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3 years ago

Evaluate the expression for the given value of the variable 3a+4b; a= -6, b=-5

Mathematics

2 answers:

Dimas [21]3 years ago

5 0

3 x -6 + 4 x -5
= -18+ -20
= -38

m_a_m_a [10]3 years ago

3 0

Given 3a+4b, substitute -6 for a and -5 for b:

3(-6) + 4(-5) = -18 - 20 = -38

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PLEASE HELP!!

aev [14]

Answer:

D. No, because $P(A|B)=0.22$ and the $P(A) = 0.53$ are not equal.

Step-by-step explanation:

Given:

Probability of doing yard work is, $P(A)=53\%=0.53$

Probability of raining, $P(B)=68\%=0.68$

Probability of doing yard work and it raining is, $P(A\cap B)=15\%=0.15$

Now, two events A and B are independent if,

$P(A|B)=P(A);P(B|A)=P(B)$

Conditional probability of event A given that B has occurred is given as:

$P(A|B)=\frac{P(A\cap B}{P(B)}\\P(A|B)=\frac{0.15}{0.68}=0.22$

So, $P(A|B)=0.22\ and\ P(A)=0.53$

Since, $P(A|B)\ne P(A)$ , A and B are not independent events.

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Semmy [17]

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Step-by-step explanation:

Dotted line on the axis is covering y infinitely, so theres an inequality on x, and the line is at -1, so x should be > - 1

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riadik2000 [5.3K]

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