3 years ago

What is the discriminant of the polynomial below? 4x2 - 20x + 25

2 answers:

jeka943 years ago

8 0

Are you asking<em> to solve this because you factor out 4x^2-20x+25 and that equals (2x-5)(2x-5)that is the answer.

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Vesnalui [34]3 years ago

8 0

Answer:0

Step-by-step explanation:

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A cube made a silver has a density of 10,490 kg/m^3. If one of the sides were doubled without changing the mass of silver, how w

Sindrei [870]

Answer:

D- It would quadruple

Step-by-step explanation:

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3 years ago

If a bank account doubles in size every 5 years, then by what percent does it grow after only 3 years? Round to the nearest tent

mr Goodwill [35]

Answer:

Step-by-step explanation:

Alright, let get started.

Suppose the initial deposit in account = x

After five years, this accounts get doubled means = 2x

Means in 5 years , the growth = $2x-x = x$

So, in 1 year, the growth will be = $\frac{x}{5}$

So, in 3 years, the growth will be = $\frac{x}{5}*3=\frac{3x}{5}$

So percent grwoth will be = $\frac{\frac{3x}{5}}{x}*100 = 60$

Hence percentage growth is 60 %. : Answer

Hope it will help :)

4 0

3 years ago

i When 20 is added to a certain number and the sun is divided by 3, the result is 3 times the number, find the number.

Bingel [31]

Answer:

$let \: the \: number \: be \: x \\ \frac{20 + x}{3} = 3x \\ \frac{3(20 + x)}{3} = (3x)3 \\ 20 + x = 9x \\ 20 = 9x - x \\ 20 = 8x \\ \frac{20}{8} = \frac{8x}{8} \\ x = 2.5$

Step-by-step explanation:

Hope that this is helpful .

Have a great day.

3 0

3 years ago

If sqaure root x = 9, then x is between _____. 15 and 20 2 and 3 80 and 90 4 and 5

kolbaska11 [484]

If sqrt x = 9 then x = 9*9 = 81

Answer is between 80 and 90.

3 0

3 years ago

Read 2 more answers

Find: (4x2y3 + 2xy2 – 2y) – (–7x2y3 + 6xy2 – 2y)

Ivahew [28]

Answer:

10x2y3 -4xy2

Step-by-step explanation:

Just take the like terms and separate them-

1) 4x2y3 - (-7x2y3)= 10x2y3

2)2xy2 - 6xy2= -4xy

3)-2y - (-2y)= 0y

Hope this helps :)

8 0

3 years ago