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3 years ago

10

The solution set of x^2-2x-8=0

1 answer:

kari74 [83]3 years ago

3 0

x2−2x−8=0

Factor left side of equation.

(x+2)(x−4)=0

Set factors equal to 0.

x+2=0 or x−4=0

x=−2 or x=4

Answer:

x=−2 or x=4

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Which is the equation in slope-intercept form of the line that contains points E and F?

lys-0071 [83]

Answer:

C. y = 4x - 12

Step-by-step explanation:

<u>The coordinates of E and F are:</u>

E(4, 4) and F(2, -4)

<u>Find the slope:</u>

m = (- 4 - 4)/(2 - 4) = - 8 / - 2 = 4

<u>Use point-slope form and point E:</u>

y - 4 = 4(x - 4)

<u>Convert into slope-intercept form:</u>

y = 4x - 16 + 4
y = 4x - 12

The matching choice is C

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2 years ago

Read 2 more answers

Y=-6x+5 and y=-6x-6 pair of lines is parallel, perpendicular, or neither?

Alex73 [517]

Answer:

parallel

Step-by-step explanation:

They both have the same slope, -6.

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8 0

3 years ago

svet-max [94.6K]

After solving simultaneously we found the values for x and y are

2.76 and 5.65 respectively

<h3>Simultaneous Equations</h3>

We have the following two expressions

7x – 2y = 34 --------1

3x + 5y = -3 ---------2

Multiply 1 by eqn 5 and eqn 2 by 2

35x - 10y = 170-------3

6x + 10y = -6 ----------4

subtracting 4 from 3 we have

29 x= 164

divide both sides by 29

x = 164/29

x = 5.65

Put x = 5.65 in eqn 1 to find y

7*5.65 – 2y = 34

39.55 - 2y = 34

39.55-34 = 2y

5.55 = 2y

divide both sides by 2

x = 5.55/2

x = 2.76

Learn more about simultaneous equations here:

brainly.com/question/16863577

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2 years ago

Which expression can be used to find m

andrew11 [14]

What’s the problem? I need to know the problem in order to find m.

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3 years ago

A 20% acid solution is mixed with a 70% acid solution to get 50 liters of a 40% solution.

lilavasa [31]

Answer:

B. 2x + 7y 100% sure just got it right

Step-by-step explanation:

B. 2x + 7y

4 0

3 years ago