How many ways can eight letters be arranged into groups of five where order matters and the first two letters are already chosen?
100
120
240
720
Answer:
120
Step-by-step explanation:
There are 120 ways can eight letters be arranged into groups of five where order matters and the first two letters are already chosen.
What is Combination?A combination is a technique to determines the number of possible arrangements in a collection of items where the order of the selection does not matter.
Since, we're dealing with a problem where the order matters and the first two letters are already chosen we need to subtract the number of letters and the number of available slots per group.
Here, We use the permutation formula to find the answer, but before that let's check values.
n = 8
k = 5
Now since there are two letters already chosen we have to deduct two from both the value of n and k.
n = 6
k = 3
Hence, we can use the permutation formula:
P (n, k) = n! / (n - k)!
P (6, 3) = 6! / (6 - 3)!
P (6, 3) = 120
Thus, There are 120 ways can eight letters be arranged into groups of five where order matters and the first two letters are already chosen
Learn more about the combination visit:
brainly.com/question/28065038
#SPJ5
Use the formula to find the midpoint between a segment with endpoints
(0,5) and (-4, 6). *
Answer:
Step-by-step explanation:
(x₁ ,y₁) = (0 , 5) & (x₂, y₂) = (-4 , 6)
[tex]Midpoint = (\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2})\\\\[/tex]
[tex]= (\frac{0 - 4}{2} , \frac{5+6}{2}) \\\\= (\frac{-4}{2} , \frac{11}{2})\\\\=(-2 , 5.5)[/tex]
The mid-point is the average of the respective values for x and y.
So, the formula for the mid-point would be: [tex](\frac{x_{2} + x_{1}}{2}, \frac{y_{2} + y_{1}}{2})[/tex]
So for your problem this would be:[tex](\frac{-4}{2}, \frac{11}{2})[/tex]
So the final answer would be: [tex](-2, 5.5)[/tex]
HELP ME PLEASE!!!! explain how to solve y^4-81/y-3
Answer:
If solved by using quadratic formula, you would need to solve the rational equation by combining expressions and isolating the variable y .
y ≈ 2.45043159
Step-by-step explanation:
The expression (y⁴ - 81) / (y - 3) simplifies to (y + 3)(y² + 9) after factoring and canceling common terms.
expression (y⁴ - 81) / (y - 3)
by simplification
factoring the numerator
y⁴ - 81 = (y²)² - 9² = (y² - 9)(y² + 9)
factoring the denominator
y - 3
we get, (y² - 9)(y² + 9) / (y - 3)
simplifying
(y² - 9) = (y - 3)(y + 3)
(y - 3)(y + 3)(y² + 9) / (y - 3)
(y + 3)(y² + 9)
learn more about numerator here
brainly.com/question/7067665
#SPJ2
Your family buys tickets for the Ranger game. Each ticket costs $16. You also have to pay for parking. After buying 4 tickets, your total bill is $96.50.
a) How much did you pay for parking?
b) Write an equation that gives your total bill (in dollars) as a function of the number of tickets you buy. Be sure to define your variables!
c) How many tickets could you buy with $250 if you also have to pay for parking?
Part (a)
Answer: $32.50
--------------------
Work Shown:
Each ticket costs $16. If you buy four of them, then you paid 4*16 = 64 dollars.
The total bill was $96.50
This leaves 96.50-64 = 32.50 for parking.
======================================================
Part (b)
Answer: y = 16x+32.50
--------------------
Work Shown:
x = number of tickets
y = total bill (in dollars)
1 ticket costs 16 dollars
x tickets cost 16x dollars since we multiply both values by x
Add on the cost of parking to get a total bill of y = 16x+32.50
======================================================
Part (c)
Answer: at most 13 tickets
In other words, 13 is the max you can get.
--------------------
Work Shown:
Plug y = 250 into the equation found back in part (b). Solve for x
We'll follow PEMDAS in reverse to isolate x
y = 16x+32.50
250 = 16x+32.50
16x+32.50 = 250
16x = 250-32.50
16x = 217.5
x = 217.5/16
x = 13.59375
Since we can't buy a fraction of a ticket, we must round down to the nearest whole number. We cannot round to x = 14 despite the value 13.59375 being closer to 14 as it is to 13.
x = 13 is the answer we're after.
If we plug in x = 13, we get
y = 16x+32.50 = 16*13+32.50 = 240.5
while x = 14 leads to
y = 16x+32.50 = 16*14+32.50 = 256.5
The first result of $240.50 is under $250 while the second result $256.50 is over $250. So that's why x = 13 is the largest number of tickets we can buy.
a) The parking fee is $32.50.
b) The equation is T(N) = 16N + Parking fee
c) Approximately 13 or 14 tickets.
