan 55

0.4663(x + 740) = 1.428x

0.4663x + 345.07 = 1.428x

0.9617x = 345.07

x = 359 ft.

h = xtan55 = 359 tan(55) = 512 ft.

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Answer:

hi

Step-by-step explanation:

28.5

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Step-by-step explanation:

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y=(-1)x+8

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\bf 8sin^4(x)+1-6sin^2(x)=0\implies 8sin^4(x)-6sin^2(x)+1=0

now, this is a quadratic equation, but the roots do not come out as integers, however it does have them, the discriminant, b² - 4ac, is positive, so it has 2 roots, so we'll plug it in the quadratic formula,

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