3 years ago

first number plus twice a second number is 1 . Twice the first number plus the second totals 8. Find the numbers.

Mathematics

1 answer:

Alexus [3.1K]3 years ago

6 0

Answer:

First number is 5, second number is -2

Step-by-step explanation:

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Find P(C|Y) from the information in the table. To the nearest tenth, P(C|Y) =

seropon [69]

From the definition of conditional probability,

$\mathbb P(C\mid Y)=\dfrac{\mathbb P(C\cap Y)}{\mathbb P(Y)}$

and by the law of total probability,

$\mathbb P(Y)=\mathbb P(Y\cap A)+\mathbb P(Y\cap B)+\mathbb P(Y\cap C)$

In other words, each cell in the grid left of and above the total column and row represents the joint probabilities (e.g. $\mathbb P(X\cap A)=\dfrac{32}{146}$ ). So,

$\mathbb P(C\mid Y)=\dfrac{15}{30}=\dfrac12=0.5$

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3 years ago

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amm1812

Answer:

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2 years ago

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What is the answer to -8+5b= -6+26-9b

Slav-nsk [51]

Answer:

b=−1/14ot+2

Step-by-step explanation:

Let's solve for b.

to−8+5b=−6+26−9b

Step 1: Add 9b to both sides.

ot+5b−8+9b=−9b+20+9b

ot+14b−8=20

Step 2: Add -ot to both sides.

ot+14b−8+−ot=20+−ot

14b−8=−ot+20

Step 3: Add 8 to both sides.

14b−8+8=−ot+20+8

14b=−ot+28

Step 4: Divide both sides by 14.

14b

−ot+28

−1

ot+2

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3 years ago

If f(x)=5x-8, which of the following is the inverse of f(x)?

kirza4 [7]

y=5x-8

5x=y+8

x=y/5+8/5 is the inverse of f(x)

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zvonat [6]

Answer:

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Step-by-step explanation:

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3 years ago