Answer:
Step-by-step explanation:
you have 22 bucks and your mom took 2
22-2=20
My Answer:
22-2= 20, right? She can't drink anymore wine if you (shown as "i") used the remaining 20$. Tell me if this makes sense. No wine (none) is consumed if you have no money left.
Answer from Artificial Intellegence (to get another view on the question so you can figure out the best answer):
If you had 22 bucks and your mom took 2 dollars for her weekly wine tasting, you would have 20 dollars left. If you have 0 dollars left, this means your mom spent all of the remaining 20 dollars on wine. Assuming each wine bottle costs the same, we can divide the remaining 20 dollars by the cost of one wine bottle to find how many wine bottles your mom bought for her weekly wine tasting. Without knowing the exact cost of one wine bottle, we can't determine the exact number of wine bottles your mom drank.
Find the missing dimension of the prism.
Volume = 60 in ³
Height = 4 in
Width = 2.5 in
Length = ?
What is the length?
7in
4in
6 in.
5 in.
Answer:
volume
Step-by-step explanation:
Answer:
1.5 in
Step-by-step explanation:
To find the missing dimension (length), we can use the formula for the volume of a prism:
Volume = Base Area x Height
We know that the volume of the prism is 60 in³ and the height is 4 in. We also know that the base of the prism is a rectangle with a width of 2.5 in.
Base Area = Length x Width
We can rearrange the formula for volume to solve for the missing dimension:
Length = Volume / (Base Area x Height)
Base Area = Width x Length
Plugging in the given values, we get:
Base Area = 2.5 in x Length
Base Area x Height = 10 in²
Length = 60 in³ / (10 in² x 4 in)
Length = 1.5 in
Therefore, the missing dimension (length) of the prism is 1.5 inches.
4C. Construct orthonormal basis using Gram-Schmidt orthogonalization process from the set of linearly independent vectors {v1 = (1, 0, 1), v2 = (1, 0, -1), V3 = (0,3,4)}. =
The orthonormal basis constructed using the Gram-Schmidt orthogonalization process from the set of linearly independent vectors {v1 = (1, 0, 1), v2 = (1, 0, -1), V3 = (0,3,4)} is {u1 = (1/√2, 0, 1/√2), u2 = (0, 0, -1), u3 = (0, 1, 0)}.
The Gram-Schmidt orthogonalization process is a method for constructing an orthonormal basis from a set of linearly independent vectors. In this case, we are given the set of linearly independent vectors {v1 = (1, 0, 1), v2 = (1, 0, -1), V3 = (0,3,4)}. We will use the Gram-Schmidt orthogonalization process to construct an orthonormal basis from this set.
Step 1: The first vector in the orthonormal basis is simply the normalized version of the first vector in the original set. So, we have u1 = v1/||v1|| = (1, 0, 1)/√2 = (1/√2, 0, 1/√2).
Step 2: The second vector in the orthonormal basis is the normalized version of the projection of the second vector in the original set onto the orthogonal complement of the first vector in the orthonormal basis. So, we have u2 = (v2 - (v2·u1)u1)/||(v2 - (v2·u1)u1)|| = ((1, 0, -1) - ((1, 0, -1)·(1/√2, 0, 1/√2))(1/√2, 0, 1/√2))/||((1, 0, -1) - ((1, 0, -1)·(1/√2, 0, 1/√2))(1/√2, 0, 1/√2))|| = (0, 0, -√2)/√2 = (0, 0, -1).
Step 3: The third vector in the orthonormal basis is the normalized version of the projection of the third vector in the original set onto the orthogonal complement of the first two vectors in the orthonormal basis. So, we have u3 = (v3 - (v3·u1)u1 - (v3·u2)u2)/||(v3 - (v3·u1)u1 - (v3·u2)u2)|| = ((0, 3, 4) - ((0, 3, 4)·(1/√2, 0, 1/√2))(1/√2, 0, 1/√2) - ((0, 3, 4)·(0, 0, -1))(0, 0, -1))/||((0, 3, 4) - ((0, 3, 4)·(1/√2, 0, 1/√2))(1/√2, 0, 1/√2) - ((0, 3, 4)·(0, 0, -1))(0, 0, -1))|| = (0, 3, 0)/3 = (0, 1, 0).
