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3 years ago

Evaluate : f(x) = x^2 - 2x + 1 , x = 3

Mathematics

1 answer:

den301095 [7]3 years ago

8 0

Answer:

Step-by-step explanation:

3^2=9

-2 times 3 = -6

9-6+1=4

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What is the vertex of this parabola? y= 2x² + 4x +5

uranmaximum [27]

Answer:

vertex = (- 1, 3 )

Step-by-step explanation:

Given a parabola in standard form

y = ax² + bx + c ( a ≠ 0 )

Then the x- coordinate of the vertex is

$x_{vertex}$ = - $\frac{b}{2a}$

y = 2x² + 4x + 5 ← is in standard form

with a = 2, b = 4, then

$x_{vertex}$ = - $\frac{4}{4}$ = - 1

Substitute x = - 1 into the equation for corresponding value of y, that is

y = 2(- 1)² + 4(- 1) + 5 = 2 - 4 + 5 = 3

vertex = (- 1, 3 )

6 0

3 years ago

Rhian sat a math test and an english test.In the maths test she scored 14 out of 17.In the english test she scored 31 out of 39.

Dvinal [7]

Answer:

The maths test

Step-by-step explanation:

If you convert both of the results to percentage,

Maths:

$\frac{14}{17} \times 100 = 82\%$

English:

$\frac{31}{39} \times 100 = 79\%$

You'll see that she scored better in the maths test.

4 0

3 years ago

Evaluate y = -4(5)* for x = 2

lakkis [162]

Answer: Y= -10

Step-by-step explanation:

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3 years ago

I need help with this equation 20 points help quick

Flura [38]

Answer:

$\boxed{y=|\frac{1}{2}x - \frac{3}{2}|+3}$

Step-by-step explanation:

The translation is a horizontal translation.

The graph is translated 1 unit to the left. So the value of x is added by 1.

$f(x+1)$

$y=|\frac{1}{2} (x+1)-2|+3$

$y=|\frac{1}{2}x + \frac{1}{2} -2|+3$

$y=|\frac{1}{2}x + - \frac{3}{2}|+3$

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3 years ago

What is the prime factorization of 441

77julia77 [94]

Answer:

3, 3, 7, 7. 441

Step-by-step explanation:

the prime factors of 441 are 3, 3, 7, 7. 441

8 0

3 years ago