All categories

3 years ago

Please help!!!!! I have no idea what to do!

Mathematics

2 answers:

Pani-rosa [81]3 years ago

7 0

Answer:

f(x) = -1/2 + 1

Step-by-step explanation:

Phantasy [73]3 years ago

4 0

Answer:

$f(x)=-\frac{1}{2}x +1$

Step-by-step explanation:

Slope intercept form is: $f(x)=mx+b$

<h2>Find the Slope:</h2>

Choose 2 points on the graph:

(0,1) (2,0)

Find the slope of the two points:

$\frac{0-1}{2-0}=-\frac{1}{2}$

$m=-\frac{1}{2}$

<h2>Find the Y-Intercept</h2>

The y-intercept, or the point that the line crosses on the y axis, is (0,1).

$b=1$

$f(x)=-\frac{1}{2}x +1$

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I need help finding the are of this

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In the given figure ABCD is a tripepizeum with AB||CD. If AO = x-1, CO = BO = x+1 and CD = x+4. Find the value of x.

Hitman42 [59]

$\longmapsto$ The value of "x" is 5.

$\large\underline{\sf{Solution-}}$

Given that,

A trapezium ABCD in which AB || CD such that

AO = x - 1

CO = BO = x + 1

OD = x + 4

Now,

$\rm In \: \triangle \: AOB \: and \: \triangle \: COD$

$\rm \: \angle \: AOB \: and \: \angle \: COD \: \: \{vertically \: opposite \: angles \}$

$\rm \: \angle \:ABO \: and \: \angle \: CDO \: \: \{alternate \: interior \: angles \}$

$\bf \: \triangle \: AOB \: \sim \: \triangle \: COD \: \: \: \{AA \: similarity \}$

$\bf\longmapsto\:\dfrac{AO}{CO} = \dfrac{BO}{DO}$

$\rm \longmapsto\:\dfrac{x - 1}{x + 1} = \dfrac{x + 1}{x + 4}$

$\rm \longmapsto\:(x - 1)(x + 4) = {(x + 1)}^{2}$

$\rm \longmapsto\: {x}^{2} - x + 4x - 4 = {x}^{2} + 1 + 2x$

$\rm \longmapsto\: 3x - 4 = 1 + 2x$

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2 years ago

Given g(x) = -x – 4, find g(-5).

riadik2000 [5.3K]

The value of g(-5) from the given. function; g(x) = -x – 4 is; g(-5) = 1

<h3>Evaluation of functions</h3>

The given function is;

g(x) = -x – 4

Hence, the value of g(-5) can be obtained by substituting -5 for x in the function as follows;

g(-5) = -(-5) -4

g(-5) = 5 -4

g(-5) = 1.