Therefore, the orthonormal basis constructed using the Gram-Schmidt orthogonalization process from the set of linearly independent vectors {v1 = (1, 0, 1), v2 = (1, 0, -1), V3 = (0,3,4)} is {u1 = (1/√2, 0, 1/√2), u2 = (0, 0, -1), u3 = (0, 1, 0)}.
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15 toys were removed from a box containing 25 toys what fraction of the toys for removed
4 : Based on the data, what is the probability that a student scored between 40 and 70 on the test?
5: Based on the data, what is the probability a student scored higher than 50 on the test
I've already gotten my mean and standard deviation, mean being 55, and my SD being 16.
The data : 23, 25, 33, 34, 38, 40, 42, 48, 50, 51, 53, 57, 60, 62, 63, 66, 67, 68, 70, 71, 72, 74, 74, 75, 80
Could use some help asap, thanks!
The required,
(4) Probability that a student scored between 40 and 70 on the test is approximately 0.6514.
(5) The probability that a student scored higher than 50 on the test is approximately 0.6255.
What is the Z-score?A Z-score is stated as the fractional model of data point to the mean using standard deviations.
Here,
To calculate the probability that a student scored between 40 and 70 on the test, we need to find the z-scores for 40 and 70 and then use a standard normal table or calculator to find the area between those z-scores.
The z-score for 40 is:
z = (40 - 55) / 16 = -0.94
The z-score for 70 is:
z = (70 - 55) / 16 = 0.94
Using a standard normal table or calculator, the area between these two z-scores is approximately 0.6514.
Therefore, the probability that a student scored between 40 and 70 on the test is approximately 0.6514.
To calculate the probability that a student scored higher than 50 on the test, we again need to find the z-score for 50 and use a standard normal table or calculator to find the area above that z-score.
The z-score for 50 is:
z = (50 - 55) / 16 = -0.31
Using a standard normal table or calculator, the area above this z-score is approximately 0.6255.
Therefore, the probability that a student scored higher than 50 on the test is approximately 0.6255.
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Find the equation of the line passing through the point P
(2,1,-1) and orthogonal to the plane 2x-y+3z=10? [use X=P+TD
vector, X=x,y,z]
This is the equation of the line passing through the point P (2,1,-1) and orthogonal to the plane 2x-y+3z=10.
The equation of the line passing through the point P (2,1,-1) and orthogonal to the plane 2x-y+3z=10 can be found using the X=P+TD vector equation. In this equation, X represents the point on the line, P represents the point through which the line passes, T represents a scalar parameter, and D represents the direction vector of the line.
To find the direction vector of the line, we can use the normal vector of the plane, which is given by the coefficients of the x, y, and z terms in the equation of the plane. The normal vector of the plane is (2,-1,3).
Since the line is orthogonal to the plane, the direction vector of the line will be parallel to the normal vector of the plane. Therefore, the direction vector of the line is also (2,-1,3).
Now, we can plug in the values of P and D into the X=P+TD equation to find the equation of the line:
X = (2,1,-1) + T(2,-1,3)
X = (2+2T, 1-T, -1+3T)
The equation of the line in parametric form is:
x = 2+2T
y = 1-T
z = -1+3T
This is the equation of the line passing through the point P (2,1,-1) and orthogonal to the plane 2x-y+3z=10.
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The formula S = 4x() can be used to find the surface area of a sphere, where V represents its volume. A regulation
basketball has a volume of about 456 cubic inches. How much leather is needed (surface area) to make a regulation basketball? Round
your answer to the nearest tenth.
