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3 years ago

Help pls …..——— :….—-

Mathematics

2 answers:

Scorpion4ik [409]3 years ago

6 0

Answer:

a) 10°

b) closest: 27 seconds

farthest: 9 seconds

c) 20 ft

Step-by-step explanation:

a) Angles around a point add up to 360°, therefore 1 rotation = 360°

If it makes one rotation in 36 seconds, then there are 10° per second as 360/36 = 10

b) closest to wall: this will be a 3/4 rotation:

3/4 of 36 seconds = 0.75 x 36 = 27 seconds

farthest from wall: 1/4 rotation:

1/4 of 36 = 0.25 x 36 = 9 seconds

c) 18 seconds is half of 36 seconds. Therefore, you will have made a 1/2 rotation. So you will be on the same horizontal plane as the start position, but on the opposite side of the circle (see attached diagram).

Therefore, you will be 20ft away from the wall (shown in blue).

LenaWriter [7]3 years ago

4 0

Answer:

36s ~ 360º

1s ~ ?

so 1 * 360 / 36 = 10º

36*3/4=27s (closest)

36*1/4=9s (farthest)

20ft

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Answer:

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Step-by-step explanation:

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2 years ago

Three numbers X, Y, and Z are in the ratio 2:7:8. If 12 is subtracted from Y, then three numbers form a geometric sequence (in t

melomori [17]

Answer:

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Step-by-step explanation:

The ratio units will form a geometric sequence if the middle one is the square root of the first and last:

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4 years ago

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seraphim [82]

Answer:

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Step-by-step explanation:

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3 years ago

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Alina [70]

Answer:

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Step-by-step explanation:

To know which of the equations represent the relationship between x and y, you need to substitute the x and y values into the equation. If when the equation is solved, the left-hand and right-hand side of the equation equal each other and hence the equation is true, then the equation must be correct in expressing the relationship between the x and y values. If not, then it is not correct.

As this question is only dealing with linear equations, we know that the gradient of the line is constant and hence the rate of change in x and y values is constant. Therefore, we can choose to substitute any of the given combinations of x and y values into the equation to obtain the correct equation. As it is easier to use smaller numbers for smaller calculations, we'll use the first combination of x = 1 and y = 4 .

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However, as this equation has a constant not equal to 1 in front of the x variable and hence a different gradient to the other equations, we will substitute the second combination of x and y values.

( 5 ) = 3 ( 2 ) + 1

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Therefore, equation is false / incorrect.

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( 4 ) = ( 1 ) + 1

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Therefore, equation is false / incorrect.

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( 4 ) = ( 1 ) + 3

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Therefore, equation is true / correct.

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yaroslaw [1]

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