3 years ago

How Do you graph 2x+8y=-32

1 answer:

5 0

First, subtract 2x from both sides of the equation to get 8y = -2x - 32. Then, divide the equation by 8, to get y = -x/4 - 4. Your y-intercept will be -4, and it's slope will be -1/4.

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Roy is 11 years old and his uncle is 59 years old.how many years ago was roy ,s uncle 7 times as old as roy.

adoni [48]

59-x=7(11-x)=59 yrs

59-x=77-7x

-x+7x-77-59

6x=18

x=18^6=3

so 3 years ago uncle's age is 7 times of Roy's age.

4 0

3 years ago

7. Use the discriminant to determine how many real number solutions exist for the quadratic equation –4j2 + 3j – 28 = 0.

GrogVix [38]

$\bf \begin{array}{llccll}
y=&{{ -4}}j^2&{{ +3}}j&{{ -28}}\\
&~\uparrow &\uparrow &\uparrow \\
&~a&b&c
\end{array}
\\\\\\
discriminant\implies b^2-4ac=
\begin{cases}
0&\textit{one solution}\\
positive&\textit{two solutions}\\
negative&\textit{no solution}
\end{cases}$

so.. check what value the discriminant is then.

6 0

3 years ago

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zysi [14]

Huh? 5x100 = 500. Is that the question

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Julli [10]

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