The surface area to the nearest tenth value is somewhere around 285.9 cm². We can find it in the following manner,
Given the formula is S= 4πr²
And the volume of the regulation basketball is given as 456cm³
Since we know the formula for sphere is (4/3)πr³ we can find the radius from the volume of formula
V= (4/3)πr³
456cm³= (4/3)πr³
456= (4/3)(22/7)r³
r= 4.77 cm
Therefore the radius come out to be 4.77 cm
Now to find the surface area according to the first formula that is S= 4πr² where S represent surface area
S= 4πr²
S= 4 x (22/7) x (4.77)²
S= 285.92 cm²
Therefore the surface area to the nearest tenth value is somewhere around 285.9 cm²
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Determine the cost of the points and the new interest rate for each loan amount and
interest rate. Assume each point costs 1% of the loan amount.
a. $250,000, original APR 6.1%, 2 points with a .2% discount per point.
b. $260,000, original APR 3.4%, 3 points with a .6% discount per point.
c. $230,000, original APR 5.6%, 1 point with a .51% discount per point.
a. The new interest rate for the loan of $250,000 with 2 points is 5.9%, and the cost of points is $5,000.
b.
The new interest rate for the loan of $260,000 with 3 points is 2.8%, and the cost of points is $7,800.
c.
The new interest rate for the loan of $230,000 with 1 point is 5.09%, and the cost of points is $2,300.
What is interest rate?An interest rate is described as the amount of interest due per period, as a proportion of the amount lent, deposited, or borrowed.
For part a.
Loan amount = $250,000
Original APR = 6.1%
2 points with a .2% discount per point
Cost of one point = 1% of loan amount = 0.01 x $250,000 = $2,500
Discount per point = 0.2% of loan amount = 0.002 x $250,000 = $500
Total cost of 2 points = 2 x $2,500 = $5,000
Effective interest rate after discount = Original APR - Discount per point = 6.1% - 0.2%
= 5.9%
for part b.
Loan amount = $260,000
Original APR = 3.4%
3 points with a .6% discount per point
Cost of one point = 1% of loan amount = 0.01 x $260,000 = $2,600
Discount per point = 0.6% of loan amount = 0.006 x $260,000 = $1,560
Total cost of 3 points = 3 x $2,600 = $7,800
Effective interest rate after discount = Original APR - Discount per point = 3.4% - 0.6%
= 2.8%
for part c.
c. Loan amount = $230,000
Original APR = 5.6%
1 point with a .51% discount per point
Cost of one point = 1% of loan amount = 0.01 x $230,000 = $2,300
Discount per point = 0.51% of loan amount = 0.0051 x $230,000 = $1,173
Total cost of 1 point = 1 x $2,300 = $2,300
Effective interest rate after discount = Original APR - Discount per point = 5.6% - 0.51%
= 5.09%
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The height of a pole is 27 feet. A snake is curled up at a distance of 20 ft from the foot of
the pole. The snake looks at the top most point of the pole. Find the angle of elevation
made by the snake and the top of the pole. Round to the nearest tenth of a degree.
The angle of elevation is _____ degrees.
Help
The angle of elevation made by the snake is 53.5 degrees.
How to find the angle of elevation?The height of a pole is 27 feet. A snake is curled up at a distance of 20 ft from the foot of the pole.
The snake looks at the top most point of the pole. The angle of elevation made by the snake and the top of the pole is as follows:
Therefore, the situation forms a right angle triangle.
Let's find the angle of elevation.
tan ∅ = opposite / adjacent
where
∅ = angle of elevationTherefore,
tan ∅ = 27 / 20
∅ = tan⁻¹ 1.35
∅ = 53.471144633
∅ = 53.5 degrees
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What is the ratio of perimeters for two regular pentagons with areas of 18 cm² and 50 cm²?
18:50
09:25
15:25
O 3:5
Answer:
Step-by-step explanation:its 18.50
In the following figure, AE and BD are segments.
1. ABC and CDE are similar. How do we know this?
2. What is the scale factor of the similarity transformation that takes
ABC to CDE?
3. What is the value of the ratio of the area of ABC to the area of CDE? Explain how you
know.
