Need help asap! picture included!

Mathematics

2 answers:

bulgar [2K]4 years ago

6 0

Answer: 2/15

Explanation:
There 4 freshmen that are boy and there are 30 students in total

We get: 4/30 = 2/15

telo118 [61]4 years ago

4 0

The answer is 1/3

Explain

So let A be the event that say a freshman
And b be event that say a boy is chosen

So p(A\b ) that is both occur simultane lushly

4/12+18 = 2/15

So p (b) = 12/30 = 6/15

So we know p(A/b) = p (a/b)/ p(b) = 2/5 / 6/5 = 1/3

So the p( freshman/boy is 1/3

I hope this help you

Have a great day/night

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$(0,0) \\
x=0 \\ y=0 \\ \Downarrow \\
0 \stackrel{?}{=} -\frac{3}{4} \times 0 \\
0 \stackrel{?}{=} 0 \\
0=0 \\
\hbox{the point lies on the line} \\ \\
(1,1) \\
x=1 \\ y=1 \\ \Downarrow \\
1 \stackrel{?}{=} -\frac{3}{4} \times 1 \\
1 \stackrel{?}{=} -\frac{3}{4} \\
1 \not= -\frac{3}{4} \\
\hbox{the point doesn't lie on the line}$

$
(1,-5) \\
x=1 \\ y=-5 \\ \Downarrow \\ -5 \stackrel{?}{=} -\frac{3}{4} \times 1 \\
-5 \stackrel{?}{=} -\frac{3}{4} \\
-5 \not= -\frac{3}{4} \\
\hbox{the point doesn't lie on the line} \\ \\
(6,-8) \\
x=6 \\ y=-8 \\ \Downarrow \\
-8 \stackrel{?}{=} -\frac{3}{4} \times 6 \\
-8 \stackrel{?}{=} -\frac{9}{2} \\
-8 \not= -\frac{9}{2} \\
\hbox{the point doesn't lie on the line}$

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