If f(x) = 3x 2 - x, find f(-2).
A: 10
B: 14
C: 38

Answer:

Yes it its!!! It goes on for a long time!! Keep that in mind when you are doing problems like this!  

:)

Step-by-step explanation:

Answer:

x=√2, x=-√2, x= 3 and x=-3

Step-by-step explanation:

We need to solve the equation x^4 - 11x^2+18=0  

We can replace x^4 = u^2 and x^2 = u

So, the equation will become

u^2 -11u+18 = 0

Factorizing the above equation:

u^2 -9u-2u+18 =0

u(u-9)-2(u-9)=0

(u-2)(u-9)=0

u=2, u=9

As, u = x^2, Putting back the value:

x^2 =2 , x^2 =9  

taking square roots:

√x^2 =√2 ,√x^2=√9  

x=±√2 , x = ±3

so, x=√2, x=-√2, x= 3 and x=-3

Answer:

The second answer is correct.

Step-by-step explanation:

Mark brainliest if correct please

Answer:

Step-by-step explanation:

Here you go mate

PEMDAS

Parenthesis

Exponents

Multiplication

Addition

Subtraction

Step 1

-10x-4≥-4(x-2)  Equation/Question

Step 2

-10x-4≥-4(x-2)  Remove parenthesis

-10x-4≥-4x+8

Step 3

-10x-4≥-4x+8  Simplify by adding 4x

-6x-4≥8

Step 4

-6x-4≥8  Subtract 4 from both sides

6x≥12

Step 5

6x≥12  Divide both sides by 6 or 3

answer

x≤-2

Answer:

sqrt89

Step-by-step explanation

[tex]\bold{Hey\ there!}[/tex]

[tex]\bold{Guide\downarrow}[/tex]

[tex]\bold{Negative}[/tex] & [tex]\bold{Negative}[/tex] =[tex]\bold{Positive}[/tex]

[tex]\bold{Positive}[/tex] & [tex]\bold{Negative}[/tex] = [tex]\bold{Negative}[/tex]

[tex]\bold{Positive}[/tex] & [tex]\bold{Positive}[/tex] = [tex]\bold{Positive}[/tex]

[tex]\bold{Negative}[/tex] & [tex]\bold{Positive}[/tex] = [tex]\bold{Negative}[/tex]

[tex]\bold{(-32)\div(-4)}[/tex]

[tex]\bold{=32\div4}[/tex]

[tex]\bold{=8}[/tex]

[tex]\boxed{\boxed{\bold{Answer: 8}}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{LoveYourselfFirst:)}[/tex]

Answer:

4

Step-by-step explanation:

Since both of these numbers are negative, it means that the answer will be negative, since 2 negatives make a positive, since now you know that, you can easily do 32/8 which is 4.

-32/ -8 = 4

Check....

-8 * 4 = -32

-32 / 4 = -8

When there is a negative number and a positive number being multiplied or divided by, it will always result in a negative number.

Hope this helped!

Have a supercalifragilisticexpialidocious day!

Answer:

Try this site Bellow

Step-by-step explanation:

M A T H W A Y

no spaces and it's all one word

Answer:

It would be none of them technically.

I am unsure but it seems like C.

Answer:

r=1

Step-by-step explanation:

3+2r=5

-3      -3

2r=2

r=1

Answer: R equals 1. Move the constant to the right and change it's sign. Subtract the numbers. Divide both sides of the equation by 2. So that leaves you with 1.

Answer:

ਮੁਆਫ ਕਰਨਾ ਮੈਨੂੰ ਬਿੰਦੂ ਚਾਹੀਦੇ ਹਨ

Step-by-step explanation:

Answer:

9807654e6785e46754

Step-by-step explanation:

Answer:

X=50 hope this helps:)

Step-by-step explanation:

90+110=200

360-200=160

160=3x+10

150=3x

X=50

Answer:

That would be -5

Step-by-step explanation:

Answer:

132

Step-by-step explanation:

60 + 60 + 12 = 132

Answer:

dude I ain't no albert einstein but I think it's 61

Step-by-step explanation:

stay groovy man

Answer:

-2x+2y=-8

-2x+2(0)=-8

-2x=-8

x=-8/-2

x=4

(4,0)

=======================================================

Explanation:

If we plug in y = 0 and solve for x, we'll get the x intercept.

