3 years ago

If (a,a + square root 3) lies on the graph of y=2x, then a = ?

2 answers:

7 0

If the point
$(a \: \: a \sqrt{3} )$
lies on
$y = 2x$
then it must satisfy it.

That is

$a + \sqrt{3} = 2(a)$
$\rightarrow \: a + \sqrt{3} = 2a$

Grouping like terms we have,

$\sqrt{3} = 2a - a$
$\therefore \: a = \sqrt{3}$

Ad libitum [116K]3 years ago

5 0

Start with y = 2x. Subst. a for x and a+sqrt(3) for y:

a+sqrt(3) = 2a

Subtracting a from both sides: sqrt(3) = a

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elena-s [515]

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3 years ago

At a local dealership 30% of cars are SUVs, 50% of the cars are painted white, and 15% are white and an SUV. If we randomly sele

alex41 [277]

Answer:

1/8, 0.0625 , or 6.25%

Step-by-step explanation:

50% of the cars are painted white.

1/2 * 1/2 = 1/4 * 1/4 = 1/8

Probability of A occuring 4 time(s) = 0.54 = 0.0625

Probability of A NOT occuring = (1 - 0.5)4 = 0.0625

Probability of A occuring = 1 - (1 - 0.5)4 = 0.9375