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3 years ago

If ZC and ZD are supplementary and mZC = 67°, find mZD

Mathematics

1 answer:

arsen [322]3 years ago

8 0

Answer:

m∠ZD = 113°

Step-by-step explanation:

ZC and ZD are supplementary (180°)

m∠ZD = 180° - m∠ZC

m∠ZD = 180° - 67°

m∠ZD = 113°

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Answer:

Step-by-step explanation:

l = length

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We know the length is twice the breadth, therefore l = 2b

We also know that the perimeter p = 60m and can also be expressed as a sum of its sides where p = l + l + b + b = 60 which simplified is:

60 = 2l + 2b

Now we have 2 variables, but thankfully we were given a ratio (l = 2b) relating the two. Substituting 2b in for l gives us:

60 = 2(2b) + 2b = 4b + 2b = 6b

60 = 6b

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