If the odds against​ Deborah's winning first prize in a chess tournament are 1 to 7, what is the probability of the event that she will win first​ prize?

Answers

Answer 1

Answer:

7/8

Step-by-step explanation:

Odds against are the ratio between losses and wins.

odds against = L / W

Probability of winning is the ratio between wins and all games.

probability = W / games

probability = W / (W + L)

The odds against are 1 to 7.

1/7 = L / W

W = 7 L

The probability is therefore:

P = (7 L) / (7 L + L)

P = 7/8


Related Questions

Given that U = {1, 2, 3, 4, 5, 6), find the complement of the set A = {1, 3, 5).

Answers

Answer:

complement of set A={2,4,6}

hope it helps

plz mark as brainliest


How many liters each of a 30% acid solution and a 50 % acid solution must be used to produce 70 liters of a 40 % acid solution? (Round to two decimal places if
necessary.)

Answers

Answer:

  30%: 35 liters

  50%: 35 liters

Step-by-step explanation:

The desired concentration is halfway between the concentrations of available solutions, so the mixture will be equal amounts of each.

  35 liters of 30% acid and 35 liters of 50% acid must be used

_____

If you want to write an equation, it usually works well to let the variable represent the amount of the most concentrated constituent: 50% acid. Then the amount of acid in the final mix is ...

  0.50x +0.30(70 -x) = 0.40(70)

  0.20x +21 = 28 . . . . simplify

  0.20x = 7 . . . . . . . . . subtract 21; next, divide by 0.20

  x = 35 . . . . . . amount of 50% solution (liters)

  70-x = 35 . . . amount of 30% solution (liters)

Solve. 4 11/16 ÷1 1/4 ? 2 1/8 2 1/4 3 7/16 3 3/4

Answers

Answer:

3 1/4

Step-by-step explanation:

4 1/16÷1 1/4=

65/16÷5/4=

65/16*4/5=

260/80=

3 20/80=

3 1/4

9) 1 = 0.99 + z? 10​

Answers

Answer:

0.99+10=10.99

Step-by-step explanation:

What is the least common denominator of the equation 3/4(x-3)-1/2=2/3?
2
9
12
36

Answers

12, because 4 times 3 equals 12, 2 times 6 equals 12, and 3 times 4 equals 12.

Jay's father is twice as old as jay. In 20 years Jay will be two-thirds as old as his father. How old is each now?

Answers

Well take this for an example

Answer:

the answer is 2

Step-by-step explanation:

the solution to the division problem writtren as a mixed number is 10x426=4260

Answers

Answer:

266 1/4th. I hope this helped, and I would appreciate it if you gave it a good rating. :)

Step-by-step explanation:

1,065 ÷ 4 = 266 and remainder = 1 =>

1,065 = 266 × 4 + 1 =

1,065/4 =

(266 × 4 + 1) / 4 =

266 + 1/4 =

266 1/4

The required division is given as 4260 / 10 = 426.

Given that,
The solution to the division problem writtren as a mixed number is 10x426=4260

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,


Here.
10 * 426 = 4260
4260  / 10 = 426
Dividend / divisor = quotient,

Thus, the required division is given as 4260 / 10 = 426.

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can someone please help me answer this ​

Answers

Answer:

A. True

Step-by-step explanation:

congruent- in agreement or harmony

both triangles are the same

Factors that influence a hypothesis test with the t statistic Suppose you conduct a hypothesis test about a population mean when the standard deviation is unknown calculating a t statistic and determining whether to reject the null hypothesis. Assume that your t statistic positive value and that you will reject the null hypothesis when t is very large. For each of the potential the components of your study design or the results listed below, determine the change to the t statistic, select "Increases, " "Decreases, " or "Stays the same" from the dropdown menu in the right-hand column.

Answers

Please find attachment for full question Answer:

1. Stays same

2. Decrease

3. Stays same

4. Decrease

Explanation:

Please find attachment

What is a possible value of x if -5 < x< 0?​

Answers

Answer:

x=-4,-3,-2or-1

Step-by-step explanation :0

Can someone answer this pls?? FAST

Answers

Correct answers= 18•2 1/4= 9

Incorrect answers= 12•-1/2=-6

Answer= 3

When a number is decreased by 20% of itself, the result is 96. What is the number?
The number is

Answers

Answer:

480

Step-by-step explanation:

Take 96 and divide it by 2 to get what ten percent would be: 48

Then just multiply 48 by ten for 100% (The number): 480.

To check, take a calculator and do 480-20% and it equals 96.

The answer is 120.
We took away 20% of the original number, so we are left with 80% of the original number.
So we can say 80% = 96
Divide both sides by 80 to get 1%
And we get 1% = 1.2
And then multiply both sides by 100 to get 100% (aka, original number)
100% = 120 :)

Six times the sum of a number and 8 is 30. Find the number.

