Consider the 20 points of a 4×5 grid. You randomly choose two points from the 20 points. What is the probability that the two points belong to a horizontal or vertical line?

Answers

Answer 1

Answer:

The probability of both points falling in the same row or column is 7/19, or approximately 37%

Step-by-step explanation:

The easiest way to solve this is to think of it rephrased as "what is the probability that your second point will be in the same row or column as your first point".  With that frame of reference, you can simply consider how many other points are left that do or do not fall in line with the selected one.

After selecting one, there are 19 points left.

The row that the first one falls in will have 3 remaining empty points.

The column will have 4 remaining empty points.

Add those up and you have 7 possible points that meet the conditions being checked.

So the probability of both points falling in the same row or column is 7/19, or approximately 37%


Related Questions

I have a curved surface.
I have no flat surfaces

Answers

Answer:

A spehere

Step-by-step explanation:

A sphere only made up of a curved surface

on the other hand, a cone, cylinder, etc, have a flat surface. for a cone it's the floor. for a cylinder it's the ceiling and the floor of the object

Select the correct answer.
Which expression is equivalent to x + y+ x + y +30+5)?
A. 2x + 5y+ 5
B. 2x + y + 30
C. 2x + 5y + 15
D.2x + 3y + 10

Answers

Answer:

Step-by-step explanation:

Like terms have same variable with same exponent. Combine the like terms.

x + x = 2x  {Just add the coefficient}

x + y + x +y + 30 + 5 = x +x  +  y + y   + 30 + 5

                                 = 2x + 2y + 35

i really need helppppppppppppp

Answers

Answer:

The one that starts with 13,14

Step-by-step explanation:

A function can't have repeating x values.

Answer:

no idont ansver kendin cevapla

What's the ratio 8 : 2 in it simplist form

Answers

Answer:

2:1

Step-by-step explanation:

8:4=8/4=2/1

which is equals to 2:1

sandy found seashells and 119 starfish on the beach she gave 225 of the seashells to fred how many seashells does sandy niw have​

Answers

Answer:

114?? Ummm I confused that's it......

After giving 225 of the seashells to Fred, then Sandy has -106 seashells now, which is determined by subtraction.

To calculate this, we subtract the number of seashells given to Fred from the initial number of seashells.

Seashells Sandy has now can be calculated as follows:

Seashells Sandy has now = Initial number of seashells - Seashells given to Fred

Therefore, we have:

= 119 - 225

Apply the subtraction operation to get

= -106

This negative sign indicates that there are not enough seashells

Therefore, after giving 225 of the seashells to Fred, then Sandy has -106 seashells now.

Learn more about subtraction here:

https://brainly.com/question/1927340

#SPJ4

if I eat 6 big Macs 3 happy meals, 10 milkshakes and 50 French fries what do I have?​

Answers

Answer:

A full tummy and horrible cramps with a side of diarrhea.

Step-by-step explanation:

Not from experience or anything.

Our principal has to travel from one city to the next city at an average speed of 50km/hr. Compute for the distance between 2 cities

Answers

Answer:

The answer is false or "impossible"

Step-by-step explanation:

Heres why I say this:

If the “average speed” in one hour make the car travel 50km, it means the speed could not be constant. So, it could be 90km/h during the first 30 minutes and 10km/h during the second 30 minutes. If this is the case, for example, in the next 12 minutes after the first hour, the car could be traveled 18km at 90km/h, completing 50 + 18 = 68km. The tricky word “average” makes it impossible to answer. Good try, but no cigar.

0. The temperature drops 2 degrees per hour for 3 hours. Which of the
following expressions does NOT describe this change in temperature?
a. -2 + (-2) + (-2)
b. 2(3)
d. -2 - (2) - (2)
c. -2(3)​

Answers

Answer a,b, and d

Explanation: c is the only correct expression while the rest aren’t

Answer:

B. 2(3)

Step-by-step explanation:

The other 3 all shows decreasing of 2 three times. 2(3) would be increasing.

