Mathematics High School

For two independent events A and B, Pr(A or B) = 0.8 and Pr(B) = 0.3. From this, find Pr(A).

Answers

Answer 1

Answer:

please give me brainlist and follow

Step-by-step explanation:

Correct option is

A

5/7

As A and B are independent

0.8=P(A∪B)=P(A)+P(B)−P(A)P(B)

=0.3+P(B)−(0.3)P(B)

⇒0.5=(0.7)P(B)⇒7P(B)=5

Related Questions

What is 4 1/2 + -17 1/4 it doesn’t have to be simplify xo

Answers

Answer:

-14 3/4

Step-by-step explanation:

i am not super sure about this. the fraction is right though. i hope

Use matrix method to solve 2+y=3,x+2y=9

Answers

Answer:

x= -1, y= 5

Step-by-step explanation:

Please see the attached picture for the full solution.

Matrix A is called the coefficient matrix. This means that its elements are the coefficient of x and y. In matrix X, write the unknown variables. Then write the constants in matrix B.

Theorem:

[tex]{A}^{ - 1} A = I[/tex]

☆ I is an identity matrix and can be treated as 1 when multiplying.

[tex] {A}^{ - 1} = \frac{1}{ |A| } adj(A)[/tex]

☆ [tex] |A|[/tex] is the determinant of A

☆ adj(A) is the adjoint of matrix A

Earn some points : 10x5

Answers

Answer:

50.....

................

Answer:

50

Step-by-step explanation:

Create a system of linear equations with infinitely many solutions. In your final answer, include the system of equations
and the graphs of the lines!.

Answers

Answer:

Step-by-step explanation:

let the system be 2x+3y=4

8x+12y=16

suppose you have a bag of 25 marbles and 3 of the marbles are white.If you choose one without looking, what is the probability you choose a white marble? Write this probability as a percent . Use a word or phrase to describe this probability.​

Answers

Answer:

3/25

THERE IS AN 11% CHANCE

can i get brainliest

Step-by-step explanation:

Answer:

12%

Step-by-step explanation:

3 is 12% of 25. So you would have a 12 percent chance of getting a white marble.

3 ÷ 25 = 0.12 = 12%

Percent formula

P × V1 = V2

somebody please help me ??

Answers

Answer: d pretty sure :)

Step-by-step explanation:

what is the measurement of GAB

Answers

6 I think...................

Step-by-step explanation:

option B 52 is the correct answer of this question.

plz mark my answer as brainlist plzzzz.hope this will be helpful to you ☺️.

If you know how to do this correctly, please help me!! Thank you. 30 points :)

Answers

Answer:

Step-by-step explanation:

parell lines have same slopes

perpendical line slope product is -1

   

What is the distance between points (4,214) ( 4 , 2 1 4 ) and (4,712) ( 4 , 7 1 2 ) on a coordinate grid?

Answers

Answer:

5 1/4 units

Step-by-step explanation:

Use the distributive property to rewrite the expression -1 (x -2)

Answers

Answer:

Step-by-step explanation:

Distributive property: a*(b + c) =(a*b) + (a*c)

Multiply x by (-1) and (-2) by (-1)

-1(x - 2 ) = (-1)*x - 2 *(-1)

              = -x + 2

what is the vaule of x ?

Answers

5x+10+55=90
-65 on both sides
5x=25
divide both sides by 5
x=5

Answer:

5

Step-by-step explanation:

(5x + 10) + 55 = 90

5x + 10 + 55 = 90

5x + 65 = 90

5x + 65 - 65 = 90 - 65 (the 65 crosses off)

5x = 25

5x/5 = 25/5

x = 5

Dante is mailing a box with a length of nine 1/2 inches a width of 8 inches and a height of 6 inches what is the volume of the box

Answers

Answer:

456 in³

Step-by-step explanation:

To find the volume of the box, use the volume formula, V = lwh

Plug in the length, width, and height:

V = lwh

V = (9.5)(8)(6)

V = 456

So, the volume of the box is 456 in³

slope of (0.2,-0.9) (0.5,-0.9) how do i solve this and get the answer

Answers

Step-by-step explanation:

THE SLOPE IS 0

HOPE THIS HELPS

A bakery sold 147 chocolate cupcakes in a day, which was 49% of the total number of cupcakes sold that day. How many total cupcakes did the bakery sell that day?

Answers

Answer:300

Step-by-step explanation:

What is the slope-intercept form of this equation?
8x + y = 12

Answers:
Y= 2/3x + 2
Y= 4/3x + 6
Y= -4/3x + 6
Y= -4/3x + 2

Answers

Answer:

y = -8x + 12

Step-by-step explanation:

Slope intercept form: y = mx + b

m ---> Slope   & b ----> y-intercept

8x + y = 12

Subtract 8x from both sides

y = -8x + 12

Find the lateral surface area of the triangular prism.
A) 360 cm2
B) 380 cm2
C) 400 cm2
D) 420 cm2

Answers

Answer:

is it A?

Step-by-step explanation:

I think it's A because no one has answered!

Plz help with this don't just take my points

Answers

Answer:

Using values of x=3 and x=-21 the result of AB and AC comes same.

