Steel: σs = p/A_s; Brass: σb = p/A_b; Copper: σc = p/A_c , where A_s, A_b, A_c are the areas of the steel, brass, and copper, respectively.
To calculate the tensile stresses in the steel, brass, and copper due to the force p, we use the formula: σ = p/A, where σ is the tensile stress and A is the area of the material. For the steel, the area is A_s, so the tensile stress σs is equal to p divided by A_s. For the brass, the area is A_b, so the tensile stress σb is equal to p divided by A_b. Finally, for the copper, the area is A_c, so the tensile stress σc is equal to p divided by A_c. Therefore, the tensile stresses in the steel, brass, and copper due to the force p can be calculated using the formula σ = p/A, where A is the area of the material.
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A family needs to build fencing around their rectangular home and square swimming pool, depicted below.
A rectangle labeled home has its right side labeled (2 + 5 x) yards and its bottom side labeled (3 + 10 x) yards. The square, labeled pool, is smaller than the rectangle. One of its sides is labeled (2x) yards.
The total amount of fencing they need can be written as
x + 10.
If x = 5;
The family needs
yards of fencing for their home.
The family needs
yards of fencing for their
The total fencing they required = 38x + 10.
The family needs yards of fencing of the home = 160 yards
The family needs yards of fencing of the pool = 40 yards
What is the perimeter?Perimeter is a mathematical term, which means total outer boundary of a figure, we define it only for two dimensional figures.
Perimeter = Sum of length of the all the sides
Perimeter of a rectangle = 2(length + width)
Perimeter of a square = 4(side length).
Given that,
A rectangle labeled home has its right side labeled (2 + 5 x) yards
And bottom side labeled (3 + 10 x) yards
Perimeter for the rectangular fencing of the home = 2(3 + 10x + 2 + 5x) = 2(15x + 5) = 30x + 10
Perimeter for the square fencing of the pool = 4(2x) = 8x
The total amount of fencing they need = 30x + 10 + 8x = 38x + 10.
If x = 5, then:
Perimeter for the rectangular fencing of the home = 30x + 10 = 30(5) + 10 = 160 yards
Perimeter for the square fencing of the pool = 4(2x) = 8x = 8(5) = 40 yards.
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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 red.
Spinner divided evenly into eight sections with three colored blue, one red, two purple, and two yellow.
Determine the theoretical probability of the spinner not landing on blue, P(not blue).
0.375
0.625
0.750
0.875
The theoretical probability of the spinner not landing on blue is 0.625.
What is probability?Probability is a way to gauge how likely something is to happen. According to the probability formula, the likelihood that an event will occur is equal to the proportion of positive outcomes to all outcomes. The probability that an event will occur P(E) is equal to the ratio of favorable outcomes to total outcomes.
Given A spinner with repeated colors numbered from 1 to 8 is shown,
total outcome = 8
a favorable outcome for blue = 3
a favorable outcome for red = 1
a favorable outcome for purple = 2
a favorable outcome for yellow = 2
probability = favorable outcome/total outcome
P(blue) = 3/8
P(blue) = 0.375
P(not blue) = 1 - P(blue)
P(not blue) = 1 - 0.375
P(not blue) = 0.625
Hence option B is correct.
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20% of Aussies have blue
eyes. If 4 Aussies in a play
group have blue eyes, how
many Aussies are in the
group?
Answer:
20 Aussies
Step-by-step explanation:
20% times 5 = 100%
4 times 5 = 20 Aussies
So, there are 20 Aussies in a group.
Answer:
20
Step-by-step explanation:
4/20%
4/[tex]\frac{2}{10}[/tex]
4 x [tex]\frac{10}{2}[/tex] = [tex]\frac{40}{2}[/tex] = 20
PLEASE HELP!!!!! ASAP
Answer: It should be you lost 2.8 million dollars
Step-by-step explanation:
Can anyone help me in this question?
Answer:
Step-by-step explanation:
all angles of a triangle equals to 180
80+40= 120
x=180-120
x=60
How to convert 165 cm to feet?
To convert 165 cm to feet we get 5 feet and 4.96063 inches.
