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4 years ago

Find the probability P(E or F) if E and F are mutually exclusive, P(E)=0.30, and P(F)=0.45.

1 answer:

7 0

Since the probabilities are mutually exclusive, we know that they don't interact with eachother. If I were to contextualize this, say two events that depend on eachother were a venn diagram. We would see that to find P(A and B) or P(A or B) would require you to find the intersection between the two. In this case, the probabilities would be akin to a spinner. We see that the spinner has a few sections, A and B being part of them. P(A or B) would be the probability of picking either section, which would just be P(A) or P(B) while P(A and B) would be the product of the two sections based on the multiplication rule.

So, using this newfound information we can say that P(E or F) = P(E)+P(F)=.30+.45=.75

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Please help! ^^ will give brainiest

ddd [48]

3×10=30+1=31 is the true meaning and answer for this question.
Hope you good times!

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4 years ago

Read 2 more answers

What is the sign of 3x y3xy3, x, y when x>0x>0x, is greater than, 0 and y<0y<0y, is less than, 0?

kaheart [24]

Answer:

B ) Negative

Step-by-step explanation:

Given the expression 3xy

when x>0 and y<0

The value of the expression 3xy will be negative.

This is because the product of a positive and negative number will always be negative.

For illustration,

Let x=5>0 and y=-5<0

3xy=3(5)(-5)=-75

NOTE:

$-X-=+\\-X+=-\\+X+=+$

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3 years ago

Your race car weighs 1.5 tons. To make the car faster, you replaced the steel body with carbon-fiber and reduced the weight by 3

Elenna [48]

1.5 tons = 3000 pounds (because 1 ton is 2000 pounds)
Subtract 300 pounds, and you get 2700 pounds.

8 0

4 years ago

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Please help me ASAP! thank you ^-^ As part of a new advertising campaign, a beverage company wants to increase the dimensions of

ipn [44]

Answer:

B 137.32 cm³

Step-by-step explanation:

The original volume is

V = pi r^2 h

V = pi (3)^2 ( 12)

V =108 pi cm^2 = 339.12

the diameter increases by 1.12 6*1.12 = 6.72

r = 6.72 /2 =3.36

The height will increase by 1.12 so 12*1.12

V = pi ( 3.36)^2 ( 13.44)=476.4391834

The difference is

476.4391834 - 339.12 = 137.3191834

To the nearest hundredth

137.32

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3 years ago

What's three equivalent ratios for 6/9

vaieri [72.5K]

Answer:

Three equivalents ratios for 6/9 could be 2/3, 12/18 and 18/27

Step-by-step explanation:

An equivalent ratio refers to the same number but written differently. For example, for the ratio 6/9, we could obtain the following equivalent ratios.

First equivalent ratio

You can divide the numerator and denominator by 3. You get 2/3

$\frac{6\div 3}{9\div 3}=\frac{2}{3}$