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dusya [7]
3 years ago
11

While working on his science fair project, Julian noticed changes in the cultures he was growing. He noticed that the cultures w

ere increasing daily as displayed in the chart.
The rate is

1 day to 4 cultures
2 days to 9 cultures
3 days to 16 cultures
4 days to 25 cultures
If the increase continues at the same rate, how many cultures will be present on the ninth day?
Mathematics
1 answer:
jarptica [38.1K]3 years ago
8 0
The answer is:  " 100 cultures " .
_______________________________________________
   Take the number of the day we are at (from the beginning;  in this case, "9" (for "Day 9").
_________________________________________________
 Then add "1" to that number (in this case, " 9 + 1 = 10" .
_________________________________________________
Then, take that value (in this case, "10"); and "square" that value ; (in this case;  " 10² = 10 * 10 = 100 .   This is the answer.
__________________________________________________
The answer is:  " 100 cultures " .
__________________________________________________
<u>Note</u><u>:</u>  We get this steps by noticing the trend from the information provided.
___________________________________________________

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Arrange the steps in the correct order to perform this subtraction problem 1.1 ( 10 3 ) − 4.9 ( 10 2 ) = 610
Norma-Jean [14]

We are given :  Expression 1.1 ( 10^3 ) − 4.9 ( 10^2 ) = 610.

Solution: In order to solve above given expression, we need to apply order of operations.

We can apply order of operations according to PEMDAS rule.

PEMDAS stands for Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.

In the given problem, we need to simplify Parentheses first.

We have 10^3 and 10^2 in Parentheses.

10^3 = 10*10*10 = 1000.

10^2 = 10*10 = 100.

Substituting those values in original expression.

1.1 ( 1000 ) − 4.9 ( 100 ).

Now, we need to apply multiplication operation in 1.1*1000 and 4.9*100.

We get 1.1*1000 = 1100 and 4.9*100 = 490.

Substituting those values in above result we got.

1100-490.

Now, we can perform subtraction operation.

On subtracting 1100-490, we get 610.

And that is equal to 610.



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