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3 years ago

In my town, gas prices are always listed to the thousandths place. Since the smallest coin we have is

Mathematics

1 answer:

Virty [35]3 years ago

8 0

Answer:

It would be rounded to $5.90 per gallon. As if something is 5 or above you round up and if it is 4 or less you round down.

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Factor completely: 3x2 + 2x - 1

Alex777 [14]

$3x^{2}+2x-1=3x^{2}+3x-x-1= \\ \\ 3x(x+1)-(x+1)=(3x-1)(x+1)$

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3 years ago

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△MAH∼△WCF . What is the value of x?

spayn [35]

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Solve for x. x = [?] 5x - 7/. 3x + 27

Tanzania [10]

Step-by-step explanation:

5x-7+3x+27=180

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2 years ago

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What is k in this proportional relationship?

Zolol [24]

Answer:

Step-by-step explanation:

K is the constant of proportionality or unit rate

(x, y)

(0, 0)

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2 years ago

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Sin^2(x/2)=sin^2x Find the value of x

Veronika [31]

$\sin^2\dfrac x2=\sin^2x$
$\dfrac{1-\cos x}2=1-\cos^2x$
$1-\cos x=2-2\cos^2x$
$2\cos^2x-\cos x-1=0$
$(2\cos x+1)(\cos x-1)=0$
$\implies\begin{cases}2\cos x+1=0\\\cos x-1=0\end{cases}$ $\implies\begin{cases}\cos x=-\frac12\\\cos x=1\end{cases}$

The first case occurs in $0\le x$ for $x=\dfrac{2\pi}3$ and $x=\dfrac{4\pi}3$ . Extending the domain to account for all real $x$ , we have this happening for $x=\dfrac{2\pi}3+2n\pi$ and $\dfrac{4\pi}3+2n\pi$ , where $n\in\mathbb Z$ .

The second case occurs in $0\le x$ when $x=0$ , and extending to all reals we have $x=2n\pi$ for $n\in\mathbb Z$ , i.e. any even multiple of $\pi$ .

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3 years ago