3 years ago

Given that ABCD is a rhombus, what is the value of x?

Mathematics

1 answer:

choli [55]3 years ago

8 0

Answer:

A. 19.5

Step-by-step explanation:

Diagonals of a rhombus intersect at right angles. Therefore the angle opposite to AD = 90°.

Thus:

90° + x + 3x + 12 = 180° (sum of ∆)

Add like terms

102 + 4x = 180

Subtract 102 from each side

4x = 180 - 102

4x = 78

Subdue both sides by 4

x = 19.5

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2 years ago

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2 years ago

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Answer:

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3 years ago

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Mkey [24]

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2 years ago

If a circle has a circumference of 8.5 cm, what is the diameter of the circle to the nearest 0.1 cm?

tatiyna

Answer:

Step-by-step explanation:

2 $\pi$ r = circumference

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$\pi$ r = 4.25 cm

r = 1.352817 cm

d = 2r

d= 2.705

diameter = 2.7 cm

5 0

2 years ago