x² + y = 55 ---1
y=6---2
subs 2 in 1
x²+ 6 = 55
x² = 55-6
x² = 49
x =√49
x = 7
Need help with this
Gross profit is the profit that a business makes after the manufacturing and selling costs are subtracted from the total sales.
What is Gross profit?Gross profit is the profit a company makes after deducting the costs associated with making and selling its products, or the costs associated with providing its services. Gross profit will appear on a company's income statement and can be calculated by subtracting the cost of goods sold (COGS) from revenue (sales). These figures can be found on a company's income statement. Gross profit may also be referred to as sales profit or gross income.Gross profit=Net sales−CoGS.Gross margin is the difference between revenue and cost of goods sold, divided by revenue. Gross margin is expressed as a percentage. Generally, it is calculated as the selling price of an item, less the cost of goods sold, then divided by the same selling price.To learn more about Gross profit refer to:
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The side length of a square can be expressed by the formula a = Radical s where s is the area of the square. If the area of a square is 343m?, what is length of the side?
The side length of the square is 18.5 m
How to determine the side length of the squareFrom the question, we have the following parameters that can be used in our computation:
a = Radical s
where s is the area of the square.
Rewrite the above equation
So, we have the following representation
a √s
Given that the area of a square is 343m
We have
a =√343
Evaluate the root
a =18.5
Hence, the side length is 18.5 meters
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What are the 5 steps in solving equations by substitution?.
The 5 steps in solving equations by substitution are
Solve one equation for either x or y.Substitute the expression from step one into the 2nd equation.Solve the second equation for the given variable.Plug you solution back into the first equation.Write your solution as a point.If we take an example ,
Equation 1: 3x + 2y = 11Equation 2: -x + y = 3Substituting y = 3+x in equation 1 we get,
3x + 2(3 + x) = 11
3x + 6 + 2x = 11
5x = 5
x = 1
Put the value of x = 1 in the equation -x + y = 3
we get -1 + y = 3
so y = 4
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PLEASE HELP I WILL GIVE YOU BRAINLY ! !!!!
A spinner with repeated colors numbered from 1 to 8 is shown. Sections 1 and 8 are purple. Sections 2 and 3 are yellow. Sections 4, 5, and 6 are blue. Section 7 is orange.
A spinner divided into eight equal colored sections, with one orange, two purple, two yellow, and three blue.
Which statement about probability is true?
The probability of landing on blue is greater than the probability of landing on purple.
The probability of landing on yellow is less than the probability of landing on orange.
The probability of landing on orange is equal to the probability of landing on yellow.
The probability of landing on purple is equal to the probability of landing on blue.
Using the probability, we see that the statement, the probability of landing on blue is greater than the probability of landing on purple is true. Hence, statement 1 is true.
What is probability?Probability refers to potential. A random event's occurrence is the subject of this area of mathematics. The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events. The degree to which something is likely to happen is basically what probability means.
From the given spinner we can observe that:
P (Purple) = 2 / 8
P (Yellow) = 2/8
P (Blue) = 3/8
P (Orange) = 1/8
Using the probability, we see that the statement, the probability of landing on blue is greater than the probability of landing on purple is true.
Hence, statement 1 is true.
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Find the distance from point B to point C.
Enter as a decimal rounded to the nearest tenth.
58°
6 mi
B
BC = [?]
The distance between points B and C is 10.3 miles.
How to find distance using trigonometric functions?Trigonometry is the study of angles and the angular relationships of planar and three-dimensional figures. Trigonometry is made up of trigonometric functions (also known as circular functions) such as cosecant, cosine, cotangent, secant, sine, and tangent.
If we have a triangle with a right angle,
Then, tan = Opposite/Adjacent side
To find the distance,
In the ABC right angle triangle,
5.7 miles on the adjacent side = AB
θ = 61°
We must locate the BC.
tan = Opposite/Adjacent side
tan61°= BC/5.7
BC = 5.7×tan61°
BC = 10.283 = 10.3 (to the nearest tenth).
The figure is attached below.
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What will be the area of an isosceles triangle with an equal side of 8 cm and each equal side of 5 cm?.
