4 years ago

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

2 answers:

8 0

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

babymother [125]4 years ago

6 0

$125x^2-100x+20=0\ /:5\\\\25x^2-20x+4=0\ \ \ \Leftrightarrow\ \ \ (5x)^2-2\cdot5x\cdot2+2^2=0\\\\(5x-2)^2=0\ \ \ \Leftrightarrow\ \ \ 5x-2=0\ \ \ \Leftrightarrow\ \ \ 5x=2\ /:5\ \ \ \Leftrightarrow\ \ \ x=0.4$

You might be interested in

Isaac can text 96 words in 6 minutes. At this rate, how many words could he text in 10 minutes?

NISA [10]

Answer:

160

Step-by-step explanation:

We can divide 96 by 6 to find that Isaac types at 16 words per minute

16*10=160

6 0

3 years ago

What is y = 3/2 x -1 can somebody plz help? :)

Marrrta [24]

Answer:

Hello!!

The answer to the equation $y = \frac{3}{2} x -1$ is...

Exact form: $\frac{8}{3}$

Decimal form: $2.6$ repeating

Mixed number form: $2\frac{2}{3}$

Step-by-step explanation:

Simplify for x by simplifying both sides of the equation, then isolate the variable.

Hope this helps!!

5 0

3 years ago

Read 2 more answers

Pls help and SHOW WORKINGS<br> It due ASAP

zalisa [80]

Answer:

Any real number strictly larger than 9 and strictly less than 21.

Step-by-step explanation:

By triangle inequality, the sum of the lengths of any two sides are greater than the length of the third side.

We therefore could set up three inequalities.

x+6>15, x+15>6, 15+6>x

Solving these, we get x>9, x>-9, x<21 i.e. 9 < x < 21.

7 0

3 years ago

Line BF: (52, 47) and (20, -45) Line GT: (108, 16) and (85 , 24)

kherson [118]

Answer:

utrtttfdgtt

Step-by-step explanation:

7 0

3 years ago

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customer

Temka [501]

Answer:

100/3=33

Step-by-step explanation:

33 minuets for the true average checkout time.

4 0

3 years ago