Hope it helped

PLS mark BRAINLIEST

Answer:

x = 3

Step-by-step explanation:

Using the geometric mean for altitude:

x + 9 = √18 *  8 = √144,

x + 9 = 12,

x = 3

Solution: x = 3

If Mr. Phillips bought 1 3/4 pounds of raspberries, who bought more fruit, Ms. Winn or Mr. Phillips?

Answers

Answer:

i think mr phillip bought more fruit

Step-by-step explanation:

Help thank you please

Answers

The answer is Pentagonal prism

Answer:

Pentagonal Prism

please help i will give brainliest, thanks

Answers

Answer:

2x-2  -2 is the y intercept and the 2x is the rate of change its easy lol

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

PLEASE HELP ME 20 POINTS PLEASE
Lyla got a haircut. If she had 2 cut off and
her hair is now 8 inches long, find the
length of her hair before she got it cut.

Answers

Answer:

10 inches long

Step-by-step explanation:

Answer:

10 inches is the anwser

Step-by-step explanation:

8 +2 =10

1)
Find the range of the function for the domain (-2,0,4}.
Show your work.
f(x)=5x²+4

Answers

Answer:

(24,4,84)

Step-by-step explanation:

Just subtitute each value

Determine number of solutions​

Answers

No solution
Cause if you substitute the y
Ur final answer will be -2
When we have negative in the answer
It means no solution

Please solve this and show your work. 9.4 + p = 4.8

Answers

Answer:

9.4 + p = 4.8

9.4 + p - 9.4 = 4.8 - 9.4

p = -4.6

Answer: p=-4.6

Step-by-step explanation:

you need to rearrange the terms first.

9.4+p=4.8    

p+9.4-9.4=4.8-9.4

p=-4.6 after you subtract

This Question is confusing the heck out of me can someone help me with it.

Answers

I’m pretty sure it is at 3 seconds because that is the only other time it hits 20. Hope this helps!

What is the common ratio for geometric sequence: 5,15,45,135 ?​

Answers

Answer:

the common ratio is 3

Step-by-step explanation:

to solve for the common ratio, I like to take the second term and divide it by the first term

15/5 = 3

then I will check the rest of the terms

15*3 = 45

45*3 = 135

It looks like the common ratio is correct!

what is 5.52×0.25 explain​

Answers

Answer: 1.38

Step-by-step explanation:

552

x 25

02760

11040

02760+11040=13800.

then you put your decimal over 4 spots and you take the 2 zeros off the end and get your answer of

1.38

Need help with the answer please and thank

Answers

Answer:

Here is the step: Area of triangle = 1/2 (height x base) = 1/2 (9 x 18) = 81

Step-by-step explanation:

Then the Area of the rectangular = 12 x 18 = 216

So the  total Area of the figure is = 81 + 216 = 297

I hope it help.. give me brainiest

Someone please help

Answers

Answer:

its A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Use the Pythagorean theorem

Determine the measure of the vertical angle. Find x. Step by step ? If not that’s fine.

Answers

Answer:

x=60

Step-by-step explanation:

125=2x+5

125-5=120

120÷2=60

x=60

Other Questions
1. Elle ____demande de jouer au tennis avec elle. (me)2. ric et Thierry ____demandent des gteaux et des crpes. (her)3. Tu ne ____donnes pas de stylos. (us)4. Je ____demande d'apporter des fleurs. (you, fam.)5. Ils ne ______rpondent pas. (you, form.)6. Le professeur _____pose des questions en classe. (them)7. Tu vas _____parler demain matin. (him)8. Est-ce que vous ____avez parl de la fte samedi soir? (me)9. Je vais ___ envoyer des photos de mes vacances. (you, fam.)10. Elles _____tlphonent pour leur anniversaire. (them) How would an increase in taxes influence the size of the multiplier in a four sector model Please help I will mark you brainliest ! Add-10 + 5=Add. -19 + -6 solve the simultaneous equations 3 x - 5 y = 5 ,x + 10y= 4 Which of these is a compound? A. Na B. Cl C. NaCl D. C Who was the lowest social class in colonial Central America?IndiansSpanish born in SpainSpanish born in Central Americamestizos In at least two sentences, explain the three components of citizenship. hi please help ill give brainliest please point c and point d are plotted on the graph. plot points a and b to form rectangle abdc with an area of 36 square units. plot point e at (2, 4). explain why it is important to follow a course or a program in keeping with your value system Identify at least two similarities and two differences between installment plans of the 1920s and credit cards of today. Someone plz help me giving brainliest Why dont we notice a difference between mass and weight on Earth? Can someone please help me! ASAP What is the process of how dispatch works and how do 911 operators interact with law enforcement on a daily basis? find the value of given expression[tex] \sqrt{310 \times 310} [/tex] if a specific variant of a character was passed down to its offspring, which of the fallowing is the offspring inheriting A. a recessive traitB. a dominant trait\C. a trait.D. a disorder Write the polynomial 4x+5x^3+17x^5-7 in descending order. I NEED THE ANSWER NOW!!!Goals of the CrusadesA. Reduce the power of European kings B. From alliances with Muslim leadersC. Give European peasants equal treatmentD. Protect the Byzantine Empire