If P(A) = 0.5, P(B) = 0.3, and P(A or B) = 0.6, find P(A and B)

Answers

Answer 1
P(A or B) = P(A) + P(B) - P(A and B), which means that the probability that A or B occurs is equal to the probability that A occurs plus the probability that B occurs minus the probability that both A and B occur.

So, you know P(A), P(B) and P(A or B) and you can solve for P A and B) =>

P(A and B) = P(A) + P(B) - P(A or B)

P(A and B) = 0.5 + 0.3 - 0.6 = 0.8 - 0.6 = 0.2

Answer: P(A and B) = 0.2




Related Questions

Count the total number of atoms in CaCo2

Answers

3. Ca= 1 atoms Co2= 2 atoms, so your answer is 3 atoms

A linear equation has more than one y intercept.what can you conclude about the graph of the equation?

Answers

I'd say the graph isn't functional
A line can be determined with two points.

The y-intercept is where a graph intersects the y axis.

Let 2 points lie on the y axis. Those are the y-intercepts.

2 lines can only have 0 intersections, 1 intersection, or infinitely many intersections.

Thus, if a line intersects another line more than 2 times, both lines must be the same line.

Using that information to create a line, you would have the line x=0.

x=0 is a vertical line that intersects the y-axis infinitely many times since they are the same line.

However, x=0 is not a function.

Have an awesome day! :)

If bookshelf is 28 inches long how many 7/8 inch thick books will it hold

Answers

so it is 28/(7/8)
which is 32

how do I plot y=2x-4

Answers

The formula: y = mx + b
m = slope or rise/run
b = y-intercept

So, the y-intercept would be -4 and the slope would be 2.

First, you would need to find the y-intercept, -4. 

Next, you would use the slope, 2, to find the coordinate. Remember, 2 = 2/1
You would rise 2 and run 1. 

The coordinates to form a line would be (1,-2), (3,2), and (-1,-6). All you would need to do is draw a line through the coordinates. 

I hope this helps!

Below is last month's business income statement for Korey's Comics. Using the information provided in the statement, determine net income for Korey's Comics last month. Korey?s Comics Monthly Business Income Statement Revenue Sales: $6,825 Returns: $215 Net Sales: Cost of Goods Sold Beginning Inventory: $780 Purchases: $1,795 Goods Available for Sale: Ending Inventory: $795 Total Cost of Goods Sold: Gross Profit:: Operating Expenses Wages: $1,460 Rent: $650 Utilities: $185 Advertising: $90 Taxes: $125 Total Operating Expenses: Net Income: a. $2,320 b. $2,510 c. $4,830 d. $6,610

Answers

The Answer is A) 2,320. Here is how we arrive at that number:
Net Sales = Revenue - Returns = 6,825 - 215 = 6610
COGS = Beg Inv + Purch - Ending Inv = 780 + 1,795 - 795 = 1780
Gross Profit = Net Sales - COGS = 6610 - 1780 = 4830

OP Expenses:
Wages     1,460.00
Rent         650.00
Utilities     185.00
Advert      90.00
Tax          125.00
Total Operating Expenses: 2,510

Net Income = Gross Profit - Operating Expenses = 4,830 - 2510 = 2320
Net Income: 2,320

Based on the information given the net income is $2320.

Net income

Using this formula

Net Income = Gross Profit - Operating Expenses

Where:

Net Sales = Revenue - Returns

Net sales=$6,825 -$215

Net sales=$6610

Cost of goods sold= Beginning Inventory + Purchase - Ending Inventory

Cost of goods sold =$780 + $1,795 - $795

Cost of goods sold=$1780

Gross Profit = Net Sales - Cost of goods sold

Gross profit =$6610 - $1780

Gross profit=$4830

Operating Expenses:

Wages     $1,460

Rent         $650

Utilities     $185

Advert      $90

Tax          $125

Total Operating Expenses $2,510

Let plug in the formula

Net income=$4,830 - $2510

Net income=$2320

Inconclusion the net income is $2320.

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A popular chain of superstore makes 30.479×10730.479×107 dollars in profit each year. One of its store makes 210.2×104210.2×104 in profit each year.



How many times greater is the profit made by the chain than by one of its store?

Enter your answer, using scientific notation, in the boxes.

Answers

Final answer:

To find how many times greater the chain's profit is than one store's, divide the chain's profit by the store's profit. After dividing the coefficients (30.479/210.2) and subtracting the exponents (7-4), we find that the chain's profit is 145 times greater than that of one store, which is 1.45 × 10² in scientific notation.

