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son4ous [18]
3 years ago
15

fisrt second and the third terms of proportion are respectively 7 , 14 and 25 . Find its fourth term​

Mathematics
2 answers:
choli [55]3 years ago
6 0

Answer:

Let the fourth term be x

7/14=25/x

7x=14*25

x=350/7

x=50

Therefore the fourth term is 50

puteri [66]3 years ago
3 0

Answer:

Check whether the two ratios form a proportion or not: (i) 6 : 8 and 12 : 16; (ii) 24 : 28 ... 3. The first, third and fourth terms of a proportion are 12, 8 and 14 respectively. ... 5. If a : b = 4 : 5 and b : c = 6 : 7; find a : c. Solution: a : b = 4 : 5. ⇒ a/b = 4/5.

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After heating up in a teapot, a cup of hot water is poured at a temperature of
xxTIMURxx [149]

Answer:

  • k ≈ 0.060
  • T(4) ≈ 178 °F

Step-by-step explanation:

The desired formula parameters for Newton's Law of Cooling can be found from the given data. Then the completed formula can be used to find the temperature at the specified time.

__

<h3>Given:</h3>

  T(t)=T_a+(T_0-T_a)e^{-kt}\\\\T_a=68,\ T_0=208,\ (t,T)=(3,185)

<h3>Find:</h3>

  k

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<h3>Solution:</h3>

Filling in the given numbers, we have ...

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  k = ln(117/140)/-3 ≈ 0.060

__

The temperature after 4 minutes is about ...

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After 4 minutes, the final temperature is about 178 °F.

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