Pls help!!! Will mark brainliest!! links will be reported.

Mathematics

1 answer:

Ad libitum [116K]3 years ago

3 0

I hope this is the right answer and if it's not then my apologies.

And sorry it took so long.

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Suppose that P(A) = 0.25 and P(B) = 0.40 . If P(A|B)=0.20 , what is P(B|A) ?

Ket [755]

Answer:

0.32

Step-by-step explanation:

Use of formula:

P(A and B) = P(A)*P(B|A) and
P(A and B) = P(B)*P(A|B)

According to above and based on given:

P(A)P(B|A) = P(B)P(A|B)
P(B|A) = P(A|B)*P(B)/P(A)
P(B|A) = 0.20*0.40/0.25 = 0.32

8 0

2 years ago

X=? Y=6 75 degree angle at (0,0) What is X?

choli [55]

Answer:

$X=12-6\sqrt{3}=1.6077$

Step-by-step explanation:

Given that $Y=6$

$\tan(75)=\frac{Y}{X} \\X=\frac{Y}{\tan(75)}=Y\cot75=6\cot75 \\\\Calculate \ \cot(75)\\\tan(75)=\tan(45+30)=\frac{\tan45+\tan30}{1-\tan45 \cdot \tan30} =\frac{1+\frac{1}{\sqrt{3} } }{1-\frac{1}{\sqrt{3} } } \\\tan75=\frac{\sqrt{3}+1 }{\sqrt{3}-1 } =2+\sqrt{3} \\\cot75=\frac{1}{2+\sqrt{3} } =\frac{2-\sqrt{3} }{2^2-3} =2-\sqrt{3} \\\\Hence\\X=6\cot75=6 \cdot(2-\sqrt{3})\\X=12-6\sqrt{3} \approx1.6077$

5 0

3 years ago

I need help with this please

Mariana [72]

Y=90 degrees as it’s a right angle and if you where to add 60 and 90 it would be 150 degrees taken away from 180 as all triangles angles adds up to 180 degrees hope this helps

3 0

3 years ago

What is the value of x? (6x + 10) (x + 17) (4x - 34)

Artemon [7]

Answer:

Step-by-step explanation:

180=x+17+6x+10+4x-34

180=11x-7

11x=187

x=17

7 0

2 years ago