i don't know how to do this please help
Answer:(-2,-3)
Step-by-step explanation: We are using elimination to solve this system of equations. They've already done the balancing so let's use their given equation. It states
\(4y+3x=-6\) and \(3y-3x=-15\)
Combine the equations which will eliminate the x term and you get :
\(7y = -21\)
which means
\(y=-3\)
plug it back in to solve for x and you get the x-value to be -2.
2 The triangle and the rectangle shown below have equal perimeters. Find the measures of the side lengths of the triangle. (Figures not drawn to scale) 4(x-1) *+8 3x-1 5x +
Answer:
180
Step-by-step explanation:
Subtract the sum of the two angles from 180 degrees. The sum of all the angles of a triangle always equals 180 degrees. Write down the difference you found when subtracting the sum of the two angles from 180 degrees. This is the value of X.When side lengths are given, add them together.
Solve for a missing side using the Pythagorean theorem.
If we know side-angle-side information, solve for the missing side using the Law of Cosines.
PLEASE HELP! all u have to do is determine whether it is positive or negative!!!
Answer:
positive
Step-by-step explanation:
Rewrite (128 + 32) using factoring.
2(124 + 17)
4(32 + 8)
8(17 + 4)
12(14 + 3)
The expression (128 + 32) when rewritten using factoring is 4 * (32 + 8)
How to rewrite the expression using factoring?The expression in the question s given as
(128 + 32)
Express the numbers 128 and 32 as the product of their factors
i.e. we factor out 4 from the expression
So, we have
(128 + 32) = (4 * 32 + 4 * 8)
Next, we factor out the common factor (i.e. 4) from the expression
So, we have
(128 + 32) = 4 * (32 + 8)
Rewrite the above expression as follows
(128 + 32) = 4(32 + 8)
Hence, the expression (128 + 32) when rewritten using factoring is 4 * (32 + 8)
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Determine whether the statement is true or false. if it is false, rewrite it as a true statement. class boundaries ensure that consecutive bars of a histogram touch.
The false statement suggests that class boundaries ensure consecutive bars of a histogram touch, but this is incorrect. Class boundaries are used to define intervals and group data, not to ensure that bars touch.
Class boundaries in a histogram are not designed to ensure that consecutive bars touch. Instead, they are used to define the intervals or ranges into which the data is grouped. The purpose of class boundaries is to establish a clear distinction between adjacent classes, making it easier to interpret the data and create meaningful intervals for analysis.
To clarify, let's consider an example where we have a set of data points ranging from 10 to 30. We want to create a histogram with five bars. We can define the class boundaries as follows:
Class 1: 10 - 14.9
Class 2: 15 - 19.9
Class 3: 20 - 24.9
Class 4: 25 - 29.9
Class 5: 30 - 34.9
In this example, the class boundaries are chosen based on the desired intervals for the histogram. However, it's important to note that the bars representing these classes in the histogram will not touch each other. There will be gaps between them to indicate that they are separate intervals.
The purpose of class boundaries is to create distinct and meaningful intervals for analyzing the data in a histogram.
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Interpet mixed representations
In the given situation the mean score of the players in the soccer match is 1.67 respectively.
What is mean?There are various mean types in mathematics, particularly in statistics.
Each mean helps to summarize a certain set of data, frequently to help determine the overall significance of a specific data set.
By dividing the sum of the given numbers by the entire number of numbers, the mean—the average of the given numbers—is determined. Mean is equal to (Sum of All Observations/Total Observations).
Mean formula:
Mean = sum of terms/number of terms
Now, insert values:
Mean = 2+2+0+3+1+2/6
Mean = 10/6
Mean = 1.66
Mean = 1.67
Therefore, in the given situation the mean score of the players in the soccer match is 1.67 respectively.
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Considering that the lower intersection is a translation of the upper intersection, what does this mean about the measures of the correspondingangles?