Answer::
Solution:
Altitude =
5
2
−4
2
=3
Area =
2
1
(base)(height)
=
2
1
×8×3=12cm
2
.
solutio
15 scouts can sell all of their troop's cookies in 24 days. How many days will it take for 18 scouts to sell cookies if the rate stayed the exact same? (Please give step-by-step solution too)
Answer:
28.8 days
Step-by-step explanation:
If. 15 scout = 24 days
than. 18 scout = ?
= 18/15 × 24 days
= 432/15
= 28.8 days.
If 15 scout can sell all their troops cookie's in 24 days than 18 scout too will sell cookies in 28.8 days.
Hello need this due in 5 minutes
Answer:
C) 12%
Step-by-step explanation:
Answer: The answer is B.
Step-by-step explanation:
Add all of the students who chose English together and u get 24 and 12 is 50% of 24
Write an exponential function in the form y=ab^xy=ab x that goes through points (0, 17)(0,17) and (2, 153)(2,153).
The locations (0, 17) and are traversed by an exponential function of the type y = abx, where a and b are constants (2, 153). We can utilise these points to solve for the values of a and b in order to determine the equation of the exponential function.
Since we now know that y = abx when x = 0, we can change the first point to read as follows:
17 = a(b^0)
We can simplify this to: since anything raised to the power of 0 is 1,
17 = a
We can now determine b using the second point (2, 153):
153 = ab^2
By applying the formula:
153/a = b^2
taking square root
b = sqrt(153/a)
Substitute a = 17
b = sqrt(153/17)
The equation will now look like this when we add the value of a back in:
y = a * b^x
y = 17 * sqrt(153/17)^x
y = 17 * sqrt(9)^x
Consequently ,y = 17 * 3^x, is the exponential function that passes between the positions (0, 17) and (2, 153).
Therefore , the exponential function is y = 17 * 3^x .
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Factorisation by remarkable identities
Factorization by remarkable identities use the following identities, a² + 2ab + b² , a² - 2ab + b² , a² - b² , and x² + x (a + b) + ab.
What is factorization?An algebraic expression is factorized when it is written as the product of its factors. These variables, factors, or algebraic expressions might be present.
Use of Identities in Factorization utilizing identities is substantially simpler when employing some of the identities that exist.
Several expressions that need to be factored have the following forms or may be transformed into them: a² + 2ab + b², a² - 2ab + b² , a² - b² , and x² + x (a + b) + ab. Using Identities, I, II, III, and IV, it is simple to factorize these expressions.
Using each identity individually, we will study factorization in this part.
(a + b)² = a² + 2ab + b²
(a - b)² = a² - 2ab + b²
a² – b² = (a + b) (a – b)
(x + a) (x + b) = x² + x (a + b) x + ab
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Complete question:
How to do factorisation by remarkable identities?
Which of the following are solutions to the inequality below? Select all that apply.
d>5
>
d=7
d=9
d=4
d = 1
Solutions of given inequality expression are d = 7 and d = 9
What are Inequatility expressions:Mathematical expressions with inequalities are those in which the two sides are not equal to each other but less or greater than the other.
In other words, it is defined as a non-equal comparison between two expressions. Just like equations, these expressions are also made up of variable and constant terms.
The signs that we used in Inequatility expressions are
≠ for not equal
< for less than
> for greater than
Here we have
d > 5 is an Inequality, which means d is greater than 5
Then the given expression will be satisfied for all the values which are greater than 5
Therefore,
Solutions of given inequality expression are d = 7 and d = 9
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________ analysis is a statistical method for analyzing the intercorrelations among various measures or test scores. It can be used to identify clusters of correlated items that are assumed to measure the same underlying trait, ability, or aptitude
The Factor analysis is a statistical method for analyzing the intercorrelations among various measures or test scores.
Factor analysis is a technique used to reduce a large number of variables to a smaller number of factors. This technique extracts the maximum common variance from all variables and puts them into the common score. This score can be used for further analysis as an index for all variables. A "factor" is a set of observed variables with similar response patterns. These are associated with hidden variables that are not directly measured (called noise variables). Factors are listed by their factor loadings, or the amount of variation in the data they can explain. There are two types: exploratory and confirmatory.
