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

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

need help so bad pleasss

Answers

Answer:

y=2/3x-6

Step-by-step explanation:

i hope this helps :)

what is the 4 one pls help

Answers

Answer:

where are the shapes?

Step-by-step explanation:

Answer:

I think it is 2.5 cm.

Step-by-step explanation:

Find the future amount at the end of two years for a $7000 investment that earns 7% at the end of each year

Answers

Answer:

$8,014.30

Step-by-step explanation:

Which best describes the solutions to the inequality x> 102
10 and every whole number greater than 10
a rational number infinitely close to 10 but greater than 10, and all other rational numbers greater than 10
11 and every whole number greater than 11
a rational number infinitely close to 10 but greater than 10, and all other whole numbers greater than 10

Answers

Answer:

Step-by-step explanation:

i took the test

Answer:

Question 2-(B) a rational number infinitely close to 10 but greater than 10, and all other rational numbers greater than 10

Step-by-step explanation:

Describe how to find what value of x must be to minimize the function f(x) = 9x^{2} - 36x + 32 using factoring.

Answers

Answer: x=2, f(x)=-4

Step-by-step explanation:

Given

[tex]f(x)=9x^2-36x+32[/tex]

Solving it, add and subtract 4 to it

[tex]\Rightarrow f(x)=9x^2-36x+36-4\\\Rightarrow f(x)=(3x)^2+(6)^2-2\times 3x\times 6-4\\\Rightarrow f(x)=(3x-6)^2-4\\\\\text{here minimum value of }\ (3x-6)^2\ \text{is 0 for x=2}\\\text{so mnimum value of }\ (3x-6)^2-4\ \text{is}\ -4[/tex]

Answer: after you factor use the results (3x-6)^2 - 4 to find the minimum X value but picking a number for the X value to solve to 0.

Step-by-step explanation:

Plug x=2 into the equation and it solves to 0 leave out the -4 because this is the y value

To the nearest whole number, what is the value of m?
O 13
O 14
O 43
O 45

Answers

Answer:

Step-by-step explanation:

The answer Is B. 14. I hope this helps

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Answers

Answer:

Step-by-step explanation:

If you figure out the median you'll see that for 8th grafe its 21 and 7th 25 therefore 4 points higher

A Ferris wheel has a radius of 72 feet. What is the distance a passenger will travel one time around the Ferris Wheel

Answers

31 seconds it will take to get around without it stopping

soda bottles each
The machine can make
minute.
The graph shows the relationship between time
and the number of soda bottles a machine can
make. Use the points (2,40) and (6,120) to find
the number of soda bottles the machine can make
each minute.
Number of Soda Bottles Made
200
160
120
Number of Soda Bottles
80
40
8
10
Time (minutes)

Answers

Answer:

20 Soda Bottles.

Step-by-step explanation:

I have done questions like this before.

help plz im so stuck

Answers

Answer: yes

Step-by-step explanation:

Solve this please quickly everything on the picture. Thank you

Answers

Answer:

yes because i said

Step-by-step explanation:

bc i said

The Hernandez family orders 3 large pizzas. They cut the pizzas so that each pizza has the same number of slices, giving them a total of 24 slices.
The Wilson family also orders several large pizzas from the same pizza restaurant. They also cut the pizzas so that all their pizzas have the same number of slices. For the Wilson family, the equation y = 10x represents the relationship, where x represents the number of pizzas and y represents the number of total slices.
Which statements best describe the pizzas bought by the Hernandez and Wilson families? Select two options.
For the Hernandez family, the equation y = 3x represents the relationship between the number of slices and number of pizzas, where x represents the number of pizzas and y represents the number of total slices.
For each family, a graph of the relationship between number of pizzas, x, and number of slices, y, goes through the point (0, 0) and is a straight line.
The Hernandez family’s slices are smaller than the Wilson family’s slices.
If the Wilson family ordered 3 large pizzas from the same restaurant as the Hernandez family, they would have more slices than the Hernandez family after each family cut their pizzas into slices.
The constant of proportionality is 10 for the Wilson family, but cannot be determined for the Hernandez family.

Answers

Answer:

B and C sry if Im not correct

Step-by-step explanation:

Maria who is 6 feet tall stand 20 feet away from the base of a tree she looks up at the top of the tree at 43° angle of elevation what is the approximate height of the tree rounded to the nearest 10th but

Answers

Answer:

24.7 feet

Step-by-step explanation:

Maria who is 6 feet tall stands 20 feet away from the base of a tree she looks up at the top of the tree at a 43° angle of elevation.

what is the approximate height of the tree rounded to the nearest 10th?

We solve the above question using the Trigonometric function of Tangent

tan θ = Opposite/Adjacent

θ = Angle of elevation

Adjacent = Distance from the base of the tree = 20 feet

Opposite => Height of the tree = x

θ = 43°

tan 43 = x/ 20 feet

x = tan 43 × 20 feet

x = 18.650301723 feet

Approximately = 18.7 feet

We are told in the question that Maria is 6 feet tall

Therefore, the height of the tree = Maria's height + Height

= 6 feet + 18.7 feet

= 24.7 feet

Which angle is congruent to ∠8? Select all that apply.
A. ∠1
B. ∠2
C. ∠3
D. ∠4

Answers

Answer:

Angle 1,Angle 4

Step-by-step explanation:

They're

The value of angle ∠1 and angle ∠4 will be congruent with angle ∠8. The correct options are D.

What are lines and angles?

Lines are straight with little depth or width. Perpendicular lines, intersecting lines, transversal lines, and other types of lines will be covered. An angle is a shape formed by two rays emerging from a common point. In this field, you may also come across alternate and corresponding angles.