4. If the area of ABC is 40 cm² What is the area of CDE?
According to the image we can infer that both figures are similar. Their ratio is 11:4; their scale factor is 1:2 and their areas are: 40cm² and 14.54cm²
How do we know that the two figures are similar?We know that the two figures are similar because they have the same angles. Therefore they are similar. In this case it can be inferred that they have a scale factor close to half because the small triangle represents more or less half of the large triangle.
The value of the ratio can be found taking as reference the measurements of the base of the triangles. Then it would be a ratio of 11:4, that is to say that for every 11cm of large triangle, the small one has a 4cm base.
Finally, if the area of the large triangle is 40cm², the area of the small triangle would be the following:
11cm base = 40cm²
4 cm base = cm²
4 * 40 / 11 = 14.54cm²
1. ABC and CDE are similar. How do we know this?Yes they are similar because they have the same angle values.
2. What is the scale factor of the similarity transformation that takes ABC to CDE?According to the graph we can infer that the scale factor of the similarity transformation that takes ABC to CDE is 1:2.
3. What is the value of the ratio of the area of ABC to the area of CDE? Explain how you know.According to the information, we can infer that the ratio of the area of both triangles is 11:4 because those values correspond to their base length.
4. If the area of ABC is 40 cm² What is the area of CDE?if the area of the large triangle is 40cm², the area of the small triangle would be the following:
11cm base = 40cm²
4 cm base = cm²
4 * 40 / 11 = 14.54cm²
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A country pledges to reduce its annual C*O_{2} emissions by 2% per year . If the emissions in 2022 are 3,290 Mt (metric- megatons), what are the maximum allowable emissions in the year 2040 ?
The maximum allowable emissions in the year 2040 for this country is 2,076.4 Mt if they reduce their emissions by 2% per year.
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
To calculate the maximum allowable emissions in the year 2040, we need to find the emissions in 2040 if they are reduced by 2% per year from 2022 emissions.
First, we need to calculate the reduction in emissions per year:
2% of 3,290 Mt = 0.02 x 3,290 Mt = 65.8 Mt
This means that each year, emissions need to be reduced by 65.8 Mt.
To calculate the emissions in 2040, we need to know how many years there are between 2022 and 2040:
2040 - 2022 = 18 years
So, the emissions in 2040 will be:
3,290 Mt - (18 x 65.8 Mt) = 2,076.4 Mt
Therefore, the maximum allowable emissions in the year 2040 for this country is 2,076.4 Mt if they reduce their emissions by 2% per year.
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Math question 1 help
The solution of the given System of equations will be (1, 3), and (-2, 9)
What are Systems of equations?Simultaneous equations, a system of equations Two or more equations in algebra must be solved jointly (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a singular solution.
There are four methods for solving systems of equations: graphing, substitution, elimination, and matrices.
Given a system of equations such that,
y = x² -x + 3
y = -2x + 5
Subtracting both equations,
-2x+ 5 - x² + x -3 = 0
x² +x -2 = 0
from factorization method
x² +2x -x -2 = 0
x(x +2)-1(x +2) = 0
x = 1, -2
Thus, y = 3 at x = 1
y = 9 at x =-2
So the solution of the given System of equations will be (1, 3), and (-2, 9)
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Amanda is the manager of Gladrags. She just got a new shipment of jeans and is pricing them for the store to make money. Her invoice fo states that the jeans cost her store $20 per pair. Amanda marks the jeans up to sell for $55 per pair. Three weeks later, Amanda sees that selling and puts them on sell for 50% off. Will her store still earn a profit on the jeans, break even, or will the store lose money?
A) The store will break even on the jeans by selling them for the same amount that they bought them for.
B) The store will lose money by selling the jeans for less than they bought them for.
C) The store will still earn a profit on the jeans by selling them for more than they bought them for.
Answer:
Step-by-step explanation: B) The store will lose money by selling the jeans for less than they bought them for.
The answer
What is the solution set of the equation below?
