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3 years ago

37.29 for 2 pairs of jeans. How much for each pair.

Mathematics

2 answers:

anygoal [31]3 years ago

5 0

Answer:

About $18.65 each

Step-by-step explanation:

Brainliest?!?!?!?

devlian [24]3 years ago

5 0

Answer:

$18.645

Step-by-step explanation:

18.645

2|37 .29

----------

17.

16.

----------

1.2

---

Therefore, 37.29 divided by 2=18.645

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SOLUTION We observe that f '(x) = -1 / (1 + x2) and find the required series by integrating the power series for -1 / (1 + x2).

Ann [662]

Answer:

Required series is:

$\int{\frac{-1}{1+x^{2}} \, dx =-x+\frac{x^{3}}{3}-\frac{x^{5}}{5}+\frac{x^{7}}{7}+.....$

Step-by-step explanation:

Given that

$f'(x) = -\frac{1}{1 + x^{2}}$ ---(1)

We know that:

$\frac{d}{dx}(tan^{-1}x)=\frac{1}{1+x^{2}}$ ---(2)

Comparing (1) and (2)

$f'(x)=-(tan^{-1}x)$ ---- (3)

Using power series expansion for $tan^{-1}x$

$f'(x)=-tan^{-1}x=-\int {\frac{1}{1+x^{2}} \, dx$

$= -\int{ \sum\limits^{ \infty}_{n=0} (-1)^{n}x^{2n}} \, dx$

$= -\sum{ \int\limits^{ \infty}_{n=0} (-1)^{n}x^{2n}} \, dx$

$=-[c+\sum\limits^{ \infty}_{n=0} (-1)^{n}\frac{x^{2n+1}}{2n+1}]$

$=C+\sum\limits^{ \infty}_{n=0} (-1)^{n+1}\frac{x^{2n+1}}{2n+1}$

$=C-x+\frac{x^{3}}{3}-\frac{x^{5}}{5}+\frac{x^{7}}{7}+.....$

$tan^{-1}(0)=0 \implies C=0$

Hence,

$\int{\frac{-1}{1+x^{2}} \, dx =-x+\frac{x^{3}}{3}-\frac{x^{5}}{5}+\frac{x^{7}}{7}+.....$

7 0

3 years ago

How do i solve 2+49x4+x

qaws [65]

Answer:

Step by step solution :

STEP1:Equation at the end of step 1

((49 • (x4)) - (2•7x2)) + 1 = 0

STEP 2 :

Equation at the end of step2:

(72x4 - (2•7x2)) + 1 = 0

STEP3:Trying to factor by splitting the middle term

3.1 Factoring 49x4-14x2+1

The first term is, 49x4 its coefficient is 49 .

The middle term is, -14x2 its coefficient is -14 .

The last term, "the constant", is +1

Step-1 : Multiply the coefficient of the first term by the constant 49 • 1 = 49

Step-2 : Find two factors of 49 whose sum equals the coefficient of the middle term, which is -14 .

-49 + -1 = -50 -7 + -7 = -14 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -7 and -7

49x4 - 7x2 - 7x2 - 1

Step-4 : Add up the first 2 terms, pulling out like factors :

7x2 • (7x2-1)

Add up the last 2 terms, pulling out common factors :

1 • (7x2-1)

Step-5 : Add up the four terms of step 4 :

(7x2-1) • (7x2-1)

Which is the desired factorization

Step-by-step explanation:

I have been working on this foe so long so I would appreciate brailyest!!

6 0

3 years ago

What is the area of a sector with a central angle of 2pi/9 radians and a diameter of 20.6mm? Use 3.14 for Ali and round your ans

LuckyWell [14K]

- The area of the circle is:

A=πr²

A is the area of the circle.
π=3.14
r is the radius of the circle.

- To calculate the area of <span> the sector indicated in the problem, you must apply the following formula:

As=(</span>θ/2π)πr²

As is the area of the sector.
θ is the central angle (θ=2π/9)
π=3.14
r is the radius.

- First, you must find the radius:

r=Diameter/2
r=20.6 mm/2
r=10.3 mm

- Now, you can substitute the values into the formula As=(θ/2π)πr². Then, you have:

As=(θ/2π)πr²
As=(2π/9/2π)(π)(10.3)²
As=(π/9π)(π)(10.3)²
As=(3.14/9x3.14)(3.14)(10.3)²

- Finally, the area of the sector is:

As= 37.01 mm²

6 0

3 years ago

Read 2 more answers

About 80% of e-waste is shipped outside of the US. Which of the following statements about e-waste is false? A) E-waste is routi

Mrac [35]

Answer:

Step-by-step explanation:

Right on Edge 2021

3 0

3 years ago

Which expression is the radical form of m to the power of -0.3333

Evgen [1.6K]

Answer:

A1/ ∛m

Step-by-step explanation:

m ^ (-1/3)

this is m to the cubed root in the denominator

1/ ∛m

8 0

3 years ago