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Nataly_w [17]
3 years ago
6

How to solve x^4+4x-1=0 ? ...?

Mathematics
1 answer:
Crank3 years ago
7 0

Using the Quadratic formula

x^4 = (x^2)^2

hence

(x^2)^2 + 4x +(-1) = 0

ax^2=1(x^2)^2

bx = 4(x)

c=(-1)

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A rectangular swimming pool with length b and width h is surrounded by a walkway that is 3 feet wide. Which equation below could
Katarina [22]

The equation that can be used to find the area of the walkway is A = 3h+3b+9.

<h3>What is a rectangle?</h3>

A rectangle is a plane shape that has pair of opposite sides equal and parallel.

To find the equation that could be used to find the area of the walkway, we use the formula below.

Formula

  • Area of the walkway(A) = Area of the swimming pool and the walk- area of the swimming pool
  • A = [(h+3)(b+3)]-(hb)
  • A = hb+3h+3b+9-hb
  • A = 3h+3b+9.

Hence, The equation that can be used to find the area of the walkway is A = 3h+3b+9

Learn more about rectangles here: brainly.com/question/17297081

7 0
2 years ago
Using technology, determine the quarterly payment on a 4 year loan of $16,231 at 5.1% compounded quarterly. round your answer to
Vesna [10]

The quarterly payment will be $1,127.86

<h3>What is compound interest?</h3>

Compound interest is the interest on a loan or deposit that  levied on both the first principal and the collected interest from past periods.

The amortization formula is ...

A=\dfrac{P\timesr}{(1-(1+r)^{-n}}

where A is the payment amount, P is the principal amount, r is the interest rate per period, and n is the number of periods.

Here, we have

P=$16,231, r=0.051/4=0.01275, n=4·4=16.

So, the payment is ...

A=\dfrac{16231\times 0.01275}{1-(1.01275)^{-16}}  

A=$1127.86

Hence the quarterly payment amount is $1,127.86.

To know more about Compound interest, follow

brainly.com/question/24924853

8 0
3 years ago
What is the value of x -14=-8+x
Helen [10]

Answer:

x - 14 = -8 + x

x = 4

-14 less than or equal to 8 + x

-22 is less than or equal to x

or

x is greater than or equal to -22

Step-by-step explanation:


5 0
3 years ago
A medical researcher needs 6 people to test
nadezda [96]

\boldsymbol{\mathbf{Answer}}

\boldsymbol{\mathbf{1235520\,different\, ways\,can\,six\, people\,be\, selected}}

\boldsymbol{\mathbf{Step-by-step explanation}}

A medical researcher need to select 6 people out of 13 people who have volunteered for the test in

To find, how many ways can 6 people be selected.

= {13}\times{12}\times{11}\times{10}\times{9}\times{8}

=

\boldsymbol{\mathbf{= 604800 ways}}

\boldsymbol{\mathbf{1235520\,different\, ways\,can\,six\, people\,be\, selected}}

4 0
3 years ago
Plz help me if you're nice. If wrong answer i'll report you
Anna [14]

Answer

z= 14

Step-by-step explanation:

4( 2z-3) -5(z-6) =3 *20

8z-12-5z+30=60

3z+18=60

3z=60-18

3z=42

z= 14

5 0
3 years ago
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