What is the factoring quadratic expression for 125x^2-100x+20=0

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Answer 1

Answer: $125x^2-100x+20=0\n\n5(25x^2-20x+4)=0\n\n5[(5x)^2-2\cdot5x\cdot2+2^2]=0\n\n5\cdot(5x-2)^2=0\n\n5(5x-2)(5x-2)=0\iff5x-2=0\n\n5x=2\ \ \ \ /:5\n\nx=0.4$

Answer 2

Answer: $125x^2-100x+20=0\ /:5\n\n25x^2-20x+4=0\ \ \ \Leftrightarrow\ \ \ (5x)^2-2\cdot5x\cdot2+2^2=0\n\n(5x-2)^2=0\ \ \ \Leftrightarrow\ \ \ 5x-2=0\ \ \ \Leftrightarrow\ \ \ 5x=2\ /:5\ \ \ \Leftrightarrow\ \ \ x=0.4$

A is the answer

HOTS... Just solve this questions

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Answer:

Step-by-step explanation:

8. B is the midpoint of AD

A (x,y)

D( -1,3) B ( (x-1)/2, (y+3)/2) and B ( 1,1)

then (x-1)/2=1, x-1=2 ( +1) , x= 2+1, x=3

(y+3)/2=1, y+3=2 ( -3) y=2-3, y= -1

then A (3, -1)

9. (-8,3)

(s,3) the midpoint (0,u)

then (s-8)/2=0, s=8

(3+3)/2=u, u=6/2, u= 3

10. a=1 ( the y coordinate is the same as the midpoint

A(3,1)

B(x,y) the midpoint (5,1)

(3+x)/2=5, 3+x=10 , x=10-3, x=7

(y+1)/2=1, y+1=2,y=2-1, y=1

B(7,1)

The depth of a lake is 1,400 meters.What is the depth in kilometers?

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1.4km 1000 meters is equal to 1 kilometer i hope that this helps

1.4km 1000 meters is equal to 1 kilometer

What is the least common denominator for adding the fractions 4/15, 1/12, and 3/8

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I think you want the least common multipule (exg LCM of 2,3,4 is 12)

so we find the factors and include all of them so like this

15=3 times 5
12=2 times 2 times 3
8=2 times 2 times 2

so to include all of them we include 3 2's, 1 3 and 1 5 or 2 times 2 times 2 times 3 times 5 or 8 times 15 or 4 times 30 or 120

the LCM is 120

so 4/15=32/120
1/12=10/120
3/8=45/120

add 32/120+10/120+45/120=(32+10+45)/120=87/120

The least common denominator would be the least common multiple (LCM) of the denominators, 15 12 and 8.

To find the LCM, multiply two of the numbers together and test to see if the third one divides evenly into it.

15 x 8 = 120

120 ÷ 12 = 10

Because all three numbers go evenly into 120 (and 120 is the smallest number for which that is true), the least common denominator would be 120.

What is the solution of the linear system of equations?

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

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Hi Brainiac

y=2x-3

y= 2x+5

Ok we need to solve y=2x-3 for y

Now substitute 2x-3 for y in y=2x+5

y=2x+5

2x-3=2x+5

Add -2x

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

-3=5

Add 3

-3+3=5+3

0=8

No Solutions

I hope that's help:0

What is 7% tax on a $9.79 purchase

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all u do is put 9.79 multiplied by .07 and it gives you 0.6853 so its .68 or .69 cents if u round

all you do is to put 9.79 multiplied by .07 and it gives you 0.6853 so its .68 or .69 cents if u round the decimal

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What is the factoring quadratic expression for 125x^2-100x+20=0

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