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dolphi86 [110]
3 years ago
6

45 points! Help me on the attached file, please :D

Mathematics
1 answer:
atroni [7]3 years ago
8 0
It is B.Scale factor=New length/old length=8/2=4
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The length of a rectangle is 7 cm more than 4 times the width. If the perimeter of the rectangle is 44 cm, what are its dimensio
Alexxandr [17]

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3 by 19

Step-by-step explanation:

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Help Please & Thanks
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I am not sure but I think it’s c
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What happens to the graph of a trigonemetric function if the amplitude, a, is negative?
Tju [1.3M]

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Step-by-step explanation:

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3 years ago
Factorise the following : ​
Free_Kalibri [48]

Answer:

(3x+4b)(a-2y)

Step-by-step explanation:

(3ax-6xy)+(8by-4ab)

3x(a-2y) -4b(-2y+a)

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4 0
3 years ago
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The measure of an angle is three more than twice its supplement. What is the measure of the angle?
Zinaida [17]

Answer: the angle is 1°+n×120°

1°, 121°, 241°


Step-by-step explanation:

Angles are taken modulo 360°, so 363° = 3°.

Angle plus supplement gives 180°.

Let a be angle, s be supplement of a.

So s = 180-a. Given a = 3 + 2s

a = 3 + 2(180 - a)

a = 3 + 360 - 2a = 363 - 2a


3a = 363° or 3° or 723°

a = 121° or 1° or 241°


a = 1°

s = 179°

2s = 358°

2s+3 = 361° = 1° (modulo 360)


a = 121°

s = 180-121 = 59°

2s = 118°

2s + 3 = 121°, as required.


a = 241°

s = 360+180-241 = 540-241 = 299

2s = 598

2s + 3 = 601 = 241 (modulo 360)


7 0
3 years ago
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