Answer:
156 games
Step-by-step explanation:
You want to know the total number of games when each of 13 teams plays every other team exactly twice.
GamesEach of the 13 teams will meet 12 others, for a total of 13×12 = 156 meetings.
This total counts the time team 1 meets team 2, and also the time team 2 meets team 1. In other words, this is exactly the game count we're looking for.
156 games will be played.
__
Alternate solution
Team 1 will meet teams 2 through 13, for a total of 12 games. Team 2 has already met team 1, so will need to meet teams 3 through 12 for a total of 11 games. When we count all the games for one meeting between teams, we find the count to be 12 +11 +10 +9 +... +1 = (12)(13)/2 = 78.
If the teams are to meet twice, then 2 times this number of games will be played: 2(78) = 156.
The sum of integers 1 .. n is (n)(n+1)/2.
? : 24 = 21:14 I need help I need to finish this math packet by today
In Euclidean geometry, the interior angles of any triangle add up to 180 degrees. Does this rule apply to triangles in spherical geometry? If not, is there another value that they would always sum to? Explain your answer.
The triangles are subject to this law. If another number were present, their sum would always be greater than 180 degrees.
What is geometry?It is defined as the branch of mathematics that is concerned with the size, shape, and orientation of two-dimensional figures.
It is given that:
In Euclidean geometry, the interior angles of any triangle add up to 180 degrees.
As we know,
Spherical trigonometry, which departs from conventional trigonometry in many ways, is created when angles between great circles are defined.
For instance, the total of the sides and angles of a hemispheric triangle is more than 180 degrees.
In spherical geometry, triangles are subject to this law. If another number were present, their sum would always be greater than 180 degrees.
Thus, the triangles are subject to this law. If another number were present, their sum would always be greater than 180 degrees.
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Marty doesn't have any money saved and he does not want to wait to buy a car . He goes to the dealership and takes out a loan for the $15,000 car . His payments will be $ 500 per month for 3 years (36 months ) . How much will Marty pay for his $ 15,000 car ?
Marty will have to pay $18,000 for his $15,000 car.
While taking out a loan, the amount taken has to be repaid along with an interest. Thus, the amount paid back by the borrower is always greater than the initial amount that the borrower gets from the lender as a loan.
Here, we are given that Marty has to pay $500 per month for 3 years to repay the loan for his $15,000 car.
Thus, for one month he pays = $500
and also we know that 1 year = 12 months
⇒ 3 years = 12(3) = 36 months
Therefore, for 36 months Marty will have to pay,
500 × 36 = 18,000
Thus, Marty will have to pay $18,000 for his $15,000 car.
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Suppose the time it takes me to drive from my apartment to campus on any given day is uniformly distributed between 16 and 20 minutes. What is the mean amount of time it takes me to drive to campus?
Question 4 options:
20 minutes
24 minutes
12 minutes
18 minutes
16 minutes
Given that the between 16 and 20 minutes driving times to the campus is uniformly distributed, the mean driving time is 18 minutes
The correct option is therefore;
18 minutes How can the mean of a uniform distribution be found?The time it takes to drive from the apartment to the campus = Between 16 and 20 minutes
The nature of the distribution of the travel time = Uniform distributionThe mean of a continuous uniform distribution between two boundaries, a and b is given by the formula;
[tex] \mu = \frac{a+b}{2} [/tex]
The mean amount of time it takes to drive to campus is therefore;
[tex] \mu = \mathbf{\frac{16+20}{2}} = 18 [/tex]
The correct mean driving time is the option;
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Can someone pls help me with this i only have a little bit of time left pls hurry
What is 9.06 divided by 9?
Simplify the quantity 10 minus three fourths times the square root of 16 end quantity squared plus the quantity 2 minus 7 end quantity squared.
a. 1,394
b. 1,344
c. 74
d. 24
will give brainliest to whoever answers in the next 15 minutes
Simplifying the quantity 10 minus three fourths times the square root of 16 end quantity squared plus the quantity 2 minus 7 end quantity squared is: c. 74.
ExpressionThe given expression:
(10 - 3/4 × ✓16)² + (2 - 7)²
Hence,
Now let simplify the expression
(10 - 3/4 × ✓16)² + (2 - 7)²
=(10 - 3)² + (-5)²
= 7² + 5²
= 49+ 25
= 74
Therefore simplifying the quantity 10 minus three fourths times the square root of 16 end quantity squared plus the quantity 2 minus 7 end quantity squared is: option c. 74.
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pleaseeee helppppp will give extra points
Give the equation of the line with a slope of - 5/7 and a y intercept of 5
Answer:
[tex]y=-\frac{5}{7}x+5[/tex]
Step-by-step explanation:
The equation of a line can be written in the form of y= mx +c, where m is the slope and c is the y-intercept. This is also known as the slope-intercept form.
