what is the value of X?​

Answer:

B

Step-by-step explanation:

Combine like terms. Like terms have same variable with same power.

2x & (-12x) are like terms  and

-7x²  & 4x²  are like terms

A = 2x - 7x² + 3

B = 4x² - 12x

A + B = 2x - 7x² + 3 + 4x² - 12x

         = 2x  - 12x   - 7x² + 4x² + 3

         =  (2-12)x + (-7 + 4)x² + 3

           = -10x + (-3x²) + 3

          = -3x² - 10x +3

Answer:

(9,4)

Step-by-step explanation:

your welome

Answer:

Asriel is correct because 2 times 2 is 4 and 2 times 3 is 6 and 2 times 5 is 10 so Asriel is correct.

Answer: Asriel & Adrian

Step-by-step explanation: 2x2 =4 (Ex: if you have 2 apples and was given 2 more you would have 4 in total)

2x3=6 (Ex: like if you have 2 oranges and was given 3 more you always have to count by your multiples.)

Answer:

The sentence is passive.

(Btw this is English lol, not mathematics)

The value of x is 8.77

Answer:

90+36+(4x+6)=180

4x+6=54

4x=48

x=12

Answer:
NK = 14.4

Step-by-step explanation:

Given the following question:

We know that the two sides are similar
JI = 3, NM = 7.2

The scale factor is 2.4 since....

[tex]3\times2.4=7.2[/tex]

Knowing the two sides are similar and if we multiply JI by 2.4, we get NM we can easily do the same for JG and NK.

JG = 6
[tex]6\times2.4=14.4[/tex]
[tex]=14.4[/tex]

NK = 14.4

Hope this helps.

Answer:

Step-by-step explanation:

Answer:

(x +7) years old

Step-by-step explanation:

Joy= (4x +5) years old

Since Michael is (3x -2) years younger, we need to subtract (3x -2) from Joy's age to find out his age.

Michael

= (4x +5) -(3x -2)

= 4x +5 -3x +2 (expand)

= x +7

Thus, Michael is (x +7) years old.

Answer:

b/c+30

Step-by-step explanation:

Answer:

Surface area = (Perimeter of the base × Length of the prism) + (2 × Base Area) = (S1 + S2+ S3)L + bh;

Answer:

  3x +2y -7

Step-by-step explanation:

The given expression can be simplified by combining like terms. Those are terms with the same variable. The commutative and associative properties of addition apply, as well as the distributive property.

   (2x +3y -7) +(x -y) . . . . . given

  = 2x +3y -7 +x -y . . . . . . eliminate (unneeded) parentheses

  = (2x +x) +(3y -y) -7 . . . . group like terms

  = (2+1)x +(3-1)y -7 . . . . . . combine coefficients of like terms (this is an application of the distributive property)

  = 3x +2y -7

3/4 x 3 = 9/4

Since you need to multiply first you add the 8 later after you solve the multiplication

8 9/4

Answer:

26 [tex]\frac{1}{4}[/tex]

Step-by-step explanation:

8[tex]\frac{3}{4}[/tex] = [tex]\frac{(8x4)+3}{4}[/tex] = [tex]\frac{35}{4}[/tex]

[tex]\frac{35}{4}[/tex] x [tex]\frac{3}{1}[/tex] = [tex]\frac{105}{4}[/tex] = 26.25 = 26 [tex]\frac{1}{4}[/tex]

Answer: -1 is a rational number.

Step-by-step explanation: -1 is a rational number because it is an integer. An integer can be any number, such as -5, 5, 0, 3, etc.

Rational numbers can also be perfect squares (i.e square root of 25), it can be repeating decimals or decimals in general.

Irrational numbers are numbers that cannot be written as a fraction OR that are imaginary.

Irrational numbers would be repeating decimals that do not have the same values repeated, such as Pi. Pi cannot be written as a fraction, only estimated. Irrational numbers can also be imaginary numbers such as the square root of -4. There is no number in this world that can multiply itself and become -4. A negative times a negative is positive, and a positive times a positive is a positive. This means the square root -4 is imaginary and therefore irrational.

