Half a number plus 2.5 times that number equals 18. What is the number?

Answer:

L = (-1.5, 2) U = (1.5, 2.5) V = (1, -0.5)

Step-by-step explanation:

Just divided everything by two.

Answer:

x=10-6

x=4

Step-by-step explanation:

for which level

Answer:

The answer would be -75

Step-by-step explanation:

Answer:

[tex]x^{2}+36x=88\\ x^{2}+36x-88=0\\[/tex]

Step-by-step explanation:

The rest is not factorable this is as far as you can go

sorry, hope this still helps

Answer:

any number under 4 so 3 2 1 -1 -2 -3 -4 -5 -6 -7 etc

Step-by-step explanation:

Answer: oh kay then....

Answer:

I have 5 inches in length as my measurements

Answer:

A solution that results in a false statement when substituted back into the original  equation.

Step-by-step explanation:

An extraneous solution is one that arises in a solution of equations, but which on closer inspection is not a solution to the original equation. Therefore, they imply an error in the development of the solution of the equation, so they cannot be taken as a valid solution since, when replacing the result with the missing variable, the equation does not obtain the desired result.

Answer:

$68.85

Step-by-step explanation:

19% of $85 is $16.15

$85 - $16.15 = $68.85

Answer:

Step-by-step explanation:

The output of a function is 3 less than 6 times the

input. Find the input when the output is 15.

find out u

Answer:

Am not seeing any error

[tex](4 {x}^{2} - x + 3) - (3 {x}^{2} - 5x - 6) \\ = (4 - 3) {x}^{2} - (5 + 1)x + (3 - 6) \\ = {x}^{2} - 6x - 3[/tex]

Step-by-step explanation:

the second table

......................

Answer:

5x + y = -48

Step-by-step explanation:

(y + 3)/(x + 9) =m

=> y + 3 = -5x -45

=> 5x + y + 48 = 0

Answer:

9

Step-by-step explanation:

11×9=99

Only 1p remaining which is not enough for another sweet.

So it is 9

Please give brainliest and thank me if it helped.

Answer:

237

Step-by-step explanation:

1000-424-339=237

:):):)

Answer:

go for it!!!!

Step-by-step explanation:

Answer:

If you feel like you should. Just make sure they are single.

Answer:

Vertical line: x = 4

Horizontal line: y = -2

Step-by-step explanation:

Answer:

2%

Step-by-step explanation:

thank u for Ur question:)

Answer:

2+2=4

5+5=10

Step-by-step explanation:

i hope this helps

Answer:

2 + 2 is  4 and 5 + 5 is 10

Step-by-step explanation:

becuase it is :>

Answer:

[tex]f(x)\cdot g(x)=x^3-21x^2+135x-243[/tex]

Step-by-step explanation:

We are given the two functions:

[tex]f(x)=x^2-12x+27\text{ and } g(x)=x-9[/tex]

And we want to find:

[tex]f(x)\cdot g(x)[/tex]

So, by substitution:

[tex]=(x^2-12x+27)\cdot (x-9)[/tex]

Distribute:

[tex]=(x^2-12x+27)(x)+(x^2-12x+27)(-9)[/tex]

Multiply:

[tex]=(x^3-12x^2+27x)+(-9x^2+108x-243)[/tex]

Rearrange:

[tex]=(x^3)+(-12x^2-9x^2)+(27x+108x)+(-243)[/tex]

Combine like terms:

[tex]=x^3-21x^2+135x-243[/tex]

Hence:

[tex]f(x)\cdot g(x)=x^3-21x^2+135x-243[/tex]

Answer:

E

R

R

R

E

E

Step-by-step explanation:

explanation

Answer: 1/2

Step-by-step explanation:U need to simplify 2/4 by divide both 2 and 4 by 2 which gives u 1 over 2 (1/2).

Hope it helps :)

Answer:

y = 4x + 40 and y = 40

Step-by-step explanation:

BAD  QUESTION.

Believe it's y = 4x + 40 and y = 40. Others don't make sense. Sorry for bad explanation, but I'm a little unsure do to the question...

The second one is probably x > 10

Sorry in advance, try the question yourself if you can and check cause.

Answer:

37 hours

Step-by-step explanation:

to find out how many hours it will take the ship to get to the bahamas, we must take the distance that needs to be traveled and divide it by the distance traveled every hour (m/h)

859 / 23 = 37.3478261

now, rounded to the nearest hour, that would be 37 hours

The answer is D. it goes down 12 every 1 and a half hours so 4/1.5 =2.6666

Answer:

36y-24

Step-by-step explanation:

Answer:

36y - 24

Step-by-step explanation:

4(9y - 6)

First Step: Multiply both 9y and -6 by 4

36y - 24

Wonderful quote, have a nice day!

Answer:

nicee

Step-by-step explanation:

Answer:

Step-by-step explanation:

Expanding double brackets is easy. Let me give u an example :

(x+5)(x+1)

so the way i do it is

1.Write the second bracket (x+1) twice :

(x+1) (x+1)

2. split the first bracket (x+5) like this :

x(x+1) +5(x+1)

3. Simplify

x*x = x²

x*1 = 1x

5*x = 5x

5*1 = 5

x² + 1x + 5x + 5 = x² + 6x + 5

so the final answer is gonna be x² + 6x + 5

in order to factorize it, u basically do the following :

1. Find two numbers, that multiply to give the last number (a.k.a 5 ) and add to give the middle number (a.k.a 6) The middle number is the sum, and the last number is the product.

so u write all the combo's that make the number 5 :

1 x 5

The two number's are gonna be 1 & 5, because 1 + 5 = 6 (the sum) and 1 x 5 = 5 (the product)

This example is easy since it doesn't include any negative numbers, so u just do = (x+1) (x+5) or (x+5) (x+1) same thing ;-;

I think u should just ask a teacher or watch a tutorial or smthn, this is like the worst explanation ever. But yeah once u know the method, you'll find expanding double brackets rly easy.

a. -8/3 miles below sea level.

Sasha started at sea level and has hiked down to the fourth rest station.

Now sea level is 0.

Sasha takes a break at the rest stations every 2/3 of a mile.

This means she is down to 4 rest points means 4 times 2/3

This becomes =

But the answer will be in negative as she is below 0.

So, correct answer is: a. -8/3 miles below sea level.

                                       Other way,

sea level is 0.....so if u go below sea level, u will end up with a negative number...and since she is hiking down, ur answer will be negative. The is a station every 2/3 mile....and if she passed 4 of them....

-2/3 * 4 = - 8/3 <=== her elevation....another answer could have been - 2 2/3, but that is not there

Sasha's elevation will be -8/3 miles below sea level.

The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.

Given that Sasha hikes into a canyon. She takes a break at the rest stations every 2/3 of a mile she descends.

Sasha started at sea level and hiked down to the fourth rest station. Now the sea level is 0. Sasha takes a break at the rest stations every 2/3 of a mile.

This means she is down to 4 rest points means 4 times 2/3

This becomes = 4 x ( 2 / 3) = 8 / 3

But the answer will be negative as she is below 0.

Therefore, Sasha's elevation will be -8/3 miles below sea level.

To know more about an expression follow

brainly.com/question/25808192

#SPJ2

Answer:

the number is 22

Step-by-step explanation:

[tex]11 - 8 = 3[/tex]

[tex]11 + 11 = 22[/tex]