Simplify and find value. a 3x^3−x^3+5x^3−9x^3 if x=−1

Answer:

132

Step-by-step explanation:

60 + 60 + 12 = 132

[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:

19/40

Step-by-step explanation:

1.9*(1/4) =0.475

0.475=19/40

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:

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:

We conclude that:

[tex]3\cdot \:2\begin{pmatrix}-2&3&0\\ -4&2&6\\ 6&-5&6\end{pmatrix}=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}[/tex]

Hence, option B is correct.

Step-by-step explanation:

Given the expression

[tex]3\times 2\begin{pmatrix}-2&3&0\\ \:-4&2&6\\ \:6&-5&6\end{pmatrix}[/tex]

solving

[tex]3\times 2\begin{pmatrix}-2&3&0\\ \:-4&2&6\\ \:6&-5&6\end{pmatrix}[/tex]

Scalar Multiplication: Multiply each of the matrix elements by a scalar

[tex]=\begin{pmatrix}3\cdot \:2\left(-2\right)&3\cdot \:2\cdot \:3&3\cdot \:2\cdot \:0\\ 3\cdot \:2\left(-4\right)&3\cdot \:2\cdot \:2&3\cdot \:2\cdot \:6\\ 3\cdot \:2\cdot \:6&3\cdot \:2\left(-5\right)&3\cdot \:2\cdot \:6\end{pmatrix}[/tex]

Simplify each element

[tex]=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}[/tex]

Therefore, we conclude that:

[tex]3\cdot \:2\begin{pmatrix}-2&3&0\\ -4&2&6\\ 6&-5&6\end{pmatrix}=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}[/tex]

Hence, option B is correct.

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:

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:

12=3*2*2

15=5*3

12/15=4/3

8/10=4/5

no, they don't have the same value

Answer:

danny's offer is cheaper

Step-by-step explanation:

danny = $9 per hour

martin = $16 per hour

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

Step-by-step explanation:

Explanation:

9

:

x

as

x

:

4

∴

9

x

=

x

4

x

2

=

36

x

=

±

√

36

x

=

±

6

Step-by-step explanation:

[tex]\tt{ 9:x=x:4 }[/tex] ⠀

[tex]\tt{\dfrac{9}{x}=\dfrac{x}{4} }[/tex] ⠀

[tex]\tt{x×x=9×4 }[/tex] ⠀

[tex]\tt{ x^2=36 }[/tex] ⠀

[tex]\tt{ x=\sqrt{36}}[/tex] ⠀

[tex]\tt{ x=6 ~and~x=-6 }[/tex] ⠀

Answer:

.40

Step-by-step explanation:

Searched it up on goggle

112

Answer:

112 ounces

Step-by-step explanation:

Converting pounds to ounces is simple. Since there are exactly 16 ounces in one pound, just multiply the number of pounds by 16.

16

x. 7

------------

112

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:

uhh not sure.

Step-by-step explanation:

maybe 0.000000173 * 343 wich is their values expanded

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:

sqrt89

Step-by-step explanation

Answer: 3x=-24

9x is 3(3x)= 3(-24)

9x=-72

X=-8

Step-by-step explanation:

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/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:

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:

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:

x=-16

y=40

Step-by-step explanation:

y=-4x-24

y+2x=8

its the same y. Use substitution

(-4x-24)+2x=8

-2x-24=8

-2x=32

x=-16

We found x!

substitute x in either equation

y+2x=8

y+2(-16)=8

y-32=8

y=40

Answer: (-16, 40)

Step-by-step explanation: Using substitution, you can but the first y=-4x-24 into the second equation y+2x=8. So, you take what y is (which is -4x-24) and substitute it for the second y in the equation y+2x=8.

Your equation should now look like this (-4x-24) + 2x = 8.

You can then solve -4x -24 +2x =8. Combine like-terms (-4x+2x) to get -2x-24=8. Then use inverse operations and add 24 from both sides (so from the -2x-24 side and 8 side). This will then give you -2x=32. divide both sides from -2x to get:

x = -16

Then, plug in x= -16 into the first equation (y= -4 (-16) - 24). Then use PEMDAS and multiply -4 and -16 to get +64. Subtract 24 to get:

y = 40