How do you convert centimetres to feet using a formula?Applying the equation feet = height in cm * 0.0328 will make this task simple. To convert 170 cm to feet, for instance, you would need to multiply 170 by 0.0328084. 5.58 feet are equal to 0.0328084 * 170.Follow the steps below to translate length from centimetres to feet with inches: Step 1: Converting from centimetres to inches Subtract 2.54 from the length value. Step 2: To get the value in feet, divide the value from Step 1 by 12.Therefore, we must divide the specified length by 30.48 since one foot is equivalent to 30.48 centimetres.1 cm is equivalent to 0.0328084 ft or 1/30.48 of a foot.To learn more about feet refer to:
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the recursive formula for 3, -15, 75, -375,...
Answer:
Step-by-step explanation:
This is an arithmetic sequence with a common difference of -12. To find the recursive formula, let's start by finding a general formula for the nth term.
Let a be the first term (3 in this case) and d be the common difference (-12 in this case). The nth term of the sequence can be found using the formula:
an = a + (n-1)d
Using this formula, the first four terms of the sequence are:
a1 = a + (1-1)d = 3 + (1-1)(-12) = 3
a2 = a + (2-1)d = 3 + (2-1)(-12) = 3 - 12 = -9
a3 = a + (3-1)d = 3 + (3-1)(-12) = 3 - 24 = -21
a4 = a + (4-1)d = 3 + (4-1)(-12) = 3 - 36 = -33
So, the sequence is: 3, -9, -21, -33, ...
We can now use this information to write the recursive formula for the sequence:
an = a(n-1) + d
So, for the sequence 3, -9, -21, -33, ... the recursive formula is:
an = an-1 + (-12)
This formula tells us how to find the nth term of the sequence given the (n-1)th term. The sequence starts with the first term a1 = 3 and the common difference is d = -12. By repeatedly applying the formula, we can find the values for the subsequent terms in the sequence.
the times for runners is this marathon has all been recoded and posted accurately the only problem is we can't tell who won can you figure out the times to see who came in first second and so on A1-2 hours 120, minutes 60 second brad-3 hours, 180 minutes, 120 second courtney-300 minutes, 333 seconds edgar-1 hour, 190 minutes filomena-2 hours, 180minutes, 1 second.
The required order of who came in the first second and so on the place is A1, Edgarr, Filomena, Courtney, and Brad respectively.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Time is taken by A1 to finish the marathon in seconds
Total = 2 hours * 60 minutes/hour * 60 seconds/minute +120 minutes * 60 seconds/minute + 60 seconds
Total = 14,560 seconds
Similarly,
Brad: takes 21,720 seconds
Courtney: takes 18,333 seconds
Edgar: takes 14,800 seconds
Filomena: takes 17,601 seconds
Comparing the total times, we can see that the order of the runners is:
A1 with 14,560 seconds
Edgar with 14,800 seconds
Filomena with 17,601 seconds
Courtney with 18,333 seconds
Brad with 21,720 seconds
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60 Points!! ASAP 1 QUESTION NEED HELP WITH PROBABILITY, NO SPAMS OR LINKS!!!
DON'T FORGET THE FORMULA FOR THE AREA IS A=∏ R^2
Answer:
can i see the question then ill solve it?
Step-by-step explanation:
A rectangle has a perimeter of 18cm. The length and the width are both whole numbers. The length is always greater than the width. Complete the table to show all the possible lengths and widths of the rectangle.
Therefore , the solution of the given problem of rectangle comes out to be there are only four values for this circumstance.
What is a rectangle?A rectangle is just a cube with quartet right angles in the Euclidean plane. It is also known as a quadrant that appears to have equal angles, or an equiangular quadrilateral. A straight angle is an additional alternative for the parallelogram. A square has four sides that are the same length. A quadrilateral with four 90° vertices and four equal sides is rectangular in shape.
Here,
Given :
=> Perimeter = 18cm
the length and width are of whole numbers,
The length is always greater than the width:
Let x be the length and y be the width,
using
=> 2x+2 y = 18
=> x =8 , y =1
=> x =7 , y =2
=> x= 6 , y =3
=> x = 5 , y =4
Thus , it can be the only the value for length where length is greater than the width.
Therefore , the solution of the given problem of rectangle comes out to be there are only four values for this circumstance.
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what exponent makes the following expression true? 3x=e
The exponent that makes the equation 3^x = e true is x = log(e) / log(3).
A mathematical function called an exponential function is applied in numerous instances in the real world. It is mostly used to calculate investments, model populations, and do other tasks like determining exponential growth or decay.
x = log(e) / log(3) is the exponent that ensures the truth of the equation 3^x = e, where log is the natural logarithm.
