If X-A=B what is X???

Is this a function? i will mark brainliest

Sunny_sXe [5.5K]

No i don’t believe it is. :)

5 0

3 years ago

Read 2 more answers

Find the error in the student's calculation.

DaniilM [7]

Answer: the 5 in the parentheses on the second line should be negative. Also, where did the 23 go?? That's a mistake too.

Step-by-step explanation: 3 - 8 = -5 so

23(2 - 4) + 5(3 - 8)

23(-2) + 5(-5)

(-46) + (-25)

-71

(at least, I think so unless there was a mistake in the equation)

5 0

3 years ago

Given the midpoint and one endpoint of a line segment, find the other endpoint.

neonofarm [45]

Answer:

(-12 , 2)

Step-by-step explanation:

<u>GIVEN :-</u>

Co-ordinates of one endpoint = (-4 , -10)
Co-ordinates of the midpoint = (-8 , -4)

<u>TO FIND :-</u>

Co-ordinates of another endpoint.

<u>FACTS TO KNOW BEFORE SOLVING :-</u>

<em><u>Section Formula :-</u></em>

Let AB be a line segment where co-ordinates of A = (x¹ , y¹) and co-ordinates of B = (x² , y²). Let P be the midpoint of AB . So , by using section formula , the co-ordinates of P =

$(x , y) = (\frac{x^2 + x^1}{2} ,\frac{y^2 + y^1}{2} )$

<u>PROCEDURE :-</u>

Let the co-ordinates of another endpoint be (x , y)

So ,

$(-8 , -4) = (\frac{-4 + x}{2} , \frac{-10 + y}{2} )$

First , lets solve for x.

$=> \frac{x - 4}{2} = -8$

$=> x - 4 = -8 \times 2 = -16$

$=> x = -16 + 4 = -12$

Now , lets solve for y.

$=> \frac{y - 10}{2} = -4$

$=> y - 10 = -4 \times 2 = -8$

$=> y = -8 + 10 = 2$

∴ The co-ordinates of another endpoint = (-12 , 2)

3 0

3 years ago

For y = 3x - 2x^2 +5x^3<br> show how to find the value for y, when x = 3. Show your work

Mnenie [13.5K]

$y \: = \: f(x) \: = \: 3x \: - \: 2 {x}^{2} \: + \: 5 {x}^{3}$
Here, y is a cubic function of x.
When x = 3,
$y \: = \: f(3) \: = \: 3(3) \: - \: 2 {(3)}^{2} \: + \: 5 {(3)}^{3}$
$y \: = \: 9 \: - \: 18 \: + \: 135$
$y \: = \: f(3) \: = \: 126$
Hence, when x = 3, y = 126.

8 0

3 years ago

Read 2 more answers

Pls help asap............

AnnyKZ [126]

See below for the solution to each question

<h3>Is the graph a function?</h3>

Yes, the graph is a function.

This is because all x values have different y values

<h3>The domain</h3>

This is the set of input values of the graph.

From the graph, we have

x = 0 to x = 17

Hence, the domain is [0, 17]

<h3>The range</h3>

This is the set of output values of the graph.

From the graph, we have

y = 0 to y = 10

Hence, the range is [0, 10]

<h3>The maximum</h3>

This is the maximum point on the graph.

From the graph, we have

Maximum = (12, 10)

<h3>The minimum</h3>

This is the minimum point on the graph.

From the graph, we have

Minimum = (0, 0)

<h3>The increasing intervals</h3>

These are the intervals where the y values increase as x increase.

From the graph, we have

Increasing intervals = (0, 5) ∪ (10, 12) ∪ (14, 15)

<h3>The decreasing intervals</h3>

These are the intervals where the y values decrease as x increase.

From the graph, we have

Decreasing intervals = (7, 10) ∪ (12, 14) ∪ (15, 17)

<h3>The constant intervals</h3>

These are the intervals where the y values remain unchanged as x changes.

From the graph, we have

Constant intervals = (5, 7)