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irakobra [83]
3 years ago
12

One phone company charges a flat fee of $35, plus $0.15 for each minute. The other phone company charges a flat fee of $20, plus

$0.25 for each minute. For how many minutes, m, do the companies charge the same amount?
Mathematics
1 answer:
Brilliant_brown [7]3 years ago
4 0

the answer is b

Step-by-step explanation:

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Jake needs 7.59 meters of wood to complete a school project. He buys a 2.21−meter plank of wood and a 3.12−meter plank of wood.
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Answer:

2.26 meters

Step-by-step explanation:

7.59 meters - 2.21 meters - 3.12 meters = 2.26 meters

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Women = 95% means men are only 5%

300= 0.05*employees

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I hope this helps
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A dance academy charges $10 per class and a one-time registration fee for $50 , a student pays a total of $90 to the academy , f
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3 years ago
Factor 81z^4 - 16<br> Please answer asap
Oksanka [162]

81x%5E4-16 Start with the given expression.

%289x%5E2%29%5E2-16 Rewrite 81x%5E4 as %289x%5E2%29%5E2.

%289x%5E2%29%5E2-%284%29%5E2 Rewrite 16 as %284%29%5E2.

Notice how we have a difference of squares A%5E2-B%5E2 where in this case A=9x%5E2 and B=4.

So let's use the difference of squares formula A%5E2-B%5E2=%28A%2BB%29%28A-B%29 to factor the expression:

A%5E2-B%5E2=%28A%2BB%29%28A-B%29 Start with the difference of squares formula.

%289x%5E2%29%5E2-%284%29%5E2=%289x%5E2%2B4%29%289x%5E2-4%29 Plug in A=9x%5E2 and B=4.

So this shows us that 81x%5E4-16 factors to %289x%5E2%2B4%29%289x%5E2-4%29.

In other words 81x%5E4-16=%289x%5E2%2B4%29%289x%5E2-4%29.

Now let's factor 9x%5E2-4 further

-------------------------------------

 

9x%5E2-4 Start with the given expression.

%283x%29%5E2-4 Rewrite 9x%5E2 as %283x%29%5E2.

%283x%29%5E2-%282%29%5E2 Rewrite 4 as %282%29%5E2.

Notice how we have a difference of squares A%5E2-B%5E2 where in this case A=3x and B=2.

So let's use the difference of squares formula A%5E2-B%5E2=%28A%2BB%29%28A-B%29 to factor the expression:

A%5E2-B%5E2=%28A%2BB%29%28A-B%29 Start with the difference of squares formula.

%283x%29%5E2-%282%29%5E2=%283x%2B2%29%283x-2%29 Plug in A=3x and B=2.

So this shows us that 9x%5E2-4 factors to %283x%2B2%29%283x-2%29.

In other words 9x%5E2-4=%283x%2B2%29%283x-2%29.

----------------------------------------------------------------

Answer:

So 81x%5E4-16 completely factors to %289x%5E2%2B4%29%283x%2B2%29%283x-2%29

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Your fish tank holds 3535 liters of water. How much is that in milliliters?
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The answer is 3535000 milliliters
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3 years ago
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