Explanation:

To determine how many times greater the profit made by the chain is than by one of its store, we need to divide the total profit of the chain by the profit of one store. Both profits are given in scientific notation as follows:

Chain's annual profit: 30.479 × 107 dollars

One store's annual profit: 210.2 × 104 dollars

To perform the division, we divide the coefficients and subtract the exponents:

(30.479 × 107) / (210.2 × 104) = (30.479 / 210.2) × 10(7 - 4)

Calculating the division of coefficients and exponents separately:

Coefficients: 30.479 / 210.2 ≈ 0.145

Exponents: 103, since 7 - 4 = 3

The result is:

0.145 × 103, which is the same as 1.45 × 102 in scientific notation after adjusting the decimal point one place to the right. Therefore, the chain's profit is 145 times greater than the profit of one store.

The boiling point (at atmospheric pressure) of Ammonia is -28 1/10°F and of Propylene is -53 9/10°F. What is the difference in their boiling points?

-82°F

26°F

25 4/5°F

-81 4/5°F

Answers

I think it's 25 4/5 F

Answer:

yeah I got it right

Step-by-step explanation:

What’s the ratio for 34in to 14ft

Answers

14 feet is equivalent to 168 inches
34 : 168
------------------------------------------- 
Now Simplify
17 : 84
-------------------------------------------
17 : 84 should be your Ratio
34 inches is 2 feet 10 inches, or 2 10/12 feet, or 2.83333....

Then the ratio 34 in to 14 ft    is


2.83333... ft
---------------- = approx. 0.21    (no units of measurement).
     14 ft

Write the standard form of the line that contains a slope of -3/8 and passes through the point (5, -4). Include your work in your final answer. Type your answer in the box provided or use the upload option to submit your solution.

Answers

Answer and work shown above

Answer:  [tex]3x+8y+17=0[/tex]

Step-by-step explanation:

We know that the equation of a line passing through a point (a,b) ans has slope 'm' is given by :-

[tex](y-b)=m(x-b)[/tex]

Given : Slope : [tex]m=\dfrac{-3}{8}[/tex]

Point = (5, -4)

Then, the equation of a line passing through a point (5, -4) ans has slope [tex]\dfrac{-3}{8}[/tex] is given by :-

[tex](y-(-4))=\dfrac{-3}{8}(x-5)\\\\\Rightarrow\ 8(y+4)=-3(x-5)\\\\\Rightarrow\ 8y+32=-3x+15\\\\\Rightarrow\ 3x+8y+32-15\\\\\Rightarrow\ 3x+8y+17=0\ \ [\text{In standard form}][/tex]

Therefore,  the standard form of the line that contains a slope of [tex]\dfrac{-3}{8}[/tex] and passes through the point (5, -4):

[tex]3x+8y+17=0[/tex]

A system of equations is graphed on the coordinate plane.

2y = 3x − 1
4y = 6x − 2

Select the number of solutions for the system of equations from the drop-down menu.

A. no solution
B. one solution
C. infinitely many solutions

Answers

Maybe it's c, not sure

what is an rational number

Answers

A rational number is a number that can be written into a fraction. pi, some square roots, e, etc., are irrational numbers(numbers that cannot be written into a fraction).
a rational number is when a number can be in the form of p/q. When p/q are integers and q is not equal to 0
hope this helps!

A sporting goods company can ship 6 football's in each carton. How many cartons
are needed to ship 75 football's?

Answers

13 because 75/6 is 12.5 but you can't have half a carton so therefore it would be 13. Please mark me brainliest

2.365 x 12.4 ASAP
can you please show work like this how you got it

Answers

The product to that question is 29.326. You had to do some borrowing for this question, but here is the work on how I got the answer. The numbers part of the answer are kind of cut out, but if you work it right, you should get the answer above.
Final answer:

To perform the multiplication 2.365 x 12.4, you need to multiply each digit of the numbers, remembering to keep track of decimal places, and then add all the partial results together. This gives a final result of 29.326.

Explanation:

To solve the multiplication problem 2.365 x 12.4, you use the standard multiplication method, which involves multiplying each digit of the multipliers. Follow the steps below:

Multiply 5 (from 2.365) by each digit in 12.4: 5x4=20, 5x2=10, 5x1=5. Write this number, 11820, under the problem and mark the decimal.Multiply 6 (from 2.365) by each digit in 12.4, but shift one place to the left. Do the same for 3 and 2 in 2.365, shifting each time to the left.Add all the resulting numbers up, making sure your decimal places align correctly (2 places in this problem).

