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4 years ago

ALGEBRA 2- If f(x)= √x-3 , which inequality can be used to find the domain of f(x)?

Mathematics

2 answers:

Fed [463]4 years ago

8 0

B, because you can't get the square root of a negative number

baherus [9]4 years ago

6 0

Answer:

Option B

Step-by-step explanation:

The given equation function is f(x) = $\sqrt{x-3}$

Domain of this function will be determined by (x-3) ≥ 0

because square root of negative numbers is not defined.

Option B is the answer.

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jackie needs 0.7 meters of canvas material to make a carry-all bag for his wheelchair. If canvas is $4.18 per meter, how much w

Akimi4 [234]

4.18x.7= 2.926

So $2.93 for .7 meters of fabric

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3 years ago

The two lines y= 6x+15 and y= mx+4 intersect at x= -2. What is the y-coordinate of their intersection point

taurus [48]

Answer:

The y-coordinate of their intersection point is 3

That is y=3

Step-by-step explanation:

Given two lines are y=6x+15 and y=mx+4

Given that the two lines intersect at x=-2

To find the y coordinate of their intersection point :

Equating the two lines

6x+15=mx+4

6x+15-mx-4=0

6x-mx+11=0

(6-m)x+11=0

At x=-2 (6-m)x+11=0

(6-m)(-2)+11=0

(6-m)(-2)=-11

$6-m=\frac{11}{2}$

$-m=\frac{11}{2}-6$

$-m=\frac{11-12}{2}$

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

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

Substitute the value $m=\frac{1}{2}$ in y=mx+4 we get

$y=\frac{1}{2}x+4$

At x=-2 $y=\frac{1}{2}(-2)+4$

$=-1+4$

$=3$

Therefore y=3

Therefore the y-coordinate of their intersection point is 3

7 0

3 years ago

Find the equation of straight line passing through the centroid of the centroid of ABC

dem82 [27]

Answer:

use the formula of centroid that is

= x1+x2+x3/3

4 0

3 years ago

NO LINKS!!! Find the equation of the PARABOLA with a vertex at (-2, 6) and passing through the point (1, -3)

levacccp [35]

General equation of parabola

y=a(x-h)²+k

for vertex(h,k)

Now

$\\ \rm\Rrightarrow y=a(x+2)^2+6$

Put (1,-3) and find a

$\\ \rm\Rrightarrow -3=a(1+2)^2+6$

$\\ \rm\Rrightarrow -9=a(3)^2$

$\\ \rm\Rrightarrow -9=9a$

$\\ \rm\Rrightarrow a=-1$

equation of parabola

$\\ \rm\Rrightarrow y=-(x+2)^2+6$

7 0

2 years ago

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Find the simplified product where x>=0

irinina [24]

Answer:

The last one

Step-by-step explanation:

in the second part, x2 could to pull out as x

6 0

3 years ago

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