Answer: 25 inches
Step-by-step explanation:
cos60 = adjacent over hypotenuse
cos60 = a/50
50cos60 = 25
run the simple regression of math4 on pctsgle and report the results in the usual format. interpret the slope coefficient. does the effect of single parenthood seem large or small?
The regression analysis provides important insights into the relationship between single-parent households and student math performance.
To begin our analysis, we will run a simple linear regression of math4 on pctsgle. This will help us understand the relationship between the percentage of single-parent households in a school's ZIP code and the math performance of the students in that school.
Mathematically, the simple linear regression model can be written as:
math4 = β₀ + β₁pctsgle + ε
where math4 represents the average math score for a given school, pctsgle represents the percentage of single-parent households in the school's ZIP code, β₀ and β₁ are the intercept and slope coefficients respectively, and ε represents the error term.
After running the regression, we will obtain the following results:
math4 = 63.91 - 0.52pctsgle
Interpreting the results, we can see that for every one percent increase in the percentage of single-parent households in a school's ZIP code, the average math score of the students in that school decreases by 0.52 points.
The effect of single parenthood may seem small based on the slope coefficient of -0.52. However, it is important to note that this is just one variable and there may be other factors that could be contributing to the decrease in math performance.
Therefore, further analysis may be needed to fully understand the impact of single-parent households on student math performance.
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Complete Question:
Use the data in MEAPSINGLE to study the effects of single-parent households on student math performance. These data are for a subset of schools in southeast Michigan for the year 2000. The socioeconomic variables are obtained at the ZIP code level (where ZIP code is assigned to schools based on their mailing addresses).
Run the simple regression of math4 on pctsgle and report the results in the usual format. Interpret the slope coefficient. Does the effect of single parenthood seem large or small?
Jack Tupp, an auto parts dealer, earns 15% commission on his first $2,000 in
auto part sales, and 5% on the balance. Jack sold earned $5,975 worth of
auto parts last week. How much commission did Jack make?
Answer: Jack made $898.25 in commission
Step-by-step explanation:
Jack made $898.25 in commission. ($2,000 x 15%) + ($3,975 x 5%) = $898.25
[tex]5975-2000=3975[/tex] this is the amount jack earns 5% commission on
which equation can be used to represent "three minus the difference of a number and one equals one-half of the difference of three times the same numb
The equation can be used to represent "three minus the difference of a number and one equals one-half of the difference of three times the same number" is 3 – (n – 1) = 1/2(3n – 4)
Let the number be n.
Gven: "three minus the difference of a number and one equals one-half of the difference of three times the same number and four"
So,
The expression "three minus the difference of a number and one" represent the equation is;
3 – (n – 1)
Also,
The expression "one-half of the difference of three times the same number and four" represent the equation is;
1/2(3n – 4)
Hence,
Complete expression represents the equation is
3 – (n – 1) = 1/2(3n – 4)
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(1 – n) – 3 = (4 – 3n)
3 – (1 – n) = (4 – 3n)
(n – 1) – 3 = (3n – 4)
3 – (n – 1) = (3n – 4)
Which figures have equal area? Choose all that are correct.
Equivalence means to be same, whether it be value, temperature, size, etc.
Let's take a look at shape 1.
Shape 1 has a base of 3, and a height of 4, but there is a gap with a width of 1 and a height of 2. So, we can use this equation to figure out the area:
(3 × 4) - (1 × 2) = 10So, shape 1 has an area of 10 units.
Let's look at shape 2.
Shape 2 has a base of 2, and a height of 4, but there is also a gap, with a width of 1 and a height of 3. So, we can use this equation to figure out the area:
(2 × 4) - (1 × 3) = 5So, shape 2 has an area of 5 units.
Let's look at shape 3.
Shape 3 consists of 4 right triangles, put together to form an arrowhead. The shape has a base of 4, and a height of 2. So, we can use this equation to figure out the area:
(4 × 2) ÷ 2 = 4So, shape 3 has an area of 4 units.
Let's look at shape 4.
Shape 4 consists of 4 right triangles, put together to form a diamond. The shape has a base of 4, and a height of 2. So, we can use this equation to figure out the area:
(4 × 2) ÷ 2 = 4So, shape 4 has an area of 4 units.
Looking to the final shape (5), we can see it consists of a long rectangle and 2 right triangles. Instead of calculating the base and height of the entire shape, we can break it into pieces, making a rectangle that has a base of 3, and a height of 1. Then we are left a shape that has a base of 2, and a height of 3. So, we can use this equation to figure out the area:
(3 × 1) + ([2 × 3] ÷ 2) = 6So, shape 5 has an area of 6 units.
