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beks73 [17]
3 years ago
10

If BCD ~ GEF, find BD​

Mathematics
2 answers:
Kruka [31]3 years ago
5 0

Answer:

la esquina prestado y si no entiende pregúntale al profe

Masja [62]3 years ago
4 0

Answer:

19

Step-by-step explanation:

if the triangles are similar then EG/BC = FG/BD

51/(x+4) = 57/(2x-7) cross multiply expressions

102x - 357 = 57x + 228

102x - 57x = 228 + 357

45x = 585 divide both sides by 45

x = 13

BD = 2x -7 and 13×2 - 7 = 19

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20

Step-by-step explanation:

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What is 26.5 rounded to the nearest hundreds
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5 rounds up 6 rounds up 2 stays the same what is the answer?
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6 miles in 24 minutes. find the average rate in miles per hour
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7 0
3 years ago
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Match the following items by evaluating the expression for x=-3.
nika2105 [10]
-3^-3=1/(-3^3)=-1/27 maybe a typo, because you don't have this as an option
could have been -3^-2=1/(-3^2)=1/9

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4 0
2 years ago
Read 2 more answers
A student records the repair cost for 17 randomly selected stereos. A sample mean of $52.33 and standard deviation of $21.44 are
Dafna11 [192]

Answer:

90% confidence interval is (43.25, 61.41)

Step-by-step explanation:

Given that,

n = 17

Mean, \bar{x} = 52.33

Standard deviation, \sigma = 21.44

∝ = 0.10

Now,

Confidence interval = \bar{x}  ± t_{\frac{\alpha }{2}, n-1} [\frac{\sigma}{\sqrt{n} } ]

                                 = 52.33 ± 1.7646 [ 21.44 / √17 ]

                                 = 52.33 ± 9.0791

So,

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So,

90% confidence interval is (43.25, 61.41)

Also,

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Upper end-point = 61.41

4 0
2 years ago
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