Given:
Considering that the lower intersection is a translation of the upper intersection.
Required:
To find the meaning about the measures of the corresponding angles.
Explanation:
The ower intersection is a translation of the upper intersection.
This means that corresponding ngles overlap ech other on translation.
So, the corresponding angles are congruent.
Final Answer:
The corresponding angles are congruent.
The wrestling team wants to sell pies for a
fundraiser, The cafeteria helped out by
donating 2 pies. Each pie will be cut into 4
pieces. If the team wants to sell at least 32
pieces, how many pies must the wrestling
team bake ?
Answer:
6
Step-by-step explanation:
2x4=8
32-8=24
24/4=6
=6
Write a unit rate for the situation.
1080 miles on 15 gallons
Answer:
72 miles=1 gallon
Step-by-step explanation:
Divide 1080 by 15 and divide 15 by 15. You get 72 and one.
The table shows the consolidated government fiscal framework for 2020/21- 2022/23 financial year in billions, the total amount collected by government from taxpayers (Revenue), the total amount spent by government (Expenditure), and the Budget Balance thereof. Consolidated Government Fiscal Framework 2020/21-2022/23 1 p9) 2020/21 outcome R billion Revenue Expenditure Budget Balance (Adapted from: http://www.sars.gov.za/home.asp?pid=63430;chapter 1.1 1.2 2021/22 Estimate 666.9 832.5 -165.6 Use the table above to answer the following questions: 761.0 904.1 -143.1 2022/23 843.0 977.2 -134.2 Write down the tax estimated to be collected by government during the financial year 2020/21? Write the amount in 1.1 in billions numerically (2)
the tax estimated to be collected by the government during the financial year 2020/21 is 666.9 billion rands.
why it is and what is a financial year?
The tax estimated to be collected by the government during the financial year 2020/21 is not explicitly given in the table. However, the total revenue collected by the government during the financial year 2020/21 is given, which is:
666.9 billion rands
Therefore, the tax estimated to be collected by the government during the financial year 2020/21 is 666.9 billion rands.
A financial year (also known as fiscal year) is a period of 12 months that a company or government uses for financial reporting and accounting purposes. It does not necessarily correspond to the calendar year, which is a period of 12 months starting on January 1st and ending on December 31st.
The financial year is important because it helps organizations to keep track of their financial performance over a consistent period of time, which facilitates comparison of financial results from year to year. The financial year is often chosen to align with a company's operational cycle, which may be seasonal or have other considerations that affect the timing of revenues and expenses.
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Can someone pleaseeee help and if you’re correct i’ll give brainliest
Answer:
can you copy and paste it on a question its kinda blurry for me
Step-by-step explanation:
Answer:
B / The Girl
Step-by-step explanation:
.
what function computes the value in which one-half of the data is above and one-half is below.
a. Middle
b. Mode c. average
d. Median
(click photo) i’ve posted this 3 times and no ones helped me :((( PLEASE help me with 3-8. i’d really appreciate it. i’m the worst at math! :(
Answer:
5) Slope(m): 2
y-intercept(b): (0, 4)
6) Slope(m): -1
y-intercept (b): (0, -6)
7) Slope(m): 5
y-intercept (b): (0, 8)
8) Slope(m): 7
y-intercept (b): (0, 1/2)
Step-by-step explanation:
in order to find the slope and y-intercept you need to rewrite the equation in y=mx+b.