The final result of the multiplication 2.365 x 12.4 is 29.326.

Learn more about Multiplication here:

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Systems of equations word promblems. I need help answering this questions >. < Tysm. Please explain it also.

3)Flying to kampala with a tailwind a plane averaged 158 km/h. on the return trip the plane only averaged 112 km/h while flying back into the same wind. find the speed of the wind and the speed of the plane in still air

Answers

Answers:
Speed of Wind = 23 km/hr
Speed of Plane in Still Air = 135 km/hr

==================================================
==================================================

Explanation:

First let's go over two definitions

Headwind = wind that is flowing in the opposite direction of the plane's direction of movement; i.e., wind that is coming from the head direction. Headwinds slow the plane down

Tailwind = wind that is coming from the tail of the plane and moving in the same direction as the plane's destination. Tailwinds speed the plane up

=======================

Let
w = speed of wind
p = speed of plane in still air
both speeds are in km/hr

With a tailwind, the plane will speed up so it will go from p to p+w. Therefore, the first equation is
p+w = 158
since the new speed (wind+plane's movement without wind) is 158 km/hr

Similarly, in a headwind, the speed reduces to 112 so 
p-w = 112
because we take the plane's speed p and subtract off the wind speed w that slows down the overall speed

=======================

The system of equations is
p+w = 158
p-w = 112

Add up the equations and notice how w cancels

p+w = 158
p-w = 112
---------
2p+0w = 270

Leading us to
2p = 270
2p/2 = 270/2
p = 135

The speed of the plane in still air is 135 km/hr

=======================

Use p = 135 to find w
p+w = 158
135+w = 158
135+w-135 = 158-135
w = 23

The speed of the wind is 23 km/hr

What two ratios are equivalent to 11/12

Answers

(11 x2) (12 x 2)
22 : 24 

or 

(11x3) (12 x 3)
33 : 36

both are equivalent to 11/12


Carmen measured a house and made a scale drawing. The scale of the drawing was 9 millimeters = 1 meter. What is the drawing's scale factor? Write it as a fraction.

Answers

When you write a scale factor, the units have to be the same.  In this case, 9mm on the drawing represents 1 meter on the house.  Change 1 meter to millimeters (1m = 1000mm).

9 mm on the drawing represents 1000 mm on the house.

The scale factor is 9 to 1000, or, as a fraction,  9/1000.

a number between 67 and 113 that is a multiple of 3, 6 and 9

Answers

9x9 = 8 It is a multiple of 9 and it is in the range of 67 and 113.

What are the steps to the problem 4,3021 - 835.6?

Answers

43021.0
- 835.6
------------
42185.4

The final result is 3466.5.

To solve the subtraction problem 4,302.1 - 835.6, follow these steps:

Align the Numbers: Line up the numbers by their decimal points.
4302.1- 835.6Borrow if Necessary: If the digits in the minuend (top number) are smaller than the subtrahend (bottom number), borrow from the next left digit.Perform the Subtraction: Subtract each column starting from the right:Perform 4302.1 resulting the final number 3466.5

The final answer is, 3466.5.

The graph below represents one function and the table represent s a diffrent function how are the functions similar?

Answers

Where's the graph? Can't solve it without the graph.

A rectangular flower garden is 8 ft longer than its width. It is surrounded by a brick wall 2 ft wide. The area of the walk is 176ft squared. Find the dimensions of the flower garden

Answers

The dimentions of the rectangular flower garden is
8+x+8+x
16+2x * x = 176

x^2=80
x=4 sqrt(5)
Dimentions:
Length of parallel walls: 8+4 sqrt(5)
Other Walls: 4 sqrt(5)

Find the perimeter and area of each figure

Answers

first you multiply 15 and 13 to find the perimeter but to find the area you just add 15 by 15 and 13 by 13. The sum of both will get you the area
Problem
Find the perimeter and area of each figure.

Result
1. P = 56 A = 195 
2. P = 76 A = 345

Solution
Perimeter = 2(w)
Area = wl

1. P = 2(15 + 13) = 2(28) = 56
A = 15 · 13 = 195

2. P = 2(23 + 15) = 76
A = 23 · 15 = 345

Molly works at an electronics store. Her last customer purchased a DVD player for $67.65 and five DVDs for $57.93, including taxes. If the customer paid her with two $100 bills, how much change should she give him?

