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Colt1911 [192]
3 years ago
10

If two lines are perpendicular, then they form right angles. If two lines meet at 90 angles. then they are perpendicular. Two li

nes meet at a 90 angle.
a
Conclusion: The lines are perpendicular and meet at a 90 angle.

b
Conclusion: The lines are parallel.

c
Conclusion: The lines form a right angle.

d
Conclusion: The lines meet at a 90 angle.
Mathematics
2 answers:
Luba_88 [7]3 years ago
5 0
The lines are Parallel
Galina-37 [17]3 years ago
3 0

Answer:

A — conclusion: the lines are perpendicular and meet at a 90 angle

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The top and bottom margins of a poster are 6 cm and the side margins are each 8 cm. If the area of printed material on the poste
Degger [83]

Answer:

The total height and width of the poster is approximately 28.93 and 38.57.

Step-by-step explanation:

Consider the provided information.

Let us consider the width and length of the printed part of the poster is x and y respectively.

For better understanding refer the figure 1:

The area of the printed part is 382 cm²

Area = xy = 382

y = 382/x

Now the total height of the poster is y + 6 + 6 = y + 12

Total width of the poster is x + 8 + 8 = x + 16

Thus the total area of the poster is:

A = (x + 16)(y + 12)

Now substitute the value of y in above equation.

A = (x+16)(\frac{382}{x}+12)

A = 382+12x+\frac{6112}{x}+192

A = 12x+\frac{6112}{x}+574

Now differentiate the above equation with respect to x.

A' = 12-\frac{6112}{x^2}

Now, substitute A'= 0 and solve for x.

0 = 12-\frac{6112}{x^2}

12=\frac{6112}{x^2}

x^2=\frac{6112}{12}

x=22.57 Ignore the negative value of x as width can't be a negative number.

Now find A''

A'' = \frac{2(6112)}{x^3}

Here A" is positive for x>0 and x = 22.57 is minimum.

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Substitute the value of x in y = 382/x

y = 382/22.57 = 16.93

The total height of the poster is y + 6 + 6 = y + 12 = 16.93 + 12 = 28.93

Total width of the poster is x + 8 + 8 = x + 16 = 22.57 + 16 = 38.57

Hence, the total height and width of the poster is approximately 28.93 and 38.57.

6 0
3 years ago
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At a NBA, the ratio of the score of team A to the score of team B was 16:21. If team A got 80 points, how many points did team B
wariber [46]

Answer:

I answered this for you already :)

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3 years ago
Lina's green pepper plant was 32.65 cm tall in June. During the months of July, August, and September the plant grew 2.6 cm ever
butalik [34]

Answer:

40.45 cm

Step-by-step explanation:

Length of Lina's green pepper plant = 32.65 cm

It grows 2.6 cm during the months of July, August, and September.

Length at the end of July = 32.65 cm + 2.6 cm = 35.25  cm

Length at the end of August = 35.25  cm + 2.6 cm = 37.85  cm

Length at the end of September = 37.85 cm + 2.6 cm = 40.45 cm

So, its length will become 40.45 cm at the end of September.

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Line l is parallel to line m, if the measure of <6 is 75° what is the measure of <4?
atroni [7]

Answer:

∠4 = 75°

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Alternate interior angles are equal.

∠6 and ∠4 are alternate interior angles.

∠6 = ∠4 = 75°

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3) A: x-3

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but hope this helps!
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