In general, if y = logb(x) then x = b^y. The natural logarithm (base e) is a special logarithm that helps us solve exponential equations.
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Part A: Create a fifth-degree polynomial in standard form. How do you know it is in standard form? (5 points)
Part B: Explain the closure property as it relates to addition of polynomials. Give an example. (5 points)
(10 points)
The fifth-degree polynomial in standard form is [tex]2x^5+ 5x^4+ x^3+ 3x^2+ 9x+16[/tex]. The polynomial is in the standard form because the powers of the terms are given in decreasing order.
[tex]2x^5+ 5x^4+16[/tex] + ([tex]x^5+ 2x^4+11[/tex]) = [tex]3x^5+ 7x^4+17[/tex]
Part A:
The degree of the polynomial is the highest power of the terms of the polynomial.
For example 3x³ + x² + 2x is a polynomial of 3rd degree because the highest power of the terms given is 3.
As we need a polynomial of 5th degree the highest power will be 5.
[tex]2x^5+ 5x^4+ x^3+ 3x^2+ 9x+16[/tex]
The above polynomial is in the standard form because the powers of the terms are given in decreasing order. The first term has the highest power and so on.
Part B:
Suppose we have 2 polynomials
[tex]2x^5+ 5x^4+16[/tex] and [tex]x^5+ 2x^4+11[/tex]
When the closure property of addition is applied
[tex]2x^5+ 5x^4+16[/tex] + ([tex]x^5+ 2x^4+11[/tex])
= [tex]2x^5+ 5x^4+16[/tex] + [tex]x^5+ 2x^4+11[/tex]
= [tex]3x^5+ 7x^4+17[/tex]
The coefficients are changed because of addition.
The sign will not be changed due to the addition and like terms are added to get the answer.
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a vending machine has a total of 41 chocolate bars and bags of pretzels the number of chocolate bars is one less than twice the number of bags of pretzels. how many chocolate bars are in the vending machine
There are 27 chocolate bars and 17 Pretzels in the vending machine
What is an equation?An equation is an expression showing the relationship between two or more numbers and variables. An equation can either be linear, quadratic, cubic and so on depending on the degree.
Let x represent the number of chocolate bars and y represent the number of pretzels
The vending machine has a total of 41 chocolate bars and bags of pretzels, hence:
x + y = 41 (1)
The number of chocolate bars is one less than twice the number of bags of pretzels, hence:
x = 2y - 1
x - 2y = -1 (2)
From both equations:
x = 27, y = 14
There are 27 chocolate bars in the vending machine
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an urn contains n balls numbered 1, 2, . . . , n. we remove k balls at random (without replace- ment) and add up the numbers of all remaining balls. find the mean and variance of the total sum.
The mean of the total sum of the balls remaining is (n-k)(n+1)/2 and the variance of the total sum of the balls remaining is k(n-k)(n+1)/6
The mean of the total sum of the balls remaining in the urn is calculated by finding the average of each number of the remaining balls and summing them up. To find the variance, we use the formula for the variance of a discrete uniform distribution, which states that the variance is equal to the range of the distribution squared divided by 12. In this case, the range is n-k, since we have removed k balls, and the number of remaining balls will range from 1 to n-k.
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Determine whether the given statements are equivalent and why.a) If she attends the meeting, she will become the secretary.b) If she does not become the secretary, then she did not attend the meeting.
No, the statements a) If she attends the meeting, she will become the secretary b) If she does not become the secretary, then she did not attend the meeting are not equivalent.
The statement "a" says that if she attends the meeting, then she will become the secretary. This is a sufficient condition for her to become the secretary.
The statement "b" says that if she does not become the secretary, then she did not attend the meeting. This is a necessary condition for her not attending the meeting.
So, while the statements are related, they don't represent the same relationship between the events of attending the meeting and becoming the secretary.
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Describe the pattern that you see. In your description, include the shapes that create the pattern. You can also mention colors. What is the first term (how does the pattern start)? How does the pattern change with each term? What would the next term in the sequence (pattern) be?
The next term in the given pattern is 36.
What is pattern of numbers?A recurring arrangement of numbers, forms, colours, and other elements constitutes a pattern in mathematics. The Pattern can be connected to any kind of occasion or thing. When a group of numbers are arranged in a particular way, the arrangement is referred to as a pattern. Patterns can also occasionally be referred to as a series.
The number of squares in the given pattern is as follows is 9, 16, 25,....
So, the pattern is 3², 4², 5², 6², 7², 8²,.....
9, 16, 25, 36, 49, 64,....
Hence, the next term in the given pattern is 36.
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50 points and brainiest PLS DO MY HOMEWORK BY THURSDAY FEBRUARY 2ND
Sameera predicted that she would sell 38 blankets, but she actually sold 28 blankets. Which expression would find the percent error? Use the table below to help answer the question. Percent Error Item Approximate Value Exact value Error Absolute error Ratio Percent error Blankets 38 28 10 10 Start Fraction 10 over 38 End Fraction (100) Start Fraction 10 over 28 End Fraction Start Fraction 10 over 28 Infraction (100) Start Fraction 10 over 38 End Fraction
The expression that would find the percent error is:
(38 - 28) / 38 x 100 = 26%
What is a percentage?The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
Sameera predicted that she would sell 38 blankets.
Actual sold 28 blankets.
Now,
Percentage error.
= (38 - 28) / 38 x 100
= 10/38 x 100
= 26%
Thus,
The percentage error is 26%.
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On April 14, Mikos Souvakis borrowed $100,000 to remodel
his restaurant kitchen with a single-payment loan at 10. 5% ordinary
interest. If his loan's maturity value was $104,375, when does Mikos
have to pay it back?
and
Mikos is required to repay it on September 13 of the same year based on simple interest.
What is Basic Interest equation?When there is only one compounding every time period, simple interest is applied.
Following t years, the amount of money is predicted by:
A(t) = A(0) (1 + rt)
That where:
The initial amount is A(0).
The interest rate in decimal form is r.
In this issue:
The starting sum is A(0) = 100000.
R = 0.105 is the interest rate.
The maturity value is 104375 for A(t).
Therefore, we must find t; as a result,
A(t) = A(0)(1 + rt)
104375 = 100000(1 + 0.105t)
1 + 0.105t = 104375 / 100000
1 + 0.105t = 1.04375
0.105t = 1.04375
t = 0.04375 / 0.105
t = 0.4166
The time in years, then in days, is as follows:
On September 13, which is 152 days after April 14 (0.4166 x 365).
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Tom and his best friend, Edward, are seeking to join a gym. Tom saw on television that
Platinum Gym was having a grand opening in a few months and is considering a
membership there. Platinum Gym charges a one-time registration fee of $60, and
membership is $20 monthly. Tom's best friend, Edward, says he plans to join Super Fit
because it only charges $10 monthly with a one-time registration fee of $150.
(a) Write an expression to represent the membership cost of Platinum Gym for x
months.
(b) Write an expression to represent the membership cost of Super Fit for x months.
(d) Is there a membership period for which Tom and Edward would pay the same
amount? If so, how long would this membership be and how much would it cost? Show
your work (2 points for showing work, 1 points for answer).
The expression to represent the membership cost of Platinum Gym for x
months is y = 60 + 20x.
The expression to represent the membership cost of Super Fit for x months is y = 150 + 10x.
Yes, there is a membership period where they will pay the same amount.
The membership period will be 9 months and the cost is 240 dollars.
How to represent a situation with an equation?Tom and his best friend, Edward, are seeking to join a gym. . Tom saw on television that Platinum Gym was having a grand opening in a few months and is considering a membership there.
Platinum Gym charges a one-time registration fee of $60, and membership is $20 monthly.
Tom's best friend, Edward, says he plans to join Super Fit because it only charges $10 monthly with a one-time registration fee of $150.
a.
The expression to represent the the membership cost of Platinum Gym for x months is as follows:
y = 60 + 20x
where
y = costx = number of monthb.
The expression to represent the membership cost of Super Fit for x months is as follows:
y = 150 + 10x
c.
The membership period for them to pay the same amount can be calculated as follows:
60 + 20x = 150 + 10x
60 - 150 = 10x - 20x
-90 = -10x
x = 90 / 10
x = 9 months
Therefore, the period is 9 months
y = 150 + 10(9)
y = 150 + 90
y = 240 dollars
Therefore, at 9 month they will pay 240 dollars.
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Simon makes 30 cakes. He gives of the cakes to Sali. 5 He gives 10% of the 30 cakes to Jane. What fraction of the 30 cakes does he have left?
Answer:Simon gives 5 cakes to Sali and 30 x 10% = 3 cakes to Jane, so he gives out a total of 5 + 3 = 8 cakes.
Therefore, Simon has 30 - 8 = 22 cakes left.
So, the fraction of the 30 cakes that Simon has left is 22/30
Step-by-step explanation:
Curved urface area of a cone i 308 cm2 and it lant height i 14 cm. Find the volume
Curved surface area of a cone is 308 cm² and it slant height is 14 cm. So the cone volume is 343√3/3 π cm³.
Determine the cone volumeThese are the specified parameters:
Curved surface area of a cone (A) = 308 cm²
Slant height (s) = 14 cm
The length of the radius of the base of the cone
A = π r s
308 = 22/7 × r × 14
308 = 44 r
r = 308/44
r = 7 cm
The cone height
h² = s² - r²
= 14² - 7²
= 196 - 49
= 147
h = √147
h = 7√3 cm
Cone volume
V = 1/3 π r² h
= 1/3 × π × 7 × 7 × 7√3 cm³
= 343√3/3 π cm³
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You drive 60 kilometers per hour. What is your speed in miles per hour?
Answer:
Rounded it's 37 mph but the exact answer is 37.28 mph
when you are looking at a graph, you can say that average? why?
The average line shows the average of the data for a particular graph by drawing a line across the chart at the mean value points on the y-axis. By default, the average line label is displayed as a combination of line value and line title.
Definition of GraphicsGraph is a collection of data from several tables that will be presented or also displayed in the form of images, such as squares, circles, tubes, triangles, beams, cones or others. Graphics are also usually also interpreted as a framework or image that will be used to create a visualization object from data in tables with the aim of being able to provide information about a data from the material presenter to the recipient of the material.
In addition, graphs are also often interpreted as a description of the ups and downs of an existing data, or depicted by lines or pictures. The data used to create graphics can be in the form of numbers, letters, symbols, pictures, symbols, sayings, or paintings.
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consider the following. (if an answer does not exist, enter dne.) g(x) = x2 − 3x − 18 x2 − 25 (a) state the domain of the function. (enter your answe
The Domain for the function g(x) = (x² - 3x - 18)/(x² − 4) is , all Real vales except x = 2 and x = -2 .
The Domain of a function is the set of all possible input values (values of x) for which the function is defined and produces a valid output (value of y).
For the function g(x) = (x² - 3x - 18)/(x² − 4), the only restriction on the domain is the denominator (x² − 4) cannot be equal to 0. This is because division by zero is undefined.
So, the domain of the function g(x) is all real numbers except x = ±2, because if we substitute x = 2 or -2 , the denominator becomes 0 and hence undefined .
Therefore , the domain of the function g(x) is {x | x ≠ ±2}.
The given question is incomplete , the complete question is
Consider the following : g(x) = (x² - 3x - 18)/(x² − 4) . state the domain of the function .
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A point charge q is at the center of a spherical shell of radius R carrying charge 2q spread uniformly over its surface. (A) Write an expression for the electric field strength at 1/2 R.
(B) Write an expression for the electric field strength at 2R.
The expression for the electric field strength at 1/2 R is E = 8 * π * k * q * r^2 / (1/2R)^2, and the expression for the electric field strength at 2R is E = 2 * π * k * q * r^2 / (2R)^2.
What is the spherical shell?
In geometry, a spherical shell is a generalization of an annulus to three dimensions. It is the region of a ball between two concentric spheres of differing radii.
(A) Electric field strength at 1/2R:
The electric field strength at a point P due to a charge q located at point O is given by:
E = k * q / r^2
where k is the Coulomb constant, q is the charge at point O, and r is the distance between points P and O.
For a spherical shell of radius R carrying charge 2q spread uniformly over its surface, the electric field at any point inside the shell is zero, since the charges on the shell produce equal and opposite electric field vectors that cancel each other out.
Therefore, the electric field strength at 1/2R is zero.
(B) Electric field strength at 2R:
At a distance of 2R from the center of the spherical shell, the electric field due to the entire shell can be calculated as if all the charge were concentrated at the center of the shell.
The electric field strength at a point P due to a point charge q located at the center of the spherical shell is given by:
E = k * q / r^2
where k is the Coulomb constant, q is the total charge on the shell (2q), and r is the distance between points P and the center of the shell (2R).
