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fenix001 [56]
3 years ago
9

What is the decimal expansion of the following fraction 1/5 A.0.2 B.1.5 C.0.2 D.0.15

Mathematics
1 answer:
hoa [83]3 years ago
3 0
The answer is A) 0.2
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Simplify: (–4) • (9) – (5) • (–2)
Likurg_2 [28]
-4 x 9 - (-10)

= - 45 + 10
= - (45 - 10)
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Rule: Negative times positive is negative; Negative times negative is positive
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3 years ago
1) Given: circle k(O), ED= diameter ,m∠OEF=32°, m(arc)EF=(2x+10)° Find: x
qaws [65]

1. The major arc ED has measure 180 degrees since ED is a diameter of the circle. The measure of arc EF is (2x+10)^\circ, so the measure of arc DF is

m\widehat{DF}=360^\circ-180^\circ-(2x+10)^\circ=(170-2x)^\circ

The inscribed angle theorem tells us that the central angle subtended by arc DF, \angle DOF, has a measure of twice the measure of the inscribed angle DEF (which is the same angle OEF) so

m\angle DOF=2m\angle OEF=64^\circ

so the measure of arc DF is also 64 degrees. So we have

170-2x=64\implies106=2x\implies\boxed{x=53}

###

2. Arc FE and angle EOF have the same measure, 56 degrees. By the inscribed angle theorem,

m\angle EOF=2m\angle EDF\implies56^\circ=2m\angle EDF\implies m\angle EDF=28^\circ

Triangle DEF is isosceles because FD and ED have the same length, so angles EFD and DEF are congruent. Also, the sum of the interior angles of any triangle is 180 degrees. It follows that

m\angle EFD+m\angle EDF+m\angle DEF=180^\circ\implies\boxed{m\angle EFD=76^\circ}

Triangle OFE is also isosceles, so angles EFO and FEO are congruent. So we have

m\angle EFO+m\angle FEO+m\angle EOF=180^\circ\implies\boxed{m\angle EFO=62^\circ}

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She got 41 right because she only missed 9
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Please help me i think i finally uploaded the right file now
KengaRu [80]

Answer:

y = 35x

and 350

Step-by-step explanation:

This problem's quite similar to the last question with the only difference being the 2nd row changed

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How to Increase 8 by 9.4%
Fed [463]

Answer:

75.2

Step-by-step explanation:

multiple 8 by 9.4

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