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Crazy boy [7]
4 years ago
9

Four less than five times a number is equal to 11

Mathematics
2 answers:
Yuri [45]4 years ago
8 0
It would be (5*3)-4=11 because:
5*3 is 15.
4 less than 15 is 15-4.
15-4 is
11.
Hope that helps!

Dmitriy789 [7]4 years ago
4 0
5x-4=11 is your answer
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Penny sells knitted scarves for $12 each. The cost of the supplies to make each scarf x dollars. How much profit will Penny make
Makovka662 [10]
The correct answer to your question is A) y(12-x). How?? well, 12 dollars is how much she sells them for, and you would need to subtract the amount of money to make the scarves from the 12 dollars which means 12-x, then you multiply it all by y which is the number of scarves Penny sells meaning the equation is y(12-x) or option 1
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Step-by-step explanation:

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Which expression is equivalent to 512 in exponential form?
OleMash [197]

Answer:

a)2*2*2*2*2*2*2*2*2

Step-by-step explanation:

it wouldn't be done 2*9 but exactly how it is written like

2 by the power of 9

3 0
3 years ago
E. coli bacteria have a doubling time of 20 minutes. Starting with 30 E. coli bacteria, how many will there be 6 hours later? Gr
Scorpion4ik [409]

Answer: 7,864,320

Step-by-step explanation:

Because the doubling time is 20 minutes, the bacteria would have gone through binary fission(cell division in bacteria) 18 times after 6hours(6*60/20)

Nt=N0 * 2^n

N0=starting population

n=number of times bacteria divide

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7 0
3 years ago
Grady marks down some $4.59 pens to $4.09 for a week and then marks them back up to $4.59. Find the percent of increase and the
katen-ka-za [31]

Answer:

Percentage decrease ( from $4.09 to $3.59) is 0.1% ( Rounded to nearest tenth)

Percentage increase (from $3.59 to 4.09) is 0.1% ( Rounded to nearest tenth)

Percentages are not same for the both price changes. As we can see from the calculations percentage change from $3.59 to $4.09 is higher.

Step-by-step explanation:

$4.59 has been changed to $4.09.

Percent change = [(Value after  - Value before) / Value before]*100

                          =\frac{4.09-4.59}{4.59}*100%

                          =\frac{-0.5}{4.59}*100%

                          =-0.108932%

                           =-0.1% ( Rounded to nearest tenth)

Percentage decrease is 0.1% ( Rounded to nearest tenth)

Now lets calculate the percentage change from $3.59 to $4.09.

Percent change = [(Value after  - Value before) / Value before]*100

                          =\frac{4.59-4.09}{4.09}*100%

                          =\frac{0.5}{4.09}*100%

                          =0.122249%

                           =0.1% ( Rounded to nearest tenth)

Percentage increase is 0.1% ( Rounded to nearest tenth)

Percentages are not same for the both price changes. As we can see from the calculations percentage change from $3.59 to $4.09 is higher.


5 0
3 years ago
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