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3 years ago

Is ≥ -8 open ,half opened,or closed

Mathematics

2 answers:

strojnjashka [21]3 years ago

7 0

It is closed bc it has an equal sign with it

Nesterboy [21]3 years ago

6 0

Closed, because it includes -8

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According to the general equation for conditional probability, if P(AB)= 3/10 and P(B) =2/5, what is ? P(A l B)?

Alexus [3.1K]

The formula for conditional probablity states that

$P(A | B) = \cfrac{P(A \cap B)}{P(B)}$

Since we know both numerator and denominator, we only need to plug in the values:

$P(A | B) = \cfrac{P(A \cap B)}{P(B)} = \cfrac{\frac{3}{10}}{\frac{2}{5}} = \cfrac{3}{10}\cdot\cfrac{5}{2} = \cfrac{3}{4}$

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3 years ago

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Answer: 173.3 feet

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3 years ago

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Rashid [163]

Answer:

3 9/10

Step-by-step explanation:

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3 years ago

Anna is 9 years old, and this year she received $10 from her aunt on her birthday. Her aunt has told

son4ous [18]

Answer:

$M(y)=10y+10$

Step-by-step explanation:

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3 years ago

The difference between the roots of the quadratic equation x2+x+c=0 is 6. Find c.

NemiM [27]

We have that
$x_{1} - x_{2} = 6$
Let y be the first root, then y - 6 will be the second one. Since both roots make the quadratic equation equal to 0, we have that:
$y^{2} + y + c = (y - 6)^{2} + (y - 6) +c$
Solve for y:
$y^{2} +y +c = y^{2} - 12y + 36 + y - 6 +c \\ y + 12y - y = 30 \\ y = \frac{5}{2}$
Plug in y = 5/2 into original quadratic equation and solve for c:
$( \frac{5}{2}) ^{2} + \frac{5}{2} +c = 0 \\ c= - \frac{5}{2} - \frac{25}{4} \\ c = - \frac{35}{4}$
So, the answer is c = -35/4

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3 years ago