-18=2a-2|1-3a|
Answer:
a = -2
Step-by-step explanation:
-18 = 2a - 2|1-3a|
-18 = 2a - 2 + 6a
-18 = 8a - 2
-16 = 8a
a = -2
Question 2 Consider the following set of vectors, where c is a parameter: A = {(2, 2, 0),(1, 2, c),(0, 0, c),(1, 0, 0)}. a) (1pt) Explain why A is linearly dependent for all values of c. b) (2pts) For c = 0, give a complete geometric description of Span(A). c) (2pts) Find all value(s) of c for which (4, 1, 3) is in Span(A).
We have to, A is linearly dependent for all values of c, the set of all vectors of the form (2a + b + c, 2a + 2b, 0) and the only value of c for which (4, 1, 3) is in Span(A) is c = 1.
a) A is linearly dependent for all values of c because there are more vectors than there are dimensions in the vector space. This means that one of the vectors can be expressed as a linear combination of the other vectors. Specifically, the vector (0, 0, c) can be expressed as a linear combination of the other vectors: (0, 0, c) = c*(2, 2, 0) + 0*(1, 2, c) + 0*(1, 0, 0).
b) For c = 0, the set of vectors A becomes {(2, 2, 0),(1, 2, 0),(0, 0, 0),(1, 0, 0)}. The span of this set of vectors is the set of all linear combinations of these vectors. Since the third vector is the zero vector, it does not contribute to the span. The span of the remaining vectors is the set of all linear combinations of the form a*(2, 2, 0) + b*(1, 2, 0) + c*(1, 0, 0). This is the set of all vectors of the form (2a + b + c, 2a + 2b, 0), which is a plane in R3 that contains the origin and is parallel to the xy-plane.
c) To find all values of c for which (4, 1, 3) is in Span(A), we need to find all values of c for which there exist scalars a, b, and d such that (4, 1, 3) = a*(2, 2, 0) + b*(1, 2, c) + d*(1, 0, 0). This gives us the following system of equations:2a + b + d = 42a + 2b = 1bc = 3We can solve this system of equations to find the values of a, b, and c. From the first equation, we can express d in terms of a and b: d = 4 - 2a - b. Substituting this into the second equation gives us 2a + 2b = 1 - 4 + 2a + b, which simplifies to b = 3. Substituting this value of b back into the third equation gives us 3c = 3, which gives us c = 1. Therefore, the only value of c for which (4, 1, 3) is in Span(A) is c = 1.
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Complete the following sentence. The division (4+3i)/(5-7i) is performed by multi
The division (4+3i)/(5-7i) is performed and the result is (-1/74)+(43/74)i.
The division (4+3i)/(5-7i) is performed by multiplying the numerator and denominator by the complex conjugate of the denominator. In this case, the complex conjugate of (5-7i) is (5+7i).
So, the division can be performed as follows:
(4+3i)/(5-7i) * (5+7i)/(5+7i) = (4+3i)(5+7i)/(5-7i)(5+7i)
Multiplying the numerator and denominator gives:
(20+28i+15i+21i^2)/(25+35i-35i-49i^2)
Simplifying the numerator and denominator gives:
(20+43i-21)/(25+49)
Combining like terms gives:
(-1+43i)/(74)
Finally, dividing the numerator and denominator by 74 gives:
(-1/74)+(43/74)i
So, the division (4+3i)/(5-7i) is performed and the result is (-1/74)+(43/74)i.
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Please help a brother out!!!
Answer:
Just help your mother to wash your dise
At a restaurant, 600 customers were served during a 10-hour period of time. Which graph has a slope that best represents the number of customers that were served per hour at this restaurant?
Answer: The correct answer would be Graph H.
Step-by-step explanation:
Answer:
top right
Step-by-step explanation:
600 per 10 hours is a rate of 60/hour.
You need a graph that has a slope of 60 and includes the point (1, 60).
Answer: top right
Score: 8 Penalty: None Singleton tic Operations on Functions 11:58:12 PM hat f(x)=x^(2)+5x-36 and g(x)=x-4, find f(x)+g(x) an the result as a polynomial in simplest form.
The final answer sum of f(x) and g(x) is [tex]x^2 + 6x - 40[/tex], which is a polynomial in simplest form.
