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 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

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:

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

somebody please help me ??

Answers

Answer: d pretty sure :)

Step-by-step explanation:

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

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

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

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 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 ☺️.

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:

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

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!

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

Someone please help

Answers

Answer:

its A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Use the Pythagorean theorem

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

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

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

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

Help thank you please

Answers

The answer is Pentagonal prism

Answer:

Pentagonal Prism

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!

Earn some points : 10x5

Answers

Answer:

50.....

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

Answer:

50

Step-by-step explanation:

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

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

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

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 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:

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!

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

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