SOMEONE PLEASEEEEEEEE!!!!!!11


Robert's new hybrid car has a gas tank that holds 12 gallons of gas. When the tank is full, they can drive 420 miles. Assume that their car uses gas at a steady rate.



a. What is the unit rate:




b. Write the equation:




c. Use your equation to find out how many gallons of gas Robert will need to drive 287 miles. 287miles =
gallons of gas

Answers

Answer:

sorry i only know the answer of c

it's 8.2 gallons

Step-by-step explanation:

12 gallons = 420 miles

12 gallons = 420 miles? gallons =287 miles

420 miles ÷ 12 gallons = 35miles/gallon

420 miles ÷ 12 gallons = 35miles/gallon287 miles ÷ 35 miles/gallon = 8.2 gallons

Answer:

Step-by-step explanation:

Unit rate = (420 miles)/(12 gallons) = (420/12 miles)/gallon = (35 miles)/gallon

:::::

Fuel consumption = (number of miles) × (1 gallon)/(35 miles)

:::::

287 miles × (1 gallon)/(35 miles) = 8.2 gallons

Number of basketball players that have signed up for a new league. What is a possible scenario that would be modeled by this equation? Consider how many teams in the league and the number of players on each team this equation could describe

Answers

Complete question :

consider the equation x/5-2=11. if x represents the number of basketball players that have signed up for a new league, what is a possible scenario that would be modeled by this equation?

Answer:

Kindly check explanation

Step-by-step explanation:

The Number of players that signed up for a new league can be modeled using the following information :

The number of players per team

The number of teams in the league

For the equation given :

x/5 - 2=11

x could represent the total number of players, with the number of teams in the league being 5 ;

if 2 players were to leave any of the teams ; we have 11 players in that team.

Answer:

The equation could model a scenario determining the number of players on each team in a league of five teams, if 2 players have to be taken out of the possible players to be referees and to keep score. There will be 11 players on each team.

Step-by-step explanation:

Help!!! Please help me I need help on my homework!​

Answers

Answer:

It's A. always

Step-by-step explanation:

Because, all a reflection does is just flip the selected segment, or shape. The only way a segments length would change is, by dilating it.

Answer:

yes  because it like a mirror

Step-by-step explanation:

PLEASE HEEEELPPPP ASAP

Answers

Answer:

y = √(3² + 3²)

9 = √(5² + x²)

Step-by-step explanation:

Diagram 1:

Hypotenuse = y

Opposite = 3

Adjacent = 3

y² = 3² + 3²

y = √(3² + 3²)

y = √(9 + 9)

y = √18

Diagram 2:

Hypotenuse ² = known leg² + unknown leg²

Hypotenuse = 9

Known leg = 5

Unknown leg = x

9² = 5² + x²

9 = √(5² + x²)

9² = 5² + x²

9² - 5² = x²

x² = 81 - 25

x = √ 56

help me please!!! 23 brainly's

Answers

Step-by-step explanation:

We can create the following equation for Jada

[tex]28x + 20[/tex]

And the following for Mai

[tex]16x + 44[/tex]

Can someone tell me how to solve -3x-4y=-2 and y=2x-5 in elimination form!!!!!

Answers

-3x-4(2x-5)=-2
-3x-8x+20=-2
-11x=-2-20
-11x=-22/-11
-11x/-11=-22/-11
x=2


Find the perimeter of the
similar figure.
48cm
60cm
Perimeter = 120cm Perimeter = [?]cm

Answers

Answer:

[tex] \huge \boxed{ \boxed{ \sf parimeter = 150cm}}[/tex]

Step-by-step explanation:

to understand thisyou need to know about:similarityPEMDASequationtips and formulas:when two shapes are similar the rotio of two sides or area or parimeter is equallet's solve:

[tex] step - 1 : define[/tex]

let the parimeter of second shape be x

[tex] \sf \frac{48}{60} = \frac{120}{x} [/tex]

[tex]step - 2 : solve[/tex]

[tex] \sf cross \: multiplication : \\ \sf 48x =72 00[/tex][tex] \sf divide \: both \: sides \: by \: 48 : \\ \sf \frac{48x}{48} = \frac{7200}{48} \\ \therefore x = 150[/tex]

what is V(0)=80(0.4)t

Answers

pretty sure the solution is t=0

Katy inherited a savings account that was started by her grandfather 20 years ago. His investment can be modeled by the function
A(t) = 10,000(1.012)^t+ 20, where A(t) represents the value of the account, in dollars, t years after the inheritance. Which function is
equivalent to A(t)?
A)
A(t) = 10,000(1.012)^20
B)
A(t) = 10,000[(1.012)^t]^20
C)
A(t) = 10,000(1.012)^t (1.012)^20
D)
A(t) = 10,000[(1.012)^t + (1.012)^20]

Answers

Is c because it makes sense to me

Please answer! 15 points!
Which expression is equivalent to –3(–2n + 6) + 3(5 + 6n)?

