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Musya8 [376]
3 years ago
5

40 pts! solve the following equation by completing the square. 4x^2 - 16x + 8 = 0

Mathematics
2 answers:
sergij07 [2.7K]3 years ago
4 0

Answer:

B

Step-by-Step

sammy [17]3 years ago
3 0

Step-by-step explanation:

4 {x}^{2}  - 16x + 8 = 0 \\  {(2x)}^{2}  - 2.2x.4 +  {4}^{2}  - 8  = 0 \\  {(2x - 4)}^{2}  - 8 = 0 \\ 2x - 4 =   \sqrt{8}  \:  -  \sqrt{8}  \\ x = 2 +  \sqrt{2}  \\ x = 2 -  \sqrt{2}

..............................................

Plzz mark it as a brilliant answer

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love history [14]
It equals to 8.82 
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3 years ago
Finding the roots (zeros)
GenaCL600 [577]

Answer:

1.5 + 1.3228756555323i

1.5 - 1.3228756555323i

Step-by-step explanation:

y = ax^2 + bx + c

a = 1, b = -3, c = 4

Using the quadractic formula:

\frac{-b±\sqrt{b^2-4ac} }{2a} \\\\= \frac{3±\sqrt{9-4(1)(4)}}{2(1)}\\\\= \frac{3±2.64i}{2}\\\\= 1.5 ±  1.32

Note: Kindly ignore the A in the above solution ^

Hence, there is no real solution. It has complex roots.

<em>Feel free to mark this as brainliest! :D</em>

4 0
3 years ago
The number of students in each class is shown. 9,23,18,14,20,26,14,18,18,12,8,13,21,22,28,10,7,19,24,20 complete each frequency
andrezito [222]
You need paper to do this not people.
8 0
3 years ago
What is the solution of the equation w – 8 =5? Show your work
Marta_Voda [28]

Answer:

Step-by-step explanation:

first one: w-8 =5

reverse it-  8+5= 13         so 13-8= 5

second one: 5x-2

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2x+3x=5x and you'll end up with 5x-2

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8 0
3 years ago
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kkurt [141]

Answer:

"Members of a population are organized in clusters, each of which is representative of the population, and then whole clusters are randomly selected to make up the sample"

Step-by-step explanation:

In cluster random sampling, "the population is divided, usually geographically, into groups that generally have the same size.  A certain number of groups are randomly chosen, and every individual in the chosen groups are chosen for the sample."

In accord with this logic, the second choice, "Members of a population are organized in clusters, each of which is representative of the population, and then whole clusters are randomly selected to make up the sample" seems to be correct.

NOTE: This may not be the correct answer. I am simply basing my answer on the definition I have learnt.

4 0
3 years ago
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