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maw [93]
3 years ago
6

3^-2 expanded form

Mathematics
1 answer:
Zanzabum3 years ago
5 0

3^(-2) = 1/(3^2) = 1/(3*3) = 1/9

The rule used here is x^(-y) = 1/(x^y) to make the exponent positive.

3^2 turns into 3*3 because the exponent 2 tells us how many copies of the base '3' to multiply out.

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Jaclyn has $50 saved and earns $25 each month in allowance. Pedro has $200 saved and earns $10 a month in allowance. If they bot
Darina [25.2K]

Answer:

3 months

Step-by-step explanation:

Let after m months they saved same amount of money.

Given,

Saving of Jaclyn = $ 120,

Amount earned by him/her per month = $ 40,

So, the total amount contained by him/her in m months = Saving + earning for m months

= 120 + 40m,

Similarly, saving of Pedro = $ 180,

Amount earned by him/her per month = $ 20,

So, the total amount contained by him/her in m months = 180 + 20m

Thus, we can write,

120 + 40m = 180 + 20m

40m = 180 + 20m - 120

40m - 20m = 60

20m = 60

⇒ m = 60/20 = 3.

Hence, it will take 3 months before which Jaclyn and Pedro have saved the same amount of money.

Hope this helps u! if not sorry

5 0
3 years ago
Can someone help me with this please
Rina8888 [55]
There are 64 handshake because eaxh hand is shaked 8btimes and there are 8 people, so 8×8=64
6 0
3 years ago
What is the value of the 19th term in the sequence -1, -5, -9, ...?<br> -77<br> -73<br> -71<br> -22
lorasvet [3.4K]
All right i just earned that today! 
This is the formula An = A1 + ( n-1 )D 
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-1 + 18(-4) 
-1 + -72
-73 
Hope that helped! 
:)
3 0
3 years ago
Write 3 fractions that are equivalent to 9/15 (9 over 15) with work shown?
postnew [5]
9 / 15

9 / 3 = 3

15 / 3 = 5

so 3 / 5

60/100

6/10
6 0
4 years ago
Amira has \dfrac34 4 3 ​ start fraction, 3, divided by, 4, end fraction of a bag of cat food. Her cat eats \dfrac{1}{10} 10 1 ​
irakobra [83]

Answer:

  7.5 weeks

Step-by-step explanation:

Divide the amount by the rate to find the time:

  (3/4 bag)/(1/10 bag/week) = 30/4 week = 7.5 weeks

3 0
3 years ago
Read 2 more answers
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