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Ivahew [28]
3 years ago
13

If ABC and EDC are similar, what is the value of x? A

Mathematics
1 answer:
abruzzese [7]3 years ago
3 0

Answer:

x = 15

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

BC/DC = EC/AC , substitute values

3x×5/32 - 5x-5/56 ( cross- multiply )

56(3x - 5) = 32(5x - 5) ← distribute and simplify both sides

168x - 280 = 160x - 160 ( subtract 160x from both sides )

8x - 280 = - 160 ( add 280 to both sides )

8x = 120 ( divide both sides by 8 )

x = 15

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Mei Mei invested $1700 in an account that pays 3% interest compounded annually.
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Answer:

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Step-by-step explanation:

Use compound interest formula:

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P = 1700, r = 0.03, n = 1, t = 16

Plug in numbers:

A = 1700(1 + \frac{0.03}{1})^{(1)(16)}

Simplify:

A = 1700(1.3)^{16

Use calculator:

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