3 years ago

Is there exam and answers x+7

Mathematics

2 answers:

vlada-n [284]3 years ago

7 0

Answer:

Step-by-step explanation:

Korolek [52]3 years ago

7 0

I believe it should be 8

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The first option

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3 years ago

The quantity y varies directly with the square of x and inversely with z. When x is 9 and z is 27, y is 6. What is the constant

ira [324]

$\bf \qquad \qquad \textit{double proportional variation}
\\\\
\begin{array}{llll}
\textit{\underline{y} varies directly with \underline{x}}\\
\textit{and inversely with \underline{z}}
\end{array}\implies y=\cfrac{kx}{z}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------$

$\bf \stackrel{\textit{\underline{y} varies directly with the square of \underline{x} and inversely with \underline{z}}}{y=\cfrac{kx^2}{z}}
\\\\\\
\textit{we also know that }
\begin{cases}
x=9\\
z=27\\
y=6
\end{cases}\implies 6=\cfrac{k9^2}{27}
\\\\\\
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3 years ago

A company made $4 million in the second quarter. This is 1/3 more than it made in the first quarter

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3 years ago

Is there exam and answers x+7 ​

Is there exam and answers x+7