Justin and Tim have played the same game a total of 10 times.
There are 10 players in Crestwood Elementary's four-square league, including Justin and Tim. Over the course of a semester, each possible match-up of five players occurs once. This means that Justin and Tim have played the same game a total of 10 times.
To calculate this, we need to consider the different combinations of players that can make up a five-person game. There are a total of 10! (10 factorial) permutations of the 10 players, meaning that each possible game is made up of different players.
This includes the combination of Justin and Tim, which occurs 10 times. Therefore, Justin and Tim have played the same game 10 times during the semester.
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How much more than 23 is 9 * 9?
58 is the number which would be much more than 23 is 9*9.
Here,
It is asked that how much more we need to add in 23 to get the value 9*9.
Here, 9*9 means we simply have to multiply 9 with 9 and we will get 81.
so, we know that
9*9 = 81
Now, we have to find how much we need to substract in 81 to get the value as 23
81-23 =58
when we deduct 23 from 81 then we get 58.
hence, 58 is the answer.
In this situation we just replace the much more word with subtraction to get the answer.
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A boat traveled on a river 10 km upstream and then comes back to its starting point. Given that the trip takes 2 hours and the river has a current of 4 km an hour, write a quadratic equation that gives the boat's speed for the trip.
Responses
A 2x2 − 20x − 32 =0
B 2x2 − 8x − 32 =0
C 2x2 − 8x − 16 =0
D 2x2 − 16x − 32 =0
Answer:
2x² - 20x - 32 = 0
Step-by-step explanation:
Trip upstream:
distance = 10 km
time = t
current = 4 km/h
speed of boat in still water = x
speed upstream: x - 4
speed = distance/time
distance = speed × time
10 = (x - 4) × t
10 = tx - 4t
t(x - 4) = 10
t = 10/(x - 4)
Trip downstream:
Distance = 10 km
time = 2 - t
current = 4 km/h
speed downstream = x + 4
speed = distance/time
distance = speed × time
10 = (x + 4) × (2 - t)
10 = 2x - tx + 8 - 4t
10 = 2x - 10x/(x - 4) + 8 - 40/(x - 4)
10(x - 4) = 2x(x - 4) - 10x + 8(x - 4) - 40
10x - 40 = 2x² - 8x - 10x + 8x - 32 - 40
2x² - 20x - 32 = 0
Use proportional reasoning skills to figure out the unit rate of bananas if it costs $1.50 for 2/3 pound of bananas.
The unit rate of bananas is $2.25 per pound.
What is the meaning of unit rate?
Unit Rate = Ratio between two separate quantities with different units. = a:b. = a/b. This formula can be used to determine the rate of any two given quantities, such as a and b.
Given that the cost of 2/3 pound of bananas is $1.50.
If the number of pound of bananas increase then the cost of bananas will be increase.
So the relation between amount of banana is directly proportion with the cost.
Therefore,
Amount of bananas/ cost of bananas = Amount of bananas/ cost of bananas
(2/3)/1.50 = 1/x
2/4.50 = 1/x
x = 4.50/2
x = 2.25
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72 minutes for 27 songs = 8 minutes for how many songs
Answer:
8 minutes = 3 songs
Step-by-step explanation:
Time taken for 1 song is,
→ 72/27
→ 2.6667
→ ≈ 2.7 minutes
Then songs played in 8 minutes,
→ Total time ÷ Time for 1 song
→ 8 ÷ 2.7
→ 2.96296
→ ≈ 3 songs
Hence, the answer is 3 songs.
What are the example of exponential equation?
Exponential equation has tow major types
exponential decay
f(x) = a(1.16)^xexponential growth
f(x) = a(0.84)^xWhat are exponential equation?Exponent-based equations in which the exponent or a portion of the exponent is a variable are known as exponential equations.
This is a type of function that are of 3 main parts
the starting or initial value
base function
the exponents
Atypical example includes: f(x) = 300(1.16)^x
the starting = 300
the base = 1.16
the exponents = x
A mathematical function called an exponential function is employed frequently in everyday life. It is mostly used to compute investments, model populations, determine exponential decay or exponential growth, and so forth.
