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Mekhanik [1.2K]

3 years ago

13

Szklanka ma pojemnóść 250ml czyli 250cm³. Ile szklanek można napełnić wodą z litrowej butelkki

1 answer:

Gnom [1K]3 years ago

8 0

Answer:

75cm

Step-by-step explanation:

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Translate to an algebraic statement.<br> "The quotient of twice a number and 7 is 20."

Genrish500 [490]

<u>Answer:</u>

Translation: 2x/7 = 20

<u>Step-by-step explanation:</u>

<em>When we listen to the word "quotient", it means the solution to a division problem. </em>
<em>An unknown number that has been multiplied by 2 is in the numerator because it came before the 7 in the statement. </em>
<em>The number "7" is in the denominator because it came after the 2x in the statement. </em>
<em>The word "is" represents an equal sign.</em>
<em>The solution to the division problem (quotient) is 20. </em>

<u><em>If we put these clues together, we get 2x/7 = 20 as our translated equation.</em></u>

<u>Hence, our algebraic statement is 2x/7 = 20. The key is to listen to the statement. </u>

$BrainiacUser1357$

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3 years ago

Solve this question please what is 2 +2

kkurt [141]

Answer:

4

Step-by-step explanation:

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3 years ago

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A typical cup of coffee contains about 100 mg of caffeine and every hour approximately 16% ofthe amount of caffeine inthe body i

Over [174]

Answer:

a) $\frac{dC}{dt} = rC$

And for this case we can rewrite the model like this:

$\frac{dC}{C} = r dt$

If we integrate both sides we got:

$ln C = rt + k$

If we use exponentials for both sides we got:

$C = e^{rt} e^k = C_o e^{rt}$

For this case $C_o = 100 mg$ and r = -0.16

So then our model would be given by:

$C(t) = 100 e^{-0.16 t}$

Where t represent the number of hours

b) $C(5) = 100 e^{-0.16*5}= 44.9329$

Step-by-step explanation:

Part a

For this case we can assume the proportional model given by:

$\frac{dC}{dt} = rC$

And for this case we can rewrite the model like this:

$\frac{dC}{C} = r dt$

If we integrate both sides we got:

$ln C = rt + k$

If we use exponentials for both sides we got:

$C = e^{rt} e^k = C_o e^{rt}$

For this case $C_o = 100 mg$ and r = -0.16

So then our model would be given by:

$C(t) = 100 e^{-0.16 t}$

Where t represent the number of hours

Part b

For this case we can replace the value t=5 into the model and we got:

$C(5) = 100 e^{-0.16*5}= 44.9329$

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3 years ago

What is the square root of 10, and 9?

Orlov [11]

The answer is 3 and 3.16227766017

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3 years ago

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Select the equivalent expression.

ANEK [815]

Answer:

c

Step-by-step explanation:

$\frac{1}{9^{2} }$ =1/81

$9^{\frac{1}{2} }$ =3

$\frac{1^{2} }{9}$ = $\frac{1}{9}$

$9^{-2}$ =1/81

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3 years ago