Exploratory factor analysis is used when we do not know the structure of our data or the number of dimensions in a set of variables.Confirmatory factor analysis is used for validation as long as we have a clear idea of the structure of our data or the number of dimensions in a set of variables.To learn more about factor analysis, refer:
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A number of squares are connected in a row to form a rectangle. The table shows the relationship between the number of squares, x, and the perimeter, y, of the rectangles they form. Select all the true statements about this relation. Number of squares, x 1 2 3 4 perimeter, y 8 12 16 20.
Perimeter is directly proportional to number of squares, x and is 4x where x is the number of squares.
What is perimeter ?
Perimeter is the distance around the edge of a two-dimensional shape. It is the sum of the lengths of all the sides of a shape. It is commonly used to measure the size of a closed shape such as a square, rectangle, or circle. The formula for perimeter depends on the shape in question.
The statements that are true about the relation between the number of squares and the perimeter of the rectangles they form are:
As the number of squares increases, the perimeter of the rectangle also increases.
The perimeter of the rectangle is 4 times the number of squares.
The perimeter increases by 4 for every increase in 1 square.
The perimeter is calculated by multiplying the number of squares by 4.
The perimeter is directly proportional to the number of squares.
Perimeter is directly proportional to number of squares, x and is 4x where x is the number of squares.
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A candy box i haped like a rectangular prim. The box i 8 inche long, three inche wide, and 2 inche high. How much paper i ued to wrap the box?
92 inches² paper would be needed to wrap the prism completely.
What is the Surface Area of a Rectangular Prism?
The total region or area covered by all the faces of a rectangular prism is defined as the surface area of a rectangular prism. A rectangular prism is a three-dimensional shape. It has six faces, and all the faces are rectangular-shaped. Therefore, both the bases of a rectangular prism must also be rectangles.
Given here, The dimensions of the rectangular prism are 8,3,2 in inches.
Total surface area of a rectangular prism
= 2(lb + bh + lh)
Thus TSA
= 2(24+16+6)
= 92 inches²
Hence, 92 inches² paper would be needed to wrap the prism completely.
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Please help me with this math problem!! Will give brainliest!! :)
Answer:
42 feet
Step-by-step explanation:
Since they are similar, that means the rectangles are reduced copies of each other. So, to find the length, you have to do 60/(40/28), to get the length of the pool. 40/28 is the ratio. 60/(40/28) = 42, so the answer is 42 feet.
Answer: 42 feet
Step-by-step explanation:
Width of pool to patio = 28 : 40
28 : 40 = 7 : 10
Multiply both sides by 6:
42 : 60, so the length of the pool is 42 feet
Can you help please?
To be a function, each x-value (or input) can only be used once. Each x-value (or input) can only be paired with a single y-value (or output).
If any x-value (or input) is paired with more than one y-value (or output), it's not a function.
Top Left:
Not a function
"rock" and "leaf" are paired with two outputs.
Top Right:
Not a function
The one input goes to three outputs.
Bottom Left:
Function
Each x-value/input is used only once.
Bottom Right:
Not a function
The x-value of 4 is used twice and paired with two different y-values.
18. The table shows the amount of time you work and your total wages. Write an equation in
slope intercept form that gives your wage at any time. What do the slope and y-intercept
represent?
Time worked, x Wages earned,
. y($)
1. 9.25
3. 27.75
7. 64.75
The slope and y-intercept represent, time worked, x Wages earned,
y($) is 9.25.
Give a brief account in slope?In mathematics, the slope of a line is a measure of its steepness and direction. It is defined as the ratio of the "rise" (the change in the y-coordinate) to the "run" (the change in the x-coordinate) between two points on a line. The slope is often represented by the letter "m" and can be calculated using the formula:
m = (y2 - y1) / (x2 - x1)
The slope of a line can also be thought of as the coefficient of the x-term in the equation of the line in the form of "y = mx + b" where m is the slope.
From the table, we can see that the wages earned are directly proportional to the time worked. This is a linear relationship and we can find the equation of the line using the point-slope form.
