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lakkis [162]
3 years ago
11

The smith family went out to eat at Buffalo Wild Wings. The bill was $43.86. They gave the server a 15% tip. What was the cost o

f the tip? How much did they pay all together?
Mathematics
2 answers:
lana66690 [7]3 years ago
8 0

Answer:

$50.44

Step-by-step explanation:

First I turned the percent to a decimal which was 0.15.                      

Then I multiplied 0.15* 43.86        

The answer was 50.439 so then I rounded it to 50.44    

Answer: $50.44

ehidna [41]3 years ago
5 0

Answer: $50.44

Step-by-step explanation:

Given : The smith family went out to eat at Buffalo Wild Wings.

The amount of bill = $43.86

The percentage of tip= 15% =0.15

Then, the cost of the tip is given by :-

0.15\times\$43.86=\$6.579\approx\$6.58

Thus, the cost of tip = $6.58

The total amount they pay together = $43.86+ $6.58=$50.44

Hence, the  total amount they pay together = $50.44

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If the area of the region bounded by the curve y^2 =4ax and the line x= 4a is 256/3 Sq units, using integration find the value o
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If the area of the region bounded by the curve y^2 =4ax  and the line x= 4a  is \frac{256}{3} Sq units, then the value of  a will be 2 .

<h3>What is area of the region bounded by the curve ?</h3>

An area bounded by two curves is the area under the smaller curve subtracted from the area under the larger curve. This will get you the difference, or the area between the two curves.

Area bounded by the curve  =\int\limits^a_b {x} \, dx

We have,

y^2 =4ax  

⇒ y=\sqrt{4ax}

x= 4a,

Area of the region  =\frac{256}{3}  Sq units

Now comparing both given equation to get the intersection between points;

y^2=16a^2

y=4a

So,

Area bounded by the curve  =   \[ \int_{0}^{4a} y \,dx \] ​

 \frac{256}{3} =\[  \int_{0}^{4a} \sqrt{4ax}  \,dx \]

\frac{256}{3}=   \[\sqrt{4a}  \int_{0}^{4a} \sqrt{x}  \,dx \]

 \frac{256}{3}=   \[2\sqrt{a}  \int_{0}^{4a} x^{\frac{1}{2} }   \,dx \]                                            

\frac{256}{3}= 2\sqrt{a}  \left[\begin{array}{ccc}\frac{(x)^{\frac{1}{2}+1 } }{\frac{1}{2}+1 }\end{array}\right] _{0}^{4a}

\frac{256}{3}= 2\sqrt{a}  \left[\begin{array}{ccc}\frac{(x)^{\frac{3}{2} } }{\frac{3}{2} }\end{array}\right] _{0}^{4a}

\frac{256}{3}= 2\sqrt{a} *\frac{2}{3}  \left[\begin{array}{ccc}(x)^{\frac{3}{2}\end{array}\right] _{0}^{4a}

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\frac{256}{3}= \frac{4}{3} \sqrt{a}   \left[\begin{array}{ccc}(4a)^{\frac{3}{2}  \end{array}\right]

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\frac{256}{3}= \frac{4}{3} *  8 *a^{3}

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Hence, we can say that if the area of the region bounded by the curve y^2 =4ax  and the line x= 4a  is \frac{256}{3} Sq units, then the value of  a will be 2 .

To know more about Area bounded by the curve click here

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