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DENIUS [597]
3 years ago
6

(((QUICK QUESTION-WILL GIVE BRAINLYEST)))

Mathematics
1 answer:
svetoff [14.1K]3 years ago
3 0

Given:

Point (7,12) is rotated 1260° counterclockwise about the origin.

To find:

The  x-coordinate of the point after this rotation.

Solution:

If a point is rotated 360 degrees then its coordinates remains unchanged.

If a point is rotated 180 counterclockwise about the origin degrees, then

(x,y)\to (-x,-y)

We know that,

1260^\circ=1080^\circ+180^\circ

1260^\circ=3\times 360^\circ+180^\circ

After 3\times 360^\circ rotation the coordinates of points remains same, i.e., (7,12). So, after that (7,12) is rotated 180° counterclockwise about the origin.

(7,12)\to (-7,-12)

The point (7,12) becomes (-7,-12) after rotation of  1260° counterclockwise about the origin.

Therefore, the x-coordinate of the required point is -7.

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A human body has about 6x10^2 times as many red blood cells
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Answer:

Humans are complex organisms made up of trillions of cells, each with their own structure and function.

Scientists have come a long way in estimating the number of cells in the average human body. Most recent estimates put the number of cells at around 30 trillion. Written out, that’s 30,000,000,000,000!

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7 0
3 years ago
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When working in trigonometry, you typically measure angles in
Neporo4naja [7]

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Radians

<em>Hope that helps!</em>

Step-by-step explanation:

8 0
3 years ago
Which is the factorization of 8x2 + 13x – 6
pashok25 [27]

Answer:

(8x−3)(x+2)

Step-by-step explanation:

Factor 8x2+13x−6

8x2+13x−6

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5 0
3 years ago
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Asher opened a savings account by making an initial deposit and setting up weekly automatic deposits as shown in the graph. How
Sergio [31]

Answer:

  • y = 7.5x + 20

Step-by-step explanation:

As per the graph, the y-intercept is 20 which is the initial amount.

Another marked point has coordinates (4, 50).

<u>The slope is:</u>

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<u>The equation of the line is:</u>

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$20 is the initial deposit and weekly deposit is $7.5

5 0
2 years ago
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Suppose y varies inversely with x. Write an equation if y=7 when x=-4
luda_lava [24]

Answer:

y = -28 ÷ x

Step-by-step explanation:

The standard format of a inversely proportional equation goes by the format of y = k ÷ x. The question asks us to write an equation if y = 7 when x = -4 and y varies inversely with x.

So we substitute the values y = 7 and x = -4 in the equation y = k ÷ x

K = constant, we have to work this out

7 = k ÷ -4

7 × - 4 = k

k = - 4 × 7

k = -28

k = -28 So then we put this back into the original y = k ÷ x to find our final equation which is y = -28 ÷ x

3 0
3 years ago
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