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2 years ago

Can someone help me with this plz I am so confused??

Mathematics

2 answers:

MAVERICK [17]2 years ago

8 0

Answer:

f = -5/3.

Step-by-step explanation:

We want to isolate f on the left side of the equation.

To do this we multiply both sides by -4/3 , because -3/4 * -4/3 = 1 giving us 1f.

-4/3 * -3/4 f = 5/4 * -4/3

-12/-12 f = 5/4 * -4/3

1 f = -20/12

f = - 5/3.

ruslelena [56]2 years ago

6 0

F= -1 2/3 or 5/3

In order to find the answer all you have to do is multiply both sides by -4/3.

-3/4f × -4/3 = f

-4/3 × 5/4 = -20/12

-20/12 simplified is -5/3 or -1 2/3

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Step-by-step explanation:

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1 year ago

What much expression represents a rational number?

Pie

Answer:

$\displaystyle \frac{2}{7}+\sqrt{121}$

Step-by-step explanation:

<u>Rational Numbers</u>

A rational number is any number that can be expressed as a fraction

$\displaystyle \frac{a}{b}, \ b\neq 0$

for a and b any integer and b different from 0.

As a consequence, any number that cannot be expressed as a fraction or rational number is defined as an Irrational number.

Let's analyze each one of the given options

$\displaystyle \frac{5}{9}+\sqrt{18}$

The first part of the number is indeed a rational number, but the second part is a square root whose result cannot be expressed as a rational, thus the number is not rational

$\pi + \sqrt{16}$

The second part is an exact square root (resulting 4) but the first part is a known irrational number called pi. It's not possible to express pi as a fraction, thus the number is irrational

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