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Semmy [17]
3 years ago
12

Which pair of angles are vertical angles?

Mathematics
2 answers:
RUDIKE [14]3 years ago
5 0
The answer is C because the angle equal each other.

maria [59]3 years ago
4 0

Answer:

Option C is correct that is  ∠ERT and ∠MRC are vertically opposite.

Step-by-step explanation:

Vertical angles are the angles that are exactly opposite to each other in crossed lines.

Here, ∠ERT and ∠MRC are the two angles that are  vertically opposite.

Therefore, Option C is correct.  

Rest all three option A,B and D are discarded.


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How do you sketch a graph of a function?
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The graph of a function can be sketched by plotting points.

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4 0
1 year ago
4) A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is
lisov135 [29]

Answer:

l=0.1401P\\

w =0.2801P

where P = perimeter

Step-by-step explanation:

Given that a window is in the form of a rectangle surmounted by a semicircle.

Perimeter of window =2l+\pid/2+w

P= 2l+3.14 (w/2)+w

Or P = 2l+2.57w\\l = \frac{P-2.57w}{2}

To allow maximum light we must have maximum area

Area = area of rectangle + area of semi circle where rectangle width = diameter of semi circle

A=lw +\pi \frac{w^2}{8}

A=lw +\pi \frac{w^2}{8}\\A=w*\frac{P-2.57w}{2}+0.3925w^2\\2A= Pw-2.57w^2+(0.785w^2)\\2A' = P-5.14w+1.57 w\\2A" =-5.14+1.57

Hence we get maximum area when i derivative is 0

i.e. P-5.14w+1.57 w=0\\3.57w =P\\w = \frac{P}{3.57} =0.2801P

l = \frac{P-2.57w}{2}\\l = 0.1401P

Dimensions can be

l=0.1401P\\w =0.2801P

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3 years ago
Kira has $40 to spend and used $20 to buy a new pair of jeans. Which integer best represents the situation of spending $20?
pishuonlain [190]
-20 because 40 is a positive and spent is negative
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