in 5, the equation is -2x+y=4. we need to add 2x to both sides to get y=2x+4. now you can find your slope (2) and your y-intercept point (0, 4)
in 6, the equation is x+y=6. we need to subtract x from to both sides so we get y=-x+6. you would get a slope of -1 and a y-intercept point of (0, 6)
in 7, the equation is -5x=8-y. we need to add 5x to both sides to get 0=8-y+5x. then add y to both sides so we get the equation y=5x+8. you have a slope of 5 and a y-intercept point of (0, 8)
in 8, the equation 0=1-2y+14x. we need to add 2y to both sides and we get 2y=14x+1. since we need y to stand alone we need to divide both sides by 2. now we have y=7x+1/2. the slope is 7 and the y-intercept point is (0, 1/2)
Hope this helps!! :)
two curves are orthogonal to each other if their tangent lines are perpendicular at each point of intersection. a family of curves forms orthogonal trajectories with another family of curves if each curve in one family is orthogonal to each curve in the other family. use the following steps a through c to find the orthogonal trajectories of the family of ellipses 2x^2 y^2
The orthogonal trajectories of a family of curves are a new set of curves that intersect the original curves at right angles. To find the orthogonal trajectories of the family of ellipses given by the equation 2x^2 y^2, follow these steps:
Differentiate the equation of the family of ellipses with respect to x or y (whichever is more convenient). In this case, let's differentiate with respect to y: d/dy (2x^2 y^2) = 4x^2y Find the slope of the tangent line to the family of ellipses at any given point by setting the derivative equal to -1 divided by the slope of the tangent line: 4x^2y = -1/m where m represents the slope of the tangent line.
Solve the resulting equation for y in terms of x to obtain the equation of the orthogonal trajectories: y = -1/(4x^2m) By following these steps, you can find the equation of the orthogonal trajectories of the family of ellipses. Differentiate the equation of the family of ellipses with respect to x or y (whichever is more convenient).
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A circular plot of land has a diameter of 14 yards. What is the area of the
land? Use 3.14 for n.
A. 43.96 yd?
B. 153.86 yd2
C. 21.98 yd2
D. 615.44 yd2
SUBMIT
Answer:
153.86
Step-by-step explanation:
use pi x radius squared
Answer:
the answer is B
Step-by-step explanation:
which of these fractions below are equivalent to 3/4?
Please? Help
Answer:
12/16, 6/8, 15/20, 24/32
Step-by-step explanation:
Because to find the equivalents, you have to multiply/ divide the numerator and the denominator with the same number.
The number of cans of soft drinks sold in a machine each week is recorded below. Develop forecasts for the period indicated and error calculations.
155, 145, 155, 162, 180, 165, 172, 149, 170, 172
Exponential smoothing. Use Excel Solver to determine the optimum alpha value to minimize MSE and answer:
What is the Mean Absolute Error (MAE)?
What is the Mean Squared Error (MSE)
The Mean Absolute Error (MAE) is [Insert value]. The Mean Squared Error (MSE) is [Insert value].
To calculate the Mean Absolute Error (MAE) and Mean Squared Error (MSE) using exponential smoothing, we need to find the optimum alpha value that minimizes the MSE. Excel Solver can be used to determine this value.
Organize the data: Arrange the given data in a column in Excel: 155, 145, 155, 162, 180, 165, 172, 149, 170, 172.
Set up the exponential smoothing model: Define the forecast for each period using the formula: Forecast = α * Actual + (1 - α) * Forecast(t-1)
Calculate the MAE and MSE: For each period, calculate the forecasted value using the exponential smoothing model. Then, calculate the absolute error by taking the absolute difference between the forecasted value and the actual value. Square each absolute error to obtain the squared error. Finally, calculate the average of the absolute errors to find the MAE and the average of the squared errors to find the MSE.
Use Excel Solver: To determine the optimum alpha value, you can set up Excel Solver to minimize the MSE by changing the alpha value. The objective is to find the alpha value that gives the lowest MSE.
After performing the calculations and using Excel Solver to find the optimum alpha value, you can obtain the Mean Absolute Error (MAE) and Mean Squared Error (MSE) for the given data. These values will provide a measure of the accuracy of the exponential smoothing forecast.
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the product of y squared and y cubed
Answer:
y^2*y^3
Step-by-step explanation:
Use the power of 5
Answer:
\( {y}^{2} \times {y}^{3} \\ \\ = {y}^{2 + 3} \\ \\ ={ y}^{5} \)
Please help and show work only do the left side
Writing linear equations given two points can be a useful skill when graphing linear equations.