So, the electric field strength at 2R is:
E = k * (2q) / (2R)^2 = k * q / R^2
Hence, the expression for the electric field strength at 1/2 R is E = 8 * π * k * q * r^2 / (1/2R)^2, and the expression for the electric field strength at 2R is E = 2 * π * k * q * r^2 / (2R)^2.
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-12b when b=4 please please PLSEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE HELP MEEEE :((((((((
Answer: When b = 4, the value of -12b is -48.
Step-by-step explanation:
When b = 4, the expression -12b can be evaluated as follows:
-12b = -12 * 4 = -48
So, when b = 4, the value of -12b is -48.
Answer:
Step-by-step explanation:
its just -12 times 4 which is -48
Basic Computation: Expected Value and Standard Deviation Consider a binomial experiment with n = 20 trials and p = 0.40. (a) Find the expected value and the standard deviation of the distribution. (b) Interpretation Would it be unusual to obtain fewer than 3 successes? Explain.
0.003 is the expected value and the standard deviation of the distribution.
What does a probability simple definition entail?
A probability is a number that expresses the possibility or likelihood that a specific event will take place.
Both proportions between 0 and 1 and percentages between 0% and 100% can be used to describe probabilities.
Let X shows the random variable corresponding to binomial distribution in the question.
(a)
Expected value of the binomial distribution is
μ = E(X) = ηp = 20 . 040 = 8
and
σ = √np( 1 - p ) = √20 .04.( 1 - 0.40 ) = √4.8 = 2.19
(b)
For a binomial distribution it is unusal to obtain the sucesses the less than μ - 2.5σ and greater than μ + 2.5σ
here r = μ - 2.5σ = 8 - 2.5 . 219 = 2.525
That is for the given binomial distribution it is unusal to obtain the number of successes less than 2.5 or approximately less than 3.
Probability of less than 3 sucesses is
P( X < 3 ) = P( X≤ 2 ) = P(X=0) + P( X = 1 ) + P( X = 2 )
= 2∑k=0 (k²⁰) [tex]( 20 )^{k} ( 1 - 0.4)^{20 - k}[/tex]
= 0.003
It is very low probability.
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thomas collects dimes and quarters in his change jar. if he has 10 more dimes than quarters, and the total amount of money in the jar is $34.25, find the number of each type of coin in the jar.
The number of each type of coin in the jar is 76 quarters and 83 dimes.
What is meant by Equation?A mathematical statement called an equation demonstrates the equality of two mathematical expressions.An expression, often known as a mathematical expression, is a finite collection of symbols that are well-formed in accordance with context-dependent principles.In mathematics, an equation is a relationship between two expressions that is expressed as an equality on each side of the equal to sign. An equation would be 3y = 16, for instance.Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.Equations can be categorized into one of the following three categories depending on their degree:Linear equationQuadratic equationCubic equationGiven data :
Thomas collects dimes and quarters in his change jar.
If he has 7 more dimes than quarters, and the total amount of money in the jar is $27.30.
Let, x be the number of the dimes.
And y be the number of quarters.
If he has 7 more dimes than quarters,
y = x + 7
The total amount of money in the jar is $27.30.
0.25x + 0.10y = 27.30
Substitute the value of y in equation 2
0.25x + 0.10(x + 7) = 27.30
0.25x + 0.10x + 0.7 = 27.30
0.35x = 27.30 - 0.7
0.35x = 26.6
x = 26.6 / 0.35 = 76
Substitute the value of x in equation 1
y = x + 7
y = 76 + 7 = 83
Hence, there are 76 quarters and 83 dimes in the jar.
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find the slope-intercept equation of the line that has the given characteristics. slope 9 and y-intercept (0,3)
The slope-intercept equation of the line is y= 9x + 3
The line with m as the slope, m and c as the y-intercept is the graph of the linear equation y = mx + c. The values of m and c are real integers in the slope-intercept form of the linear equation.
The slope, m, is a measure of how steep a line is. Sometimes, the gradient of a line is referred to as its slope. A line's y-intercept, ab, denotes the y-coordinate of the location where the line's graph crosses the y-axis.
Slope-intercept form of an equation: y=mx+b, where m is the slope (in this case, 9) and b is the y-intercept (in this case, the 3 from the point 0, 3)
y= 9x + 3 ( Plug in 9 for the m (slope) and 3 for the b (y-intercept))
Thus, the slope-intercept equation of the line is y= 9x + 3
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