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4 years ago

You ate at a restaurant and want to leave a 15% tip for a $14.25 meal. How much tip will you leave?

Mathematics

2 answers:

klio [65]4 years ago

7 0

15% of 14.25.....turn percent to decimal..." of " means multiply
0.15(14.25) = 2.1375 rounds to 2.14....its B

Triss [41]4 years ago

3 0

Well, 15% of 14.25 is: 2.1375, which can be rounded up to 2.14, so the correct answer would be B.

I hope this helped! :)

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12. The volume V of a gas varies inversely with the pressure P. When the volume is 75 inches cubed, the pressure is 30 pounds pe

charle [14.2K]

Answer:

Let V = the gas' volume and P = its pressure. The volume of a gas in a container varies inversely with the pressure on the gas:

V = k/P

where k is a constant. To find the value of k, plug in the one known point, V = 390 cubic inches when P = 7 pounds per square inch and solve for k:

V = k/p

390 = k/7

390*7 = k

2730 = k

The full equation, then, is:

V = 2730/P

To find the volume when P = 9 pounds per square inch:

V = 2730/9 = _____ cubic inches

Step-by-step explanation:

Let V = the gas' volume and P = its pressure. The volume of a gas in a container varies inversely with the pressure on the gas:

V = k/P

where k is a constant. To find the value of k, plug in the one known point, V = 390 cubic inches when P = 7 pounds per square inch and solve for k:

V = k/p

390 = k/7

390*7 = k

2730 = k

The full equation, then, is:

V = 2730/P

To find the volume when P = 9 pounds per square inch:

V = 2730/9 = _____ cubic inches

5 0

3 years ago

What is the value of the missing angle? a, 50 b, 60 c,100 d,250

hodyreva [135]

B, 60
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3 years ago

Hailey sold 20 tickets to the school play for a total of 225$.Early bird tickets were 10$ and regular priced tickets were 15$.Wr

dlinn [17]

Answer:

The system of equation are $\left \{ x+y=20} \atop {10x+15y=225}} \right.$

The number of early bird tickets are 15 and of regular tickets are 5.

Step-by-step explanation:

Given,

Total number of tickets = 20

Total amount = $225

Solution,

Let the number of early bird tickets be 'x'.

And also let the number of regular tickets be 'y'.

Now total number of tickets is the sum of number of early bird tickets and number of regular tickets.

So framing in equation form, we get;

Total number of tickets = number of early bird tickets + number of regular tickets

$x+y=20\ \ \ \ equation\ 1$

Again, Total amount is the sum of number of early bird tickets multiplied with price of each ticket and number of regular tickets multiplied with price of each ticket.

So framing in equation form, we get;

$10x+15y=225\ \ \ \ \ equation\ 2$

Hence the system of equation are $\left \{ x+y=20} \atop {10x+15y=225}} \right.$

Now we solve the equation by multiplying equation 1 by 10, and get;

$10(x+y)=20\times10\\\\10x+10y=200\ \ \ \ equation\ 3$

Now subtracting equation 3 from equation 2, we get;

$(10x+15y)-(10x+10y)=225-200\\\\10x+15y-10x-10y=25\\\\5y=25\\\\y=\frac{25}{5}=5$

On substituting the value of 'y' in equation 1, we get;

$x+y=20\\\\x+5=20\\\\x=20-5=15$

Hence The number of early bird tickets are 15 and of regular tickets are 5.

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OleMash [197]

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Musya8 [376]

Answer:

Step-by-step explanation:

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3 years ago

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