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gtnhenbr [62]
10 months ago
13

Roger could fit seven action figures on each shelf in his room. His room has two shelves. How many action figures total could hi

s shelves hold?
Mathematics
1 answer:
Leno4ka [110]10 months ago
8 0

If 7 action figures are on each shelf

Then

in 2 shelves, there are

2x7 = 14 figures

Answer is

shelves hold 14 figures

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2 years ago
Newton's law of cooling is:
Mnenie [13.5K]

Answer:

t = \frac{ln(\frac{21}{59})}{-0.15}=6.887 hr

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Step-by-step explanation:

For this case we have the following differential equationÑ

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We can reorder the expression like this:

\frac{du}{u-T} = -k dt

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\frac{dw}{w} =-k dt

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If we apply exponential in both sides we got:

w = e^{-kt} *e^c

And if we replace w = u-T we got:

u(t)= T + C_1 e^{-kt}

We can also express the solution in the following terms:

u(t) = (T_i -T_{amb}) e^{kt} +T_{amb}

For this case we know that k =-0.15 hr since w ehave a cooloing, T_{i}= 70 F, T_{amb}=11F, we have this model:

u(t) = (70-11) e^{-0.15t} +11

And if we want that the temperature would be 32F we can solve for t like this:

32 = 59 e^{-0.15 t} +11

21=59 e^{-0.15 t}

\frac{21}{59} = e^{-0.15 t}

If we apply natural logs on both sides we got:

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7 0
3 years ago
Helppppoop 5th grade work
Anettt [7]

300

divide 3000 by 10 to get a tenth of 3000

6 0
3 years ago
Read 2 more answers
What is the volume of a rectangular prism that has a length, width, and height of 1/2 m, 1/4 m, and 2/3 m, respectively?
Talja [164]
V = L * W * H
V = (1/2)(1/4)(2/3) 
V = (1 * 1 * 2) / (2 * 4 * 3)
V = 2/24 reduces to 1/12 m <===
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3 years ago
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