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3 years ago

7

How to solve Expressions

1 answer:

valkas [14]3 years ago

5 0

Solve an algebraic expression with fractions.
(x + 3)/6 = 2/3. First, cross multiply to get rid of the fraction. ...
(x + 3) x 3 = 2 x 6 =
3x + 9 = 12. Now, combine like terms. ...
3x + 9 - 9 = 12 - 9 =
3x = 3. Isolate the variable, x, by dividing both sides by 3 and you've got your answer.
3x/3 = 3/3 =
x =1.

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Step-by-step explanation:

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3 0

3 years ago

A positive real number is 5 more than another. When - 10 times the smaller is added to the square of the larger, the result is 5

salantis [7]

Answer:

4√2 and 5+4√2

Step-by-step explanation:

Let the two numbers be x ad y

Smaller = y

Bigger = x

If a positive real number is 5 more than another, then;

x = 5 + y ... 1

When - 10 times the smaller is added to the square of the larger, the result is 57, then;

-10y + x² = 57 ...2

Substitute 1 into 2;

-10y + (5+y)² = 57

-10y + 25+10y+y² = 57

y²+25 = 57

y² = 57 - 25

y² = 32

y = √32

y = 4√2

Since x = 5 + y

x = 5 + 4√2

Hence rhe numbers are 4√2 and 5+4√2

8 0

3 years ago

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FromTheMoon [43]

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7 0

3 years ago

Read 2 more answers

Which expression equals a number that is NOT a rational number?

rewona [7]

$\frac{3\pi.3^3}{7}$ is not included as a rational number !

<u>Step-by-step explanation:</u>

Here we have , following expressions & we need to identify which of the following is not a rational number . Let's find out:

We know that , Rational Number : A number which can be expressed in form of p/q , where q is not equal to zero !

Here Expressions are:

$\frac{3\pi . 3^3}{7\pi}$ :

Let's evaluate this expression

⇒ $\frac{3(\pi) ( 3^3)}{7(\pi)}$

⇒ $\frac{3^4}{7}$

Therefore , It is a rational number ! .

$\frac{-18}{5}$ :

Let's evaluate this expression

⇒ $\frac{-18}{5}$

Therefore , It is a rational number ! .

$\frac{5}{3-7-9}$ :

Let's evaluate this expression

⇒ $\frac{5}{3-16}$

⇒ $\frac{-5}{13}$

Therefore , It is a rational number ! .

$\frac{3\pi.3^3}{7}$ :

Let's evaluate this expression

⇒ $\frac{3\pi.3^3}{7}$

⇒ $\frac{\pi.3^4}{7}$

Therefore , It is not a rational number , as pi is included ! .

4 0

3 years ago

Read 2 more answers

PLEASE HELP!!! WILL MARK BRAINLIEST!!<br> Use the diagram to solve for x

bearhunter [10]

Answer: 3

Step-by-step explanation:

Set them equal because they are the same so 15x+5=16x+2 so x+2=5 so x=3

3 0

3 years ago