3 years ago

What is 5 7/9 + 3 1/5 = ?

Mathematics

1 answer:

erastova [34]3 years ago

5 0

Answer:

8 44/45

Step-by-step explanation:

Find the LCM of 9 and 5, which is 45.

Then, set 7/9 with a denominator as 45, so it's 35/45.

Do the same for 1/5, so it's 9/45.

Add 3 + 5 + 35/45 + 9/45 to get 8 44/45.

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S_A_V [24]

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3 years ago

Please help me find the area for this hexagon (please show work to) ,:)

kvasek [131]

Check the picture below.

so the area of the hexagon is really just the area of two isosceles trapezoids.

$\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h=height\\ a,b=\stackrel{parallel~sides}{bases}\\[-0.5em] \hrulefill\\ a=2\\ b=4\\ h=2 \end{cases}\implies \begin{array}{llll} A=\cfrac{2(2+4)}{2}\implies A=6 \\\\\\ \stackrel{\textit{twice that much}}{2A = 12} \end{array}$