A and B are two mutually exclusive events.
P(A) = 0.3 and P(A or B) = 0.7
Work out the value of P(B).

Answers

Answer 1
If the events are mutually exclusive, then P(B)=P(A or B)-P(A). This is 0.7-0.3, which is 0.4.

Related Questions

Please help me!!!!!””

Answers

Answer:

d=45t

Step-by-step explanation:

to find speed you divide the distance by the time. 67.5/1 1/2 = 45

Answer:d=45t

Step-by-step explanation:

I took the i-Ready

2.3 - 7x + 5.1 - 3x
Please help I have 5 minutes

Answers

Answer:

2.3+5.1-7x-3x

7.4-10x

What is the slope of the line that passes through the points (0,7) and (-4,3)

Answers

Answer:

The slope=1

Step-by-step explanation:

(0,7)=(x,y) and (-4,3)=(`x,`y)

The formula for finding slope= `y - y/`x - x

3-7/-4-0

-4/-4

1

Therefore, the slope=1

The graph below represents the linear equation y=1/2x-3 a second linear equation is represented by the data in the table. What is the solution to the system of e

Answers

ik its late but the correct answer is C:(2,-2)

Step-by-step explanation:

I got the answer correct on Edge 2020.

Hope this helps!!

Can somebody help me pls

Answers

Answer:

A. don't move either direction

Step-by-step explanation:

the number determines how many you move forward or backward 0 would mean u don't move at all

Answer:

a card with the number 0 would mean not to move at all south would be ''do not move in either direction''

If Alexander has not sold all of the granola after 3 days, he sells the remaining bags for
60% of the cost. What is the sale price of the individual bags of granola?

Answers

Answer:

Cost Price of Each Bag is 2.5

Total Gain is 17.5

Step-by-step explanation:

Question 2/5
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> NEXT
BOOKMARK
CHECK ANSWER
o
2
Find the area of the triangle below. The area of the triangle is
in
17 in
8in.
10 in.
15 in
6 in

Answers

i think the answer is 122,400

Find the value of F, correct to two decimal places

Answers

Answer:

F = 12.14 m

Step-by-step explanation:

F is the side opposite the given 36° angle and the given side length, 15m is adjacent. It's a cosine equation that's needed.

find the cosine of 36°

(calculator necessary)

cos(36) = 0.8090169944

We should be safe to round that to .809 for this.

cos = opp/adj

Substitute what we know:

.809 = F/15 Multiply both sides by 15

.809(15) = F

12.135 = F Round to two places.

Side F is 12.14m

4) Graph the line 2x - 7y = 14 using X- and y-intercepts.
x-intercept y-intercept
Click to add text Click to add text
O
YA
6
5
4
3
2
1
-6-5-4-3-2
1 2 3 4
5 6
2
-3
-5
-6
10:45

Answers

Answer:

(0,-2)   (7,0)

Step-by-step explanation:

Someone plz help me

Answers

Answer:

16 is the answer hope i helped!

Step-by-step explanation:

Answer:

i think it c

:D

Step-by-step explanation:

If 8x−5y=−3 is a true equation, what would be the value of 8x−5y+7?

Answers

Answer:

Value of 8x -5y + 7 is 4.

Step-by-step explanation:

Given that:

8x-5y = -3     Eqn 1

It is a true equation.

Now we have to find the value of the given expression

8x -5y + 7

Putting value of 8x-5y from Eqn 1 in the given expression

8x - 5y + 7

-3 + 7

4

Therefore,

8x - 5y + 7 = 4

Hence,

Value of 8x -5y + 7 is 4.

Help me please please

Answers

Answer:

4. c = 10

5. True

6. t = 3

Answer:

#4. 10

#5. true

#6. 3

In a large-sized fish tank, 65% of the fish are guppies. Which calculation finds the probability of getting less than 60%
guppies in a random sample of 100 fish?
Oplec
0.60 -0.65
.60.00
O Plzc
0.60 -0.65
0.65 (0.35)
100
o plec
0.65 -0.60
0.65(0.35)
100
<
0.50 -0.65
100(0.65)(0.35)
o pſz< 710010.65)(0.35)

Answers

Answer: b

Step-by-step explanation:

What number solves the equation 5(x+12)=95?

