$\dfrac{4}{\sqrt3-\sqrt2}=\dfrac{4}{\sqrt3-\sqrt2}\cdot\dfrac{\sqrt3+\sqrt2}{\sqrt3+\sqrt2}=\dfrac{4(\sqrt3+\sqrt2)}{(\sqrt3)^2-(\sqrt2)^2}\\\\=\dfrac{4\sqrt3+4\sqrt2}{3-2}=4\sqrt3+4\sqrt2$

8 0

3 years ago

The sum of seven interior angle measurements is an octagon equal 835°. What is the angle measurement of the eighth angle?

creativ13 [48]

$\bf \textit{sum of all interior angles in a polygon}\\\\ S=180(n-2)~~ \begin{cases} n=\textit{number of sides}\\[-0.5em] \hrulefill\\ n=8 \end{cases}\implies S=180(8-2) \\\\\\ S=180(6)\implies S=1080$

now, we know 7 of those angles are already 835°, so the last one must be 1080 - 835 = 245°.

4 0

3 years ago

Lena bought 10 pounds of potatoes for $5.50 write the cost as cents per pound

MariettaO [177]

<span>10 pounds of potatoes for $5.50
one pound = $5.50 / 10 = $0.55

answer

it cost 55 cents per pound</span>

5 0

3 years ago

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600+600+200-200 Giving Brainliest