Answer:

Yes.

Step-by-step explanation:

All integers, fractions, whole numbers & natural numbers fall into the category of rational numbers.

How are integers rational numbers?

The definition of rational numbers says that any number that can be written in the form of p/q, where p & q are integers & q is not equal to 0 are categorised into rational numbers. This is in the form of the fraction. We know that, by dividing the integers by 1, we'll get them as a fraction. Sp, integers are rational numbers.

For example:

- 1 = -1/1 (p/q form; so it's a rational number)

________

Hope it helps ⚜

Answer: the answer is 39

Step-by-step explanation:

i just took the test

Answer: 39%

Step-by-step explanation: i took the test :)

The area of the shape is 12 square units

The given shape is a trapezium and the formula for calculating the area of a trapezium is expressed as:

A = 0.5(a+b)h

Given the following parameters

a = 2

b = 10

h = 2

Substituting the given parameters

A = 0.5(2+10)*2
A = 0.2(12) * 2

A = 12 square units

Hence the area of the shape is 12 square units

Learn more on area of trapezium here: https://brainly.com/question/16904048

Answer:

Jeff would owe $23,715

Step-by-step explanation:

$4,000+$9000+$3600+$11300x 0.85 = $23,715

Answer:

(9/40)

Step-by-step explanation:

Sin is Opposite/Adjacent

sin(C) = AB/BC

We can find the value of AB by using the Pythagorean Theorem:

a^2 + b^2 = c^2

(80)^2 + b^2 = (82)^2

b = 18

sin(C) = 18/80 or (9/40)

Answer:

it's the third bubble

Step-by-step explanation:

Answer:

n³ - 2n² - 3n + 2 + (2 / x - 4)

Step-by-step explanation:

n^4 - 6n³ + 5n² + 14n - 6

(n - 4) x n³

n^4 - 6n³ + 5n² + 14n - 6

-n^4 + 4n³

-2n³ + 5n² + 14n - 6

(n - 4) x -2n²

-2n³ + 5n² + 14n - 6

2n³ - 8n²

-3n² + 14n - 6

(n - 4) x -3n

-3n² + 14n - 6

3n² - 12n

2n- 6

(n - 4) x 2

2n - 6

-2n + 8

R. 2 / x - 4

I hope this helps!

Answer:

[tex]y = - 7[/tex]

Solving steps:

=> 26=-12y-9+7y

Step 1: Simplify both sides of the equation.

make y the subject of formula

=> 26=−12y+−9+7y

=> 26=(−12y+7y)+(−9)

Combine like terms

=> 26=−5y+−9

=> 26=−5y−9

Step 2: Flip the equation.

=> −5y−9=26

Step 3: Add 9 to both sides.

=> −5y−9+9=26+9

=> −5y=35

Step 4: Divide both sides by -5.

.=> [tex] \frac{ - 5y}{ - 5} = \frac{35}{ - 5} [/tex]

=> y = - 7

Answer:  The Answer is A

Step-by-step explanation:

8x^2 - 16y^2

Answer:it’s A

Step-by-step explanation:took the test

Answer:

B.

[tex] \frac{1}{2} [/tex]

Answer:

school=6 hours

eating= 2.4 hours

sleep= 9.6 hour

homework= 2.4 hours

free time= 3.6 hours

Step-by-step explanation:

Answer:

Let x = ml of 21% solution

Let y = ml of 15% solution

ATQ,

x + y = 60.....(1)

or

0.21x + 0.15y = 0.6....(2)

Multiplying equation 1st by 0.21, we get,

0.21y+0.21y =12.6....(3)

subtracting equation 3

0.21y+0.21y =12.6

-0.21x +0.15y = 0.6

_________________

ㅤㅤㅤ 0.6y = 12

_________________

6y = 12

y = 20ml

x= 60-20 = 40 ml

Hence , Conner needs 20ml of 21% solution & 40ml of 15% solution

Answer:

b x h

Step-by-step explanation: