\(\large\underline{\sf{Solution-}}\)
Given equation of line is
\(\sf \: 7x + y = 13 \\ \)
On substituting x = 0, we get
\(\sf \: 0 + y = 13\\ \)
\(\sf \: y = 13 \\ \)
\(\bf\implies \:y = 13 \\ \)
On substituting x = 1, we get
\(\sf \: 7 \times 1 + y =13 \\ \)
\(\sf \: 7 + y= 13 \\ \)
\(\bf\implies \:y = 6 \\ \)
On substituting x = 2, we get
\(\sf \: 7 \times 2 + y =13 \\ \)
\(\sf \: 14 + y= 13 \\ \)
\(\bf\implies \:y = - 1 \\ \)
Hᴇɴᴄᴇ,
☆ Pair of points of the given equation are shown in the below table.
\(\begin{gathered}\boxed{\begin{array}{c|c} \bf x & \bf y \\ \frac{\qquad \qquad}{} & \frac{\qquad \qquad}{} \\ \sf 0 & \sf 13 \\ \\ \sf 1 & \sf 6\\\\ \sf 2 & \sf - 1 \end{array}} \\ \end{gathered} \\ \)
☆ Now plot a graph using the above points.
☆ See the graph in attachment.
Now,
From graph, we concluded that given line meets the x - axis at (13/7, 0)
Suppose there are two producers in a market with the following supply functions. Supply 1: P=6+0.7Q Supply 2:P=16+0.6Q When the price is [Answer], the total quantity supplied is 250. (In decimal numbers, with two decimal places, please.) Answer:
The price at which the total quantity supplied is 250 is $11.58.
In order to find the price at which the total quantity supplied is 250, we need to equate the total quantity supplied by both producers (Supply 1 and Supply 2) and solve for the price.
Supply 1: P = 6 + 0.7Q
Supply 2: P = 16 + 0.6Q
To find the equilibrium price, we set the total quantity supplied equal to 250:
0.7Q + 0.6Q = 250
1.3Q = 250
Q = 250 / 1.3 ≈ 192.31
Now that we have the quantity, we can substitute it back into either supply function to find the price. Let's use Supply 1:
P = 6 + 0.7Q
P = 6 + 0.7 * 192.31
P ≈ 6 + 134.62
P ≈ 140.62
Therefore, the price at which the total quantity supplied is 250 is approximately $11.58.
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In a cla of 70 tudent there are 10 more girl than boy. What i the ratio of the number of boy to the number of girl?
35 to 35
30 to 37
3 to 4
6 to 8
The required ratio of the number of boy to the number of girl is 3/4.
What is Ratio?A ratio is a method for showing a relationship or look at two quantities of a similar kind. We use proportions to think about things of a similar kind. For instance, we might utilize a proportion to contrast the quantity of young men with the quantity of young ladies in your study hall.
According to question:Let us consider number of boys is x and that of girls is y.
x + y = 70 ------------------------(1)
And
y = x + 10
Put the value of y in eq(1),we get
x + x + 10 = 70
2x = 60
x = 30
So, the number of boys are 30, then girls are 30 + 10 = 40
Now, the ratio of the number of boy to the number of girl is
x/y = 30/40 = 3/4
Thus, ratio is 3/4.
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Two years ago there were 6 grams of a radioactive substance. now there are 5 grams. how much will remain 2 years from now?
The quantity of the radioactive material which would remain 2 years from now is; 4 grams.
What is the quantity remaining in 2 years?Since, it follows from the task content that after two year, the quantity of the radioactive substance decrease by 1 gram. Consequently, it follows from proportion that the quantity remaining in 2 years from now is; 5-1 = 4 grams.
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I need to know how to simplify expressions. Specifically decimal expressions for example 18.18 + 22.74
Help please!!!
Calculate the net profit margin for a shirt sold for $20 that has a $12 cost of goods sold and 20% operating expenses.
A. 28% C. $4
B. 33% D. 20%
1. Write the ratio in simplest form. 12 chaperones to 48 students.
which expression is obtained on subtracting 4x+6 from 7+2x
The expression is obtained on subtracting 4x + 6 from 7 + 2x is -2x + 1
What is the resulting expression of subtracting 4x+6 from 7+2x?Given the two expressions in the question;
( 4x + 6 ) and ( 7 + 2x )
To subtract 4x + 6 from 7 + 2x simply means ( 7 + 2x ) - ( 4x + 6 ).
Now, simplify
( 7 + 2x ) - ( 4x + 6 )
Distribute the negative sign to all the terms in the second expression.
( 7 + 2x ) -4x - 6
Now collect and add like terms
2x - 4x - 6 + 7
Add 2x and -4x
-2x - 6 + 7
Add -6 and 7
-2x + 1
Therefore, the resulting expression is -2x + 1.
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Express the following quantities as ordinary decimal numbers: (use solution)
:: The estimated world population for the year 2000 was 6.130 x 10⁹.
Step-by-step explanation:
\(6.130 \times {10}^{9} = 9130000000\)
♡BRAINLIEST TO RIGHT ANSWER♡
------Find the surface area of the figure, round your answer to the nearest hundredth if necessary <3
5.1 in
1 in
Answer:
19.47
Step-by-step explanation:
if the radius Is 1 and height is 5.1
the area of a square garden is 121 feet squared how long is each side of the garden
Answer:
11 ft
Step-by-step explanation: A square has side lengths that are equal in length. Given that a side length of a square is x, the area would be x^2 because x*x = x^2. Now we have to reverse for the problem. If the area is 121 then what is x. 121=x^2. So we have to square root 121, resulting in 11. So each side of the garden is 11 feet each.
Answer: 7,320.5
Step-by-step explanation:
121 squared
= 1212
= 121 x 121
= 14,641 (Area)1/2=s, where s = side.
So 14,641÷2= 7,320.5
PLS HELP!! I WILL GIVE BRAINLIEST (SHOW WORKKK!!!)
5 < k - 2 < 11
3f + 3 < 6 or 7f - 20 > 50
Answer:
7 < k < 13
Step-by-step explanation:
5 < k - 2 < 11 ( add 2 to the 3 intervals )
7 < k < 13
Walkway Over the Hudson, a bridge that crosses the Hudson River in Poughkeepsie, is 2.063
kilometers long. Anping Bridge, which was built in China 850 years ago, is 2.07 kilometers long.
a. What is the total span of both bridges?
Show your thinking
b. How much longer is the Anping Bridge
than the Walkway Over the Hudson?
Answer: 4.126 km
Step-by-step explanation:
First, We have to find total span of both bridges
As Question indicates 'total' ,that is, we have to find bridge length in total ( You can join Bridges to have better understanding)
Now, Walkway over hundson Bridge length= 2.063 km
Amping bridge length= 2.07 km
So, Total span of both bridges = 2.063+2.07 = 4.133 km
b) Now Leah wanna walk across and back on walkway over hudson ,that is, she wanna return to starting point from where she walk forth
So,that means, she walk double distance of length of walkway over hudson
So, total distance = 2× 2.063
= 4.126 km
hope this helps,
Plzzs give brainliest if you like my answer.
Solve the equation A
B
=
B
C
AB=BC for A
A, assuming that A
,
B
A,B and C
C are square matrices and B
B is invertible.
We have solved the equation AB=BC for A, assuming that A, B, and C are square matrices and B is invertible, then the solution is A=C B⁻¹.
First, let's take a look at the equation AB=BC. This is an equation that involves matrices, which are essentially rectangular arrays of numbers. In this case, we have three matrices: A, B, and C. The equation tells us that the product of A and B is equal to the product of B and C.
Now, we want to solve this equation for A. This means that we want to isolate A on one side of the equation and have everything else on the other side. To do this, we can use matrix algebra.
One property of matrices is that we can multiply both sides of an equation by the inverse of a matrix without changing the solution. Since we know that B is invertible, we can multiply both sides of the equation by B⁻¹, the inverse of B:
AB B⁻¹ = BC B⁻¹
Now, we can simplify the left side of the equation, because B times its inverse gives us the identity matrix I:
A I = C B⁻¹
Again, we can simplify the left side of the equation, because anything multiplied by the identity matrix stays the same:
A = C B⁻¹
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Using Pascal's Triangle
1a) Find a row whose row number is prime. Except for the 1s in that row, what is true of all the other entries?
b) Find another row whose row number is prime. Do you see the same pattern?
c) Use Pascal’s triangle to determine the number of 4, 5, or 6-element subsets a set with 15 elements has.
In Pascal's Triangle, the first prime row is Row 5, where all entries except the 1s are non-prime numbers. The second prime row is Row 11, which also follows the same pattern with non-prime entries except for the 1s.
a) To find a row whose row number is prime, we can start from the second row (row index 1) and iterate through the rows of Pascal's Triangle, checking if each row number is prime. Let's find the first prime row:
Row 1: 1
Row 2: 1 1
Row 3: 1 2 1
Row 4: 1 3 3 1
Row 5: 1 4 6 4 1
Row 6: 1 5 10 10 5 1
Row 7: 1 6 15 20 15 6 1
Row 8: 1 7 21 35 35 21 7 1
Row 9: 1 8 28 56 70 56 28 8 1
Row 10: 1 9 36 84 126 126 84 36 9 1
Row 11: 1 10 45 120 210 252 210 120 45 10 1
Row 12: 1 11 55 165 330 462 462 330 165 55 11 1
Row 13: 1 12 66 220 495 792 924 792 495 220 66 12 1
Row 14: 1 13 78 286 715 1287 1716 1716 1287 715 286 78 13 1
Row 15: 1 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1
The first prime row is Row 5, and except for the 1s in that row, all the other entries are non-prime numbers.
b) Let's find another prime row:
Row 1: 1
Row 2: 1 1
Row 3: 1 2 1
Row 4: 1 3 3 1
Row 5: 1 4 6 4 1
Row 6: 1 5 10 10 5 1
Row 7: 1 6 15 20 15 6 1
Row 8: 1 7 21 35 35 21 7 1
Row 9: 1 8 28 56 70 56 28 8 1
Row 10: 1 9 36 84 126 126 84 36 9 1
Row 11: 1 10 45 120 210 252 210 120 45 10 1
Row 12: 1 11 55 165 330 462 462 330 165 55 11 1
Row 13: 1 12 66 220 495 792 924 792 495 220 66 12 1
Row 14: 1 13 78 286 715 1287 1716 1716 1287 715 286 78 13 1
Row 15: 1 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1
The second prime row is Row 11, and similar to the previous case, except for the 1s in that row.
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If the transformation was a rotation, tiffany can or cannot be certain the trapezoids are congruent?
Answer: Tiffany can be certain the trapezoids are congruent.
Step-by-step explanation: Two figures are congruent when their corresponding angles are equal and they have the same shape and size.
A figure can go thorugh 3 types of transformations:
Rotation: the figure is turned around a fixed point;Reflection: is created by fliping over the figure over a line;Translation: move the figure to another location, without changing its size;As long the figure doesn't change its size or shape, it doesn't matter if it's rotated, reflected or translated, they will be congruent.
When the trapezoid was rotated creating another one, the two shapes didn't change its size or shape, so Tiffany can be certain they are congruent.
convert into slope intercept form, show all work
x-2y=0
Answer:
Hello again the answer is -1/2x
Step-by-step explanation:
Since the Y is multipling the 2 you have to isolate it by dividing it by 2 and move x away from the Y
I think it is y=1/2x
9 ^ (- 1/2) + 25 ^ (- 1/2) + 32 ^ (3/5)
Evaluate
Answer:
8.533333
Step-by-step explanation:
9^(− 1/ 2 )+25− 1 2 +32^ (3/ 5) = 9 (−1 /2) +25(− 1 /2) +32 ^(3 /5)
=0.333333+25^(− 1/ 2) +32 ^(3 /5)
=0.333333+25 ^(−1 /2) +32 ^(3/ 5)
=0.333333+0.2+32^ (3/ 5)
=0.533333+32 ^(3 /5)
=0.533333+8
=8.533333
Help Me! ASAP! I will mark the brainliest! Audra plays the piano and wanta to play more songs. She decides to learn the same number of new songs every month. She makes a graph to show the number of songs she learns. Which Stateement is true?
A. The slope is 1/2.
B. The slope is 5.
C. The point (20, 45) is on the line.
D. The y-intercept represents the number of months Audra has been playing piano.
Answer:
C. The point (20, 45) is on the line.
Step-by-step explanation:
The number of songs learned by Audra vs the number of months is plotted in the graph provided.
Some points are recognized from the graph: (0,5) (1,7) (2,9) among others. With two of these points, we construct the linear model of the graph.
The equation of a line passing through points (x1,y1) and (x2,y2) can be found as follows:
\(\displaystyle y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\)
Using (0,5) and (1,7):
\(\displaystyle y-5=\frac{7-5}{1-0}(x-0)\)
\(\displaystyle y-5=\frac{2}{1}(x-0)\)
y - 5 = 2x
y = 2x + 5
The slope of the line is 2. So, A. and B are discarded.
The y-intercept represents the number of songs Audra played initially at time = 0.
The point (20,45) is on the line as we'll prove below:
y = 2(20) + 5 = 40 + 5 = 45
When x=20, y=45
Thus, the correct choice is:
C. The point (20, 45) is on the line.
what is papa math calculator?
The Papa Math Calculator is a useful tool for students, teachers, professionals, and anyone who needs to perform mathematical calculations on a daily basis.
Mathematics is a complex and challenging subject that requires logical thinking and problem-solving skills. The Papa Math Calculator is a digital tool that helps you perform various mathematical operations, such as addition, subtraction, multiplication, division, percentages, square roots, and many more.
The calculator's functions are organized into different categories, such as Basic Math, Algebra, Geometry, Trigonometry, and Calculus. Each category has a set of tools and functions that allow you to perform specific mathematical operations.
In the Basic Math category, you can use the calculator to perform simple arithmetic operations such as addition, subtraction, multiplication, and division.
In the Algebra category, you can use the calculator to solve algebraic equations, factor polynomials, and find the roots of quadratic equations.
In the Geometry category, you can use the calculator to calculate the area, perimeter, and volume of different geometric shapes such as circles, triangles, rectangles, and spheres.
In the Calculus category, you can use the calculator to perform calculus operations such as differentiation and integration.
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I need help finding the x
\(▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪\)
Value of x is equal to ~
\(\boxed{ \boxed{13 \degree}}\)
\( \large \boxed{ \mathfrak{Step\:\: By\:\:Step\:\:Explanation}}\)
According to above figure, we can infer that Angles measuring (7x - 11)° and (3x + 41)° are equal to one another.
Because they form pair of corresponding angles.
that is ~
\(7x - 11 = 3x + 41\)\(7x - 3x = 41 + 11\)\(4x = 52\)\(x = 52 \div 4\)\(x = 13 \degree\)How are the properties of exponents used when dividing a polynomial by a monomial?
Answer:
a couple different obes
Step-by-step explanation:
there are five
f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6
where c is constant
The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.
Given a function:
f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6
where c is a constant.
The solution to the question is shown below.
Step 1: We have given a function:
f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6
We have to find the number of words we have to write to express this function in words.
Step 2: Solution
f(t) = et5+4t + ln(t²+3c)⁷ +te-1+5e⁶
Where,
et5+4t = exponential function
ln(t²+3c)⁷ = natural logarithmic function
te-1 = linear function
e⁶ = exponential function
Therefore, f(t) can be expressed in words as:
The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.
Step 3: Conclusion
Hence, the function f(t) can be expressed in words with:The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.
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Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem. (Round your answer to four decimal places.) y' = x^2 + xy y(0) = 4
By using Euler's method with a step size of 0.2, we estimate that y(1) = 4.5429.
The Euler's method is used to estimate a numerical solution of a first-order differential equation. The formula of Euler's method is given by:
y_1 = y_0 + hf(x_0, y_0)
Where: y_1 is the next value of y after one iterationy
0 is the initial value of yy' = f(x, y)h is the step size
This method is an iterative procedure that advances the estimate of y by one step by approximating the curve using a tangent line at each point along the curve.
Given that y(0) = 4 and h = 0.2, we can use Euler's method to estimate y(1) where y(x) is the solution of the initial-value problemy' = x2 + xy, y(0) = 4
Using Euler's method with a step size of 0.2, we get:
1) When x = 0, y = 4
y_1 = y_0 + hf(x_0, y_0) = 4 + 0.2(0 + 4(0))= 4.02
When x = 0.2, y = 4.02
y_2 = y1 + hf(x_1, y_1) = 4.02 + 0.2(0.2^2 + 0.2(4.02))= 4.10523
When x = 0.4, y = 4.1052
y_3 = y_2 + hf(x_2, y_2) = 4.1052 + 0.2(0.4^2 + 0.4(4.1052))= 4.1994144
When x = 0.6, y = 4.1994
4 = y_3 + hf(x_3, y_3) = 4.1994 + 0.2(0.6^2 + 0.6(4.1994))= 4.3032545
When x = 0.8, y = 4.3033
y_5 = y_4 + hf(x_4, y_4) = 4.3033 + 0.2(0.8^2 + 0.8(4.3033))= 4.4174496
When x = 1, y = 4.4174
y_6 = y_5 + hf(x_5, y_5) = 4.4174 + 0.2(1^2 + 1(4.4174))= 4.5429404
Therefore, using Euler's method with a step size of 0.2, we estimate that y(1) = 4.5429 (rounded to four decimal places).
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Approximate the sum of the series correct to four decimal places.[infinity] (−1)n − 1n28nn = 1
The series is an alternating series that satisfies the conditions of the Alternating Series Test, so we know that the series converges. To approximate the sum of the series, we can use the formula for the remainder of an alternating series:
|Rn| ≤ a(n+1), where a(n+1) is the absolute value of the first term in the remainder.
In this case, the absolute value of the first term in the remainder is 1/(2*(n+1))^2. So we have:
|Rn| ≤ 1/(2*(n+1))^2 To approximate the sum of the series correct to four decimal places, we can find the smallest value of n such that the remainder is less than 0.0001: 1/(2*(n+1))^2 ≤ 0.0001 Solving for n, we get: n ≥ sqrt(500) - 0.5 ≈ 22.36
So, to approximate the sum of the series correct to four decimal places, we need to add up the first 23 terms of the series: S23 = (-1^1-1/2^8) + (-1^2-1/4^8) + (-1^3-1/6^8) + ... + (-1^23-1/46^8) Using a calculator or a computer program, we find that S23 ≈ 0.3342. Therefore, the sum of the series correct to four decimal places is approximately 0.3342.
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Identify the surface with the given vector equation. r(s, t) = (s cos(t), s sin(t), s) circular paraboloid O elliptic cone O hyperbolic paraboloid O plane O circular cone X
The surface with the given vector equation, r(s, t) = (s cos(t), s sin(t), s), is a circular cone.
The vector equation r(s, t) = (s cos(t), s sin(t), s) represents a surface in three-dimensional space. Let's analyze the equation to determine the nature of the surface.
In the equation, we have three components: s, cos(t), and sin(t). The presence of s indicates that the surface expands or contracts radially from a central point. The trigonometric functions cos(t) and sin(t) determine the angle at which the surface extends in the x and y directions.
By observing the equation closely, we can see that as s increases, the radius of the surface expands uniformly in all directions, while the height remains constant. This behavior is characteristic of a circular cone. The circular base of the cone is defined by s cos(t) and s sin(t), and the vertical component is determined by s.
Therefore, the surface described by the vector equation r(s, t) = (s cos(t), s sin(t), s) is a circular cone.
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the interpretation of the slope is different in a multiple linear regression model as compared to a simple linear regression model. t or f
True. the interpretation of the slope is different in a multiple linear regression model as compared to a simple linear regression model.
what is slope in statistics?The slope and intercept of a line reveal the steepness of the line and the location in which it intersects an axis. The slope and intercept of the logistic relationship of the two variables can be utilized to get the average change rate. The ratio of a change in the variable y to the rise in the x component is known as the the line's slope.
Briefing:Y = a + bX, where X seems to be the mediating variable and Y is the response variable, is the equation of a linear regression line. A is the intersection (the result of y for x = 0), and b is the line's slope.
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-3a<-5,if a=2 please help I do not know the answer to the question.
Thr solution to the inequality - 3a < -5 is -6 < -5. This can be written as negative 6 less than negative 5
How to solve inequality?- 3a < -5
if a = 2
- 3a < -5
substitute into the inequality
= -3(2) < -5
= -6 < -5
Hence, the solution to the given inequality when a = 2 is negative 6 less than negative 5
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Helpppppppppppppp meeeeeeeeee
Answer:
x= - 2
Step-by-step explanation:
(2x+8)-4(2x-2)=28
2x+8-8x+8=28
-6x+16=28
-6x=12
x= -2
What is the 2 widths??
Answer:
the two widths are +50 and +40
Step-by-step explanation:
Answer:
W = 50 and 40
(-90+√100)/2 = 40
and
(-90-√100)/2 = 50
Step-by-step explanation:
Hope it helps
PLEASEEE HELP 25 points
Answer:
slope= 1/10x and the slope represents the increase of the rental cost after x miles driven.
Step-by-step explanation:
i hope this helps :)