To find the sum of two functions, we simply need to add their respective terms together.
In this case, we have:
f(x) = [tex]x^2 + 5x - 36[/tex]
g(x) = x - 4
So, f(x) + g(x) = [tex](x^2 + 5x - 36)[/tex] +[tex](x - 4) = x^2 + 6x - 40[/tex]
Therefore, the sum of f(x) and g(x) is [tex]x^2 + 6x - 40[/tex], which is a polynomial in simplest form.
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six identical cheese wedges are packaged in a container shaped like a hexagonal prism. The cheese wedges are shaped like triangular prisms. what is the total volume of the cheese box?
Answer: 126
Step-by-step explanation:
The total volume of the cheese box can be given by 3bh × L.
What is a triangular prism?A triangular prism is a pοlyhedrοn made up οf twο triangular bases and three rectangular sides. It is a three-dimensiοnal shape that has three side faces and twο base faces, cοnnected tο each οther thrοugh the edges. If the sides are rectangular, then it is called the right triangular prism else it is said tο be an οblique triangular prism.
The volume of a triangular prism is given by = (1/2) × bh × L
where b = base, h = height and L = length
Six identical cheese wedges are packaged in a container shaped like a hexagonal prism, i.e
⇒ 6 × identical cheese wedges
⇒ 6 × (1/2) × bh × L
Total volume of the cheese box:
= 6 × (1/2) × bh × L
= 6 × (1/2) × bh × L
= 3 × bh × L
= 3bh × L
Thus, The total volume of the cheese box can be given by 3bh × L.
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PLEASE HELP!! Answer the question below
The area of the shape is solved to be 24 square units
How to find the area of the shapeThe area of the shape is solved knowing that area of a triangle is solved using the formula
= 0.5 * base * height
where
base = 12
height = 4
plugging in the values into the formula
= 0.5 * 12 * 4
= 6 * 4
= 24 square units
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PLEASE HELP QUICK!!
Timmy and Susie both work at the Monster Burger. Timmy works for 40 hours and makes 720 dollars. He has been working there longer than Susie who makes only 600 dollars in the same amount of time. Monster Burger employees are given a 50 cent raise a year. How much higher is Timmy's pay rate than Susie's? How much longer had Timmy worked at Monster Burger than Susie?
Answer:
A. Tim's pay rate is $3/hr than Susie's
B. Tim worked 6 years longer than Susie
Step-by-step explanation:
Timmy makes $720 in 40 hrs
=> he makes 720/40 = $18.00/hr
Susie makes $600 in 40 hrs
=> she makes 600/40 = $15.00/hr
So Tim makes 18 - 15 = $3/hr than Susie
50 cent = $0.5
If pay raise is $0.5/yr
=> 3/0.5 = 6 yr
Tim worked 6 years longer than Susie
s=k/t where k is a constant.
which two statements are correct?
A s is directly proportional to t
B s is inversely proportional to t
C s is directly proportional to 1/t
D s is inversely proportional to 1/t
The two statements that are correct include the following:
B. s is inversely proportional to t.
C. s is directly proportional to 1/t.
What is a proportional relationship?In Mathematics, a proportional relationship can be defined as a type of relationship that generates equivalent ratios and it can be modeled or represented by the following mathematical expression:
y = kx
Where:
x and y represents the variables or data points.k represents the constant of proportionality.Additionally, an inverse variation can be modeled by this mathematical expression:
s ∝ 1/t
s = k/t
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Find the average rate of change of f(x)=x^2+3x+1 from x=−5 to x=−3. Simplify your answer as much as possible.
The average rate of change of f(x)=x^2+3x+1 from x=−5 to x=−3 is −5.
