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aniked [119]
1 year ago
7

Select the correct answer.Which rational expression is equivalent to this expression?4/x-3

Mathematics
1 answer:
sasho [114]1 year ago
7 0

The rational expression is \frac{x+2}{x-3} *\frac{4}{x+2}

From the question, we have

\frac{4}{x-3}

The numerator and denominator of the given expression should be multiplied by the same factor (x+2).

\frac{4}{x-3} *\frac{x+2}{x+2} \\\\=\frac{x+2}{x-3} *\frac{4}{x+2}

Rational expression:

The ratio of two polynomials is displayed in rational expressions. It indicates that the denominator and numerator are polynomials. It is an algebraic expression that has a ratio and an unknown variable, just like a fraction. Although we can simplify this kind of equation with the aid of a calculator.

Factoring the numerator and denominator is the first step in reducing rational equations to their reduced form. Next, lessen or eliminate the expressions' shared elements.

Complete question: Select the rational expression that is equivalent to the given expression below.

4 / x - 3

A.) x + 2 / x - 3 ÷ 4 / x + 2

B.) x + 2 / x - 3 · 4 / x + 2

C.) x + 2 / x - 3 - 4 / x + 2

D.) x + 2 / x - 3 + 4 / x + 2

To learn more about Rational expression visit:brainly.com/question/19585906

#SPJ9

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Answer:

you have to make x-3 and x-7 equal to zero...

x = 3 or x=7

"A"

Step-by-step explanation:

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Plz help me with this math and also explain
jasenka [17]

Step-by-step explanation:

<h2>[1]</h2>

  • SI = $250
  • Rate (R) = 12\sf \dfrac{1}{2} %
  • Time (t) = 4 years

\longrightarrow \tt { SI = \dfrac{PRT}{100} } \\

\longrightarrow \tt { 250 = \dfrac{P \times 12\cfrac{1}{2} \times 4}{100} } \\

\longrightarrow \tt { 250 = \dfrac{P \times \cfrac{25}{2} \times 4}{100} } \\

\longrightarrow \tt { 250 = \dfrac{P \times 25 \times 2}{100} } \\

\longrightarrow \tt { 250 = \dfrac{P \times 50}{100} } \\

\longrightarrow \tt { 250 \times 100 = P \times 50} \\

\longrightarrow \tt { 25000 = P \times 50} \\

\longrightarrow \tt { \dfrac{25000}{50} = P } \\

\longrightarrow \underline{\boxed{ \green{ \tt { \$ \; 500 = P }}}} \\

Therefore principal is $500.

<h2>__________________</h2>

<h2>[2]</h2>

  • 2/7 of the balls are red.
  • 3/5 of the balls are blue.
  • Rest are yellow.
  • Number of yellow balls = 36

Let the total number of balls be x.

→ Red balls + Blue balls + Yellow balls = Total number of balls

\longrightarrow \tt{ \dfrac{2}{7}x + \dfrac{3}{5}x + 36 = x} \\

\longrightarrow \tt{ \dfrac{10x + 21x + 1260}{35} = x} \\

\longrightarrow \tt{ \dfrac{31x + 1260}{35} = x} \\

\longrightarrow \tt{ 31x + 1260= 35x} \\

\longrightarrow \tt{ 1260= 35x-31x} \\

\longrightarrow \tt{ 1260= 4x} \\

\longrightarrow \tt{ \dfrac{1260 }{4}= x} \\

\longrightarrow \underline{\boxed{  \tt { 315 = x }}} \\

Total number of balls is 315.

A/Q,

3/5 of the balls are blue.

\longrightarrow \tt{ Balls_{(Blue)} =\dfrac{3 }{5}x} \\

\longrightarrow \tt{ Balls_{(Blue)} =\dfrac{3 }{5}(315)} \\

\longrightarrow \tt{ Balls_{(Blue)} = 3(63)} \\

\longrightarrow \underline{\boxed{ \green {\tt { Balls_{(Blue)} = 189 }}}} \\

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A television and DVD player cost a total of $1230. The cost of the television is two times the cost of the DVD player. Find the
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71/100 because 71 cant be divided by anything

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