The base is what determines exponential growth or decay
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90pts!! please help meh iwill mark brainliest!! please have a good day/night :)
What is the product of 1.2y and 3y?
4.2y
3.6y
3.6y2
4.2y2
Answer: 3.6y^2
Step-by-step explanation:
To calculate this, you simply multiply the two numbers together: 1.2y * 3y = 3.6y^2.
Answer:
[tex] \sf \: c) \: 3.6 {y}^{2} [/tex]
Step-by-step explanation:
Now we have to,
→ find the product of 1.2y and 3y.
Forming the problem,
→ 1.2y × 3y
Then the product will be,
→ 1.2y × 3y
→ (1.2 × 3)(y × y)
→ (1.2 × 3)y²
→ (3.6)y²
→ 3.6y²
Hence, the answer is 3.6y².
The volume of a box, a rectangular prism, is represented by the function f(x) = x3 5x2 – 8x – 12. the length of the box is (x 6), and the width is (x – 2). find the expression representing the height of the box. x – 1 x – 5 x 1 x – 12
The expression representing the height of the box is the difference between the length and width of the box, which is equal to x subtracting two, or x – 1.
The expression representing the height of the box can be determined by subtracting the width of the box from the length. The length of the box is x 6, and the width is x – 2. To calculate the height, we subtract the width from the length: x – (x – 2) = x – x + 2 = 2. Therefore, the expression representing the height of the box is x – 1. This indicates that the height of the box is equal to the length of the box minus one. This calculation can be applied to any rectangular prism to calculate the height.The volume of the box is represented by the function f(x) = x3 5x2 – 8x – 12. To calculate the volume, we can substitute the length and width into the function:
f(x) = (x – 6)(x – 2)(x – 1) = x3 – 8x2 + 11x – 12.
Therefore, the volume of the box is x3 – 8x2 + 11x – 12.
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What are the 4 steps in constructing a line segment?
Line Segment has 2 end points.
How to construct a line segment?Building a line segment of a specified length involves the following stages.
First, draw a line.
Step 2: Pick any point on the line where point A is.
Step 3: Keep one end of the compass on the 0 cm mark at the specified length of the rule to extend it.
Step 4: Draw an arc on the line while maintaining the compass' pointed end on point A.
Make B the arc point.
In this way we can construct any line segment of given length using compass and scale.
Line Segment has 2 end points.
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What transformation can verify congruence?
It isometric to rotate, reflect, and translate. This indicates that the character size is unaffected by these modifications. If a form's size and shape have not altered, it is congruent.
What is congruence?
A "matching" figure is one that can be placed perfectly on another. The bread has the same size and form when it is stacked. Match refers to objects that are precisely the same size and form. If one of two geometric figures can be consistently overlaid on the other, they are said to be congruent or to be in a congruent relationship.
If 3 sides are equal
then By SSS, its congruent
AB = DE = 12
BC = EF = 11
AC= DF = 10
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Why does the square root of 16 have two answers?
When we multiply 4 with 4 we get 16 again
when we multiply (-4) with (-4) we get 16. so 16 has 2 square root.
What are Square and Square root ?There are always two solutions to the square root of a number: a positive response and a negative answer. Because the square of a negative and positive integer is the same, there are two possible solutions.
Squares are the numbers that are produced when a value is multiplied by itself. In contrast, a number's square root is a value that, when multiplied by itself, returns the original value.
The values that result from multiplying an integer by itself are known as square numbers. Among the attributes are:
The square of one is one.Positive squares have positive characteristics.The square of a negative integer has a positive aspect as well.Square of 0 equals 0The value under the root is equal to a number's square root.Only even numbers will be present in every even number's unit location of square.A number's square ends in 1 if either 1 or 9 were substituted for the unit.If a number has a 4 or 6 in the place of the unit, then the square it forms ends in 6.When we multiply 4 with 4 we get 16 again
when we multiply (-4) with (-4) we get 16. so 16 has 2 square root.
