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babymother [125]
1 year ago
12

AB = 10 in; AD = 6 in A= 30sqrt3 in2 30 in2 60 in2

Mathematics
1 answer:
Ratling [72]1 year ago
8 0

Answer: 30

Step-by-step explanation:

If we were to draw diagonal BD, then we would create two congruent triangles, and we could find the area of each using the formula A=\frac{1}{2} ab \sin C.

However, since there are two triangles, we can double this, giving us A=ab \sin C.

So, the area is A=(10)(6)(\sin 30^{\circ})=\boxed{30}

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2 years ago
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krek1111 [17]

Answer:

# of 20cent stamps = 8

Step-by-step explanation:

Let the  number 20cent stamps be = x

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That is, 0.20x + 0.60y = 8.80 ------------- ( 2 )

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Substitute x in  ( 1 ) => x  +  y = 20

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                                            x = 8

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3 years ago
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