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4 years ago

E(n) is an even-number function. Find E(8) when E(n) = 2n

Mathematics

1 answer:

Morgarella [4.7K]4 years ago

4 0

E(8) = 2*8 = 16. Should be no tricks.

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What is 40 dollars taxed by 8%?

miskamm [114]

Answer:

Before Tax Price: $40.00

Sale Tax: 8.00% or $3.20

After Tax Price: $43.20

Step-by-step explanation:

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3 years ago

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Solve:<br> -3y - 2 = 7<br> y =

AleksandrR [38]

Answer:

y = -3

Step-by-step explanation:

-3y -2 = 7

-3y = 9

y = -3

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4 years ago

A play tent is shown. How much fabric was used to make the front<br> and back of the play tent?

sweet-ann [11.9K]

now, we're making the assumption that the front and back of the tent are trapezoidal, Check the picture below.

$\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h=height\\ a,b=\stackrel{parallel~sides}{bases}\\[-0.5em] \hrulefill\\ h=32\\ a=23\\ b=36.5 \end{cases}\implies \begin{array}{llll} A=\cfrac{32(23+36.5)}{2}\implies A=952 \\\\\\ \stackrel{\textit{twice that much}}{2A=1904} \end{array}$

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2 years ago

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What is tan(x)-5=0<br> (With steps)

gizmo_the_mogwai [7]

$\tan x-5=0$
$\tan x=5$

Now before taking the inverse tangent of both sides, recall that

$\tan x=\tan(x\pm\pi)=\tan(x\pm2\pi)=\cdots=\tan(x\pm n\pi)$

where $n$ is any integer. This means that when taking the inverse tangent of $\tan x$ , instead of just $x$ , we would end up with

$\arctan(\tan x)=\arctan(\tan(x+n\pi))=x\pm n\pi$

So after doing so in the equation above, we're left with

$x\pm n\pi=\arctan5\implies x=\arctan5\pm n\pi$

As $n$ can be any integer, including negative integers, we can simply write

$x=\arctan5+n\pi,\,n\in\mathbb Z$

8 0

4 years ago

Could someone solve this for me.

Studentka2010 [4]

The answer is 7.6 units

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3 years ago