The point-slope form of a linear equation is y - y1 = m(x - x1)
where m is the slope of the line and (x1, y1) is a point on the line.
We can use the data from the table to find the slope of the line.
m = (y2 - y1) / (x2 - x1)
We can use the first two data points (x1 = 1, y1 = 9.25) and (x2 = 3, y2 = 27.75) to find the slope:
m = (27.75 - 9.25) / (3 - 1) = 18.5/2 = 9.25
Now we have the slope, we can use the point (x1 = 1, y1 = 9.25) to find the y-intercept, b
9.25 = 9.25 * 1 + b
we can find b is 0
So, the equation of the line in slope-intercept form is y = 9.25x + 0
The slope of the line, m = 9.25, represents the rate of change of the wages earned with respect to the time worked. It means that for every one-hour increase in time worked, the wages earned increase by $9.25. The y-intercept, 0, represents the wage earned when no time has been worked, which is 0$.
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The slope and y-intercept represent, time worked, x Wages earned, y($) is 9.25.
Give a brief account of slope.In mathematics, the slope of a line is a measure of its steepness and direction. It is defined as the ratio of the "rise" (the change in the y-coordinate) to the "run" (the change in the x-coordinate) between two points on a line. The slope is often represented by the letter "m" and can be calculated using the formula:
m = (y₂ - y₁) / (x₂ - x₁)
The slope of a line can also be thought of as the coefficient of the x-term in the equation of the line in the form of "y = mx + b" where m is the slope.
From the table, we can see that the wages earned are directly proportional to the time worked. This is a linear relationship and we can find the equation of the line using the point-slope form.
The point-slope form of a linear equation is y - y₁ = m(x - x₁)
where m is the slope of the line and (x₁, y₁) is a point on the line.
We can use the data from the table to find the slope of the line.
m = (y₂ - y₁) / (x₂ - x₁)
We can use the first two data points (x₁ = 1, y₁ = 9.25) and (x₂ = 3, y₂ = 27.75) to find the slope:
m = (27.75 - 9.25) / (3 - 1)
= 18.5/2
= 9.25
Now we have the slope, we can use the point (x₁ = 1, y₁ = 9.25) to find the y-intercept, b
9.25 = 9.25 * 1 + b
We can find b is 0
So, the equation of the line in slope-intercept form is y = 9.25x + 0
The slope of the line, m = 9.25, represents the rate of change of the wages earned with respect to the time worked. It means that for every one-hour increase in time worked, the wages earned increase by $9.25. The y-intercept, 0, represents the wage earned when no time has been worked, which is 0$.
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Is 64 a cube number?.
Yes, 64 a cube number.
64 is the cube of 4.
As, 4 x 4 x 4 = 64
The cubes are made up of values that are obtained by multiplying integers by themselves three or four times. The cube's original number can be found by raising any natural number to the power of three.
Cubes are the numbers that are produced when an integer is multiplied by itself three times. We can find cubes for any number, whether it be an integer or a fraction. In order for the cube of a whole number (x) to produce a perfect cube, the cube root of x3 must equal x. The procedure of locating cubes is thus the opposite of locating the cube root.
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X/4 + 11 = 25
Solve for x
Answer: x=56 you can just look it up on
Answer:
[tex]x=56[/tex]
Step-by-step explanation:
[tex]\frac{x}{4}+11=25\\\\[/tex]
Mutiply by 4 every each number you see.
[tex]x+44=100[/tex]
Subtract -44 in both sides.
[tex]x+44-44=100-44[/tex]
So,
[tex]x=56[/tex]
Hope this helps :D
which choice is equivalant to the quotient shown here for acceptable values of x? sqrt 9x^2 divided by sqrt 5x
a. x sqrt 9x/5
b. sqrt 9x^3/5
c. sqrt 45x^3
d. sqrt 9x/5
The equivalent expression of the given value is sqrt 9x/5. Option D
What is the equivalent?We have to note that when we are dealing with this expression, we have to bear in mind one of the rules of surd that states that; √P/√Q = √P/Q. This is the rule of surd that would guide our operation here.
