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sammy [17]
3 years ago
7

Which expression is equivalent to 2x^2 – 2x + 7?

Mathematics
2 answers:
Lina20 [59]3 years ago
5 0

Answer:

The answer is = (2±√52i)/4

Step-by-step explanation:

Given the expression 2x²-2x+7, to find the equivalent expression, we will need to factorize the given equation completely to have;

2x²-2x+7

Using the general formula

x = -b±√b²-4ac/2a

From the equation, a= 2, b= -2 and c = 7

x = -(-2)±√(-2)²-4(2)(7)/2(2)

x = 2±√4-56/4

x = 2±√-52/4

x = (2±√52i)/4 where I is a complex number since √-1 = i

serious [3.7K]3 years ago
4 0
2x^2 - 2x + 7 = 2(x^2 -x +3) + 1 = 2(x-0.5)^2 + 17/6
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Katyanochek1 [597]

So you wanna find the area of each surface:

For the large square surface in the top you do 12*15=180 and there are two large squares faces so you multiply 180 by 2 which equals 360 then you find the small rectangle faces: 5*15=75 and multiply by 2 Bc there are 2 faces like that so it would be 75*2=150 then for the last faces you do 12*5= 60 *2= 120 at the end I add all of the faces up, 360+150+120=630

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3 years ago
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irina1246 [14]

Answer:

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Step-by-step explanation:


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3 years ago
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Stephan curry of the golden state warriors made 29 baskets some were 2 points some were 3 points. If the total points he scores
seraphim [82]
<h2>Answer: He makes 261 baskets to earn 45 points.</h2>

Step-by-step explanation:

Since we have given that

Number of points = 2 + 3 = 5

Number of baskets = 29

if he makes 45 points,

We need to find the number of baskets.

According to question, we get that

\dfrac{5}{29}=\dfrac{45}{x}\\\\5x=45\times 29\\\\x=\dfrac{45\times 29}{5}\\\\x=261

Hence, he makes 261 baskets to earn 45 points.

8 0
3 years ago
A city's population is 12,000 and grows at 2.6% rate. What will the population be after 25 years? A city's population is 230,000
Levart [38]

Answer:

The 12000 City would become 22,986 people, while the 230,000 city would become a population of 124,223.

Step-by-step explanation:

1st Part:

=12000⋅(0.026000000000000002⋅25)

=12000(2.718281828459045)(0.65)

=22986

2nd Part:

=230000⋅(−0.044000000000000004⋅14)

=230000(2.718281828459045)(−0.616)

=124223

3 0
3 years ago
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PLZ HELP ANSWER BY TODAY
Ivahew [28]

X = 29

Explanation:

Rigt angle means 90°

Here 2x + 32 = 90

so, 2x = 90 - 32

2x = 58

x = 58÷2

x = 29

7 0
3 years ago
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