3 years ago

Find the value of y. Picture below

Mathematics

1 answer:

olga2289 [7]3 years ago

6 0

We have trapezoid with congruent legs.

30x + 11y = 2x + 3

28x +11y = 3

Also we have

30x + 11y = 12

We got 2 equations:

30x + 11y = 12

28x +11y = 3 (*-1) -----> -28x -11y = -3

30x + 11y = 12

2x = 9

x=9/2

30x + 11y = 12 ------> 30*9/2 +11y =12 ------> 135+11y =12, ---> 11y = - 123,

y= - 123/11

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skelet666 [1.2K]

Step-by-step explanation:

f°g= $f(g(x))$

$g(x)=x^2-6x$

$f(x)=1/x$

$f(g(x))=$ $\frac{1}{x^2-6x}$

if the denominator is zero the number is undefined which makes it not in the domain of the function

set $x^2-6x$ equal to 0

the values for x is 0 or 6

so the only value that is not in the domain of f°g is 0 and 6

Hope that helps :)

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