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4 years ago

What is y divided by 2; y=4

Mathematics

1 answer:

shusha [124]4 years ago

4 0

Y/2=?
y=4
4/2=2
so y divided by 2 is 2.
Have a nice day!!~~~ ^-^

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The ranger of the function x2+2x-8is allá

allsm [11]

Answer:

$\mathrm{Range\:of\:}x^2+2x-8:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\ge \:-9\:\\ \:\mathrm{Interval\:Notation:}&\:[-9,\:\infty \:)\end{bmatrix}$

Step-by-step explanation:

As the function is

$x^{2} +2x-8$

As we know that domain is the set of input values for which the function is defined.

Therefore,

$\mathrm{Domain\:of\:}\:x^2+2x-8\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:$

And range is defined as:

The set of the dependent variable for which the function is defined.

$\mathrm{For\:a\:parabola}\:ax^2+bx+c\:\mathrm{with\:Vertex}\:\left(x_v,\:y_v\right)$

$\mathrm{If}\:a$

$\mathrm{If}\:a>0\:\mathrm{the\:range\:is}\:f\left(x\right)\ge \:y_v$

$a=1,\:\mathrm{Vertex}\:\left(x_v,\:y_v\right)=\left(-1,\:-9\right)$

$f\left(x\right)\ge \:-9$

Therefore,

$\mathrm{Range\:of\:}x^2+2x-8:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\ge \:-9\:\\ \:\mathrm{Interval\:Notation:}&\:[-9,\:\infty \:)\end{bmatrix}$

The graph is also attached below.

Keywords: graph, domain, range

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8 0

3 years ago

Help!<br> Central Angles and arc measures

enot [183]

Answer:

x = 11

Step-by-step explanation:

The sum of arcs of a semicircle is 180°. That fact can be used with the given angle relations to find the value of x.

<h3>Setup</h3>

The measure of an arc is the same as the measure of the central angle it subtends.

DC +CG +GF = 180

The angle bisector CH ensures that angles CHD and CHG are congruent. That means arcs CD and CG are congruent, and we have ...

DC +DC +GF = 180 . . . . . . . . . use DC for CG

2(7x -1) +(2x +6) = 180 . . . . . . . use the given expressions

<h3>Solution</h3>

This equation can be solved for x.

16x +4 = 180 . . . . . . . . . . . . simplify

16x = 176 . . . . . . . . . . . . subtract 4

x = 11 . . . . . . . . . . . . . divide by 16

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2 years ago

Type the value of the ? below.

blsea [12.9K]

Answer:

416

Step-by-step explanation:

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3 years ago

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The real square roots of 16/49

Katarina [22]

Answer:

± $\frac{4}{7}$

Step-by-step explanation:

Given

$\sqrt{\frac{16}{49} }$ = $\frac{\sqrt{16} }{\sqrt{49} }$ = ± $\frac{4}{7}$

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4 years ago

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Solve using elimination.<br> -9x – 9y = 18<br> -9x - 5y = -18

Naddika [18.5K]

Answer:

x=7, y=-9

Step-by-step explanation:

-9x – 9y = 18

-9x - 5y = -18

Multiply the second equation by -1

9x + 5y = 18

Add this to the first equation to eliminate x

-9x – 9y = 18

9x + 5y = 18

---------------------------

-4y =36

Divide each side by -4

-4y/4 = 36/-4

y = -9

Now find x

-9x -9y = 18

-9(x) -9(-9) = 18

-9x +81 = 18

Subtract 81 from each side

-9x +81-81 =18-81

-9x =-63

Divide each side by -9

-9x/-9 = -63/-9

x=7

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4 years ago

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