3 years ago

(4k^5-9k^4+k^3-7k^2-9k+28)/4k-5

Mathematics

1 answer:

vlada-n [284]3 years ago

7 0

Answer:

=k6+ −9 /4 k5+ 1 /4 k4+ −7 /4 k3+ −9 /4 k2+7k−5

Step-by-step explanation:

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It would be X=3 because 3 multiplied by 1 equals 3 and you get 3 over 21. that simplifies to 1 over 7.

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3 years ago

Write in slope-intercept form an equation of a line that passes through the given points. (1,6) and (3,2)

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3 years ago

The midpoint of the segment as an ordered pair (-4,8) (-4,2)

tiny-mole [99]

Answer:

Step-by-step explanation:

(-4,8) & ( -4,2)

$Midpoint=\left(\dfrac{x_{1}+x_{2}}{2},\dfrac{y_{1}+y_{2}}{2} \right)\\\\\\=\left(\dfrac{-4-4}{2},\dfrac{8+2}{2}\right)\\\\\\=\left(\dfrac{-8}{2},\dfrac{10}{2} \right)$

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3 years ago

Solve the equation. x2 18x 81 = 25<br> a. 14, 4<br> b. –4, –14<br> c. 14, –14<br> d. –4, 4

Snowcat [4.5K]

Answer:

The answer is the option B

$-4,-14$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}+18x+81=25$

$x^{2}+18x+56=0$

$a=1\\b=18\\c=56$

substitute in the formula

$x=\frac{-18(+/-)\sqrt{18^{2}-4(1)(56)}} {2(1)}$

$x=\frac{-18(+/-)\sqrt{100}} {2}$

$x=\frac{-18(+/-)10} {2}$

$x1=\frac{-18+10} {2}=-4$

$x2=\frac{-18-10} {2}=-14$

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4 years ago

Read 2 more answers

Is 2/5 equal to 0.4 please help me

igor_vitrenko [27]

1/5 is 2% or 0.2, therefor 2/5 is 4% or 0.4

8 0

3 years ago