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hjlf
3 years ago
8

Find the measure of angle Y.

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
5 0

Answer:

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Step-by-step explanation:

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Please help with this area
agasfer [191]

Answer:

L = 7 W= 12

Step-by-step explanation:

Ok so we already know that a rectangle is not even so the numbers will have to be 2 diff numbers.

The length is 5 feet less then width

w*l=  84

1* 84         2* 41        3*28    4*21    6*14    7*12

84-1           41-2        28-3     21-4     14-6   12-7

83              39           25          19        8         5

So,

your equation would be l*w = 7*12

7 0
3 years ago
Newton's law of cooling is:
Mnenie [13.5K]

Answer:

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

So it would takes approximately 6.9 hours to reach 32 F.

Step-by-step explanation:

For this case we have the following differential equationÑ

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

We can reorder the expression like this:

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

We can use the substitution w = u-T and dw =du so then we have:

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

IF we integrate both sides we got:

ln |w| = -kt +C

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:

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

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

So it would takes approximately 6.9 hours to reach 32 F.

7 0
4 years ago
12<br>121 °<br>9<br>can it make a triangle if so what the area ?<br>​
charle [14.2K]

Answer:

no it can not

Step-by-step explanation:

Triangle is always 180° in total.

7 0
3 years ago
Read 2 more answers
Someone plz help. s. help
seraphim [82]
72 yellow candies in all

6 0
3 years ago
Read 2 more answers
Diego says tha the product of 0.51 x 2.427 will have five decimal places. Is Diego correct. Explain
krek1111 [17]
Correct. 0.51 × 2.427 = 51 × 2427 / 10×1000
5 0
3 years ago
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