3 years ago

Help me with this right now please everyone

Mathematics

1 answer:

garik1379 [7]3 years ago

8 0

Number 5 is 25+h divide f

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When asked to factor the x^2-121 a student gives the answer (x-11)(x-11) what is wron with this answer?

Art [367]

Given expression is x² - 121

This is called Difference of Squared terms, we have a formula that is given as :-

a² - b² = (a - b) · (a + b)

Now using the above formula in the given expression, we get :-

x² - 121

x² - (11)²

here a = x and b = 11

x² - (11)² = (x - 11) · (x + 11)

but it says that student gave the answer as (x - 11) · (x - 11).

So, student's answer should be (x - 11) · (x + 11) instead of product of two (x - 11) terms.

7 0

3 years ago

Read 2 more answers

Please help asap. Thank you! :)

Kruka [31]

When he cubed ,

Result is x³

On further squaring x³, he got = (x³)²

${x}^{6}$

<h3>Therefore, k = 6</h3>

7 0

3 years ago

Please help me with this question

WINSTONCH [101]

Answer:

it is not linear

Step-by-step explanation:

5 0

3 years ago

Which number is a perfect cube 5,100,125,150

kolbaska11 [484]

Answer is 125.
Because it's cube root is an integer:)

6 0

3 years ago

Which of the equations below could be the equation of this parabola?

Mademuasel [1]

Answer:

Option B: $y = -\frac{1}{2} x^2$

Step-by-step explanation:

The parabola has its concavity downwards, so we need a function in the model:

$y = ax^2 + bx + c$

With a negative value of 'a'

The vertex is (0,0), so we have that:

$0 = 0a + 0b + c$

$c = 0$

The x-coordinate of the vertex is given by the equation:

$x\_vertex = -b/2a$

$-b/2a = 0$

$b = 0$

So we have a function in the model:

$y = ax^2$

With a < 0

The only option with this format is B:

$y = -\frac{1}{2} x^2$

7 0

3 years ago