Answers

Answer:

-3.

Step-by-step explanation:

=  6(Sum+8) = 30

=  6Sum + 48 = 30

= 6Sum = -18

= Sum = -3

Hope this helps you :)

Answer:

the answer to this is 6(-3+8)=30

Enter the addition problem so the fractions have a common denominator. Then find
the sum. 1/10 + 3/5

Answers

Answer:

7/10

Step-by-step explanation:

1/10 + 3/5

1/10 + 6/10

7/10

Find the coordinates of Rif Q(-1, 3) is the midpoint of PR and P has

coordinates of (5, 6)

Answers

Answer:

R(-7,0)

Step-by-step explanation:

Let the midpoint of PR be Q(-1,3) where P is (5,6). To get the other coordinate R, we will use the midpoint formula as shown;

Q(X,Y) = {(x₁+x₂)/2, (y₁+y₂)/2}

From the formula;

X = (x₁+x₂)/2 and Y = (y₁+y₂)/2

From the coordinates given, X = -1, Y = 3, x₁ = 5 and y₁ = 6. To get x₂ and y₂, we will substitute the given points into the expressions above;

To get  x₂;

X = (x₁+x₂)/2

-1 = (5+x₂)/2

cross multiply

-1*2 = 5+x₂

-2 = 5+x₂

subtract 5 from both sides

-2-5 = 5+x₂-5

x₂ = -7

Similarly to get y₂

Y = (y₁+y₂)/2

3 = (6+y₂)/2

cross multiply

3*2 = 6+y₂

6 = 6+y₂

subtract 6 from both sides

6-6 = 6+y₂-6

y₂ = 0

Hence the coordinate of R(x₂, y₂) is (-7,0)

If anyone is good in Pythagoras theoram please help me

Answers

Answer:

a^2+B^2=c^2

Step-by-step explanation:

Step-by-step explanation:

(Hyp)² = (Base)² + (Height)²

C² = a² + b²

C= √a²+b²

This is the formula to find Hypotenuse of a right angled triangle

An irrational number multiplied to a zero equals a rational number
O True
O False

Answers

Answer:

Irrational

Step-by-step explanation:

Answer:

false. an irrational number multiplied to a zero equals an irrational number.

How many quarters are in $20

Answers

Answers :-
80 quarters

Find the area of a semicircle with a radius of 3 inches.

Answers

The area of the semicircle is 14.1372

Answer:

Area of a CIRCLE with radius of 3 inches is

PI * radius^2 =

3.14159265 * 3^2 =

28.27433385  square inches.  

Since we are dealing with a SEMI-CIRCLE, we divide that by 2 and get:

14.137166925  square inches which rounds to about

14.14 square inches

Step-by-step explanation:

identify the range of a function plsss help

Answers

Answer:

C.

Step-by-step explanation:

Range is the set of y-values that are outputted by x-values in a function.

We see that our y-values span from -1 to 3, and since they are closed dots, they are included in our range. Therefore, our range is C.

What do the equations have in common? y = -2 x + -3 y = -2 x + -3

Answers

Answer:- the equation have -2x common.

-2x is common. But -2 is the gradient. Which means the gradient is common. Simply putting -2x is common is incorrect since this is a linear equation. You’re supposed to state what aspect they have in common. The gradient is common which is -2


5 n/2= (a + b), for a

Answers

Answer:

5n/2 - b =a

Step-by-step explanation:

5n/2 = (a + b)

subtract b from both sides

5n/2 - b = a

Write an equation based on the word problem below and solve it. *
You have $150 in your savings
account. You earn money to
walk your neighbor's dog every
day after school. If it takes you
8 weeks to have $246 in your
account, how much money, m,
do you earn per week?
m = $13 per week
m = $12 per week
Om = $11 per week
O m = $10 per week

Answers

Answer:

m = $12 per week

Step-by-step explanation:

The equation would be 8m + $150 = $246. To find out how much money you earn a week, you need to solve for m.

First, subtract $150 from both sides of the equation. Doing so will leave you with an equation of 8m = $96.

Next, divide both sides by 8. This will leave you with m = $12, which is your final answer of how much money you earn a week.

Historically, making a quilt was an opportunity for communities to come together and socialize with one another. Is there a modern practice similar to that of making a quilt? A time when a group of individuals come together to create something.​

Answers

Answer:Yes

Step-by-step explanation:

Kind of like the Declaration of Independence if you’re in the US people gathered to create the declaration of our freedom from British control, way back in 1776

Liz has 72 stamps in her collection. Risa, who just started her collection, has 9 stamps. Liz’s collection is how many times larger than Risa’s?

Answers

Answer:

8× (8 times)

Explanation:

For this question, divide.

72 ÷ 9 = 8.

Your answer will be 8.