The average rate of change of a function f(x) over an interval [a,b] is given by the formula:
average rate of change = (f(b) - f(a)) / (b - a)
In this case, we are given the function f(x)=x^2+3x+1 and the interval [−5,−3], so we can plug in the values into the formula:
average rate of change = (f(−3) - f(−5)) / (−3 - (−5))
First, we need to find the values of f(−3) and f(−5):
f(−3) = (−3)^2 + 3(−3) + 1 = 9 − 9 + 1 = 1
f(−5) = (−5)^2 + 3(−5) + 1 = 25 − 15 + 1 = 11
Now, we can plug these values back into the formula:
average rate of change = (1 - 11) / (−3 - (−5)) = (−10) / 2 = −5
Therefore, the average rate of change of f(x)=x^2+3x+1 from x=−5 to x=−3 is −5.
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13) \( \begin{array}{l}2 x+y=+2 \\ x=\frac{1}{2} y+6\end{array} \) 14) \( x+y=6 \) \[ -2 x+y=-3 \] WRITE EDUATIONS AND EDLVE THE FOLL. DWING APFHICATION APDEUEMS. 15) Mri MBERSHP IN OAMWOOD COUWTHY CL
The solution to the system of equations is (x, y) = (-2, 8).15)Unfortunately, the question is incomplete, and I cannot provide an answer without knowing the complete question.
The two given equations are as follows:2x + y = 2x = (1/2)y + 6To solve the above system of equations, we will use the substitution method. First, we will substitute the value of x from the second equation to the first equation.2(1/2)y + 6 + y = 22.5y + 6 = 2Subtracting 6 from both sides, we get:2.5y = -4Dividing both sides by 2.5, we get:y = -4/2.5y = -8/5Substituting the value of y in the second equation to get the value of x:x = (1/2)(-8/5) + 6Multiplying and simplifying:x = -4/5 + 30/5x = 26/514)The given system of equations is:x + y = 6-2x + y = -3We will use the elimination method to solve the system of equations. Adding both the equations, we get:2y = 32y = 16y = 8Substituting the value of y in any of the equations to get the value of x:x + 8 = 6x = 6 - 8x = -2Therefore, the solution to the system of equations is (x, y) = (-2, 8).15)Unfortunately, the question is incomplete, and I cannot provide an answer without knowing the complete question.
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The diameter of a circle is 32 cm. Find its area to the nearest whole number.
Answer:
804 cm^2
Step-by-step explanation:
The area of a circle is given by the formula:
A = πr^2
where r is the radius of the circle. Since we are given the diameter of the circle, which is 32 cm, we can find the radius by dividing the diameter by 2:
r = d/2 = 32/2 = 16 cm
Substituting this value into the formula for the area of a circle, we get:
A = πr^2 = π(16)^2 = 256π
To find the approximate value of this expression in square centimeters, we can use the approximation π ≈ 3.14. Therefore:
A ≈ 256(3.14) ≈ 804
Rounding this value to the nearest whole number, we get:
A ≈ 804
Therefore, the area of the circle to the nearest whole number is 804 square centimeters.
The histograms display the frequency of temperatures in two different locations in a 30-day period.
A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks every one unit up to 16. A shaded bar stops at 2 above 60 to 69, at 4 above 70 to 79, at 12 above 80 to 89, at 6 above 90 to 99, at 4 above 100 to 109, and at 2 above 110 to 119. The graph is titled Temps in Desert Landing.
A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks every one unit up to 16. A shaded bar stops at 2 above 60 to 69, at 4 above 70 to 79, at 9 above 80 to 89, at 9 above 90 to 99, at 4 above 100 to 109, and at 2 above 110 to 119. The graph is titled Temps in Flower Town.
When comparing the data, which measure of variability should be used for both sets of data to determine the location with the most consistent temperature?
IQR, because Desert Landing is skewed
IQR, because Desert Landing is symmetric
Range, because Flower Town is skewed
Range, because Flower Town is symmetric
Using IQR would be the appropriate measure of variability to compare the consistency of temperatures between Desert Landing and Flower Town.
What is Graph ?
A graph is a visual representation of data that displays the relationship between variables or sets of data. Graphs are commonly used in various fields such as mathematics, statistics, economics, and science to help people understand and analyze data.
IQR, because it is a measure of variability that is resistant to outliers and is appropriate for both symmetric and skewed distributions. It measures the spread of the middle 50% of the data, which gives a good indication of how consistent the temperatures are around the median.
