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2 years ago

How to solve this pls? 20 + 46 - 11ab - 6b

Mathematics

2 answers:

kramer2 years ago

4 0

Step-by-step explanation:

20+46-11ab-6b

since there are only one pair of like terms,

therefore by solving them , we get

66-11ab-6b

I hope it helped U

stay safe stay happy

shusha [124]2 years ago

3 0

Answer:

66-11ab-6b

Step-by-step explanation:

20 + 46 - 11ab - 6b

add like terms

66-11ab-6b

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What is the sum of this expression??<br><br> 3 3/7 + 1 6/7 = ???

Anna11 [10]

Answer:

5 2/7

Step-by-step explanation:

3 + 1 = 4

3/7 + 6/7 = 9/7 = 1 2/7

1 2/7 + 4 = 5 2/7

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3 years ago

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The probability distribution of the amount of memory X (GB) in a purchased flash drive is given below. x 1 2 4 8 16 p(x) .05 .10

Rama09 [41]

Answer:

a) $E(X) = 6.45$

b) $E(X^{2} )= 57.25$

c) $V(X) = 15.648$

d) E(3X + 2) = 21.35

e) $E(3X^{2} +2) = 173.75$

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g) E(X+1) = 7.45

h) V(X+1) = 15.648

Step-by-step explanation:

a) $E(X) = \sum xP(x)$

$E(X) = (1*0.05) + (2*0.10) + (4*0.35) + (8*0.40) + (16*0.10)\\E(X) = 6.45$

$E(X^{2} ) = (1^{2} *0.05) + (2^{2} *0.10) + (4^{2} *0.35) + (8^{2} *0.40) + (16^{2} *0.10)\\ E(X^{2} )= 57.25$

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$E(3X+2) = 3E(X) + 2\\E(3X+2) = (3*6.45) + 2 \\E(3X+2) = 21.35$

$E(3X^{2} +2) = 3E(X^{2} ) + 2\\E(3X^{2} +2) = (3*57.25) + 2 \\E(3X^{2} +2) = 173.75$

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$E(X+1) = E(X) + 1\\E(X+1) = 6.45 + 1\\E(X+1) =7.45$

$V(X+1) = 1^{2} V(X)\\V(X+1) = 15.648$

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3 years ago

In a coin flipping game, a prize is won if heads is thrown 45%-55% of the time. In a second game, a prize is won if heads is thr

erica [24]

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3 years ago

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lana [24]

Answer:

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3 years ago

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3 years ago