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How can I solve from problems A-F
Answer:
B. 1 & 1
C. 5 & 3
D. 2 & 2
E. 4 & 0
Something interesting about these was me having to just use simple and smaller numbers to complete the equations.
Answer:
answers is in attached picture.
Step-by-step explanation:
heart and star pls <3 brainliest will be appreciated <3(っ◔◡◔)っ -{ elyna s }-Exercice 1
Sarah, who is twenty years old, runs regularly. During her workouts, she monitors her heart rate.It thus determined its maximum recommended heart rate and obtained 193 beats per minute. When she is forty years old, her maximum heart rate will be 178 beats per minute.Is it true that over this twenty-year period his maximum heart rate will have decreased by about 8%?
It is true that Sarah's maximum heart rate over this twenty-year period will have decreased by approximately 8%.
How is the percentage decrease computed?The percentage decrease is determined by ascertaining the reduction or difference in heart rate at the beginning and at forty.
This difference becomes the numerator of the division operation by the heart rate at the beginning and then multiplied by 100.
Sarah's heart rate at twenty years = 193 beats per minute
Sarah's heart rate at forty years = 178 beats per minute
Difference (Decrease) in heart rate = 15 beats per minute (193 - 178)
Percentage decrease = 7.77% (15/193 x 100)
= 8%
Thus, we can conclude that Sarah's heart rate has decreased by about 8%.
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How do you know if a curve is positive or negative?
Positive curve graphs will be upward-sloping.
Negative curve graphs will be downward-sloping.
Both graphs in the first image attached below, show curves sloping upward from left to right. As with upward-sloping straight lines, we can say that generally the slope of the curve is positive. While the slope will differ at each point on the curve, it will always be positive.
In the graphs in the second image attached, both of the curves are downward sloping. Straight lines that are downward sloping have negative slopes; curves that are downward sloping also have negative slopes. The slopes change from point to point on a curve, but all of the slopes along these two curves will be negative.
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Straight lines that are downward sloping have negative slopes; curves that are downward sloping also have negative slopes. The slopes change from point to point on a curve, but all of the slopes along these two curves will be negative.
HELP I NEED HELP. ASAP. PLEASE!!!!!!!!!
In the last three years, Frederico's basketball team won 50 more games than they lost. If they won 130 games, what was the ratio of wins to losses? Write the ratio in all three forms.
Please! :(
The ratios of win to lose are 13 : 8, 13/8 and 1.625%
How to determine the ratio of win to lose?From the question, we have the following parameters that can be used in our computation:
Win = 50 more than lose
Win = 130
This means that
Win = 50 + Lose
So, we have
50 + Lose = 130
Evaluate
Lose = 80
The ratio is then represented as
Ratio = win to lose
This gives
Ratio = 130 : 80
So, we have
Ratio = 13 : 8
Express as fraction
Ratio = 13/8
Lastly, we have
Ratio = 1.625%
Hence, the ratio is 1.625%
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Is y² X² 16 a function?
Since in [tex]y^{2} x^{2} 16[/tex] , there is no "=" sign in the given expression so we can conclude that given expression is not a function.
What is a function?A function in mathematics from a set X to a set Y allocates precisely one element of Y to each element of X. The sets X and Y are collectively referred to as the function's domain and codomain, respectively.
What are mathematical expression?An expression, often known as a mathematical expression, is a finite collection of symbols that are well-formed in accordance with context-dependent principles. An expression in mathematics is made up of numbers, variables, and functions (such as addition, subtraction, multiplication or division etc.) You may think of expressions as being comparable to phrases.
Expression=[tex]y^{2} x^{2} 16[/tex]
Since there was not "=" sign in the given expression so output can't be achieved for any given inputs so we can conclude that the given expression is not a function.
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How do you solve x squared minus 16?
All the options that result in (x + 4 ) (x 4 ) = 0 being true are the ultimate answer and x = − 4 , 4.
