1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vagabundo [1.1K]
4 years ago
9

A and B are two events. P(A)=0.6 , P(B)=0.3 and P(A and B)=0.1 . What is the value of P(A or B) ?

Mathematics
1 answer:
Aloiza [94]4 years ago
6 0
<h3>Answer: The value of P(A or B) is 0.8.</h3>

Step-by-step explanation: We are given P(A)=0.6 , P(B)=0.3 and P(A and B)=0.1.

P(A and B)=0.1 could be written as P(A∩B) = 0.1.

We need to find P(A or B)  that is P(A∪B) = ?

We know formula,

P(A∪B) = P(A) + P(B) - P(A∩B)

Plugging values in formula, we get

P(A∪B) = 0.6 + 0.3 - 0.1

P(A∪B) = 0.9 -0.1

P(A∪B) = 0.8.

<h3>Therefore, the value of P(A or B) is 0.8.</h3>
You might be interested in
4. Nine fruit juice bottles contain 4 1/2 litres of fruit juice between them.
brilliants [131]

Answer:

2\frac{1}{2} litres or 2.5 litres

Step-by-step explanation:

From the question, 9 fruit juice bottles contain 4\frac{1}{2} litres of fruit juice. Therefore, to find how many litres of fruit juice would be contained in 5 fruit juice bottles, you multiply 5 by 4\frac{1}{2} litres and you divide the product by 9.

i.e. Let the quantity of the fruit juice for 5 bottles be x.

9 juice bottles ===> 4\frac{1}{2} litres

5 juice bottles ===> x

∴x = \frac{5 * 4\frac{1}{2} }{9} litres

x = \frac{5 * 4.5}{9} litres

x = \frac{22.5}{9} litres

x = 2.5 litres or 2\frac{1}{2} litres

Hope this helps!!!

3 0
3 years ago
Each morning papa noted the birds feeding on his birdfedder . So far this month he had seen 59 blue jays ,68 black crows , 12 re
Oduvanchick [21]
To solve this question, you need to first look at the total amount of birds and then at the percentage of the blue jays that fed on the bird feeder out of all the other birds.

To calculate the total you add them all together:
59+68+12+1 = 140 birds 

Then the percentages of the blue jays that fed on his bird feeder are:
59/140 *100 = 42.143%

You want to see how many blue jays we can expect to see out of 300 birds. 
So you divide 300 by 100 to see what 1% is = 3 birds 

Then you multiply this amount (1% = 3 birds) by 42.134% which is the percentage of blue jays we can expect to see out of the 300 birds. 
3*42.134 = 126.43 

You round this off to 126 because you cant expect to see half a bird. Even if the answer had been 126.9, you would have rounded it of to 126 because no matter how close it is to the next whole number; you either have a whole bird or you don't.

Final Answer = 126
5 0
3 years ago
The volume of a cone, V, is represented by , where r is the cone’s radius and h its height.
Arlecino [84]
So the height will equal 95.50 inches.

So if you double the height the volume is 1800cm3 and that is double the original volume 

And if you double the height the volume is 3600cm3 and that is the triple the original volume 
8 0
3 years ago
If a is an odd integer and b is an even integer, which of the following makes an odd integer?
Serga [27]

9514 1404 393

Answer:

  D.) a+2b

Step-by-step explanation:

The integers 'a' and 'b' can be any, so you can choose a couple and evaluate these expressions to see what you get. For example, we can let a=1 and b=0. For these values, the offered expressions evaluate to ...

  A) 3(0) = 0 . . . even

  B) 1 +3 = 4 . . . even

  C) 2(1+0) = 2 . . . even

  D) 1 +2(0) = 1 . . . odd

_____

<em>Additional comment</em>

These rules apply to even/odd:

  • odd × odd = odd
  • odd × even = even
  • even × even = even
  • odd + odd = even
  • odd + even = odd
  • even + even = even

Then A is (odd)(even) = even; B is (odd)+(odd) = even; C is (even)(whatever) = even; D = (odd)+(even) = odd.

7 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!<br><br> What is [100(−4)^n-1} equal to?
nikklg [1K]

Answer:   -5100

<u>Step-by-step explanation:</u>

\sum^4_1[100(-4)^{n-1}]\qquad \rightarrow \qquad a_1=100\ \text{and r = -4}\\\\\\S_n=\dfrac{a_1(1-r^n)}{1-r}\\\\\\\\S_4=\dfrac{100(1-(-4)^4)}{1-(-4)}\\\\\\.\quad=\dfrac{100(1-256)}{1+4}\\\\\\.\quad=\dfrac{100(-255)}{5}\\\\.\quad=20(-255)\\\\.\quad=-5100\\

3 0
3 years ago
Other questions:
  • You’re given three angle measurements of 30°, 70°, and 80°. How many triangles can you construct using these measurements?
    15·1 answer
  • Select Expansion or Contraction to correctly describe the type of dilation for each given scale factor.
    14·1 answer
  • The distance covered<br>by a car in<br>3x hours is<br>27x3_9x²+3x. Find the rate of the car​
    11·1 answer
  • In the diagram above, Z1 = 40°.<br> Find the measure of Z2.<br> Z2 = [?]°
    12·2 answers
  • Write a system of linear equations for the problem below(you do not have to solve it) Twenty-six students attended the community
    13·1 answer
  • How long will it take for money to double if it is invested at 7% compounded monthly?
    15·1 answer
  • 3x + 4y = 7 and 8x + 4y = 2<br> Are they parallel perpendicular or neither?
    10·1 answer
  • Slove for x<br> Show all work
    15·2 answers
  • Pls answer my question I will mark brainliest
    10·1 answer
  • Please help asap no one has been able to solve it :(<br> I need help
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!