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Archy [21]
3 years ago
6

Express 0.68 as a percent.

Mathematics
2 answers:
ahrayia [7]3 years ago
7 0
The answer is 68%
:))))))))))))))))))))))))))))))))))
Nikolay [14]3 years ago
7 0

Answer:

68

Step-by-step explanation:

YOU JUST TAKE THE ZERO AND THE DECIMAL POINT OUT

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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
Mr. Zelman wants to give 50% of his comic book collection to his nephew Alex. If Mr. Zelman has 800 comic books, then how many w
BARSIC [14]

Mr. Zelman gave 400 books to his nephew

<em><u>Solution:</u></em>

Given that, Mr. Zelman wants to give 50% of his comic book collection to his nephew Alex

Mr. Zelman has 800 comic books

Number of books with Zelman = 800

Mr. Zelman wants to give 50% of books to Alex

Number of books given to nephew = 50 % of books of Zelman

Therefore, we have to find 50 % of 800

\rightarrow 50 \% \text{ of } 800

\rightarrow 50 \% \times 800\\\\\rightarrow \frac{50}{100} \times 800 = 400

Thus he gave 400 books to his nephew

4 0
3 years ago
If 52 cups of water were used in a Merry Berry Fruit Punch, how many cups of concentrate would also be used?​
BigorU [14]

May I ask what the ratio is? *Comment it below this post and i'll help you!* <3

7 0
3 years ago
True or False? When Samantha includes more batteries in her project, the current in her project increases. Current is the indepe
Semmy [17]
True....Independent = Test....therefore they are testing the current
7 0
3 years ago
Find the coordinates of the circumcenter of ABC with vertices A(1-11) B(8-5) C (1-5)
jasenka [17]

Answer:

use photomath

Step-by-step explanation:

8 0
3 years ago
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