We have,
a)
Total bill - Cost of tickets = Parking fee
$96.50 - ($16 * 4) = Parking fee
$96.50 - $64 = Parking fee
Parking fee = $32.50
b)
Total bill = T
Number of tickets = N
The equation that gives your total bill (in dollars) as a function of the number of tickets you buy is:
T(N) = 16N + Parking fee
c)
T(N) = 16N + Parking fee
Substituting the given values:
$250 = 16N + Parking fee
$250 = 16N + $32.50
$250 - $32.50 = 16N
$217.5/16 = N
N ≈ $13.6
Thus,
a) $32.50
b) T(N) = 16N + Parking fee
c) Approximately 13 or 14 tickets.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ6
A plane flies 35 km in the direction N 30° W, then flies 60 km in the direction N 60° E. How far is the plane from its original location?
Answer:
69.46 km
Step-by-step explanation:
Just did on Edge 2020
The distance of the plane from its original location is 69.46 km
What is Pythagoras theorem?The Pythagoras theorem states that if a triangle is right-angled, then the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Formula of Pythagoras theorem
Hypotenuse² = Perpendicular² + Base²
According to the question
A plane flies 35 km in the direction N 30° W,
and then flies 60 km in the direction N 60° E
i.e
When we plot its figure
we will observe it will form a right angled triangle
with perpendicular = 35 km , Base = 60 km
and Hypotenuse = distance form original location to current location
Now,
By using the formula of Pythagoras theorem
Hypotenuse² = Perpendicular² + Base²
Hypotenuse² = 35² + 60²
Hypotenuse² = 4825
Hypotenuse = 69.46 km
Hence, the distance of the plane from its original location is 69.46 km.
To know more about Pythagoras theorem here:
https://brainly.com/question/343682
#SPJ2
Select the recursive rule for a sequence where every term is the same.
(А)
f(1) = 11, f(n) = f(n - 1)-2
B
f(1)= 11, f(n)=f(n − 1) + 1
C с
f(1) = 11, f(n)=f(n - 1)-1
D
f(1)= 11, f(n) = f(n − 1)
Answer:
f(1)=11,f(n)=f(n-1)+1
a person has 80 followers on social media. The number of followers tripled each year. How many followers will she have after 4 years. Explain your answer
I was wrong sorry:(
the second one is correct
Answer:
6,480 followers
Step-by-step explanation:
1 year = 80(3) = 240
2 years = 240(3) = 720
3 years = 720(3) = 2,160
4 years = 2,160(3) = 6,480
pls help:( this is due by the end of the day!! 16 points!
Answer:
P=90
q=122
Step-by-step explanation:
Give reasons for why it is isosceles
Answer:
because two angles are equal
PLEASE HELP This is solving Exponential and Logarithmic Equations I got the other ones, but I don’t even know what this says to be honest please help.
Answer:
Step-by-step explanation:
We have
[tex]e^\frac{x}{2}^l^n^3 = 5\\[/tex]
[tex]ln(e^\frac{x}{2}^l^n^3) = ln(5)\\\frac{x}{2}ln(3) = ln(5)\\\frac{x}{2} = \frac{ln(5)}{ln(3)} \\x = \frac{2ln(5)}{ln(3)}[/tex]
[tex]x = 2.929947041[/tex]
to the third decimal is 2.930 (i might be wrong on the rounding part)
la razón entre dos triángulos es 4. Los lados del primer triángulo miden 6cm, 9cm, 12cm, ¿Cuáles son las
medidas del segundo triángulo?
Answer:
24cm, 36cm y 48cm
Step-by-step explanation:
Tu necesitas multiplicar cada lado por 4 porque 4 es el factor de escala.
(Lo siento si mi explicacion es mala, no se mucho Español, entonces no puedo explicar muy bien)
Which scatterplot has a correlation coefficient closest to r = –1?
A coefficient of r = -1 is a negative so the dots would move downward as they move to the right ( higher dots are on the left side, lower dots on the right side. As the coefficient gets closer to -1 the dots form more of a straight line then being scattered across the graph.
The last graph, which is marked with the blue dot is the correct one.
The last scatterplot (option D) has a correlation coefficient closest to r = -1.
What is correlation coefficient?The correlation coefficient describes how one variable moves in relation to another.A positive correlation coefficient indicates that the two move in the same direction.A negative correlation coefficient tells you that they instead move in opposite directions.A correlation coefficient of zero suggests no correlation at all.For given situation,
When the y variable tends to decrease as the x variable increases, we say there is a negative correlation between the variables.
i.e., it must have negative correlation coefficient.
If we observe the last scatterplot i.e., option (D), then it must have negative correlation coefficient.
Therefore, the correct answer is option (D)
Learn more about a correlation coefficient here:
https://brainly.com/question/14298919
#SPJ2
(−12)⋅(−12)⋅(−12)
lkndslnfkdsbdf
Answer:
-1728
Step-by-step explanation:
First, you multiply -12 and -12 which is 144
After that multiply 144 by -12 which is -1728
Answer: -1728
Hope this helps!
Answer:
-1728
Step-by-step explanation:
Simplify
2(x+7) 2x + 20
- 2 =
x+4
2x + 8
Answer:
x = -20
Step-by-step explanation:
2(x+7) 2x + 20 - 2 = x+4 2x + 8
2x+14 + 2x + 20 - 2 = x + 4 + 2x + 8
4x +32 = 3x + 12
x = -20
What is the absolute value of 2.8?
