2 years ago

Help and please number the answers accurately thanks a lot!

Mathematics

1 answer:

kvasek [131]2 years ago

7 0

Answer:

I KNOWW THE ANSWER!!

Step-by-step explanation:

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If y varies directly as x, and y is 12 when x is 1.2, what is the constant of variation for this relation? A) 1 B) 10 C) 10.8 D)

Anit [1.1K]

$\bf \begin{array}{cccccclllll}&\\
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\&\\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\&\\
y&=&{{ k}}&\cdot&x&\\
&\\
&& y={{ k }}x&\\
\end{array}& \\\\\\
\textit{we know that }
\begin{cases}
y=12\\
x=1.2
\end{cases}\implies y=kx\implies 12=k\cdot 1.2$

solve for "k" to find "k", or the "constant of variation"

6 0

3 years ago

Read 2 more answers

A store is going out of business. Everything is marked down 40%. How much do you pay now for an item that used to cost $150?

barxatty [35]

Answer : $60

Steps for Solving :

$150/10 (to get 10 parts)
=15

15•4 (to get 40%)
=60

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3 years ago

What two numbers can multiply to get -84 but can add up to get -17?

miss Akunina [59]

Answer:

Step-by-step explanation: