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mamaluj [8]
2 years ago
7

Find the selling price is a store pays $12 for a book and the markup is 25%.

Mathematics
2 answers:
Brut [27]2 years ago
8 0

Answer:

$15

Step-by-step explanation:

use a calculator and type 25%x12 and you will get 3

so 3 is 25% of 12

add 12 and 3 together to get your answer. $15

koban [17]2 years ago
5 0

Answer:

$15

Step-by-step explanation:

$12 + 25% = $15

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-21.8+18.3
or 18.3-21.8
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3 years ago
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A bacteria culture initially contains 100 cells and grows at a rate proportional to its size. After an hour the population has i
bija089 [108]

Answer: \bold{a)\ P(t)=P_o\cdot e^{t\cdot ln(2.7)}}

               b) 5314

               c) ln 2.7

               d) 4.6 hrs

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

P(t) = P_o\cdot e^{kt}\\\\\bullet \text{P(t) is the number of bacteria after t hours} \\\bullet P_o\text{ is the initial number of bacteria}\\\bullet \text{k is the rate of growth}\\\bullet \text{t is the time (in hours)}\\\\\\270=100\cdot e^{k(1)}\\2.7=e^k\\ln\ 2.7=\ln e^k\\\boxed{ln\ 2.7=k}\\\\\text{So the equation to find the number of bacteria is: }\boxed{P(t)=P_o\cdot e^{t\cdot ln(2.7)}}\\\\\\P(4)=100\cdot e^{4\cdot ln(2.7)}\\.\qquad =\boxed{5314}

10,000=100\cdot e^{t\cdot ln(2.7)}\\100=e^{t\cdot ln(2.7)}\\ln\ 100=ln\ e^{t\cdot ln(2.7)}\\ln\ 100=t\cdot ln(2.7)\\\dfrac{ln\ 100}{ln\ 2.7}=t\\\\\boxed{4.6=t}

4 0
3 years ago
What’s the answer to number 1?
Darya [45]

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Step-by-step explanation:

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7 0
3 years ago
Rewrite the following logarithmic expression as an exponential expression
Mumz [18]

\huge{ \mathrm{  \underline{ Answer }\:  \:  ✓ }}

The logarithmic expression for the given exponential expression is :

\large\boxed{ \mathrm{ log_{4}(b )= a}}

_____________________________

\mathrm{ ☠ \: TeeNForeveR \: ☠}

4 0
3 years ago
Pls help me first get 10 you know
Luba_88 [7]

Option D, 63 cm

Explanation:

The scale of model is of local park  is

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cm

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7 0
2 years ago
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