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harkovskaia [24]

4 years ago

13

If one zero Of polynomial f(x)=(k^2+4)x^2+13x+4k is Reciprocal Of the other find the value of K?

1 answer:

Ierofanga [76]4 years ago

3 0

Answer:

use this app photomath

Step-by-step explanation:

You can take a photo and its gives you the answer and the explanation

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Solve by factoring...<br><br> 1) y=6x^2-13x-5<br><br> 2) y=4x^2-7x+3

Amanda [17]

Answer:

1) $x=-\frac{1}{3}, x=\frac{5}{2}$

2) $x=1, x=\frac{3}{4}$

Step-by-step explanation:

1)

Given

$f(y)= 6x^{2} -13x-5=0$

Equating above equation.

$6x^{2} +2x-15-5=0$

$2x(3x+1)-5(3x+1)=0$

$(3x+1)(2x-5)=0$

Solving for both the equation

$3x+1=0$

$3x=-1$

$x=-\frac{1}{3}$

$2x-5=0$

$2x=5$

$x=\frac{5}{2}$

$x=-\frac{1}{3} ,x=\frac{5}{2}$

2)

Given

$f(y)=4x^{2} -7x+3=0$

$4x^{2} -4x-3x+3=0$

$4x(x-1)-3(x-1)=0$

$(x-1)(4x-3)=0$

Solving for both equation

$x-1=0$

$x=1$

$4x-3=0$

$4x=3$

$x=\frac{3}{4}$

$x=1, x=\frac{3}{4}$

8 0

4 years ago

What is the answer to 2a+3=9a-4

bixtya [17]

Solve for a by simplifying both sides of the equation, then isolating the variable.
a = 1

5 0

3 years ago

Read 2 more answers

The radius of a circle is 2 feet. What is the circle's area?

Ksju [112]

Answer:

Step-by-step explanation:

radius squared multiplied by pi = area

2 squared = 4

3.14 x 4 = 12.56

Area= 12.56 feet squared

6 0

3 years ago

Read 2 more answers

Suppose that x=6 and y=8. If y is inversely related to x, what is y when x=3?

andrey2020 [161]

$\bf \qquad \qquad \textit{inverse proportional variation}\\\\
\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad y=\cfrac{k}{x}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
x=6\\
y=8
\end{cases}\implies 8=\cfrac{k}{6}\implies 48=k
\\\\\\
therefore\qquad \boxed{y=\cfrac{48}{x}}
\\\\\\
\textit{when x = 3, what is \underline{y}?}\qquad y=\cfrac{48}{3}$

5 0

3 years ago

Write a definition of rounding in your own words

Sergio039 [100]

Adding or subtracting to make the original number the closest 10, 100, etc.

4 0

3 years ago