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GenaCL600 [577]
3 years ago
11

Sunni drives total of sixty-four and half mile to work and back each day Monday through friday.Her car gets 21.5miles per gallon

.if has cost $2.85 per gallon ,how much does it cost Sunni to drive and from work each week?
Mathematics
1 answer:
Zinaida [17]3 years ago
6 0
Alright, so she drives 64.5*5 (for 5 days)=322.5 miles each week. She then uses 322.5miles/1 * 1gallon/21.5 miles (we have 1 gallon/21.5 miles because 1 gallon=21.5 miles and we have the gallon at the top to cross the miles out)=15 gallons. The cost per gallon is 2.85 (we add 2.85 for each gallon), and we have 15 gallons, so 2.85dollars*15l=42.75 dollars is our answer
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1/15

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What is the perimeter of a square of the side length is 3 cm
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Perimeter  = 12

Step-by-step explanation:

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4 years ago
Which system of equations is equivalent to the following system? 3x + 5y = 29 x + 4y = 16 3x + 5y = 29 −x − 4y = 16 3x + 5y = 29
sp2606 [1]

Answer:

Option 3x+5y=29 and -3x-12y=-48 is the system of equations equivalent to the given system of equations 3x+5y=29 and x+4y=16

Step-by-step explanation:

Given system of equations  is 3x+5y=29 and x+4y=16

To find the equivalent system of equations to the given system of equations :

Option 3x+5y=29 and -3x-12y=-48 is the system of equations represents the given system of equations.

Because we can write the given equations as below

3x+5y=29 and x+4y=16

x+4y=16 rewritting as below

When multiply the above equation into (-3) we get

(-3)\times (x+4y)=16\times (-3)

-3x-4y=-48 as same as the equation x+4y=16 so we can say that they are equivalent

Therefore Option 3x+5y=29 and -3x-12y=-48 is the system of equations represents the given system of equations

Therefore 3x+5y=29 and -3x-12y=-48 is the system of equations equivalent to the given system of equations 3x+5y=29 and x+4y=16

3 0
3 years ago
Help for this question fr​
lesya692 [45]

Answer:

(x + 16)° = 141°

Step-by-step explanation:

  • Given figure is of octagon

  • Sum of interior angles of an octagon is 1080°

  • -> 5x° + 455° = 1080°

  • -> 5x° = 1080° - 455°

  • ->5x° = 625°

  • -> x° = 625°/5

  • x° = 125°

  • x = 125

  • -> (x + 16)° = (125 + 16)°

  • -> (x + 16)° = 141°

6 0
3 years ago
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Answer:

the second one

Step-by-step explanation:

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