Five less than a number is greater than 21five less than a number is greater than 21

Mathematics

1 answer:

Sophie [7]3 years ago

3 0

Sorry can u be more specific thank you

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What is the value of 3x 2 squared + 5x when x=3

Serhud [2]

3•2=6. When you square 6, you get 36. Add 5x to that. 5x=15. 36+15=51

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PRECALCULUS QUESTION PLEASE HELP!!!!!!

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By definition you have that the tangent of an angle in a right triangle is given by the quotient between the sine of the angle and the cosine of the angle.
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answer
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3 years ago

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Which doubles fact helps you solve 8+7=15? Write the number sentence

ziro4ka [17]

You can do 8 + 8 = 16 then minus 1 cuz thats how much you added

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3 years ago

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How to solve this?<br>\int \frac { 4 - 3 x ^ { 2 } } { ( 3 x ^ { 2 } + 4 ) ^ { 2 } } d x

ivanzaharov [21]

$\Large \mathbb{SOLUTION:}$

$\begin{array}{l} \displaystyle \int \dfrac{4 - 3x^2}{(3x^2 + 4)^2} dx \\ \\ = \displaystyle \int \dfrac{4 - 3x^2}{x^2\left(3x + \dfrac{4}{x}\right)^2} dx \\ \\ = \displaystyle \int \dfrac{\dfrac{4}{x^2} - 3}{\left(3x + \dfrac{4}{x}\right)^2} dx \\ \\ \text{Let }u = 3x + \dfrac{4}{x} \implies du = \left(3 - \dfrac{4}{x^2}\right)\ dx \\ \\ \text{So the integral becomes} \\ \\ = \displaystyle -\int \dfrac{du}{u^2} \\ \\ = -\dfrac{u^{-2 + 1}}{-2 + 1} + C \\ \\ = \dfrac{1}{u} + C \\ \\ = \dfrac{1}{3x + \dfrac{4}{x}} + C \\ \\ = \boxed{\dfrac{x}{3x^2 + 4} + C}\end{array}$

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3 years ago

Find the surface area of the rectangular prism.

Natalija [7]

Twice each side:

4*3*2 + 7*3*2 + 7*4*2 = 122

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3 years ago

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Five less than a number is greater than 21five less than a number is greater than 21​

Five less than a number is greater than 21five less than a number is greater than 21