12.what is the probability that a boy and a girl chosen randsomly will be seniors?

Step-by-step explanation:

Probability=

Probability for a randomly chosen girl to be senior=

Probability for a randomly chosen girl to be senior=

Probability for a randomly chosen boy to be senior=

Probability for a randomly chosen girl to be senior=

For two independent events,

Probability for both event 1 and event 2 to take place=

Since choosing boys and girls is independent,

Probability for both boy an girl chosen to be senior=

Probability for both boy and girl chosen to be senior=

So,required probability is

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation:

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.