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horsena [70]
3 years ago
12

Provide the value of k: (2x-1)(kx+1)=6x^2-x-1

Mathematics
2 answers:
guapka [62]3 years ago
4 0

Answer:

k = 3

Step-by-step explanation:

Expand the left side and compare the coefficients of like terms on both sides.

(2x - 1)(kx + 1) ← expand using FOIL

= 2kx² + 2x - kx - 1

Compare the coefficients of the x² term on both sides

2k = 6 ( divide both sides by 2 )

k = 3

elixir [45]3 years ago
4 0

Answer:

k= 6x-3/2x-1

Step-by-step explanation:

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zzz [600]
23.75 miles, because you would take 4 and 3/4 (4.75) and multiply by 5 :)
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3 years ago
What’s the answer for this?
Yuliya22 [10]

Answer:

1.98

Step-by-step explanation:

sin(26) = EF/4.5 -->

.44 = EF/4.5 -->

.44 * 4.5 = EF -->

1.98 = EF

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3 years ago
A circle has a circumference of 18. It has an arc of 6. What is the central angle of the arc, in degrees?
irga5000 [103]

Answer:

Step-by-step explanation:

C=2πr

18=2×3.14×r

18=6.28r

r=2.88

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A=®/360°πr

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6

3 0
2 years ago
Read 2 more answers
Find the equation of the line, where P is a point on the graph of the line.<br><br> m=2/3 , P(3,5)
Liula [17]

Answer:

The answer is

y =  \frac{2}{3} x + 3

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

To write an equation of a line given a point and slope we have

y - y1 = m( x - x1)

where (x1 , y1 ) is the point and m is the slope

Equation of the line using point P(3 , 5) and m = 2/3 is

y - 5 =  \frac{2}{3} (x - 3)

y - 5 =  \frac{2}{3} x - 2

y =  \frac{2}{3} x + 5 - 2

We have the final answer as

y =  \frac{2}{3} x + 3

Hope this helps you

4 0
2 years ago
Line l is perpendicular to line m with equation 2x + 5y = 20. line l intersects line m at (-5,6).
VladimirAG [237]

Answer:

The equation is y = -2/5x + 4

Step-by-step explanation:

First we have to find the slope of the line. In order to do so, solve the first equation for y.

2x + 5y = 20

5y = -2x + 20

y = -2/5x + 4

This gives us a slope of -2/5. Given that information, we now can plug the slope and point into point-slope form and get the final equation.

y - y1 = m(x - x1)

y - 6 = -2/5(x - -5)

y - 6 = -2/5(x + 5)

y - 6 = -2/5x - 2

y = -2/5x + 4

7 0
2 years ago
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