2 years ago

Name:

Mathematics

1 answer:

swat322 years ago

7 0

Answer:

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Solve 5(7)5x = 60. Round your answer to the nearest thousandth.<br> X

solong [7]

5(7)5x=60

35*5x=60

175x=60

x=60/175

x= 0.342

Enjoy and your answer is 0.342

5 0

2 years ago

Y is directly proportional to x,and y=216 when x=2. Find y when x=7.

makkiz [27]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=216\\
x=2
\end{cases}\implies 216=k2\implies \cfrac{216}{2}=k
\\\\\\
108=k\qquad therefore\qquad \boxed{y=108x}
\\\\\\
\textit{when x = 7, what is \underline{y}?}\qquad y=108(7)$