Answers

67.65 + 57.93 = 125.58

200.00 - 125.58 = $74.42 change back

Which of the following inequalities match the statemennine is more than a number

9 < n

9 ≥ n

9 ≤ n

9 > n

Answers

So, you want to eat the bigger one right? So imagine the < and > are mouths trying to eat... The statement say 9 is more so you'd eat 9.

9 > n
                      Hope this Helps!


Answer:

9 > n

Step-by-step explanation:

think of this <ess it kinnda looks like it says less so > means the greater than symbol

Hopes This Helps :) please make me brainless just one time

why is the square root of 32 irrational

Answers

Its irrational because a number times itself does not equaly go into 32 pluse the decimals behind it are not finite. The square root of 32 cannot be written as a ratio nor a fraction.

How do I solve this?

Answers

The solution is -8+8 is 0 then The k/10 =-8 bring 10 to -8 it will get multiplied 10*-8=-80 so k=-80
1. Isolate the absolute value.
2. Set the inside of the absolute value equal to positive and negative of the right side and solve both equations. Very often you get two solutions.

-8 + 8|k/10| = -8

Add 8 to both sides.

8|k/10| = 0

Divide both sides by 8.

|k/10| = 0

Now set k/10 equal to 0 and -0.
Since -0 is the same as 0, in this case you will only get one equation from the absolute value part.

k/10 = 0

Multiply both sides by 10.

k = 0

True or False ?
A line represented by the equation x= 1/2 is parallel to x-axis?

Answers

no it is parallel to the y axis
Y=1/2 is not paralel axis it paralel to y
İt is false

Which statement and explanation about the product of a 3-digit number and a 2-digit number is correct?

A. The product always has 4 digits. The least 3-digit number is 100, and the least 2-digit number is 10. The product of 100 and 10 has 4 digits, so any product of a 3-digit and a 2-digit number must have 4 digits.
B. The greatest number of digits in the product is 6. The greatest 3-digit number is 999, and the greatest 2-digit number is 99. The product of 3 digits and 2 digits equals 6 digits, so no product of a 3-digit and a 2-digit number can have more digits.
C. The product always has 5 digits. The greatest 3-digit number is 999, and the greatest 2-digit number is 99. The product of 999 and 99 has 5 digits, so any product of a 3-digit and a 2-digit number must have 5 digits.
D. The greatest number of digits in the product is 5. The greatest 3-digit number is 999, and the greatest 2-digit number is 99. The product of 999 and 99 has 5 digits, so no product of a 3-digit and a 2-digit number can have more digits.

Answers

Its D- 999*99 is a 5 digit #, but 100*10 is a 4 digit- 1000- so it can be less.

The correct statement is :

D. The greatest number of digits in the product is 5. The greatest 3-digit number is 999, and the greatest 2-digit number is 99. The product of 999 and 99 has 5 digits, so no product of a 3-digit and a 2-digit number can have more digits.

The smallest 2 digits is 10, and the smallest 3 digits is 100

Their product is:

[tex]10 \times 100 = 1000[/tex] i.e. 4 digits

The greatest 2 digits is 99, and the greatest 3 digits is 999

Their product is:

[tex]99 \times 999 = 98901[/tex]  i.e. 5 digits

This means that;

No product of the digits can have more than 5 digits

And, no product can have less than 4 digits

Hence, (d) is correct

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Mrs. Gonzalez buys a total of 32 crayons for her classroom. Each pack contains 8 crayons. How many packs of crayons does Mrs. Gonzalez buy ?

Answers

4 packs of crayons she did buy.
4 packs. Just do 32/8 and you get 4

Margo used the equation y=-4x-1 to graph a line. She graphed the point (-1, 0), Does (-1, 0) lie on the line? If not, what mistake did Margo make?

Answers

It does because -1 0 is going to on q4 so it is going be on the so yes
No, it doesn't. -1 is the y intercept, meaning the first point would be (0, -1) rather than (-1, 0)
The line does not cross the point (-1, 0)

Choose an equation that represents the line passing through the point (2, -4) with a slope of 1/2.

Answers

You use the formal y-y1=m(x-x1) to solve this and you plug in the #s so 2 and -4 will be x1 and y1 and 1/2 will be plunges is as m
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