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Lana71 [14]
3 years ago
13

Rocky pays a flat rate of $5 per month plus $0.10 per minute for

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
6 0
For his total monthly bill to be under a twenty dollars he could make a 149 calls
20-5=15
15/.10=150
150-1=149
15-.10=14.9
14.9+5=19.9
So the maximum number of calls he can make is 149 a month
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Bethany has 3.10$ in nickels and dimes. She has a total of 44 coins . What is the value of the nickels Bethany has
vlada-n [284]
Represent the unknows with n and d.

Then n+d = 44 (# of coins)

and 

$0.05n + $0.10d = $3.10   (value of coins)

Solving the first equation for n, we get n = 44-d.  Subst.  44-d for n in the 2nd equation:

0.05(44-d) + 0.10d = 3.10
Then 2.20 - 0.05d + 0.10d = 3.10, or
          2.20 + 0.05d             = 3.10, or    0.05d = 0.90.  Solving for d, 
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d = -------- = 18
        0.05

There are 18 dimes and 44-18 nickels.  How many nickels is that?  ;)

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3 years ago
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Which expression is equivalent to the given expression?
kupik [55]
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1 ½ x 4 2/9 = <br><br> 2 ⅘ x ⅕ = <br><br> 4 3/7 x ⅚ =<br><br> 6/6 x 1 ¼ = 1 ¼
irina [24]
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I can’t figure out how to solve this for a. I’ve tried multiple ways but still have not come up with an answer.
abruzzese [7]

Answer:

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