We have that;
√9x^2/√5x
This would be the same as;
√9x^2/5x
According to the rule above, we now have;
√9x/5
Thus, by the use of the laws of surd we would have the expression √9x/5 as shown in the solution above.
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Please help quick!!!
Answer: x = 13, and the angle measures are 131, 49, 131, 49.
Step-by-step explanation:
7x + 40 = 10x + 1
40 = 3x + 1
39 = 3x
x = 13
The obtuse angle is 131, and the acute one is 49.
How do you find the roots of a quadratic equation in factored form?.
By setting one side of a quadratic equation to zero, factoring the resulting polynomial, and then using the Zero Product Property, you can obtain the solutions, or roots, of these equations.
According to the Principle of Zero Products, if ab = 0, then either an or b, or both a and b, are 0, or both are 0. The roots of a function (f (x) can be any function) are the answers to y = f (x) when y = 0. These are the locations where an equation's graph crosses the x-axis.
To use factoring to solve a quadratic equation:
1. Convert the equation to standard form with a zero on one side.
2. Factor the non-zero side.
3. Reset each component to zero.
4. Solve each of the ensuing equations.
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A Foucault pendulum can be used to demonstrate that the Earth rotates . The time , t , in seconds , that it 2n 67 takes for one swing or period of the pendulum can be modeled by the equation where L is the length of the pendulum in meters and g is a constant of 9.81 m / . The first Foucault pendulum was constructed in 1851 and has a pendulum length of 67 m . Determine , to the nearest tenth of a second , the time it takes this pendulum to complete one swing . Another Foucault pendulum at the United Nations building takes 9.6 seconds to complete one swing . Determine , to the nearest tenth of a meter , the length of this pendulum
The time to complete one swing or period is 16.4 seconds and the length is 3.3 meters
The time to complete one swingFrom the question, we have the following parameters that can be used in our computation:
L = 67 meters and g = 9.81 m/s²
The time, t, in seconds, that it takes for one swing or period of the pendulum can be modeled by the equation:
t = 2π(√(L/g))
Substitute the known values in the above equation, so, we have the following representation
t = 2π(√(67/9.81))
Evaluate
t = 16.4 seconds (approx)
The length of the pendulumHere, we use the same equation and solve for L
In this case, t = 9.6
t = 2π(√(L/g))
substitute the known values in the above equation, so, we have the following representation
9.6 = 2π(√(L/9.81))
So, we have
L = (9.6/(2π))² * 9.81
Evaluate
L = 3.3 meters (approx)
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What is the inverse of a inverse?.
The inverse of an inverse function is the original function.
For example, if a function f(x) has an inverse function g(x) such that f(g(x)) = x and g(f(x)) = x for all x in their respective domains, then the inverse of g(x) is f(x).
This is because when you apply the inverse function twice, it cancels out the effect of the inverse, and leaves you with the original function.
In mathematical notation, if f^-1(x) is the inverse of f(x), then (f^-1)^-1(x) = f(x)
So the inverse of an inverse is the original function, which means that (f^-1)^-1 = f
It's also worth noting that any function and its inverse are always one-to-one function, meaning that each element of the domain of the function corresponds to exactly one element of the range and vice-versa, which makes it possible to define an inverse function.
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how to find the zeros and multiplicity of a polynomial
The zeros of a polynomial are the values of x that make the polynomial equal to 0.
To find the zeros, you need to set the equation equal to 0 and solve for x. The multiplicity of a zero is the number of times that the factor (x – zero) is a factor of the polynomial. To find the multiplicity of a zero, you need to find the highest power that x appears in the equation. For example, if the equation is (x-2)2•(x+1)3, then the zero is 2, and the multiplicity is 2.
The zeros of a polynomial are the values of x that make the equation equal to zero. The multiplicity of a zero is the number of times the factor (x - zero) occurs in the equation. To find the zeros and multiplicity of a polynomial, the polynomial needs to be factored into linear factors. The zeros are the x-intercepts of the equation (where the graph crosses the x-axis). The multiplicity is the power of the factor (x - zero). For example, if the equation is (x-2)^2(x-5), the zeros are x=2 and x=5 and the multiplicity of the zeros is 2 for x=2 and 1 for x=5.
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What are the 4 ways to solve an equation?.
