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nata0808 [166]
3 years ago
15

4.7x=2.5x+8.8.....plz help me I don't like math

Mathematics
2 answers:
astraxan [27]3 years ago
8 0
To solve for x,

4.7x = 2.5x + 8.8
minus 2.5x from both sides:
2.2x = 8.8
divide both sides by 2.2:
2.2x/2.2 = 8.8/2.2
simplify:
x = 4
nirvana33 [79]3 years ago
7 0
Answer is 4
#1 subtract the 2.5x and bring it to the other side (4.7x-2.5x=2.2x)
#2 then to get x by itself you divide both sides by 2.2 (2.2x=8.8/2.2)
#3 you get x by itself (x=4)
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A small metal bar, whose initial temperature was 10° C, is dropped into a large container of boiling water. How long will it tak
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Answer

According to newton law of cooling

\dfrac{d T}{dt} = k (T - T_a)

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now At Ta = 100

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now,

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k = ln{\dfrac{88}{90}}

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b) time taken to reach 98°C

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2 years ago
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3 years ago
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Answer:

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