Enter your answer in the box.

plz i need an answer asap!

Answers

Answer:

Step-by-step explanation:

5(x+12)=95 (multiply 5 in the brackets)

5x+60=95 (subtract 60 on both sides)

5x=35 (divide 5)

x=7

Solve the simultaneous equations
y = 4x + 1
y = 2x2 + 7x - 1

Answers

Hope that hepled have a nice day

Try the following puzzle:

A bat and ball cost $1.10.

The bat costs one dollar more than the ball.

How much does the ball cost?

Answers

Answer:

10 cents

Step-by-step explanation:

the bat cost 1 dollar so subtract 1 dollar from 1.10 and you are left with .10 or 10 cents

Answer:

the ball costs $0.05

Step-by-step explanation:

if the total is $1.10, and the bat is $1 more than the ball, you do

1+2x=1.10. do the algebra, and you get 0.05. hope this helps.

Please I need help this is already late

Answers

the first would be A and hopes this helps

Guys please help it’s urgent!! I tried, my friend tried, my mom tried, my brother tried, and no one can get the answer she wants

Answers

Answer:

#13050

Step-by-step explanation:

lxw

30x35= 1050

Answer:

and now i tried

Step-by-step explanation:

hello new challenger (:<

The scatter plot shows the maximum noise level when different numbers of the people are in the stadium. The linear model is given by the equation y=1.5x+22.7, where y represents maximum noise level and x represents the number of people the number of people ,in thousands, in the stadium. y=1.5x+22.7

3. What is the y intercept of the linear model given? What does it mean in the context of the problem? Is this reasonable? Explain the reasoning? ​

Answers

The y intercept is 1.5x+22.7 + the linear equation which is 22

The y-intercept of the equation is 22.7 and it represents the initial value of the noise at the y-axis.

What is a scatter plot?

A scatter plot is a type of plot or mathematical diagram that displays values for two variables for a set of data using Cartesian coordinates. One more variable can be displayed if the points are coded.

Given that the scatter plot shows the maximum noise level when different numbers of people are in the stadium. The linear model is given by the equation y=1.5x+22.7, where y represents the maximum noise level and x represents the number of people,in thousands, in the stadium. y=1.5x+22.7

The equation for the maximum noise is given as, y=1.5x+22.7. In the given equation the slope of the line is equal to 1.5. The y-intercept of the equation is 22.7 which represents the initial value of the noise at the y-axis.

To know more about scatter plots follow

https://brainly.com/question/6592115

#SPJ5

Factor the expression using the greatest common factor

2x + 10 =

Answers

Answer:

2(x+5)

Step-by-step explanation:

2x+10

1.Factor our the 2 from the equation

2.Your answer after will be 2(x+5)

Answer:

Step-by-step explanation:

*HELP ME WITH THIS PROBLEM ASAP I COULD FAIL*

Answers

The correct answer is C

Let U = {q, r, s, t, u, V, W, x, y, z}
A = {q, s, u, w, y}
B = {q, s, y, z}
C ={v, w, x, y, z).
List the elements in the set (B'U C) U A'

Answers

Answer:

B'=U-B={q, r, s, t, u, V, W, x, y, z}-{q, s, y, z}={r,t, u, V, W, x, y}

A'=U-A={q, r, s, t, u, V, W, x, y, z}-{q, s, u, w, y}={r,t,v,w,x,z}

B'UC={r,t, u, V,W, x, y}U{v, w, x, y, z).={{r,t, u, V,W, x, y,z}

Step-by-step explanation:

(B'U C) U A'={{r,t, u, V,W, x,y,z}U{r,t,v,w,x,z}={{r,t, u, V,W, x,y,z}

Mr. Santos signs up for a plan in which he is offered a discounted rate for cable service for four months. After this period, the cost will be an additional $5 per month. His total cost for cable service for the first year will be $304.
Use the equation below to determine the discounted rate Mr. Santos will pay each month for the first four months.
4(x) + 8(x+5) = 304

a- $24
b- $18
c- $25
d- $22

Answers

the answer is d, you can prove this by putting “22” in the place of “x” in the equation and solving to get 304

How many degrees is 1.2 rotations counter clockwise?