What is algebra?The broad field of mathematics includes algebra. Algebra is the study of mathematical symbols and the rules for using them in formulas; it is a common thread that runs through practically all of mathematics.Since many applications of mathematics include the manipulation of variables, which are frequently represented by Roman letters, elementary algebra is a prerequisite. For the most part in education, the study of algebraic structures like groups, rings, and fields is referred to as abstract algebra (the term is no more in common use outside educational context). Modern presentations of geometry are done using linear algebra, which deals with linear equations and linear translations. It also has a lot of practical uses (in weather forecasting, for example).Here, x²-16=0
rewrite 16 as 4²
then, (x+4)(x-4)
Any factor on the left side of the equation that is equal to 0 will make the entire expression equal to 0.
x+4=0 and find x
Then x=-4
x-4=0 and find x
x=4.
Hence, All the options that result in (x + 4 ) (x 4 ) = 0 being true are the ultimate answer and x = − 4 , 4.
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the equation for line w is y=3x-4.line d contains the point (2,-1) and is parallel to line with.write an equation that describes line d?
Please answer asap.thank you
Considering the definition of parallel line, the equation of the line d is y= 3x -7.
Linear equationA linear equation o line can be expressed in the form y = mx + b
where
x and y are coordinates of a point.m is the slope.b is the ordinate to the origin and represents the coordinate of the point where the line crosses the y axis.Parallel lineParallel lines are two lines that prolonged towards infinity never touch.
Two lines are parallel if they have the same slope and different y-intercepts.
Equation of parallel line in this caseIn this case, the line is y=3x-4
where:
The slope m is 3.The y-intercept is -4.Since two lines are parallel if they have the same slope, the parallel line has a slope of 3.
The line passes through the point (2, -1). Replacing in the expression for a line:
-1= 3× 2 + b
-1= 6 + b
-1 -6= b
- 7= b
Finally, the equation of parallel line is y= 3x -7.
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What are the properties of equilateral triangles?
Properties of equilateral triangles are:
All three sides of an equilateral triangles are equal and let be a units.All three angles are equal to 60 degreesEquilateral triangles is a regular polygon of 3 side.Equilateral triangles have the same point as its ortho-centre as well as its centroid . The median, angle bisector, and altitude of an equilateral triangle are all equal and the same straight line.An equilateral triangle's area is = [tex]\frac{\sqrt{3} }{4} *a^2[/tex].perimeter of an equilateral triangle is 3a.The length of perpendicular form a vertex to the side opposite to that vetex measure[tex]\frac{\sqrt{3} }{2} *a[/tex].To know more about equilateral triangles click on below link:
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What is the formula in solving rectangular prism?
The formula used to calculate the solving the volume of the rectangular prism is equal to ( length × width × height ).
As given in the question,
Given base of the prism is rectangular in shape ,
Area of the base with rectangular base is given by :
area of the rectangle = length × width
Volume of the rectangular prism = base area × height
⇒Volume of the rectangular prism = ( length × width ) × height
Therefore, the formula required to calculate the volume of the rectangular prism is given by ( length × width × height ).
The above question is incomplete , the complete question is:
What is the formula in solving volume of the rectangular prism?
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if there is $0.85 for 8 oz, how much would 1 oz cost?
The cost of 1 oz is $0.10625
How to determine the cost of 1 oz?From the question, we have the following parameters that can be used in our computation:
If there is $0.85 for 8 oz
This means that
The cost of 8 oz = $0.85
Assume there exist a proportional relationship between the cost and the size i.e. oz
The cost of 1 oz can be calculated using the following equation
The cost of 1 oz = $0.85/8
Evaluate the quotient
The cost of 1 oz = $0.10625
Hence, the cost of 1 oz is $0.10625
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Find the solution of the system of equations.
-5x - 5у = -30
10x+3y = -3
What is the nature of roots of the quadratic equation x2 2 √ 3x 3 0?
The roots of the quadratic equation x² + 2√3 x + 3 = 0 have only one root and it is -√3
What is Quadratic Equation?