Four ways of solving an equation are Graphical, Elimination, Substitution, and Cross multiplication.
Graphical method: To solve linear equations graphically, first draw the graph for both equations in the same coordinate graph and locate the intersection point on the graph.
Elimination method: In this method, any of the coefficients is first eliminated by equating. After eliminating the coefficient, the equations are resolved to get the other equation. For example:
3x + 2y = 9 ———–(i)
x – y = 6 ———–(ii)
Here, if equation (ii) is multiplied by 3, the coefficient of “x” will become equal and can be eliminated.
So, multiply equation (ii) × 3 and then subtract equation (i)
3x + 2y - 9 - 3x-3y-18 = 0
y = -9/5
Now, put the value of y = 1.8 in equation (ii).
So, x – 1.8 = 6
x = 4.2
Substitution method: To solve a linear equation using this method, first, take the value of one variable separately from any of the equations. Then, substitute the value of this variable in the second equation and solve it.
Cross multiplication method: Linear equations can be easily solved using this method. This technique is used to simplify the solution. The following formula is used for solving 2 variable equation:
x /(b₁ c₂ − b₂ c₁) = y / (c₁ a₂ − c₁ a₁) = 1 /(b₂ a₁− b₁a₂)
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For what value of k do the system of equations 2x 3y 4 and 6x 27y 12 has infinite solutions?.
The system of equations 2x + 3y = 4 and 6x + 27y = 12 has infinite solutions when the coefficients of x and y are the same ratio on both equations,
2x + 3y = 4
6x + 27y = 12
For the system of equations to have infinite solutions, the ratio of the coefficients of x and y must be the same. In this case, the ratio of the coefficients of x is 2/6 = 1/3 and the ratio of the coefficients of y is 3/27 = 1/9. Since the ratio of the coefficients is not the same, the system of equations does not have infinite solutions.
Hence, the value of k for which the system of equations 2x + 3y = 4 and 6x + 27y = 12 has infinite solutions is not exist.
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When Lavaughn moved into a new house, he planted two trees in his backyard. At the
time of planting, Tree A was 30 inches tall and Tree B was 15 inches tall. Each year
thereafter, Tree A grew by 2 inches per year and Tree B grew by 5 inches per year. Let
A represent the height of Tree At years after being planted and let B represent the
height of Tree B t years after being planted. Write an equation for each situation, in
terms of t, and determine which tree is taller after 6 years.
PLSSS HELPPPP
The height of Tree A t years after being planted can be represented by the equation:
A = 30 + 2t
This equation states that the initial height of the tree (30 inches) plus the annual growth of the tree (2 inches per year) multiplied by the number of years that have passed (t) will give the current height of the tree.
The height of Tree B t years after being planted can be represented by the equation:
B = 15 + 5t
This equation states that the initial height of the tree (15 inches) plus the annual growth of the tree (5 inches per year) multiplied by the number of years that have passed (t) will give the current height of the tree.
To determine which tree is taller after 6 years, we can substitute t = 6 into each equation and compare the results:
A = 30 + 2(6) = 30 + 12 = 42 inches
B = 15 + 5(6) = 15 + 30 = 45 inches
Tree B is taller than Tree A after 6 years because 45 inches is greater than 42 inches.
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what is the value for f?
Answer:
f = 21
Step-by-step explanation:
since the rectangles are scaled copies then the ratios of corresponding sides are in proportion, scaled copy to original, so
[tex]\frac{f}{28}[/tex] = [tex]\frac{9}{12}[/tex] ( cross- multiply )
12f = 28 × 9 = 252 ( divide both sides by 12 )
f = 21
line graph shows number of pairs of shoes owned by some children
The modal number of the pairs of shoes owned by the children is 3 pairs of shoes.
What is the modal number ?In mathematics, the modal number or mode, is the number that appears on the data set the most times out of all the numbers that appear on a set of numbers or data.
In the case of this line graph on the number of pairs of shoes that children own, the modal number would be 3 pairs of shoes as this is the highest number according to the fact that 5 students own 3 pairs of shows.
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The question is:
What is the modal number of pairs of shoes owned by the children?