Identify the value of the slope, m:
Given that the slope is [tex]-\frac{5}{7}[/tex], m= [tex]-\frac{5}{7}[/tex].
Substituting the value of m into the equation:
[tex]y=-\frac{5}{7} x+c[/tex]
Identify the value of the y-intercept:
Given that the y-intercept is 5, c= 5.
Substitute c= 5:
[tex]\bf{y=-\frac{5}{7}x+5}[/tex]
Thus, the equation of the line is [tex]\bf{y=-\frac{5}{7} x+5}[/tex].
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2) Which of the following is the correct factorization of 7x² - 36x +5?.
a. (7x + 1)(x - 5)
b. (7x-1)(x + 5)
c. (7x - 1)(x - 5)
d. (7x +1)(x + 5)
Ca
C
E
D
2 509
Answer:
c
Step-by-step explanation:
7x²-36x+5= 7x²-x-35x+5
=x(7x-1)-5(7x-1)
=(7x-1)(x-5)
On September 22, 2021, the market value of the investments contained in the Martindale Balanced Fund, a mutual fund, was $39,400,000, Liabilities for the
fund were $3,940,000.
If the fund had 1,380,000 shares outstanding, calculate the net asset value per share. Round your answer to the nearest cent.
Answer:
$25.70 (nearest cent)
Step-by-step explanation:
Given:
Market value = $39,400,000Liabilities = $3,940,000Outstanding shares = 1,380,000[tex]\begin{aligned} \textsf{Net Asset Value}_{\textsf{(Per Share)}} & =\dfrac{\textsf{Fund Assets}-\textsf{Fund Liabilities}}{\textsf{Total number of Outstanding Shares}}\\\\\implies \textsf{Net Asset Value}_{\textsf{(Per Share)}} & = \dfrac{\$39,400,000-\$3,940,000}{\$1,380,000}\\\\& = \dfrac{\$35,460,000}{\$1,380,000}\\\\& = \$25.69565217...\\\\\end{aligned}[/tex]
Therefore, the Net Asset Value (NAV) per share is $25.70 (nearest cent).
The given information is,
→ x = $39,400,000
→ y = $3,940,000
→ z = 1,380,000
Formula we use is,
→ (x - y)/z
Now the net asset value per share is,
→ (x - y)/z
→ (39400000 - 3940000)/1380000
→ 35460000/1380000
→ 25.6956521739
→ ≈ $25.70
Hence, the net asset value is $25.70.
Marie is having trouble finding the answer to a math problem, so she asks her older brother for
help. He gives her a hint that the correct answer is a rational number. Assuming the hint is
accurate, which value is most likely the correct answer?
OA 1.4142135623...
OB. 2.7182818284..
OC 3.1415926535.
OD 4.1818181818...
The number 4.1818181818... is a rational number because the number is terminating. Then the correct option is D.
What is a rational number?If the value of a numerical expression is terminating then they are the rational number then they are called a rational number and if the value of a numerical expression is non-terminating then they are called an irrational number.
Let's check all the options, then we have
A 1.4142135623..., the number is an irrational number because the number is non-terminating.
B. 2.7182818284..., the number is an irrational number because the number is non-terminating.
C 3.1415926535..., the number is an irrational number because the number is non-terminating.
D 4.1818181818..., the number is a rational number because the number is terminating.
The number 4.1818181818... is a rational number because the number is terminating. Then the correct option is D.
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For a rectangle with a perimeter of 20 cm, the width of the rectangle is one-third its length. Use an equation to find the length and width of the rectangle.
Answer:
Step 1. The perimeter P means adding up all four sides of a rectangle.
Step 2. Let w be the width
Step 3. Let 3w be the length since the width is one-third the length
Step 4. Then P=w+w+3w+3w=8w=20 since the perimeter P is 20 cm.
Step 5. Solving the equation in Step 4 leads to the following steps
Divide by 8 to both sides of the equation
8w%2F8=20%2F8
w=5%2F2 and 3w=15/2 and P=2(5/2+15/2)=20 which is a true statement.
Step 6. ANSWER: The width is 5/2 cm.
Step-by-step explanation:
I hope the above steps and explanation were helpful.
A person's systolic blood pressure, which is measured in millimeters of mercury (mm Hg), depends on a person's age, in years. The equation
p=0.007y^2-0.003y+122
gives a person's blood pressure, p,at the age y year
A.) Find the systolic pressure, to the nearest tenth of a millimeter, for a person of age 41 years.
