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2 years ago

( Brainliest and thanks! ) Solve for x

Mathematics

2 answers:

timurjin [86]2 years ago

5 0

Answer:

22.5

Step-by-step explanation:

x+3x=90

4x=90

x=90/4

x=22.5

Tatiana [17]2 years ago

3 0

Step-by-step explanation:

x + 3x = 90

4x = 90

x = 22.5

............

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At the moment a hot cake is put in a cooler, the difference between the cake's and the cooler's temperature is 50° Celsius. This

dybincka [34]

Answer:

$D(t)=50(0.8)^t$

Step-by-step explanation:

We are given that

Initially the difference between the cake's and the cooler's temperature ,a=50 degree Celsius

$r=\frac{1}{5}/min$

We have to find the function that gives the temperature difference in degrees Celsius D(t).

We know that

$D(t)=a(1-r)^t$

Substitute the values

$D(t)=50(1-\frac{1}{5})^t=50(1-0.2)^t$

$D(t)=50(0.8)^t$

This is required function that gives the temperature difference in degrees Celsius.

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Dmitry_Shevchenko [17]

Yes your answer is correct

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3 years ago

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Delicious77 [7]

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tankabanditka [31]

The answer is x^4-6x^3+12x^2-28/x^2

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4 years ago

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Ede4ka [16]

Answer:

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Step-by-step explanation:

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