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Dennis_Churaev [7]
2 years ago
7

Help please !!!! This is really hard

Mathematics
1 answer:
ankoles [38]2 years ago
4 0

Answer:

Option -c  :5^ -12  .  2^ 40

Step-by-step explanation:

(  5^6 . 2^8    )( 5^-2  . 2^5 )

(  5^6 . 5^-2  )   ( 2^8  . 2^5 )

5^ -12  .  2^ 40

Option -c :  5^ -12  .  2^ 40

I hope im right!!  

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Mary weighs n kg while her sister weighs 15 kg less. How many times is Mary heavier than her sister?
andrey2020 [161]

For this case we have to:

n: Represents the weight of Mary in Kg.

If your sister weighs 15 kg less we have:

y = n-15

Where "y" represents the weight of his sister in kg.

To find how many times Mary is heavier than her sister, we must divide Mary's weight by her sister's weight.

We have then:

N= \frac{n}{n-15}

Answer:

Mary is N= \frac{n}{n-15} times heavier than her sister.

8 0
3 years ago
Read 2 more answers
Wendy and two friends went out to eat and decided they would split the bill. The total bill was 35.40. They also decided to leav
marta [7]

Answer:

14.16

Step-by-step explanation:

we first calculate the total amount of money paid, which is 35.40 plus 20%, we use this calculation:

35.40×1.20 = 42.48

now, this amount is split to 3 people, so:

42.48/3 = 14.16

and that is our answer

8 0
2 years ago
it took 48 minutes to drive downtown. An app estimated it would be less than that. If the error was 20%, what was the apps estim
natulia [17]

Answer:

38.4

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it took 48 minutes and the app miss estimated by 9.6, which is 20% of 48. So subtract 9.6 from 48 and you will get 38.4

8 0
3 years ago
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Answer:

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4 0
2 years ago
V square+6v-59=0<br> answer in one equation
Tema [17]
X=\frac{-b+/- \sqrt{b^2-4ac} }{2a}
a=1
b=6
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x=\frac{-6+/- \sqrt{(6)-4(1)(-59)} }{2(1)}
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8 0
3 years ago
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