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3 years ago

The Price of is shorts is $20 and the tax 8% what is the selling price?

Mathematics

2 answers:

PIT_PIT [208]3 years ago

4 0

Answer:

the answer is

18.4$

Step-by-step explanation:

20*0.08=1.6

20-1.6=18.4

Ivahew [28]3 years ago

3 0

Answer: i got 21.6

Step-by-step explanation:

i did 20 times the 8% and added the answer i got to the 20

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Evaluate the integral Integral ∫ from (1,2,3 ) to (5, 7,-2 ) y dx + x dy + 4 dz by finding parametric equations for the line seg

n200080 [17]

$\vec F(x,y,z)=y\,\vec\imath+x\,\vec\jmath+3\,\vec k$

is conservative if there is a scalar function $f(x,y,z)$ such that $\nabla f=\vec F$ . This would require

$\dfrac{\partial f}{\partial x}=y$

$\dfrac{\partial f}{\partial y}=x$

$\dfrac{\partial f}{\partial z}=3$

(or perhaps the last partial derivative should be 4 to match up with the integral?)

From these equations we find

$f(x,y,z)=xy+g(y,z)$

$\dfrac{\partial f}{\partial y}=x=x+\dfrac{\partial g}{\partial y}\implies\dfrac{\partial g}{\partial y}=0\implies g(y,z)=h(z)$

$f(x,y,z)=xy+h(z)$

$\dfrac{\partial f}{\partial z}=3=\dfrac{\mathrm dh}{\mathrm dz}\implies h(z)=3z+C$

$f(x,y,z)=xy+3z+C$

so $\vec F$ is indeed conservative, and the gradient theorem (a.k.a. fundamental theorem of calculus for line integrals) applies. The value of the line integral depends only the endpoints:

$\displaystyle\int_{(1,2,3)}^{(5,7,-2)}y\,\mathrm dx+x\,\mathrm dy+3\,\mathrm dz=\int_{(1,2,3)}^{(5,7,-2)}\nabla f(x,y,z)\cdot\mathrm d\vec r$

$=f(5,7,-2)-f(1,2,3)=\boxed{18}$

8 0

3 years ago

9x - 5 = 2x + 8<br><br><br> PLSSSS Help. Algebra 1

drek231 [11]

Step-by-step explanation:

9x - 2x = 8 + 5

7x = 13

x =13÷7

x = 1.8571

approximately = 1.86

I think this is it

4 0

3 years ago

Read 2 more answers

Which of the following expressions are equivalent to -19/8 x(-50)

dmitriy555 [2]

1. Move the negative sign to the left.

- $\frac{19}{8}$ $X$ *-50

2. Use this rule: $\frac{a}{b}$ $*$ $\frac{c}{d}$ = $\frac{ac}{bd}$

- $\frac{19x*-50}{8}$

3. Simplify - $\frac{-950x}{8}$

4. Move the negative sign to the left.

-(-950x/8)

5. Simplify 950x/8 to 475x/4

6. Remove parentheses.

5 0

2 years ago

X+2y=2 I don't get how to get y by itself

Ksivusya [100]

You have to divide so it would be

X+2/2 = y do you see what I did so then it would be
X+y = xy =2=2xy so you have to first divide then combine like terms

6 0

3 years ago

John read the first 114 pages of a novel, which was 3 pages less than 1/3 of the novel. Write an equation to determine the total

suter [353]

Answer: the equation is 1/3p-3=114

The novel has a total of 351 pages

Step-by-step explanation:

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3 years ago