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3 years ago

Match each equation to its solution.

Mathematics

2 answers:

motikmotik3 years ago

5 0

Ik one of them.. x = 6 to 000

Kazeer [188]3 years ago

3 0

Match each equation to its solution.
3x + 7 = 28=7
x=-7=0
2x + 3 = -7=-5
000
x = 6=0
4.5x - 7 = 20=6
x=-5=0

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2 years ago

Evaluate C_n.xP^xQn-x For the given n=7, x=2, p=1/2

r-ruslan [8.4K]

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The value of given expression is $\frac{21}{128}$ .

Step-by-step explanation:

Given information: n=7, x=2, p=1/2

$q=1-p=1-\frac{1}{2}=\frac{1}{2}$

The given expression is

$C(n,x)p^xq^{n-x}$

It can be written as

$^nC_xp^xq^{n-x}$

Substitute n=7, x=2, p=1/2 and q=1/2 in the above formula.

$^7C_2(\frac{1}{2})^2(\frac{1}{2})^{7-2}$

$\frac{7!}{2!(7-2)!}(\frac{1}{2})^2(\frac{1}{2})^{5}$

$\frac{7!}{2!5!}(\frac{1}{2})^{2+5}$

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2 years ago