3 years ago

Please answer this question! 25 points and brainliest!

Mathematics

1 answer:

Dominik [7]3 years ago

6 0

Answer:

a -5/2 <=x

Step-by-step explanation:

5(x-2) <= 9x

Distribute the 5

5x -5*2 <= 9x

5x-10 <= 9x

Subtract 5x from each side

5x-5x-10 <= 9x-5x

-10 <= 4x

Divide by 4 on each side

-10/4 <=4x/4

-5/2 <=x

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Need Help For This Question

ivolga24 [154]

For this case we must find the inverse of the following function:

$f (x) = x ^ 2-1$

For them we follow the steps:

We change f (x) to y:

$y = x ^ 2-1$

We exchange variables:

$x = y ^ 2-1$

We solve for "y":

$y ^ 2-1 = x$

We add 1 to both sides of the equation:

$y ^ 2 = x + 1$

We apply square root to eliminate the exponent:

$y = \pm \sqrt {x + 1}$

We change y by $f ^ {- 1} (x)$ :

$f ^ {- 1} (x) =\pm \sqrt {x + 1}$

Answer:

Option D

6 0

3 years ago

Is this simplest radical form?<br>is this simplest radical form <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B220%7D%20" id

inessss [21]

Sqrt(220)= sqrt(2•2•5•11)=2 sqrt (5•11)=
2 sqrt(55)
So no the radical was not in it’s simplest form

5 0

4 years ago

Let f(x) = 3x2 - 6x + 2. Find f(-2)

Neporo4naja [7]

Answer:

just put

$x = - 2$

$f( x) = 3 {x}^{2} - 6x + 2$

$f( - 2) = 3 {( - 2)}^{2} - 6( - 2) + 2$

$f( - 2) = 3 \times 4 + 6 \times 2 + 2 =12+12+2 \\ f(-2)= 26$

3 0

3 years ago

Read 2 more answers

Multiply. Write your answer in simplest form. 3 1/3 x 1 1/7

Ostrovityanka [42]

Answer:

I think 3 17/21

Step-by-step explanation:

4 0

3 years ago

Measure of angle CXF

AnnyKZ [126]

50°

angle CXF and DXF are complementary which means they add to 90°

to 40° + x = 90
x = 50

5 0

3 years ago