3 years ago

What are the roots of the equation?

2 answers:

7 0

For the equation to = 0 , one of the components must = 0
x = 0
x = -13/9
x = -2/11

(Make each bracket = 0)
e.g. 9x+13=0
9x = -13
x = -13/9

quester [9]3 years ago

7 0

Answer:

x = 0

x = -13/9

x = -2/11

Step-by-step explanation:

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3 years ago

if y varies inversely as x and y = 194 when x = -13, find y when x = 50. Round your answer to the nearest hundredth, if necessar

pashok25 [27]

Step-by-step explanation:

Since, y varies inversely as x.

$\therefore \: y = \frac{k}{x} \\ (k = constant \: of \: proportionality) \\ \therefore \: xy = k...(1) \\ plug \: y = 194 \: \: and \: \: x = - 13 \: in \: (1) \\ \therefore \: - 13 \times 194= k \\ \therefore \: k = - 2522 \\ substituting \: k = - 2522 \: in \: (1) \\ xy = - 2522...(2) \\ this \: is \: equation \: of \: variation. \\ plug \: x = 50 \: in \: (2) \\ 50 \times y = - 2522 \\ \therefore \:y = \frac{ - 2522}{50} \\ \huge \red{ \boxed{\therefore \:y = - 50.44}}$