how to solve [tex]f(-x) = 7(-x)^2- 1 / (-x)^2[/tex]

Answer:

Step-by-step explanation:

place x = 19

f(19) = 3 / 19 + 2 - Sqrt 21 - 3

= 3/21 - 4

= - 81/21

= - 27/7

Answer:

f(19) = - [tex]\frac{27}{7}[/tex]

Step-by-step explanation:

Given

f(x) = [tex]\frac{3}{x+2}[/tex] - [tex]\sqrt{x-3}[/tex]

To evaluate f(19), substitute x = 19 into f(x) , that is

f(19) = [tex]\frac{3}{19+2}[/tex] - [tex]\sqrt{19-3}[/tex]

       = [tex]\frac{3}{21}[/tex] - [tex]\sqrt{16}[/tex]

       = [tex]\frac{1}{7}[/tex] - 4

       = [tex]\frac{1}{7}[/tex] - [tex]\frac{28}{7}[/tex]

       = - [tex]\frac{27}{7}[/tex]

Answer:

100*5(120) = $60,000 for 120 students

Step-by-step explanation:

Answer:

75 seconds or 1 minute and 15 seconds

Step-by-step explanation:

300 meters/4 mps = 75 seconds

Answer:

12$

Step-by-step explanation:

10% of 10 is 1$ 20% of 10 is 2$ so the answer is 12$

Answer:

Most likely 4000 brainiest ?

Step-by-step explanation:

18,000, 9000 4,500

Hope this helped

Answer:

y = 2000

Step-by-step explanation:

okay so try the halving formula is

y = a(1/2) ^t/h

if you cant understand that then

[tex]y = a\frac{1}{2}^\frac{t}{h}[/tex]

a=18000

h=6

t=19

plug ins:

y = 18,000

y=2004.52211582

y≈2000

Answer:

He planted a total of 42 carrots between the 2 gardens

Step-by-step explanation:

3 x 7 = 21

21 x 2 = 42

Answer:

1st number:  3

2nd number:  18

3rd number:   19

Step-by-step explanation:

let 'f' = 1st number

let '6f' = 2nd number

let '6f + 1' = 3rd number

f - 2(6f + 1) = -35

f - 12f - 2 = -35

-11f - 2 = -35

-11f = -33

f = 3

Answer:

The answer should be y=2.5

Answer:

2x+3y=7 would be x=7/2-3y/2

4x-5y=25 would be x=25/4+5y/4

Does this help? if not let me know!:)

Answer:

112

Step-by-step explanation:

Answer: 6

Step-by-step explanation:

The greatest common factor is 6.

Answer:

I believe its 27 cubic units

Step-by-step explanation:

3 × 3 = 9

9 × 3 =27

Answer:

the answer is 9

Step-by-step explanation:its 9 because 3+3+3 equals nine and 1 cube is 1

Answer:

24.288 LB

Step-by-step explanation:

Weight:176 LB

Fat %: 13.8%

176x0.138= 24.288

Answer: 51/250

Step-by-step explanation:

Answer:

Step-by-step explanation:

51/250\

hope it helps

Answer:

adults is 131 and kids is 59

Step-by-step explanation:

I did this to

Answer:

y=5/3x+8

Step-by-step explanation:

Answer:

1. 0

2. 14

3. -6

4. 22

Step-by-step explanation:

Plug in the equations into a calculator and sub (x) for a number.

Answer:

1.1 gigabytes

Step-by-step explanation:

Let us represent:

The number of gigabytes = g

Under his cell phone plan, Owen pays a flat cost of $67.50 per month and $4 per gigabyte. He wants to keep his bill at $71.90 per month.

The Equation is given as:

$71.90 = $67.50 + $4 × g

71.90 = 67.50 + 4g

71.90 - 67.50 = 4g

4.4 = 4g

x = 4.4/4

x = 1.1 gigabytes

Therefore, the number of gigabytes of data Owen can use while staying within his budget is 1.1 gigabytes

Answer: 3.6

Step-by-step explanation:

4x+64.5=78.9

-64.5 -64.5

4x/4=14.4/4

X=3.6

Answer:

1/5

Step-by-step explanation:

We can find the slope of a line passing through two points by using the following

m = (y2-y1)/(x2-x1)

   = (-9 - -4)/(-3 - 22)

   = (-9+4)/(-25)

   = -5/ -25

Answer:

5/6 - 2/5 = 13/30

I hope this helps

Step-by-step explanation:

Answer:

2/7 +3/8

2 × 8

7 × 8

+

3 × 7

8 × 7

=  

16

56

+ and  your  answer is  37/56

Step-by-step explanation:

Answer:

Each side would be 3 units.

Step-by-step explanation:

If the perimeter of the circle is 12 units and there are 4 sides on a square and all of those sides need to be equal all you must do is divide the number of units by the number of sides to get your answer of 3 units.

Hope I could help! :)

Answer:

surface area=132

volume=60

Answer:

Rational, Natural Number, Whole Number,Integer

Step-by-step explanation:

A natural number is also a whole number.

Every integer is a rational number.

Every natural number is a whole number, integer, and a rational number.

Every whole number is a natural number, integer, and a rational number.

Answer:

2

Step-by-step explanation:

17.5-9.5=8

[tex]4\sqrt{8}[/tex]=2

Each bag of dog food weight 2 pounds.

Answer:

12 hours

Step-by-step Explanation:

$60 (How much money Aniyah) - $12 (how much it costs to park at Disneyland) = $48

$48 ➗ $4 (how much it costs to park per hour) = 12 hours

The maximum hours Aniyah can park at Disneyland is 12 hours

Sorry if wrong! Plz mark brainiest if correct :D Have a great day luv <3

-Bee

Answer:

(-8,0) (-3,0) (-2,0)

Step-by-step explanation:

I'm kind of tired and so I just went on desmos and looked at the x intercepts

If you really want to understand it leave a message

Answer:

45

Step-by-step explanation:

Answer:

Equation of the straight line passing through the point ( 1,2 ) and having the slope

 x - √3y -1+2√3 =0

Step-by-step explanation:

Step(i):-

Given that the point (1,2) and an angle = ∝ = 30°

The slope of the line

             m = tan 30°

             [tex]m = \frac{1}{\sqrt{3} } }[/tex]

Step(ii):-

Equation of the straight line passing through the point ( 1,2 ) and having the slope

 [tex]m = \frac{1}{\sqrt{3} } }[/tex]

           y - y₁ = m(x-x₁)

          y - 2 = [tex]\frac{1}{\sqrt{3} } }[/tex] ( x -1)

        √3(y-2) = (x-1)

⇒       √3y - 2√3 = x -1

           x - √3y -1+2√3 =0