Therefore, using IQR would be the appropriate measure of variability to compare the consistency of temperatures between Desert Landing and Flower Town.
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The lifetime X (in years) of a microchip has a density function given by F(x) = { 0,5e^(-x/2) for x>0
0 Else a) Find the mean lifetime of this microchip b) Find the standard deviation of the lifetime of this microchip c) Find the probability that this microchip will work for more than 3 years. d) Find the probability that this microchip will work for more than 5 years knowing that it has been working for more than 2 years. e) Find the moment generating function of the lifetime
The moment generating function of the lifetime is (1/(1-2t)).
The lifetime X of a microchip has a density function given by F(x) = { 0.5e^(-x/2) for x>0, 0 else.
a) The mean lifetime of this microchip is given by the integral of xF(x) from 0 to infinity. This can be calculated as follows:
Mean = ∫_0^∞ xF(x) dx = ∫_0^∞ x(0.5e^(-x/2)) dx = -xe^(-x/2)|_0^∞ + 2∫_0^∞ e^(-x/2) dx = 2[-2e^(-x/2)|_0^∞] = 4
So the mean lifetime of this microchip is 4 years.
b) The standard deviation of the lifetime of this microchip is given by the square root of the variance. The variance is the integral of (x-mean)^2 F(x) from 0 to infinity. This can be calculated as follows:
Variance = ∫_0^∞ (x-4)^2(0.5e^(-x/2)) dx = ∫_0^∞ (x^2 - 8x + 16)(0.5e^(-x/2)) dx = 8 - 16 + 16 = 8
So the standard deviation of the lifetime of this microchip is √8 = 2.828 years.
c) The probability that this microchip will work for more than 3 years is given by the integral of F(x) from 3 to infinity. This can be calculated as follows:
P(X > 3) = ∫_3^∞ F(x) dx = ∫_3^∞ (0.5e^(-x/2)) dx = -e^(-x/2)|_3^∞ = e^(-3/2) = 0.223
So the probability that this microchip will work for more than 3 years is 0.223.
d) The probability that this microchip will work for more than 5 years knowing that it has been working for more than 2 years is given by the conditional probability P(X > 5 | X > 2). This can be calculated as follows:
P(X > 5 | X > 2) = P(X > 5 and X > 2)/P(X > 2) = P(X > 5)/P(X > 2) = (∫_5^∞ F(x) dx)/(∫_2^∞ F(x) dx) = (e^(-5/2))/(e^(-2/2)) = e^(-3/2) = 0.223
So the probability that this microchip will work for more than 5 years knowing that it has been working for more than 2 years is 0.223.
e) The moment generating function of the lifetime is given by the integral of e^(tx)F(x) from 0 to infinity. This can be calculated as follows:
MGF(t) = ∫_0^∞ e^(tx)F(x) dx = ∫_0^∞ e^(tx)(0.5e^(-x/2)) dx = 0.5∫_0^∞ e^((2t-1)x/2) dx = 0.5[(2/(2t-1))e^((2t-1)x/2)|_0^∞] = (1/(1-2t))
So the moment generating function of the lifetime is (1/(1-2t)).
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What is the variation equation if y varies jointly x and z and y = 360 when x =12 and z = 15?
The variation equation if y varies jointly with x and z and y = 360 when x =12 and z = 15 is y = 2xz.
The variation equation for this situation can be represented as the equation y = kxz, where k is the constant of variation, since y varies jointly with x and z.
We can find the value of k by plugging in the given values of x, y, and z into the equation and solving for k:
360 = k(12)(15)
360 = 180k
2 = k
So, the constant of variation is 2. Hence, the variation equation is y = 2xz. This equation can be used to find the value of y for any given values of x and z. For example, if x = 4 and z = 10, then y = 2(4)(10) = 80.
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7y-7=0
Help pls I need it asap.
Answer:
y=1
Step-by-step explanation:
Answer:1
Step-by-step explanation: 7y = 7
divide both sides by 7 to isolate y
y = 1