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satela [25.4K]
4 years ago
9

Please I need the answer quickly

Mathematics
1 answer:
USPshnik [31]4 years ago
4 0
Well, for number 15, this is what I came up with, I hope it is what your teacher is looking for: 
So it starts out with 3 butterflies, and it doubles every minute: 
3x2 = 6  That is for the first minute 
6x2 = 12 That is for the second minute 
12x2 = 24 That is for the third minute 
24x2 = 48 That is for the fourth minute

So, It asks for using the power of 2 in your answer, that is what I came up with for part A. 

For part B I would say something like this: 

X represents the number of butterflies left. 
The equation, using the information above would be this:

48-7 = X
Then simplify, which would leave you with 41 butterflies. 

I hope this helps! :)


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Answer:

182.5 days

Step-by-step explanation:

So it looks like all you have to do is find 25% of 730 days. So, what you do is do 730 x 0.25 and you would get the answer of 182.5 days. If you have to round to the nearest whole number, it would be 183 days.

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shtirl [24]
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vodomira [7]
(0,1)(2,7)
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6 0
4 years ago
Seven less than the product of 8 and a number equals 4
Vlad1618 [11]

Answer:

11/8 or 1 3/8 or 1.375

Step-by-step explanation:

From the information given by the question, we can form an equation:

Let us call the number 'n'

8 × n - 7 = 4

We then move the 7 to the other side, changing it from minus to plus:

8 × n = 4 + 7

So,

8 × n = 11

We divide both sides by 8, to leave n on one side of the equation.

n = 11/8

Therefore, n = 11/8 or 1 3/8 or 1.375

3 0
3 years ago
Lisa's dog is 11 pounds heavier than Marcia's dog. Let m represent the weight of Marcia's dog. Write a variable expression to re
Verdich [7]

Answer:

M+11=L

Step-by-step explanation:

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  • L equals the weight of Lisa's dog.

The weight of Marcia's dog plus 11 = the weight of Lisa's dog.

8 0
3 years ago
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