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lesantik [10]
3 years ago
7

Suppose 45 students in an organization are male and 55 are female. Ten females and 15 males in the organization are graduating s

tudents. What is the probability that a:
a.) student chosen at random is male or a graduating student?
b.) students chosen at random is female graduating student?
Mathematics
1 answer:
Butoxors [25]3 years ago
5 0
A.) 15/45 or 1/3 or .33%
B.) 10/55 or 2/11 or .1818...
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Show that if u+v and u-v are orthognal, then the vectors u and v must have the same length.
pashok25 [27]

Answer with Step-by-step explanation:

We are given that

u+ v and u-v are orthogonal

We have to prove that u and v must have the same length.

When two vector a and b are orthogonal then

a\cdot b=0

By using the property

(u+v)\cdot (u-v)=0

We know that

(a+b)\cdot (a-b)=\mid a\mid^2-\mid b\mid^2

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\mid u\mid^2=\mid v\mid^2

Magnitude is always positive

When power of base on both sides are equal then base will be equal

Therefore,

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bagirrra123 [75]
Add 10
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40 mm

Step-by-step explanation:

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Find the radius of a circle with an area of 380 in².
Likurg_2 [28]

Answer:

11 inches

Step-by-step explanation:

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a=\pi r^{2}

We already know that the area is 380, so we can substitute 380 in for a.

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Now, we need to find the radius. To do this, we need to get r by itself

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10.9980796846=r

If we round to nearest whole number, our radius is 11 inches

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