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natali 33 [55]
1 year ago
15

Question 1 (3 points)

Mathematics
1 answer:
rewona [7]1 year ago
6 0

Answer:

Step-by-step explanation:

hello : y = -2x - 5

          y = 2/3x + 3

means :  -2x-5 = 2/3 x+3

-6x-15 = 2x +9

-8x=24   so : x = -3

put the value for : x in the first equation :y = -2(-3)-5  =1

the  ordered pair (-3;1) is solution

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A rectangle has length 127.3 cm and width 86.5 cm, both correct to 1 decimal place. Calculate the upperbound and the lowerbound
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Answer:

Correct to 1dp

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86.5 cm = 87.0 cm

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127.0 cm = 127.05 cm

87.0 cm = 87.05 cm

Lower Limits:

127.0 cm = 126.95 cm

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upper limit of perimeter of rectangle:

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lower limit of perimeter of rectangle:

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= 2(126.95 + 86.95)

= 2(213.9)

= 427.8 cm

therefore;

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