3 years ago

Please help! I will give Brainliest!

Mathematics

1 answer:

hichkok12 [17]3 years ago

8 0

Answer:

Sorry about the other person

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Assume that r varies directly with s. If r = 21 when s = 6, find r when s = 12.

Illusion [34]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------$

$\bf r=ks\qquad \textit{we also know that }
\begin{cases}
r=21\\
s=6
\end{cases}\implies 21=k6\implies \cfrac{21}{6}=k
\\\\\\
\cfrac{7}{2}=k\qquad therefore\qquad \boxed{r=\cfrac{7}{2}s}
\\\\\\
\textit{if s = 12, what is \underline{r}?}\qquad r=\cfrac{7}{2}\cdot 12$

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4 years ago

What is the point slope equation for the point (2, 5) and slope 2/3?

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Step-by-step explanation:

Point-slope formula: y-y1=m(x-x1)

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Stacey scored 8 out of 12 on her lastest math test. what percentage did Stacy score on her test?

skelet666 [1.2K]

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What is the value of the expression below? 2 [32 – (4 – 1)] X

olga_2 [115]

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Step-by-step explanation:

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3 years ago

NEED HELP ASAP WILL GIVE BRAINLY

worty [1.4K]

1A=32, 1B=18, 2A=13, 2B=5, 3A=40, 3B=8

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3 years ago

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