I need help please this is quite hard for me

Mathematics

1 answer:

creativ13 [48]3 years ago

4 0

Use photomath because it is very helpful bro

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PLEAS HELP ME

GarryVolchara [31]

$\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{Table~A}{\begin{array}{ccll} x&y\\ \cline{1-2} 60&48\\70&56\\80&64 \end{array}}~\hspace{7em} \stackrel{Table~B}{\begin{array}{ccll} x&y\\ \cline{1-2} 20&24\\30&36\\40&48 \end{array}} \\\\[-0.35em] ~\dotfill$

$\bf \textit{for table A, we know that } \begin{cases} x=60\\ y=48 \end{cases}\implies 48=k60\implies \cfrac{48}{60}=k \\\\\\ \cfrac{4}{5}=k\qquad therefore\qquad \boxed{y=\cfrac{4}{5}x} \\\\\\ \textit{for table B, we know that } \begin{cases} x=30\\ y=36 \end{cases}\implies 36=k30\implies \cfrac{36}{30}=k \\\\\\ \cfrac{6}{5}=k\qquad therefore\qquad \boxed{y=\cfrac{6}{5}x}$

4 0

3 years ago

The volume of a cylinder is 8.478 cubic inches, and the radius is 15 inches. Which measurement is closest to the height of this

Harrizon [31]

Answer:

No correct answer

Step-by-step explanation:

volume of a cylinder= pi*r2*height

making height the subject of formula

height = volume/pi*r2

height= 8.478/pi*15*15 = 0.012in

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3 years ago

What is -8z-8x+5a+5c-8y+5b

EleoNora [17]

5a + 5b + 5c - 8x - 8y - 8z

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4(2-x) > -2x-3(4x+1)

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borishaifa [10]

So, what is the question?

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4 years ago