Answer:

8 times as many

Step-by-step explanation:

8x9=72


If Beyoncé performed as many songs as
Robyn per capita, how many would you
expect Beyoncé to sing?

Answers

Answer:

20 songs

Step-by-step explanation:

Robyn sang a total of 13 songs for a population of 62000 people, the per capita is the ratio of the total songs sang to the total number of people. Hence:

Robyn per capita = songs performed / population = 13 / 62000

Beyonce sang to a population of 91000 people, given that Beyonce and Robyn had the same per capita, therefore:

Beyonce per capita = songs performed / population

13/62000 = songs performed / 91000

songs performed = 13/62000 × 91000 = 19.08

songs performed ≈ 20 songs

Beyonce is expected to sing about 20 songs

Answer:

Around 20

You can use the Distributive property-

To “distribute” means to divide something or give a share or part of something. According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.

is 2 by 2=4 rational or inrational and why

Answers

Answer: Rational number.

Step-by-step explanation:

Rational numbers:

Any number which can be expressed in the form of p/q.

Where q is not equal to Zero.

p,q are integers.

Here in 2/4 ,

p=2

q=4

Answer:  Rational

Step-by-step explanation:

A rational number is an integer divided by an integer where the result is a terminating or repeating decimal.

2 x 2 = 4    --> 4 is terminating  so it is a rational number.

If you are in a higher level math class, the reason is:

Rationals are CLOSED over multiplication.

Which expression is equivalent to 25 x 1/5?

Answers

Answer:

The answer would be E.

When you solve 25 x 1/5, you get 5.

When you solve 25 ÷ 5, you get 5.

The equivalent expression is 25 ÷ 5.

Option E is the correct answer.

What is an expression?

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example.

1 + 3x + 4y = 7 is an expression.

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

25 x 1/5

= 25 x 1/5

= 5 x 5 x 1/5

= 5

Now,

1/25 x 5

= 1/5

1/25 x 1/5

= 1/125

1/25 ÷ 1/5

= 1/25 x 5

= 1/5

5 ÷ 25

= 5/25

= 1/5

25 ÷ 5

= 5

We see that,

25 x 1/5 and 25 ÷ 5 have the same value.

Thus,

The equivalent expression is 25 ÷ 5.

Learn more about expressions here:

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Una piscina rectangular de 15 metros de largo por 9 metros de ancho està rodeada por un
camino de cemento de ancho uniforme. Si el área del camino es 112 metros cuadrados, ¿cuánto
mide su ancho?

Answers

Answer: 2 meters.

Step-by-step explanation:

Let w = width of the cement path.

Dimensions of pool : Length = 15 meters , width = 9 meters

Area of pool = length x width = 15 x 9 = 135 square meters

Along width cement path, the length of region = [tex]2w+15[/tex]

width = [tex]2w+9[/tex]

Area of road with pool =  [tex](2w+15) (2w+9)[/tex]

[tex]= 4w^2+30w+18w+135\\\\=4w^2+48w+135[/tex]

Area of road = (Area of road with pool ) -(area of pool)

[tex]\Rightarrow\ 112 =4w^2+48w+135- 135\\\\\Rightarrow\ 112= 4w^2+48w\\\\\Rightarrow\ 4 w^2+48w-112=0\\\\\Rightarrow\ w^2+12w-28=0\ \ \ [\text{Divide both sides by 4}]\\\\\Rightarrow\ w^2+14w-2w-28=0\\\\\Rightarrow\ w(w+14)-2(w+14)=0\\\\\Rightarrow\ (w+14)(w-2)=0\\\\\Rightarrow\ w=-14\ or \ w=2[/tex]

width cannot be negative, so w=2 meters

Hence, the width of the road = 2 meters.

Solve for x.
-3(2x – 1) – 3x – 4 = 17

Answers

The Answer Is x=-2

Hope This Help's

Answer:

[tex] \star \: \: \: \star \: \: \: \star \: \: \: \star \: \: \: \star \: \: \: \star \: \: \: \star \: \: \: \star \: \: \: \star \: \: \: \star \: \: \: \star \: \: \: \star[/tex]

Step-by-step explanation:

[tex]: \implies{ - 3(2x - 1) - 3x - 4 = 17}[/tex]

[tex]: \implies{ - 6x + 3 - 3x - 4 = 17}[/tex]

[tex]: \implies{ - 6x - 3x + 3 - 4 = 17}[/tex]

[tex]: \implies{ - 9x - 1 = 17}[/tex]

[tex]: \implies{ - 9x = 17 + 1}[/tex]

[tex]: \implies{ - 9x = 18}[/tex]

[tex]: \implies{ \displaystyle{x = \frac{18}{ - 9} }}[/tex]

[tex] \: \: \: \: \: \: \: \: \star{ \: \implies{ \red{x = - 2}}}[/tex]

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