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bezimeni [28]
4 years ago
12

In △DEF, DE = 5 and m∠F=55. Find FE.

Mathematics
2 answers:
Marizza181 [45]4 years ago
7 0
Check the picture below.

make sure your calculator is in Degree mode.

Elden [556K]4 years ago
3 0
SOH CAH TOA

tan(55°) = 5/(FE)
FE = 5/tan(55°)
FE = 3.5
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Answer:

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12/16-3/8

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4 years ago
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AURORKA [14]

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Step-by-step explanation:

2 x 3 =6

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3 years ago
The following function is probability mass function. f left-parenthesis x right-parenthesis equals StartFraction 2x plus 1Over 2
lora16 [44]

Answer:

a) Mean  = 2.6

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Step-by-step explanation:

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\mu = \displaystyle\sum x_iF(x_i)\\\\=0(\dfrac{1}{25}) + 1(\dfrac{2+1}{25}) + 2(\dfrac{4+1}{25}) + 3(\dfrac{6+1}{25}) + 4(\dfrac{8+1}{25})\\\\=\dfrac{3+10+21+36}{25} = \dfrac{70}{25} = 2.8

b) Variance of the random variable

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6 0
3 years ago
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murzikaleks [220]

Answer:

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5x - 60  = 180                     Add 60 to both sides.

5x = 180 + 60

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x = 240/5

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Now go to 2x + 4.

x = 48

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7 0
3 years ago
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Mashcka [7]
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3 years ago
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