3 years ago

5n +34 =-2(1 -7n) show ur understanding

Mathematics

1 answer:

Sav [38]3 years ago

3 0

Answer:

n=4

Step-by-step explanation:

distribute the -2 to get 5n + 34 = -2 + 14n. subtract 5n from both sides to get 9n -2 = 34. add 2 to both sides to get 9n=36. divide by 9 to get n=4

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The sum of 3 consecutive odd numbers is 183. What is the second number in this sequence?

prisoha [69]

Answer:

Step-by-step explanation:

x+x+1+x+2 = 183

3x+3 = 183

3x = 180

x = 60

Second number = x+1 = 61

5 0

4 years ago

R varies directly as s. Find r when s=4 and k=2

lesya692 [45]

$\bf \begin{array}{cccccclllll}
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ k}}&\cdot&x
\\
&& y={{ k }}x
\end{array}\\\\
-------------------------------\\\\
thus\implies r=ks\qquad 
\begin{cases}
k=2\\
\uparrow \\
constant\ of\\
variation\\
s=4
\end{cases}\implies r=2\cdot 4$