3 years ago

Card 5 of 9

Mathematics

1 answer:

Delicious77 [7]3 years ago

6 0

Answer:

<5 of

>9 of

<4of

jadi =18 of

Step-by-step explanation:

sorry ya kalo jawaban nya salah

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How to solve h when equation is |3h+1|=7h

tatuchka [14]

Answer:

h= 1/4 is your answer.

Step-by-step explanation:

What you do is get h by itself.

|3h+1|=7h

-4h+1=0

-4h=-1

h=1/4

h= 1/4 is your answer.

3 0

3 years ago

The temperature of a cup of coffee varies according to Newton's Law of Cooling: dT dt equals negative k times the quantity T min

Maslowich

Answer:

67.3°C

Step-by-step explanation:

A = 25, T(0) = 100, T(1) = 90, find T(4)

dT/dt = -k(T - A)

d(T - A)/dt = -k(T - A)

d(T - A)/(T - A) = -k dt

ln(T - A) = lnC - kt

$T(t) -A=Ce^{-kt}\\T(t) = A + Ce^{-kt} = 25 + Ce^{-kt}\\T(0) = 25 + C = 100\\C=75$

$T(t) = 25 + 75e^{-kt}\\T(1) = 25 + 75e^{-k} = 90\\75e^{-k} = 65\\e^{-k} = \frac{65}{75}, k = ln\frac{75}{65} = 0.1431\\T(t) = 25+75e^{-0.1431t}\\T(4) = 25+75e^{-0.1431\times4} = 67.3$

4 0

2 years ago

What is the value of the 4 in 3.954

antiseptic1488 [7]

Answer:

The value is ones lol thats easy mark me brainliest plzzz

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

the cost of two sound systems were decreased by 10 the orginal cost of the systems were 90 dollars and 60 dollars which had a gr

Alex Ar [27]

I would say 60 cause 10% of 90 is 9 which is a difference of 81 while 10% of 60 is 6 which is a difference of 54.

3 0

3 years ago

Henry can write 5 pages of his novel in 3 hours at this rate how many pages can Henry write in 8 hours

e-lub [12.9K]

Answer:

13.3 pages.

Step-by-step explanation: Hopefully this helped a lot !

3 0

3 years ago