2 years ago

Are all real numbers, rational numbers?

1 answer:

6 0

Hi there!

FALSE !!
" Are all real numbers are rational numbers "

$\bf{EXPLANATION}$ :-

Real number is a set of all the numbers.
Each and every kind of number, rational or irrational will be considered as a real number

Every rational number is real. But, Not all real numbers are rational.

~ Hope it helps!

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F(3)= 5x^2 - 4x + 9<br> evaluate this quadratic function

Neporo4naja [7]

Answer:

$f(3) = 38$

Step-by-step explanation:

Given the quadratic function

$f\left(x\right)=\:5x^2\:-\:4x\:+\:9$

Evaluating the quadratic function

$f\left(x\right)=\:5x^2\:-\:4x\:+\:9$

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$f\left(3\right)=\:5\left(3\right)^2\:-\:4\left(4\right)\:+\:9$

$f(3) = 45-16+9$

$f(3) = 38$

Therefore,

$f(3) = 38$

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