Answers

Answer:

The expression is already in decimal form.

1.2

Step-by-step explanation:

(づ ̄ ³ ̄)づ

Find exact volume of the cylinder with a diameter of 10 feet and a height of 8 feet

Answers

the exact volume would be 80 feet long

1/3r + 1/6 = 5 5/6

solve this?​

Answers

Answer:

r=17

Step-by-step explanation:

Answer:

r=17

Step-by-step explanation:

1/3r+1/6= 35/6 (5 5/6)

35/6-1/6= 34/6 (5 4/6 or 5 and 2/3)

1/3r= 34/6 (5 4/6)

3*(1/3)r= (34/6)*3

r=17

Help I nee this ASAP, What is the price of 1 tennis ball if a package of three tennis balls cost $4.95?

Answers

Answer:

$1.65

Step-by-step explanation:

4.95/3=1.65

Answer:

One tennis ball costs $1.65

Step-by-step explanation:

?= price of one tennis ball

1   -   ?

3   -   4.95

Solve: 4.95×1÷3= 1.65

Sally rolled a 6-sided number cube 40 times and it landed on 4 eight times. What is the experimental probability of Sally getting a 4?

Answers

P(roll a 4) = 8/40. It is 8/40 because you rolled the a 4 eight times out of the forty tries. Hope this helps!

C 17. At high school A, the mean score of 50 students on a science test is 75.
At high school B, the mean score of 40 students on the same test is 80.
What is the mean score of the 90 students?

Answers

Answer:

Mean score of 90 students = 77.2

Step-by-step explanation:

Mean score of 50 students from school A = 75

Mean score of 40 students from school B = 80

We need to find mean score of the 90 students?

First we will find sum of scores of students from school A

We know that: [tex]Average=\frac{Sum\:of\:Terms}{Number\:of\:terms}[/tex]

We have Average = 75, Number of terms = 50, We need to find Sum of terms (scores)

[tex]Average=\frac{Sum\:of\:Terms}{Number\:of\:terms}\\75=\frac{Sum\:of\:Terms}{50}\\Sum\:of\:Terms= 75\times 50\\Sum\:of\:Terms=3750[/tex]

So, Sum of scores for School A = 3750

Now, we will find sum of scores of students from school B

We know that: [tex]Average=\frac{Sum\:of\:Terms}{Number\:of\:terms}[/tex]

We have Average = 80, Number of terms = 40, We need to find Sum of terms (scores)

[tex]Average=\frac{Sum\:of\:Terms}{Number\:of\:terms}\\80=\frac{Sum\:of\:Terms}{40}\\Sum\:of\:Terms= 80\times 40\\Sum\:of\:Terms=3200[/tex]

So, Sum of scores for School B = 3200

Now, We will find mean score of the 90 students?

Mean score of 90 students will be:

[tex]Average=\frac{Sum\:of\:Terms}{Number\:of\:terms}\\Average=\frac{3750+3200}{90}\\Average=\frac{6950}{90}\\Average = 77.2[/tex]

So, mean score of 90 students = 77.2

find the HCF of the following numbers by prime factorization method 324 & 432​

Answers

Answer:

108

Step-by-step explanation:

324 = 2 * 2 * 3 * 3 * 3 * 3

432 = 2 * 2 * 2 * 2 * 3 * 3 * 3

The HCF is 2 * 2 * 3 * 3 * 3 = 108

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