Doing so for choice A has us get

4x+y = 8

4x+0 = 8

4x = 8

x = 8/4

x = 2

So the x intercept is 2. We can rule out choice A

Through similar steps, choice B has an x intercept of x = -2, so we can rule that out as well.

Choice C leads to x = -4, so that's not the answer either.

Choice D has an x intercept of x = 4 since,

-2x+2y = -8

-2(4)+2(0) = -8

-8+0 = -8

-8 = -8

So that confirms choice D is the answer.

Answer:

There are 30 students in class

Step-by-step explanation:

Let x be the total number of students

Then according to the given statement,

40% of x is 12

this can be expressed mathematically as:

[tex]12 = 40\%\ of\ x\\12 = 0.40 * x[/tex]

we can simply use this equation to find the total number of students

[tex]12 = 0.40x[/tex]

Dividing both sides by 0.40

[tex]\frac{0.40x}{0.40} = \frac{12}{0.40}\\x = 30[/tex]

Hence,

There are 30 students in class

Answer:

no because the two smallest sides have to be bigger that the third side

The answer is 8.

Proportion is defined as the difference between two ratios or fractions that are equal to each other.

The given proportion is

6/x = 21/28

x =  (6*28)/21

x=(6*4)/3

x=8

Hence the solution for the given proportion is 8.

To learn more about proportion, use the link given below:

https://brainly.com/question/3254974

#SPJ2

Answer:

650 Sweaters hope this helps

Answer:

Step-by-step explanation:

12=3*2*2

15=5*3

12/15=4/3

8/10=4/5

no, they don't have the same value

Answer:

20

Step-by-step explanation:

30+30 is a hour and half of 30 is 15 so do this 8+8 and the add half of 8 and it is 4 so the full thing is 8+8+4+20

Answer:

c is (-8,-6)

d is (-8,10)

e is (-4,2)

:)

Answer:

C(-4,-3)

D(-4,5)

E(2,-4)

Answer:

x= -5

y= 4

Step-by-step explanation:

Substitute the equations for y

x+9=4x+24

Subtract x from both sides of the equation.

9=3x+24

Now subtract 24 from both sides of the equation.

-15=3x

x= -5

y= -5=9=4

Answer:

The answers for the exercise shown in the figure attached above, are shown  

Step-by-step explanation:

-The Compound inequality for the solution 1 is:

-2(x+1)≥-4 or 4x-7≥5

x≥1

x≥3

-The Compound inequality for the solution 2 is:

-6≤2x-8≤-2

1≤x≤3

-The Compound inequality for the solution 3 is:

3x-4≥5 or -5x+17≤12

x≥3

x<1

Answer/Step-by-step explanation:

Given,

10x - 3y = 3

3x + 10y = 30

Rewrite both equation in slope-intercept form, y = mx + b.

Where, m = slope of the line.

Thus,

✔️10x - 3y = 3

-3y = -10x + 3

y = 10/3x - 1

Slope of this line would be 10/3

✔️3x + 10y = 30

10y = -3x + 30

y = -3/10x + 3

The slope of this line is -³/10.

✔️The two lines are pendivukar to each other because the slope of one is the negative reciprocal of the other.

Answer:

The answer is 192. Hope this helps!

Answer:

2 times larger

Step-by-step explanation:

Answer:

two.

Step-by-step explanation:

The circumference of a wheel is directly scaled to its radius.  We're told that Kevin's tricycle wheel is eight inches in radius, and Monica's bicycle wheel is 16 inches in radius.  Because 16 is equal to 2×8, we know that Monica's wheel is twice as big as Kevin's.

Answer:

19/40

Step-by-step explanation:

1.9*(1/4) =0.475

0.475=19/40