Write a linear equation that passes through the given two points?To write a linear equation given two points, you need to first find the slope of the line. You can do this by finding the change in the y-value and dividing it by the change in the x-value. From there, you can use the slope to solve for the y-intercept and write the equation.For example, if the two points are (3, 4) and (0,5), you would find the slope by calculating the change in the y-value (5-4 = 1) and dividing it by the change in the x-value (0-3 = -3).The slope would then be 1/-3, which can be simplified to -1/3. To solve for the y-intercept, you can plug in one of the points and solve for b. In this case, you would plug in (3, 4) and solve for b, giving you b = 5. Now that you have the slope and y-intercept, you can write the equation as y = -1/3x + 5.y = -1/2xy = 5/3x + 5/3y = 3/5x + 1y = -1/2x - 2y = 6/5x + 5y = -4/4x - 8y = -3/5x - 7/5y = -2x - 4y = 5/6x + 7y = -1/2x + 4To learn more about linear equation refer to:
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Quick question
Select True or False. (1 point)
The expression 4x − 2(5x − 1) is equivalent to the expression 2 + 6x.
True
or
False
Answer:
False
Step-by-step explanation:
Let us evaluate the problem using the proper order of operation:
4x − 2(5x − 1)
To solve this problem, we use the order of operation called PEMDAS;
P - Parentheses
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction
Now, since operations inside the parentheses are of the utmost priority, let us solve this;
4x − 2(5x − 1)
= 4x - 10x +2
= -6x + 2 or 2 - 6x
We see that the solution give is false.
exercise 9-4. what is the present value of $1,490.30 per year for 10 years if the required return is 8 percent? enter your answers as amounts only with neither commas nor decimals rounded to the nearest hundred. e.g., 8599.99 is rounded to 8600.
the total amount will be $10000, for present value of $1,490.30
What is compound interest?
The interest on savings that is computed on both the initial principal and the interest accrued over time is known as compound interest. Compound interest is computed by multiplying the starting principal amount by one and the annual interest rate is raised to the number of compound periods minus one. The final step is to deduct the initial loan principal from the calculated value.
if the required return is 8 percent.
the present value of $1,490.30
The total year will be 10.
So the amount after 10 years will be:
Then Present value
$1490.30 x 6.71008140
10,000.03 = $10000
Hence, the total amount will be $10000.
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The function C (t) = StartFraction 4 t Over t squared + 2 EndFraction models the cost per student of a field trip when x students go on the trip. How is the parent function On a coordinate plane, 3 curves are shown. One curve opens up and to the right in quadrant 1 and goes through (2, 4) and (4, 1). Another curve approaches x = negative 2 in quadrant 2, changes direction at (0, 0), and then decreases in quadrant 4 and approaches y = 2. The third curve opens down and to the left in quadrant 3 and goes through (negative 4, negative 1) and (negative 2, negative 4). transformed to create the function On a coordinate plane, 2 curves are shown. One curve opens up and to the left in quadrant 2 and goes through (negative 4, 8) and (negative 6, 6). Another curve opens down and to the right and goes through (negative 1, negative 3), (0, 0), and (6, 3).?
It is vertically stretched by a factor of 200.
It is vertically stretched by a factor of 200 and shifted 10 units leftt.
It is vertically stretched by a factor of 200 and shifted 10 units up.
It is vertically stretched by a factor of 200 and shifted 10 units right.
It is vertically stretched by a factor of 200 and shifted 10 units up.
What is a function?A function is defined as a relation between a set of inputs having one output each. In simple words, a function is a relationship between inputs where each input is related to exactly one output. Every function has a domain and codomain or range. A function is generally denoted by f(x) where x is the input.
How do you write a function?You write functions with the function name followed by the dependent variable.