The systolic pressure, to the nearest tenth of a millimeter, for a person of age 41 years is; 133.6 mm Hg
How to solve problems using quadratic equations?We are given the equation that gives a person's blood pressure, p at the age y year is;
p = 0.007y² - 0.003y + 122
To find the systolic pressure for a person of age 41 years, just plug in y = 41 into the given quadratic equation to get;
p(41) = 0.007(41)² - 0.003(41) + 122
p(41) = 11.767 - 0.123 + 122
p(41) = 133.6
Thus, the systolic pressure, to the nearest tenth of a millimeter, for a person of age 41 years is; 133.6
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In a salad recipe, the ratio of carrots to broccoli must remain constant. The table below shows some possible combinations of carrots and broccoli.
Salad Ingredients
Carrots
Broccoli
3
9
4
12
6
18
7
21
If only whole vegetables can be used, what is the fewest number of vegetables that can be used to make this salad?
A.1
B.3
C.4
D.12
Using a proportional relationship, the fewest number of vegetables that can be used to make this salad is:
C. 4
What is a proportional relationship?A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:
y = kx
In which k is the constant of proportionality.
For this problem, looming at the table, we have that the number of Broccoli is triple the number of carrots, hence the proportional function is:
B = 3C.
When there is one carrot, the number of broccoli is given by:
B = 3 x 1 = 3.
Hence the fewest number of vegetables is of 4, as 1 carrot + 3 broccoli = 4 vegetables, hence option C is correct.
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A flight averages 460 miles per hour. The return flight averages 500 mph because of a tailwind. The total flying time is 4 hours and 48 minutes. How long is each flight
The first flight is 2 hours and second flight is 2 hours and 48 minutes
The two distances are the same (out and back),
so set them equal.
That distance is cover by having one is (rate)(time) equal to other is (rate)(time).
Let,
One time is “x” and the other is “4.8-x.”
One average rate is 460 per hour
and the other average rate is 500 per hour.
we know , Speed = [tex]\frac{distance}{time}[/tex]
so , distance = speed × time
put in this formula we get the value of X
⇒460 x = 500 (4.8 -x)
⇒460 x = 2400 - 500x
⇒900 x = 2400
⇒x = 2.5 hours for the slower plane.
⇒4.8- x = 2.3 hours for the faster plane.
The formula speed = distance ÷ time can be rearranged, just like any other equation.
Here detail explanation about relation between speed distance and time :
The formula can be rearranged in three ways:
speed = distance ÷ time
distance = speed × time
time = distance ÷ speed
To calculate one of the variables (speed, distance or time) we need the other two.
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Graph the linear equation.
x - 2y = - 2
The graph of the linear equation can be seen in the image below.
How to graph the linear equation?Here we have the linear equation:
x - 2y = -2
To graph it, we need to find two points that belong to the line, and then we can graph these and connect them with a line.
If x = 0, we have:
0 - 2y = -2
y = -2/-2 = 1
if x = 1 then:
1 - 2y = -2
1 + 2 = 2y
3 = 2y
3/2 = y
Then we have the points (0, 1) and (1, 3/2), now just graph these points on a coordinate axis and then connect them with a line, we will get:
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Solve for x
7/8 of x is 14
Answer:
x =16Step-by-step explanation:
Solve for x
7/8 of x is 14
7/8x = 14
x = 14 : 7/8
x = 14 * 8/7
x =16
----------------
check
7/8 * 16 = 14
14 = 14
the answer is good
Given that sin(3x-35)°-cos(x+20)° and x is an acute angle, find it's value
Value of x for the given data sin(3x-35)°-cos(x+20)°=0, where x is an acute angle is equal to 8.75°.
As given in the question,
Given data :
sin(3x-35)°-cos(x+20)° = 0 __(1)
As we know x is an acute angle ,
cos (90 - α)° =sinα°
⇒ sin (3x -35)° =cos (90 -(3x - 35))°
⇒ sin (3x -35)°=cos (55 -3x )° ___(2)
Substitute the value of sin (3x -35)° from (2) to (1),
cos(55 -3x)° -cos(x+20)°=0
⇒cos(55 -3x)° =cos(x+20)°
⇒55 -3x=x+20
⇒x=8.75°
Therefore, value of x for the given data sin(3x-35)°-cos(x+20)°=0, where x is an acute angle is equal to 8.75°.
The complete question is :
Given that sin(3x-35)°-cos(x+20)° =0 and x is an acute angle, find it's value.
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I need help again please
Answer:
7/10, 12/40, 2/20, -10
The sets J and I are given below.
J=(-2, 3, 4, 5, 6, 8)
I=(-2, 0, 4, 8)
Find the union of J and I. Find the intersection of J and I. Write your answers using set notation (in roster form).
The intersection is the set of all elements in both sets, so the answer is {-2, 4, 8}.