A quadratic equation is a second-order polynomial equation in a single variable x , ax² + bx + c=0. with a ≠ 0. Because it is a second-order polynomial equation, the fundamental theorem of algebra guarantees that it has at least one solution. The solution may be real or complex.
The roots of the quadratic equations are
x = [ -b ± √ ( b² - 4ac ) ] / ( 2a )
where ( b² - 4ac ) is the discriminant
when ( b² - 4ac ) is positive, we get two real solutions
when discriminant is zero we get just one real solution (both answers are the same)
when discriminant is negative we get a pair of complex solutions
Given data ,
Let the quadratic equation be represented as A
Now , the value of A is
x² + 2√3 x + 3 = 0 be equation (1)
On factorizing the equation , we get
The roots of the quadratic equations are calculated by
x = [ -b ± √ ( b² - 4ac ) ] / ( 2a )
Substituting the values in the equation , we get
x = [ -2√3 ± √ ( ( 2√3 )² - 4 ( 3 ) ) ] / 2
On simplifying the equation , we get
x = [ -2√3 ± √ ( 12 - 12 ) ] / 2
The discriminant is zero we get just one real solution
So ,
x = [ -2√3 ± √0 ] / 2
x = ( -2√3 ) / 2
x = -√3
Therefore , the value of x is -√3
Hence , the root of the quadratic equation is -√3
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What is the slope-intercept form of a line that passes through points (2, 11) and (4, 17)?y = negative 3 x minus 5y = 3 x minus 5y = negative 3 x + 5y = 3 x + 5.
Answer:
y = 3x + 5
Step-by-step explanation:
The slope-intercept form of a line is [tex]y = mx + b[/tex], where m is the slope, and b is the y-intercept.
To solve for m (the slope), use the formula: [tex]m = \frac{y__{2} - y__{1}}{x__{2} - x__{1}}[/tex], where [tex](x_{1} , y_{1} )[/tex] and [tex](x_{2}, y_{2})[/tex] are the points you are given.
. . . . . . . . m = (17 - 11) / (4-2)
. . . . . . . . m = 6/2
. . . . . . . ∴ m = 3
Substitute the slope, m, into the slope-intercept equation.
y = 3x + b
Now we have to solve for b, the y-intercept. To do so, substitute a point that was given to you into the equation.
I chose the point (4,17), but you can also do (2,11).
. . . . . . . . 17 = 3(4) + b
. . . . . . . . . . remember that the x-variable is being multiplied to the m
. . . . . . . . -12 + 17 = 12 + b - 12
. . . . . . . . ∴ 5 = b
Substitute the y-intercept, b, into the slope-intercept equation, and you're done!
[tex]y = 3x + 5[/tex]
How many solutions does a pair of equations y =- 3 and y 0 has?
The pair of equations y = -3 and y = 0 have No Solution .
The pair of equations is given as y = 0 and y = -3 .
In order to find number of solutions of the equations ,
we use the graphical method ,
the graph of the equation y = 0 is x axis .
and the graph of the equation y = -3 is a straight line that is parallel to the x axis , as shown in the figure below .
From the graph drawn below , we can see that the two lines are parallel and
We know that , when two lines are parallel they have No Solution .
Therefore , given pair equations have No Solution .
The given question is incomplete , the complete question is
How many solutions does a pair of equations y = -3 and y = 0 has ?
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What does 4 more than a number mean?
'4 more than a number' implies that there exists a number which is 4 units greater than the original number, using the concept of addition.
Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division.The addition of two whole numbers results in the total amount or sum of those values combined. The example in the adjacent image shows a combination of three apples and two apples, making a total of five apples. This observation is equivalent to the mathematical expression "3 + 2 = 5" (that is, "3 plus 2 is equal to 5").
Besides counting items, addition can also be defined and executed without referring to concrete objects, using abstractions called numbers instead, such as integers, real numbers and complex numbers. Addition belongs to arithmetic, a branch of mathematics. In algebra, another area of mathematics, addition can also be performed on abstract objects such as vectors, matrices, subspaces and subgroups.