Answer:
2.8
Step-by-step explanation:
It is the same
Lines AB and CD are straight lines. Find x and y. Give reasons to justify your solutions.
PLEASE HELP. WORTH 25 POINTS. PICTURE BELOW
Answer:
y = 5
x = 14
Step-by-step explanation:
AOC=25
AOL=90
Therefore COL = 65
COM is a 90 degree angle since MOD is 90 degrees
COM - COL = 90 - 65 = 25
5y = 25
y=5
LOB = 90
5y + 3x + 23 = 90
5(5) + 3x +23 = 90
25 + 3x + 23 = 90
48 + 3x = 90
3x= 90 - 48
3x = 42
x= 14
Answer:
x = 14, y = 5
Step-by-step explanation:
MOB = LOC
(3x + 23) + 25 = 90
3x + 23 = 65
3x = 42
x = 14
3(14)+23 + 5y = 90°
5y = 25
y = 5
Can anyone calculate the rise/run for this?
Answer:
0
Step-by-step explanation:
The slope of any horizontal line will be zero.
Answer:
slope = m = rise/run = 0/8 = 0
Step-by-step explanation:
Well rise/run is how much it rises over how much it runs.
Note it rises by 0 so 0 on top,
Therefore;
no matter it be 0/1 or 0/1241213261238126836128361 the rise/run also known as slope is always gonna be 0
Reasoning:
0 divided by anything is always 0
Hope this helps
Write the following using algebraic notation, using the letter x for any
unknown numbers:
I think of a number, add one, then double the result.
9514 1404 393
Answer:
2(x+1)
Step-by-step explanation:
x . . . I think of a number
x +1 . . . add 1
2(x +1) . . . double the result
Dan earns £400 over the course of a five-day week. How much is that per day?
Answer:
£80
Step-by-step explanation:
If there are 5 days in a work week, and he earns £400 for the whole week, you would divide £400 by 5. You get 80, so Dan earns £80 each day.
Answer:
£80
Step-by-step explanation:
divide £400 by 5
400/5 = 80
Help please in 14,15,16,17,18,19,20,21
I need help! Pls can someone help ASAP!
Answer:
3 times more
Explanation:
3/4 is 3 times larger than 1/4 of the water bottle filled
I’m confused on this question. Can anybody help?
Answer:
I believe the answer is 90
Step-by-step explanation:
Answer:
90 degrees
Step-by-step explanation:
Calculate whether an angle is 90 degrees using the Pythagorean Theorem. This well-known theorem is often phrased as "A squared plus B squared equals C squared," which indicates that the sum of the squares of lengths of the adjacent sides of a right triangle is equal to the square of the length of the hypotenuse side.
i need the solution to 5x+2y=7 and 7x+6y=-3
Answer:
1. x=7/5-2y/5
2. x = − 8 √ 3 ( − 1 − 2 y )
Step-by-step explanation:
i did it
Solve for x in the triangle. You must show your starting equation and all work. Then calculate the value of each angle in the triangle.
Answer: x = 59
Step-by-step explanation:
Emilio drew a line that is modeled by the equation y-4=3(x-2) what is the slope of the line?
Find the values of x and y.
X= __
Y= __
Answer:
x = 20
y = 100
Step-by-step explanation:
To figure out x do this.
3x + 2x = 7x - 40 (collect like terms)
5x = 7x -40 (subtract 7x on both sides)
-2x = -40 (divide by -2 on both sides)
x = 20
Plug in to get y
Since 7x - 40 and y are vertical they equal the same amount
7(20) - 40 = y (multiply 7 by 20)
140 - 40 = y (collect like terms)
100 = y
Hope this helps ya! Keep smiling!
what is the slope of the graph?
Answer:-6
Step-by-step explanation:
diving simply the following: 3 power 12÷3 power 7
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex] {3}^{12} \div {3}^{7} = [/tex]
[tex] {3}^{12} \times {3}^{ - 7} = [/tex]
[tex] {3}^{12 - 7} = {3}^{5} [/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Answer:
I think the answer is 243.
Step-by-step explanation:
hope that helps
What is 3/4 + 4/5 + 5/6
The Answer is...
143 over 60
(Decimal: 2.38333)
The price of a smart watch is $109.99 and the sales tax is 6.5%. What is the total cost of the smart watch? Enter your answer in the box.
Answer:
$117.14
Step-by-step explanation:
A "sales tax" refers to a specific amount of money (according to its percentage) that you need to pay other than the price of the good stated.
So, if the price of the smart watch is $109.99 and the sales tax is 6.5%, you have to know much is 6.5% of $109.99. This can be computed by using the multiplication operation.
109.99 x 6.5% (0.065) = $7.15 (this is the sales tax)
In order to know the total cost of the smart watch, you have to add the sales tax to the price of the smart watch.
$109.99 + $7.15 = $117.14
The total cost of the smart watch is $117.14
Answer:
$117.14
Step-by-step explanation:
I toke the quiz and a k12 student.