F= 3x^2 - x +4 , find f (1/2)

Mathematics

1 answer:

sergey [27]3 years ago

4 0

The answer is 7 i did it on a calculator lol

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Which of the following are solutions to the equation below?

snow_lady [41]

Answer:

Step-by-step explanation:

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3 years ago

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Help!!<br> What is the number to make -27 I need help please

vladimir1956 [14]

Answer:

-15

Step-by-step explanation:

9/5=1.8

-27 divided by 1.8 equals -15

and to check you can do -15×9/5

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4 years ago

Evaluate 2/3 + 1/3 + 1/6 + … THIS IS CONTINUOUS. It is NOT as simple as 2/3 + 1/3 + 1/6.

Vlada [557]

$a=\dfrac{2}{3}\\r=\dfrac{1}{2}$

The sum exists if $|r|$

$\left|\dfrac{1}{2}\right|$ therefore the sum exists

$\displaystyle\\\sum_{k=0}^{\infty}ar^k=\dfrac{a}{1-r}$

$\dfrac{2}{3}+\dfrac{1}{3}+\dfrac{1}{6}+\ldots=\dfrac{\dfrac{2}{3}}{1-\dfrac{1}{2}}=\dfrac{\dfrac{2}{3}}{\dfrac{1}{2}}=\dfrac{2}{3}\cdot 2=\dfrac{4}{3}$