All categories

2 years ago

The sum of a number $x$ and 4 equals 12.

Mathematics

1 answer:

djverab [1.8K]2 years ago

3 0

Answer:

The number is 8

Step-by-step explanation:

Lets say the number is x

1: Create equation

x+4=12

2: Subtract 4 from both sides

x+4-4=12-4

x+0=8

x=8

The number is 8

You might be interested in

Zx and Zy are supplementary angles. Zy measures 139º. What is the measure of Zx?

Scorpion4ik [409]

Answer:

Step-by-step explanation:

supplementary angle is 180

therfore to fin

d the answer =

180-139=41

6 0

2 years ago

Two parallel lines were cut by a transversal. Which of the following

meriva

Answer:

B. a pair of alternate exterior angles with measures of 130° and 50°

Step-by-step explanation:

Alternate exterior angles formed when two parallel lines are cut across by the same transversal line, are said to be congruent.

Therefore, a pair of alternate exterior angles cannot have different angle measures of 130° and 50°. Rather, both alternate exterior angles should be of equal measure of degree.

All other scenarios are possible result except option B: "a pair of alternate exterior angles with measures of 130° and 50°".

7 0

3 years ago

PLS HELP THIS IS HARD ANYONE PLS

tensa zangetsu [6.8K]

Answer:

The answer is c

Step-by-step explanation:

5 0

3 years ago

How does one find the inverse function of f(x)= <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3x-1%7D" id="TexFormula1" tit

lisabon 2012 [21]

Answer:

$\displaystyle f^{-1}(x)=\frac{1+x}{3x}$

Step-by-step explanation:

<u>The Inverse of a Function</u>

The procedure to find the inverse of the function is:

* Write the function as a two-variable equation:

$\displaystyle y=\frac{1}{3x-1}$

* Solve the equation for x.

Multiply by 3x-1

$y(3x-1)=1$

Divide by y:

$\displaystyle 3x-1=\frac{1}{y}$

Sum 1:

$\displaystyle 3x=\frac{1}{y}+1$

Operate the right side:

$\displaystyle 3x=\frac{1+y}{y}$

Divide by 3:

$\displaystyle x=\frac{1+y}{3y}$

* Swap the variables:

$\displaystyle y=\frac{1+x}{3x}$

Write back into function form:

$\boxed{\displaystyle f^{-1}(x)=\frac{1+x}{3x}}$

7 0

3 years ago

Helpppppppppppppppppppppppppppppppppppppppppppppp

Aleksandr-060686 [28]

Help with what im so confused

3 0

3 years ago