Now, let us understand the meaning.
Let the original number be x.
'4 more than a number' implies x + 4.
This means that the new number, x + 4, is greater than the original number, x, by 4 units. We also have to keep in mind, [tex]x + 4 > x[/tex].
Hence, the final meaning is 4 units greater than the original number.
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Which of the following is equivalent to −2(5p − 2q)?
−10p + 4q
−10p − 2q
−7p + 4q
−7p − 4q
−10p + 4q is equivalent to −2(5p − 2q).
What is meant by equivalent expression?Expressions that are equivalent do the same thing even when they have distinct appearances. When we enter the same value(s) for the variable, two algebraic expressions that are equivalent have the same value (s).Using the equality (=) symbol, equivalent phrases are represented. Because both expressions have the same value for any value of x, 3(x + 2) and 3x + 6 are identical expressions. 3x + 6 = 3 × 4 + 6 = 18.When two expressions can be expressed similarly or when they can be combined into a single, simpler expression, they are said to be comparable. Furthermore, if values are replaced for the variable in two expressions and they both provide the same result, you can tell if the expressions are similar.Given data :
−2(5p − 2q)
= -2 x 5p -(-2p) x 2q)
= = 10p + 4q
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Simplify completely. …..
By simplifying [tex]\sqrt{75a^{8}b^{5} }[/tex], we get 5[tex]a^{4} b^{2}[/tex][tex]\sqrt{3b}[/tex].
What is square root?
A number can be obtained by multiplying the square root of that integer by itself. The word "square root" is represented by the symbol "sqrt"—square root of, end square root. The opposite of squaring an integer is finding its square root.
How to find square root?
Factoring by squares: Find the factorsSeparate the factors into their own square rootsSolve for the individual squaresFinish solving the equationLong-form factoring:Find the factorsPull duplicate factors outSolve the remaining equationLong division method:Separate your square root base into pairsFind the largest square that divides into the first number or pairSubtract the square from the first number or pairDrop down the next pairMultiply the first digit of the square by twoSet up the next factor equationFind the number that fills the blanksPut the number next to the first digit[tex]\sqrt{75a^{8}b^{5} } =\sqrt{25*3*a^{4}*a^{4}* b^{2} *b^{2}*b }[/tex]
=[tex]\sqrt{5*5*3*a^{2}*a^{2}*a^{2}*a^{2}*b^{2}*b^{2}*b }[/tex]
=5×a×a×a×a×b×b[tex]\sqrt{3*b}[/tex]
=5[tex]a^{4}b^{2}[/tex][tex]\sqrt{3b}[/tex]
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What is the graph of a quadratic equation and inequality called?
The graph of quadratic inequality when plotted represents the parabola.
The quadratic inequality will have a range of solutions, unlike the quadratic equation.
The quadratic inequality could be solved using factorization method for example
The quadratic inequality x²+6x+5 ≤0 can be solved by factorizing but instead of two solutions, there are a range of solutions.
For given equation we need to calculate value of x such that the graph is less than zero.
Hence solution to this inequality can be written as
−5≤x≤−1.
And the graph of given quadratic inequality represents the parabola.
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the two lines graphed below are not parallel. how many solutions are there to the system of equations
The number of solutions that are to the system of equations is (a) one
How to determine the number of solutions on the graphFrom the question, we have the following parameters that can be used in our computation:
The graph
In this case, the point of intersection of the equations represent the solution to the system
From the graph, the lines intersect at (3, 1)
Hence, the solution is (3, 1) ie. one solution
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find (g o f)(3) f(x)=3x-2 g(x)=x^2. A.1 b.-8 c49 d. 52
Answer:
To find (g o f)(3), we need to first apply f to 3, which gives us f(3) = 3 * 3 - 2 = 7. Then we need to apply g to the result of f(3), which gives us g(7) = 7^2 = 49. Therefore, (g o f)(3) = 49, so the answer is c.
Step-by-step explanation: