3 years ago

Expand than simplify: 3(a+3)+2a

Mathematics

1 answer:

Lynna [10]3 years ago

5 0

Answer:

expanded : 3a + 9 + 2a answer: 5a + 9

Step-by-step explanation:

so 3*a = 3a and 3*3 = 9 + 2a

3a + 9 + 2a

5a + 9

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The volume of the cylinder is 5275 ft and the height is 23 find the diameter please explain this is for school tomorrow

stepan [7]

$\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\ \cline{1-1} V=5275\\ h=23 \end{cases}\implies 5275=\pi r^2(23)\implies \cfrac{5275}{23\pi }=r^2 \\\\\\ \sqrt{\cfrac{5275}{23\pi }}=r\implies 15.144\approx r~\hspace{10em}\stackrel{diameter=2r}{d\approx 30.288}$