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3 years ago

Solve for x. 9(x - 2) = 18 o x=0 X = 16/9 x = 20/9

Mathematics

2 answers:

iragen [17]3 years ago

5 0

Answer:

x = 4

Step-by-step explanation:

9(x - 2) = 18

9x - 18 = 18

9x = 18 + 18

9x = 36

x = 36/9

x = 4

o-na [289]3 years ago

3 0

$\huge{\boxed{ \tt{Solution :-}}}$

<h3><u>Given</u><u> </u><u>:</u></h3>

$\tt{Solve\:for\:x\::9(x-2)=18}$

$\sf {(a.)x=0}$

$\sf {(b.)x=\dfrac {16}{9}}$

$\sf {(c.)x=\dfrac {20}{9}}$

$\sf {(d.)x=4}$

The value of x.

Now, we solve the question :

$\sf{ : \implies{9(x - 2) = 18}} \\ \\ \sf{ : \implies{x - 2 = \dfrac{18}{9}}} \\ \\ \sf{ : \implies{x - 2 = 2}} \\ \\ \sf{ : \implies{x = 2 + 2}} \\ \\ : \implies{ \boxed { \tt{x= 4}}}$

$\bf {\therefore{Correct\:option\:is\:(d.)\:x=4.}}$

$\rule {307}{2}$

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solmaris [256]

Answer:

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Step-by-step explanation:

Data: S S F F S S S F S S

S means success and F damage. We have 7 successes and 3 damages for this case

(a) What is the value of the sample proportion of successes x/n?(

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x = 7 for this case

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The proportion in part (a) is exactly equal to the mean in part (b)

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We have actually 7 successes and 3 fails and we want this condition:

$\frac{x}{n}=0.6$

The new value of n would be 25 so then we can solve for x and we got:

$x = 25*0.6= 15$

So we need 15 successes and we have 7 so then we need $15-7 = 8$ successes in the new 15 cars in order to satisfy the condition.

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