Given that there are two lines e and f cut by the transversal line g making different angles.

From the property of the alternate interior angles the two angles, 1 and 4 are congruent to angle 8. The value is mathematically written as,

∠1 = ∠4 = ∠8

Therefore, the value of angle ∠1 and angle ∠4 will be congruent with angle ∠8. The correct options are D.

To know more about lines and angles follow

https://brainly.com/question/25716982

#SPJ2

Using the digits 1, 3, 5, 7 at most once, you can make many three-digit numbers. What is the maximum possible sum of two such distinct numbers?

Answers

Answer:

1504

Step-by-step explanation:

Given the digits :

1, 3, 5, 7

The maximum possible sum of two distinct three digit numbers formed from the digits above will be the sum of the the two hight possible three digit numbers that can be formed.

Highest three digit number = 753

Next highest = 751

The sum of these two. Values gives :

753 + 751 = 1504

Whats the answer for number 13? Thank you!

Answers

Answer:

B) 16

Step-by-step explanation:

If you look at the graph and go to 4 hours, you can see a dot at 14. So, in this case the nearest answer choice to 14 is 16, as it would be your best estimate if you follow the imaginary line you can draw in the middle of all that points.

(-2) elevado a -4 respuesta porfavor

Answers

Answer:

Step-by-step explanation:

-2 to the 4th power is expressed as;

= (-2)^-4

= -2 × -2 × -2 × -2

= (-2×-2)×(-2×-2)

= 4×4

= 16

Hence -2 to the 4th power is equal to 16

can someone please help me??????

Answers

I think it could be c

Does someone have an answer

Answers

Answer:

for what

Step-by-step explanation:

helo?

Answer:

x = $11

Step-by-step explanation:

5x = $55

9x = $99

2x = $22

In order to find the relationship between x and y, all we have to do is divide y by the term.

$55 ÷ 5 = 11

$99 ÷ 9 = 11

$22 ÷ 2 = 11

Therefore, each ticket sold is $11, or x = $11

pleaseeee i need help ASAP!!!

Answers

Answer:

3734.95

Step-by-step explanation:

Pi = 3.14 to find the radius of a circle we multiply the circumference and Pi. Then square it. So, 34.48x3.14 = 108.2672 then 108.2672² = 3734.94651 which rounds to 3734.95

The answer is : 3734.95 in.

The regular price of a brand new pair of shoes is $72. When using a coupon the price went down to $54. What was the percent off on the coupon used?

Answers

it was 18% off coupon

The difference between two numbers is 3. The sum of the same tow numbers is 13. What is the
product of the two numbers?

Answers

Answer: 40

Step-by-step explanation:

Let the two numbers be a and b.

Therefore,

a - b = 3 ....... i

a + b = 13 ....... ii

From equation I, a = 3 + b

Put a = 3+b into equation ii

a + b = 13

3 + b + b = 13

3 + 2b = 13

2b = 13 - 3

2b = 10

b = 10/2

b = 5

Since a = 3 + b

a = 3 + 5

a = 8

The product of the numbers will be:

= 8 × 5

= 40

A singles tennis court measures (8x - 2) ft long and (3x – 3) ft wide.

Answers

Answer:

24x²-30x+6

Step-by-step explanation:

multiply the parentheses

(8x-2)(3x-3)

calculate multiply

8x•3x-8x•3-2•3x-2•(-3)

collect like terms

24x²-30x+6

solve this pls thank you

Answers

Answer:21

Step-by-step explanation:9+10=21

Answer:

ok nlol how u been

Step-by-step explanation:

Simplify 55÷5×2^3÷4 HELP I WILL FAIL

Answers

[tex]55 \div 5 \times 2^{3} \div 4[/tex]

using pemdas do:

exponents first:

2x2x2=8

[tex]55 \div 5 \times 8 \div 4[/tex]

then divide and multiply from the left to right and the equation will equal:

[tex]22[/tex]

CAN U PLS ANSWER WILL GIVE BRAINLIEST

Answers

Answer: 20 hrs

Step-by-step explanation:

-3w-3x-7w+4x-2w
please answer this

Answers

Answer:

Solution

−12+

I know it LOL

The area of a rectangle is 27 it?, and the length of the rectangle is 3 ft less than twice the width. Find the dimensions of the
rectangle

Answers

SOLUTION:
The length of a rectangle is 3 feet less than twice its width and area of rectangle is 27 ft2. Find the dimension

Length= Width= should not be a negative number.

ANSWER 1: W=4.5 ft The width is 4.5 feet.

Im not sure how to do this or what function to use SIN, COS, or TAN but if you could walk me through it that would be so so so amazing!!! Thanks so much have an amazing day!!!

Answers

Answer: 3.8

Step-by-step explanation:first, you need to figure out what side you’re looking for. Side AC is opposite of the angle you’re given. They also give you length of side AB which is 4. That is the hypotenuse (side directly across from right angle). So, you have the hypotenuse, and need the find the opposite side measure. Which option uses opposite and hypotenuse? That’s Sin. So, you would do: sin70 = ? / 4.

sin (of given angle)= opposite / hypotenuse.

Sin (70 degrees) = ? / 4

Then you solve for “?”

Type sin70 into your calculator, then multiply both sides by 4 to get “?” by itself. You should get 3.758770483, which rounds to 3.8

Solve for x :)))))))

Answers

Answer:

Step-by-step explanation:

X/24 = 36/48

X/24 = 3/4

X = 3/4 × 24 = 18

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