A.
12n – 3

B.
12n + 21

C.
24n – 3

D.
24n + 21

Answers

Answer:

24n - 3

Step-by-step explanation:

Step 1: Distribute and remove parenthesis

6n -18 + 15 + 18n

Step 2: Collect Like-Terms

24n -3

Match each equation with the number that makes it true. ITEM BANK: Move to Top 18 + s = 3327 = 9 · s40 - s = 235 · m = 35 18 s = 3 m 5 = 10m + 14 = 18 - mm + m + 12 = 22n + 7 = 18n - 9 = 22 11 31 7 50 15 17 3 6 5 2

Answers

I’m not sure maybe someone else can help

Given f(x) = x + 1 and g(x) = 3x – 5,
what are
the restrictions on the domain when f(x)/g(x)

Answers

Answer:

There will be an asymptote at [tex]x=\frac{5}{3}[/tex], meaning the domain is restricted from (-∞, [tex]\frac{5}{3}[/tex])U([tex]\frac{5}{3}[/tex], ∞).

Step-by-step explanation:

When finding domain restrictions for an equation that has a fraction, take the denominator and set it equal to 0. Then, solve for x:

[tex]3x-5=0[/tex]

[tex]3x=5[/tex]

[tex]x=\frac{5}{3}[/tex]

Then we can determine that there's an asymptote at [tex]x=\frac{5}{3}[/tex] but that is the only restriction.

Car Survey In a survey of 2,000 people who owned a certain type of car, 1,400 said they would
buy that type of car again. What percent of the people surveyed were satisfied with the car?

Answers

Answer:

70%

Step-by-step explanation:

1. 1400÷2000 = 0.07

2. move the decimal over 2 spaces for a percentage 0.07 --> 70.0

3. 70.0 = 70%

Lisa has $300 in her bank account. She takes out $25 each week for w After w weeks she has d dollars left in her bank account. Write an equation that represents the amount of money left in her bank account after w weeks

Answers

Answer:

5 weeks 150 dollars

Step-by-step explanation:

The radius of a circle is 5 units what's the diameter of a circle?

Answers

Answer:

10

Step-by-step explanation:

The radius is half of the diameter, so 5 * 2 = 10

Answer:

diameter=2×radius=2×5=10units

7-3y=34
What's y??
Plzzz help due today!!

Answers

Answer:

y = -9 (negative 9)

Step-by-step explanation:

7 - 3(-9) =

7 - (-27) =

34

Hope this helped and pls mark brainliest!

Answer:

y = -9

Explanation:

7 - 3y = 34

Simplify both sides of the equation

7 − 3y = 34

7 + −3y = 34

−3y + 7 = 34

Subtract 7 from both sides

−3y + 7 − 7 = 34 − 7

−3y = 27

Divide both sides by -3

−3y / -3 = 27 / -3

Simplify

y = -9

solve the system of equations. What it the solution?​

Answers

Answer:

c

Step-by-step explanation:

but the answer is (32,87)

EMERGENCY
Triangles ABC and DEF are similar. Find the length of the segments EF and DF

Answers

Answer:

EF = 1.5. DF = 2.

Step-by-step explanation:

DE is half of AB so EF is half of BC and DF is half of AC.

Use Pythagorean Theorem to find a missing leg of a right triangle:



Will give b !

