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loris [4]
3 years ago
5

(8x+4) - (3x-12) A. -5x - 16 B. 11x - 8 C. 5x + 16 D. 5x - 16

Mathematics
2 answers:
Paha777 [63]3 years ago
8 0
(8x+4) - (3x-12)
8x-3x = 5x
4-12= -8
5x-8
dalvyx [7]3 years ago
4 0
Work shown above! Answer is C!

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Prove that the figure is a parallelogram. If so, classify the parallelogram. Be specific and justify your answer.
sesenic [268]

Answer:

Step-by-step explanation:

If it is a parallelogram the opposite sides will a have the same slope.

Using the diagram  we see from the coordinates of A and B:

Slope of AB = (5 - -1)/(-1 - -5)

= 6/4

= 3/2.

In the same way

slope of CD = (2 - -4) / (1 - -3)

= 3/2.

So AB and  CD can be shown to be parallel.

Similarly the lines BC and AD are parallel.

So the figure is a parallelogram

Finding the perimeter (counting the units between the points):

Perimeter = 2AB + 2BC

By Pythagoras:

AB =   sqrt (6^2 + 4^2) = sqrt 52

BC = sqrt (3^2 + 2^2) = sqrt 13

So Perimeter = 2sqrt52 + 2sqrt13

= 4sqrt13 + 2 sqrt13

= 6sqrt13

or 21.63 unit^2 to 2 decimal places.

Area = sqrt52 * perpendicular distance between the lines AB and CD.

8 0
3 years ago
Which of these equations shows the correct relationship between x and y?
Leto [7]
X+y=180
they are adjacent angles
x=50
y=130
7 0
2 years ago
titian reads 40 pages of her book every night for x number of nights. write an expression that represents the number of pages sh
Rom4ik [11]
40(x)=total pages. i believe
4 0
3 years ago
Can someone please help?
Scorpion4ik [409]
It’s the third one. .
8 0
3 years ago
Read 2 more answers
LMNP is inscribed in circle R. If the measure of angle P = 57°, and angle L = angle N, what are the measures of angle M, angle L
eimsori [14]

Answer:

<h2>         m∠M = 123° ;  m∠L = m∠N = 90° </h2>

Step-by-step explanation:

A quadrangle LMNP is inscribed in circle which means:

m∠L + m∠N = m∠P + m∠M = 180°

m∠P + m∠M = 180°

57° + m∠M = 180°

  m∠M = 123°

m∠L + m∠N = 180°       and    m∠L + m∠N

m∠L + m∠L = 180°  

2×m∠L = 180°

m∠L = 90°

m∠N = m∠L = 90°

5 0
3 years ago
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