Red is 20 and you spin it 50 times so 2/5 chance is red so that makes 3/5 chance not red
Answer:
0.68 : 0.32
Step-by-step explanation:
the probability of all the outcomes of an event is always 1 .
if P(E) = 0.32,
P(E') = 1 - 0.32
= 0.68
N.B that P(E') is the same as P( not E ).
since your answer should be given in the ratio form, as the odds against E ( probability not E : probability E),
P(E') : P(E)
0.68 : 0.32
hope this helps you!
-s.
Answer:
I dont understand the context of the question but something eqqual to that would be -6/8
Step-by-step explanation:
Answer:
b)0, yes
Step-by-step explanation:
Given:
Vectors (4,8) . (6,-3)
Finding inner product of vectors:
= 4x6 + 8x-3
=24-24
=0
Now to check the angle between them using formula a.b=|a|.|b|cosθ
|a|= ![\sqrt{4^{2} +8^{2} } \\\sqrt{16+64}](https://tex.z-dn.net/?f=%5Csqrt%7B4%5E%7B2%7D%20%2B8%5E%7B2%7D%20%7D%20%5C%5C%5Csqrt%7B16%2B64%7D)
=8.9
|b|=![\sqrt{6^{2} +(-3)^{2} } \\\sqrt{36+9}](https://tex.z-dn.net/?f=%5Csqrt%7B6%5E%7B2%7D%20%2B%28-3%29%5E%7B2%7D%20%7D%20%5C%5C%5Csqrt%7B36%2B9%7D)
=6.7
Putting values of a.b=0 and |a|=8.9, |b|=6.7 in a.b=|a|.|b|cosθ we get,
0= 8.9(6.7)cosθ
cosθ =0
θ=90 degrees
Hence the two vectors are perpendicular !
- line CD is perpendicular to segment AB
- point M is the midpoint of segment AB