Answers

Answer:

Step-by-step explanation:

h^2=x^2+y^2

26^2=24^2+a^2

a^2=26^2-24^2

a^2=100

a=10

if you solve x-7=9 what is the value of x​

Answers

x=16. add the 7 on both sides. 7+9=16. x=16

Answer:

16

Step-by-step explanation:

9+7=16

Question 5
Write the equivalent expression by combining like terms.
-5x + 2y + 3x

plssss rn 45 POINTS

Answers

Answer:

D

Step-by-step explanation:

We are combining like terms So,

Step 1

-5x + 2y + 3x

Step 2

-5x + 2y + 3x  combine like terms

(-5x+3x)+(2y)  Then you simplify

-2x+2y

So therefore, your answer is D

Which ordered pair (x, y) can be added to the table so that y is still a function of x?

A. (-3, -2)
B. (0, 0)
C. (3, 2)
D. (10, 16)

Answers

Answer:

C

Step-by-step explanation:

Can I get brainleist?

Other Questions
Graph the inequality x-2y>4 How did Truman misuse the bomb even AFTER Japan? Rick buys a remote control car for $25.00 what is his selling price. Markup 19% Waldo McWillerbee: Magician Waldo McWillerbee wanted to be a magician. With a funny name like Waldo McWillerbee, what else could he be besides a magician? A banker? Certainly not a banker! With a name like Waldo McWillerbee, he was meant to entertain the world, and he was determined to do just that with his wondrous, wonderful magic. For his first trick, he would make his mother's prized antique vase float in the air. The vase was simply beautiful! It was over a hundred years old, and it had tiny blue and gold flowers painted all over it. He covered the vase in his magical handkerchief. He took the vase in his handsone hand holding the top, and the other hand supporting the bottom. He chanted, "Scmoozy, Foozy, Kitten Hairy! Make this vase float in the air-y!" He released the vase. BAM! Tiny glass pieces with blue and gold flowers showered the floor. Then Waldo McWillerbee knew he must perform a magician's most important trick of all: make himself disappear! Off Waldo McWillerbee ran to hide under the bed!9Which of these best summarizes the second paragraph?A.Waldo McWillerbee broke his mother's vase because he was trying to be a magician. He went to hide under his bed.B.Waldo McWillerbee chanted, "Scmoozy, Foozy, Kitten Hairy! Make this vase float in the air-y!" He wanted the vase to float.C.Waldo McWillerbee tried to use magic to make his mother's antique vase float in the air. The vase shattered on the floor.D.Waldo McWillerbee's mother had an antique vase with tiny blue and gold flowers painted on it. He covered it with a handkerchief. Brayden stated that a flying disc had a circumference of 43.96 in. Eliza wanted to find the area of the same flying disc. What is the area of the flying disc rounded to the nearest whole number? Both Brayden and Eliza used 3.14 for What is your final (x,y) ordered pair solution to the system of equations? Tyler creates a scatter plot that displays the relationship between the grams of food a hamster eats, x, and the total number of rotations that the hamster's wheel makes, y. Tyler creates a line of best fit and finds that the residual for the point (1.4, 1250) is -132. The point (1.2, 1364) has a residual of 117. interpret the meaning of 117 in the context of the problem residual of 117. Interpret the meaning of 117 in the context of the problem. What is the most likely outcome of an increase in the atmospheric temperature? Not blowing horns on the streets of Kathmandu is a matter of life and death because This table of values represents a linear function.0238614Enter an equation that represents the function defined by this table of values.x The sales tax on a surfboard is $12. What is the percent of sales tax? the surfboard is $240 Write an expression that is equivalent to 3(7 + x).3(7 + x)+?2 What is the solution to the system of equations?Fill in the blanks to explain one way to solve this system of equations using elimination.6x + 2y = 145x 2y = 8First, add the two equations to get 11x = . Then substitute for x in either equation to get y = . A number is greater than 8 The same number of possible solutions to the inequality Pamela prepared 16 kilograms of dough after working 2 hours. How many hours did Pamelawork if she prepared 72 kilograms of dough? Solve using unit rates.hours PLEASE HELP WILL MARK BRAINLIEST!!:The history of conflict in South Africa begins at Its roots with the Dutch. In 4-6 sentences, analyze and explain the impactof centuries of conflict within South Africa on modern society. Use examples to support your ideas. Solve for x 4.12+52=8.23 School Assembly conduction script A 31 kg object is experiencing a net force of 25 N while traveling in a circle of radius 25m. What is its velocity? What building was the center of Florence's religious life during the Renaissance