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3 years ago

PLEASE HURRY!!! TIMED!!!! WILL GIVE BRAINLIEST!!!

Mathematics

2 answers:

fgiga [73]3 years ago

7 0

Answer:

7.608

Step-by-step explanation:

An irrational number is any number which can't be written as a fraction this way. For example, pi and the square root of two cannot be expressed as a fraction of two whole numbers, so they are both irrational.

if we make the respective accounts in the first and second problem we will see that they are irrational numbers

the fourth is a periodic number, which falls within the irrational

the only rational is the third

musickatia [10]3 years ago

5 0

Answer:-5 4/11

Step-by-step explanation:

A rational number is a number that can be express in simple fraction.

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3 years ago

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Ivanshal [37]

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3 years ago

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OlgaM077 [116]

The frame of film is actually 50 mm high, but it looks 16 m high on the screen.

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3 years ago

write an expression that represents the cost of one carful of nonstudents ($12 per person). Use x as the number of people who ri

gayaneshka [121]

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3 years ago

Q1 [5]

ValentinkaMS [17]

Answer:

The required drawing showing the cliff, river, and tower as well as the details in the question is attached, please find alongside the answer

The width of the river is approximately 51.55 meters

Step-by-step explanation:

The height of the observation tower = 11 meters

The angle of elevation of the cliff top and the opposite side of the river = 20°

The angle of elevation of the tower top and the opposite side of the river = 30°

Therefore, by sine rule, we have;

h/sin(20) = w/sin(60)

11/sin(10) = length, l/sin(60)

l = sin(60) ×11/sin(10) ≈ 54.86 meters

w = l × cos (20) = 54.86 meters × cos (20) ≈ 51.55 meters

The width, w, of the river is approximately 51.55 meters.

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3 years ago