Answer:
a. 0.52 = 52% probability that Linda gives the correct answer to a question.
b. 0.7692 = 76.92% probability that Linda knows the answer
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Supplies the correct answer:
Event B: Knows the answer
A. What is the probability that Linda gives the correct answer to a question?
0.4(knows the answer)
1/5 = 0.2 of 1 - 0.4 = 0.6(guesses the answer). So
[tex]P(A) = 0.4 + 0.2*0.6 = 0.52[/tex]
0.52 = 52% probability that Linda gives the correct answer to a question.
B. What is the conditional probability that Linda knows the answer, given that she supplies the correct answer?
Intersection of events A and B is knowing the answer and giving the correct answer, which means that [tex]P(A \cap B) = 0.4[/tex]
The desired probability is:
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.4}{0.52} = 0.7692[/tex]
0.7692 = 76.92% probability that Linda knows the answer
write an expression that is equivalent to -0.5(14a-22)
-0.5(14a-22) = _?_a+_?_
You can see in the picture pls help for homework
Answer:
For the .5s, go between the numbers for example, 4.5 is between 4 and 5 so you graph between them. Remember that the rule is (x,y) so graph the x (first number) on the horizontal line and graph the y (second number) on the vertical line.
Find the surface area of the
triangular prism.
5 cm
8 cm
7 cm
3 cm
Answer:
The surface area of the triangular prism is = 94.641016151378 cm^2
You and a friend were invited to a party you both were asked to bring pizzas and chips
What is the full question!?
Answer:
Then if each would bring 1 of each so there would be 2 pizzas and 2 bag of chips
Step-by-step explanation:
lol id.k/ if this was supposed to be a joke but here I am ◑﹏◐
Can someone help me with this I’m really bad in geometry
Find Y Round to the nearest tenth.
у
12
25°
I redrew the triangle (just turned it around it make it easier to understand).
Find the volume. Show your work
I’ll give brainliest
Answer:
360 km^2
Step-by-step explanation:
(this is a rectangular prism)
Volume = length * width * height
Volume = 5 * 6 * 12
Volume = 360 km^2
Carl jumped 11 5/12 feet in the long jump. Ben jumped 9 7/8 feet. How much farther did Carl jump than Ben?
Answer:
Step-by-step explanation:
1 13/24
9 x 1/4 =?
1x 23/100=?
Answer:
fwoggy
Step-by-step explanation:
7.5E-12= write the expression in scientific notation
Answer:
7,500,000,000,000 it think
Step-by-step explanation:
You are planning to take a group of friends to the movies for your birthday. The local movie theater charges $12.99 per
person. When you check the company's website, you find that they also offer a special group rate. The group rate is only $8.99
per person, but also includes a $20 reservation fee in addition.
What is the minimum number of people that would need to attend your party in order for the group rate to be a better deal?
A
4 people
B)
5 people
Eliminate
6 people
QUESTION 1
1.1
1.1.1 Wiite 2 368 000 in words
1.1.2
Round the following number 864 345,537
1.1.2.1 to the nearest thousand
1.1.2.2 to two decimal places
2/3a-7+7/18a-5 1/6 no need explanation just the answer
Answer:
19a−219/18
Step-by-step explanation:
(2)/(3)a-7+(7)/(18)a-5(1)/(6)
=19a−219/18
MY GO*D!!!!?!?!?! SOMEONE HELP?????
The Ratio of J ulian's age to cyn thia's age, to Adrian's age is: 8:5:2. If Adria n is 14 years old, what is the sum of the ages of the other two kids?
9514 1404 393
Answer:
91
Step-by-step explanation:
Use the Distributive Property to
REWRITE -3(c-8)
Answer:-3c +24
Step-by-step explanation:
-3(c) and -3 (-8)
-3c and two negatives equal a positive, so +24
Hey guys I need some heeeeeeelp please and thank you; Please explain
50 points
Answer:
8 full gas cans
Step-by-step explanation:
The volume of the rectangle is 8000 cm³. That divided by 1000 is 8...
-4a - 7 = 3 - 4a - 7
a) -6
b) no solution
c) -8
d) -9
Answer:
it should be 3
..............
Claire flips a coin 6 times. What is the probability that the coin will show tails 3 times?
0.016
0.047
0.125
0.313
Answer:
d
Step-by-step explanation:
Find the Value of each power.
1. 12^0
2. 12^2
3. (2/7^3
4. 0.4^2
5.(4/9^1
6. 0.7^3
Answer:
1
144
8/343
0.16
4/9
0.343
please help me with my math homework
Hi there!
[tex]\large\boxed{UV = 13}[/tex]
Since U and V are midpoints of the legs, then UV is the average of both WX and ZY.
Therefore:
(ZY + WX)/2 = UV
Substitute in the given expressions:
[(6x + 5) + (x + 7)]/2 = 8x - 3
Simplify by combining like terms:
(7x + 12)/2 = 8x - 3
Multiply both sides by 2:
7x + 12 = 16x - 6
Subtract 7x from both sides and add 6 to both sides:
18 = 9x
Divide both sides by 9:
18/9 = x
x = 2.
Plug in this value of x into the equation for UV:
8(2) - 3 = 16 - 3 = 13.
The sale price of $24 was 80 percent of the regular price.
What was the regular price?
Which of these expressions is equivalent to log (
9.4)?
O A. log (9) - log (4)
O B. log (9) • log (4)
O C. 9. log (4)
O D. log (9) + log (4)
I would really appreciate it if someone could answer this I will give a brainlist:)
Answer:
x = 10.2
Step-by-step explanation:
Formula:
a² + b² = c²
16² + b² = 19²
256 + b² = 361
b² = 361 - 256
b² = 105
b = 10.2
I think of a number, subtract 5 and the result
is 9.
Answer:
14 is the number subtracted by 5 to get to 9
Step-by-step explanation:
14-5=9
Solve (x - 4)2 = 5.
help
Answer:
13/2
Step-by-step explanation:
2x-8=5
2x=5+8
2x=13
x=13/2
hope it helps
Solve for x.
4x + 1 = 3x - 2
x= [?]
ALGEBRA Find the value of x in each figure.
HELP ASAP I WILL
MARK BRAINLIEST
Answer:
x=104°
Step-by-step explanation:
180=(x+4) +72
180-72=x+4
108=x+4
108-4=x
104=x
x=104°
Hope this helps! :)
please y HELP MATHEMATICS
240 because I know how to do this
Help mee
simplify the expression 3(x - 6) + (4x + 12) - 6x
Answer:
x - 6.
Step-by-step explanation:
3(x-6) = 3x -18
3x -18 + 4x + 12 -6x = x - 6
Which expression is equivalent to 2.5+4(3/4a-5)-9.5?
Answer:
11
Step-by-step explanation:
Answer:
The first one is 2.5+3a-20-9.5,
and 3a-27 for the second one.
Four times w is 16.
Answer:
w = 4
Step-by-step explanation:
4w=16
w = 16/4
w = 4
Step-by-step explanation:
The question is unclear. If the original question is telling you to make the word expression into an algebraic expression, the answer would be 4w = 16. On the other hand, if it was asking you to solve the given equation, the answer would be w = 4.