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Answer:
Step-by-step explanation:
i cant see the answer
What matlab command finds the coefficients of a polynomial and can be used in linear regression to find the slope and y intercept of a linear equation.
a matlab command finds the coefficients of a polynomial and can be used in linear regression to find the slope and y intercept of a linear equation are mentioned below.
C = coeffs( p ) returns coefficients of the polynomial p with respect to all variables determined in p by symvar .
C = coeffs( p , var ) returns coefficients of the polynomial p with respect to the variable var .
yCalc2 = X*b;
plot(x,yCalc2,'--')
legend('Data','Slope','Slope & Intercept','Location','best');
Hence the matlab commands are mentioned.
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How do I graph the following features:
Slope = 1/4
Y-intercept = 3
Answer:
Ok so the information you gave is :-
Slope = 1/4
Y-intercept = 3
So first you will graph the y-intercept. So the y-intercept is 3 or (0, 3). Then you will plot the slope which is 1/4. If you know that slope = rise/run. So you will go 1 unit up and 4 units to the right. Hope this helps, thank you and if you need help then I am here.
Identify the range of values for x.
3x + 3
80⁰
x + 17
100⁰
Answer: \(-1 < x < 7\)
Step-by-step explanation:
Because 80 degrees is smaller than 180 degrees, but there are 2 pairs of congruent sides that form the labeled angles,
\(3x+3 < x+17\\\\2x < 14\\\\x < 7\)
However, the side lengths must be positive, so x > -1 (because of 3x+3).
So, the range is \(-1 < x < 7\)
Find the solution to the system
of equations. y=2x+3 y=-x
Answer:
X=-1, y=1
Step-by-step explanation:
- x=2x+3
-3x=3
X=-1
Y=-1*-1=1
A function fis defined by; f(x)=x2+4x+5 then find the value of
f(2).
Answer:
f(x)=17
Step-by-step explanation:
f(x)=(2)2+4(2)+5
=4+8+5
=17
f(x)=17
Answer:
f(2) = 17
Step-by-step explanation:
f(2) - sub in the number 2 in x
(2)² + 4(2) + 5
4 + 8 + 5
f(2) = 17
2.) True or False?
When working with a function, substituting a certain value of x into the formula gives only one value of y for that value of x.
Answer:
TRUE
Step-by-step explanation:
In a function, every domain value (x-value) must have exactly one corresponding range value (y-value). This means that in a function, an x-value or input value cannot have two different y-value or output value. Or else, it ceases to be a function.
So, when you substitute a certain value of x into the equation of a function, you can only have one exact value of y for that value of x.
In linear regression, one variable, called a __________ variable, is related to one or more ____________ variables by a linear equation.
A. dependent; response
B. independent; dependent
C. response; dependent
D. dependent; independent
In linear regression, one variable, called a dependent variable, is related to one or more independent variables by a linear equation.
What is the relation between a function and the dependent and independent variables?A function has the following format: y = f(x).
In which each value of y is a function of one value of x, and thus, x is the independent variable and y is the dependent variable.
That is, the input of the function is the independent variable and the output is the dependent variable.
In the case of multiple inputs, all the inputs are independent variables.
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Evaluate the expression without using a calculator.
sin(2arccos(1/3))
Exact Form of the expression is mathematically given as
\(\sin \left(2 \arccos \left(\frac{1}{3}\right)\right)\)
What is an expression?Generally, An expression is a combination of variables, numbers, operators, and/or functions that represent a value.
\(\sin \left(2 \arccos \left (\frac{1}{3}\right)\right)\)
Evaluate\($\arccos \left(\frac{1}{3}\right)$.\)
sin (2 *1.23095941)
Multiply 2 by 1.23095941.
sin (2.46191883)
The result can be shown in multiple forms.
Exact Form:
\(\sin \left(2 \arccos \left(\frac{1}{3}\right)\right)\)
Decimal Form:
0.62853936
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