All categories

3 years ago

4x – 7 = 5x + 2 What is X?

Mathematics

2 answers:

olga nikolaevna [1]3 years ago

7 0

Answer: X = -9

Step-by-step explanation:

get x by itself by getting it to one side alone

4x - 7 = 5x + 2

subtract 2 from both sides

4x -9 = 5x

subtract 4x from both sides

-9 = x

plug it in to check

4(-9) - 7 = 5(-9) + 2

and they each end up being -43

Maksim231197 [3]3 years ago

5 0

Answer:

x = -9

Step-by-step explanation:

We are solving for x

Subtract 2 from both sides and you get:

4x - 9 = 5x

Then subtract 4x from both sides:

-9 = x

You might be interested in

Work out the cost. 70cm of ribbon at £2.00 per metre.

Rus_ich [418]

Answer:140
Explanation: multiply 70 times 2.00

3 0

3 years ago

The cancellation property sin−1(sin(x)) = x is valid for x in what interval

pochemuha

Answer:

It is given that : $Sin^{-1}(Sin (x) =x$

As we have to find the Domain of $Sin^{-1}(Sin (x)$ .

-1 ≤ sin x ≤1

$Sin^{-1}(-1)\leq Sin^{-1}(Sin x)\leq Sin^{-1}(1)\\\frac{-\pi}{2}\leq x\leq \frac{\pi }{2}$

So it is defined for x lying between $(\frac{-\pi}{2}, \frac{\pi }{2})$ .

As meaning of Domain is those values of x for which any function f(x) is defined.

4 0

3 years ago

the water machine at local grocery store fills a jug with 3.7 litters of water.If you fill 4 jugs how many litters of water is t

Ganezh [65]

3.7 multiplied by 4=14.8litres

8 0

3 years ago

The value of h for the parallelogram at the right

dexar [7]

Answer:

the height of the parallelogram is 10.8

7 0

3 years ago

What is the rate of change of the graph shown below? PLS HELP!!!! ^^^

const2013 [10]

Answer:

$m=\frac{-1}{3}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (3, 0)

Point (0, 1)

Step 2: Find slope m

Plug in points to find the rate of change of the graph.

Substitute [SF]: $m=\frac{1-0}{0-3}$
Subtract: $m=\frac{1}{-3}$
Rewrite: $m=\frac{-1}{3}$

7 0

3 years ago