The union is the set of all elements in at least one of the sets, so the answer is {-2, 0, 3, 4, 5, 6, 8}.
all real numbers greater than or equal to 55
The set notation of the numbers is {x | x < 50 ∪ x > 50}
How to determine the set notation of the numbers?The set is given as
The set of all real numbers less than 50 or greater than 50
Let the number be represented by x
So, we have
x less than 50 or x greater than 50
When represented as an inequality, we have
x < 50 or x > 50
Using set notation, we have
{x | x < 50 ∪ x > 50}
Hence, the set notation of the numbers is {x | x < 50 ∪ x > 50}
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the question is in the picture below
Answer: Answer 2, Triangle A is dilated from the origin by a scale of 1/2 to obtain triangle B
Step-by-step explanation:
A nail 6 1/3 inches long is driven into a board 2 2/5 inches thick. How much of the nail
protrudes from the other side of the board?
The nail protrudes 5[tex]\frac{9}{15}[/tex] inches from the other side of the board having a thickness of 2[tex]\frac{2}{5}[/tex] inches
Given that A nail 6 [tex]\frac{1}{3}[/tex] inches long is driven into a board 2 [tex]\frac{2}{5}[/tex] inches thick and asked to find out how much the nail protrudes into the board.
To calculate the nail protrudes, need to subtract the length of the nail and the thickness of the board.
Length of nail protrudes= 6 [tex]\frac{1}{3}[/tex] - 6 [tex]\frac{1}{3}[/tex]
Length of nail protrudes=[tex]\frac{19}{3}[/tex]-[tex]\frac{12}{5}[/tex]
Length of nail protrudes=[tex]\frac{59}{15}[/tex]
Length of nail protrudes= 5[tex]\frac{9}{15}[/tex] .
Therefore,The nail protrudes 5[tex]\frac{9}{15}[/tex] inches from the other side of the board having a thickness of 2[tex]\frac{2}{5}[/tex] inches
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What is an equation of the line that passes through the points (-8, -8) and
(-8, 8)?
Answer:
Linear?
Step-by-step explanation:
its been years since I've seen this so I'm not sure
there is a stack of old algebra books in the library. Each book is 1 1/4 inches thick. let b represent the number of books in a stack and s(b) represent the total height of the stack in inches. what is the equation?
The equation which represents the height of the books is [tex]s(b)=\frac{5}{4} b[/tex]
A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions. An equation between two sums of monomials of degree 0 or 1 is known as a linear equation.
The books are stacked one above the other and each book is [tex]1\frac{1}{4}[/tex] inches thick.
So to calculate the total height of the stack we have to multiply the number of books in the stack with the thickness of each book.
The total thickness is represented in the from of a function as
s(b) and the thickness of each book is [tex]1\frac{1}{4}=\frac{5}{4}[/tex] inches
total height=[tex]\frac{5}{4}\times b[/tex]
Therefore the required equation is [tex]s(b)=\frac{5}{4} b[/tex].
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a bag of apples weighs 5.2 pounds and is on sale for $4.16. What is the price of one pound of apples?
The price of one pound is $0.8.
This problem can be solved by unitary method. To understand this we must know that in this method we need to calculate the value of a unit of product and then multiply that value with the required value for which we have to calculate the value.
Given, that the weight of the apple is 5.2 pounds.
Cost of the apple is = $4.16
Therefore the cost of one pound of apple = [tex]\frac{4.16}{5.2}[/tex]
= $0.8
So, to buy a pound of apple one must pay $0.8.
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Find the x- and y-intercepts of the graph of the equation. (If an
(a)
X^2-xy+4y=49
Answer:
x=±7; y=12.25.
Step-by-step explanation:
1) x-interception:
(y=0): x²=49, ⇒ x=±7;
2) y-interception:
(x=0): 4y=49; ⇒ y=12.25.
Which is bigger, 16\frac{1}{6}
6
1
or 0.16? Explain your reasoning.
Answer:
1/6 is greater than 0.16
Step-by-step explanation:
0.16 as a fraction is 4/25
4/25 < 1/6
it takes 50 people 256 days to build a road how long will it take 80 people
The answer is that 80 people will build the same road in 160 days.
Given that 50 people take 256 days to build a road.
And we need to find out how many days will 80 people take to build the same road.
Disclaimer: Assuming that the work done by all the people are same.
If the number of people increases, the time taken to build the road decreases in the same proportion. Clearly, the number of people varies inversely to the number of days.
Let x denote the number of days required to build the road for 80 people.
Then the ratio, 80/50 = 256/x
⇒ x = (256×50)/80 = 160
Therefore, 80 people will build the same road in 160 days.
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