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3 years ago

-68C 57C How many degrees separate these two temperatures

Mathematics

2 answers:

mafiozo [28]3 years ago

5 0

Answer:

wait what the letter look weird ?

Step-by-step explanation:

Irina-Kira [14]3 years ago

5 0

Answer:

125

Step-by-step explanation:

57 - -68 = 125 as you find the difference between two numbers by subtracting the smaller number from the larger number.

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A line passes throught the point (-4,7) and has a slope of 2/3. Write an equation in point slope form for this line.

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Equation in point slope form of a line:
y-y₀=m(x-x₀)
m=slope

(x₀,y₀)=(-4,7)
m=2/3
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3 years ago

92x12 rounder both factors

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

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A quantity P is an exponential function of time I, such that P = 160 when t = 6 and P = 150 when I = 4. Use the given informatio

Klio2033 [76]

Answer:

k = 0.032
P0 = 131.836

Step-by-step explanation:

Perhaps you want to use the points (t, P) = (4, 150) and (6, 160) to find the parameters P0 and k in the equation ...

$P(t)=P_0\cdot e^{kt}$

We know from the given points that we can write the equation as ...

$P(t)=150\left(\dfrac{160}{150}\right)^{(t-4)/(6-4)}=150\left(\dfrac{16}{15}\right)^{\frac{t}{2}-2}\\\\=150\left(\dfrac{16}{15}\right)^{-2}\times\left(\left(\dfrac{16}{15}\right)^{\frac{1}{2}}\right)^t$

Comparing this to the desired form, we see that ...

$P_0=150\left(\dfrac{16}{15}\right)^{-2}\approx 131.836\\\\e^{k}=\left(\dfrac{16}{15}\right)^{1/2}\rightarrow k=\dfrac{1}{2}(\ln{16}-\ln{15})\approx 0.0322693$

So, the approximate equation for P is ...

$P(t)=131.836\cdote^{0.032t}$

And the parameters of interest are ...

k = 0.032
P0 = 131.836

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3 years ago