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Nataliya [291]
3 years ago
7

In parallelogram ABCD, AB=7cm and the perimeter of ABCD is 30cm. What is the length of AD?

Mathematics
1 answer:
Drupady [299]3 years ago
3 0

Answer:

8cm

Step-by-step explanation:

Ab=7cm

Since opposite sides are equal

Cd=7cm

7cm + 7cm = 14cm

Perimeter equals 30cm

:.30cm - 14cm =16cm (bc+ad)

Since both bc and ad are equal,

16cm/2=8cm

:.ad=8cm

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inysia [295]

Answer:

\displaystyle a_8=142,11\ mg

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The problem describes Georgie took 275 mg of the medicine for her cold in the first hour and that in each subsequent hour, the amount of medicine in her body is 91% (0.91) of the amount from the previous hour. It can be written as

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