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2 years ago

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You need a mean score of at least 90 points to get an ""A"" average. What do you need to score on your fifth test to earn at lea

st a 90?

1 answer:

Semmy [17]2 years ago

8 0

Answer:

85

Step-by-step explanation:

at least a 85 %bcz it's go bring you higher

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A bank in the Bay area is considering a training program for its staff. The probability that a new training program will increas

WITCHER [35]

Answer:

$P(B' \cup A') = P((A \cap B)') = 1-P(A \cap B)= 1-0.32=0.68$

See explanation below.

Step-by-step explanation:

For this case we define first some notation:

A= A new training program will increase customer satisfaction ratings

B= The training program can be kept within the original budget allocation

And for these two events we have defined the following probabilities

$P(A) = 0.8, P(B) = 0.2$

We are assuming that the two events are independent so then we have the following propert:

$P(A \cap B ) = P(A) * P(B)$

And we want to find the probability that the cost of the training program is not kept within budget or the training program will not increase the customer ratings so then if we use symbols we want to find:

$P(B' \cup A')$

And using the De Morgan laws we know that:

$(A \cap B)' = A' \cup B'$

So then we can write the probability like this:

$P(B' \cup A') = P((A \cap B)')$

And using the complement rule we can do this:

$P(B' \cup A') = P((A \cap B)')= 1-P(A \cap B)$

Since A and B are independent we have:

$P(A \cap B )=P(A)*P(B) =(0.8*0.4) =0.32$

And then our final answer would be:

$P(B' \cup A') = P((A \cap B)') = 1-P(A \cap B)= 1-0.32=0.68$

5 0

2 years ago

PLZ SOLVE I BEG U

3241004551 [841]

The plane's airspeed is 140:)

8 0

2 years ago

Why is the product of 5/4 and 4 larger than 4?

zubka84 [21]

A simple answer is because 4 and 5/4 is equal to 5 and 1/4. Because 5/4 is 1/4 more than 4/4, or 1.

5 0

2 years ago

Find the Value of A. a/15 = 5

mamaluj [8]

Answer:

A/15=5

so multiply 15*5

you would get 75

therefore a=75

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

From first principle find the derivative of logx

Archy [21]

Hello!

$\large\boxed{\frac{dy}{dx}logx = \frac{1}{xln10} }$

Recall that:

$logx$ can be rewritten as:

$log_{10}x$

Use the equation for the derivative of a log expression:

$\frac{dy}{dx}log_{a}u = \frac{1}{ulna} * u'$

Substitute in the values in the expression:

$logx = \frac{1}{xln10} * 1 = \frac{1}{xln10}$

4 0

2 years ago