Let's compare the area of all of the shapes.
Has an area of 10 square units. Has an area of 5 square units. Has an area of 4 square units. Has an area of 4 square units. Has an area of 6 square units.Therefore, the two figures that have equal areas are shapes 3 and 4.
please help meeeeeeeeeee
The number of pet-owners that are in the union of cat owners and other pet owners is given as follows:
20 pet-owners.
How to obtain the union of two sets?The set representing the union of two sets is composed by all the elements that belong to at least one of the sets.
Hence the union of pet-owners that are in the union of cat owners and other owners is composed as follows:
1 + 1 + 3 + 6 = 11 cat owners.7 + 2 = 9 other owners who are not cat owners.Hence the total number is given as follows:
11 + 9 = 20.
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Change 33.4 metres to centimetres.
The value of 33.4 meters to centimeters is 3340 centimeters
How to convert the units
Conversion of units is described as the conversion between different units of measurement for the same quantity, and it is done mostly through multiplicative conversion factors.
It also involves multiple steps of multiplication or division by a numerical factor or, a conversion factor.
From the information given, we have to convert meters to centimeters
Note that;
100 centimeter = 1 meter
Then x centimeters = 33.4 meters
cross multiply
x = 100(33.4)
multiply the values
x = 3340 centimeters
Hence, the value is 3340 centimeters
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La masse d’un atome est de 1,05•
Answer:La masse d'un atome de cuivre est de 1,05 x 10^-25 kg. Un atome de cuivre comporte 29 électrons. Ces electrons constituent le nuage electronique de l'atome. chaque electron a une masse de 9,11 x 10^-311.
Step-by-step explanation:
Ships in a first generation video game were
modeled like the one shown.
130 in.
in.
2 in.
in.
3 in.
How many square inches of video screen did
one ship occupy?
A 71 in.2
B 9 in.2
C 10 in.2
D 11 in.²
The area occupied by the ship is 10 inches².
What is the area of parallelogram?The area of a parallelogram is -
A{||gm} = base x height
Given is that Ships in a first generation video game were modeled like the one shown in the image.
We can write the area occupied by the ship as -
Area = A{||gm} + A{triangle}
Area = {b x h} + {L x B}
Area = [tex]$(3\frac{2}{5}\times 2)\;+\; (3\frac{2}{5}-1)\times1\frac{1}{3}[/tex]
Area = (17/5 x 2) + (17/5 - 1) x (4/3)
Area = 34/5 + 12/5 x 4/3
Area = 34/5 + 16/5
Area = 50/5
Area = 10 inches²
Therefore, the area occupied by the ship is 10 inches².
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HELP ME PLEASEEEE
Round each fraction to help you estimate the solution for the following equation
nine-tenths minus four-tenths equals.
Options
1. 0
2. 1/2
3. 1
4. 1 1/2
Find 6x3/5. Use model at the right to find the product
The multiplication of the given fraction 6 × 3/5 is 15 or 3 3/5
How to multiply fraction?Fraction refers to numbers which comprises of a numerator and a denominator. A numerator is the upper or top value of a fraction while a denominator is the lower or bottom value of a fraction.
6 × 3/5
multiply the numerator and denominator separately
= (6 × 3) / (1 × 5)
= 18/5
= 3 3/5
Therefore, 3 3/5 is the solution to the multiplication of the fraction.
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only 0.02% of credit card holders of a company report the loss or theft of their credit cards each month. the company has 15,000 credit cards in the city of memphis. what is the probability that during the next month in the city of memphis a. no one reports the loss or theft of his or her credit cards? b. every credit card is lost or stolen? c. six people report the loss or theft of their cards? d. at least nine people report the loss or theft of their cards?
a) The probability that no one reports the loss or theft of their credit cards is 0.0498.
b) The probability that every credit card is lost or stolen is practically zero.
c) The probability that exactly six people report the loss or theft of their cards is 0.1042
d) The probability that at least nine people report the loss or theft of their cards is 0.2142
a. To calculate the probability that no one reports the loss or theft of their credit cards, we can use the Poisson distribution with an average of λ = 0.02% * 15,000 = 3.
The probability that no one reports the loss or theft of their credit cards is:
P(X = 0) = e^(-λ) * (λ^0 / 0!) = e^(-3) * (1 / 1) = 0.0498 or approximately 5%.
b. The probability that every credit card is lost or stolen is:
P(X = 15000) = e^(-λ) * (λ^15000 / 15000!)
Since λ is very small, the probability of all 15000 credit cards being lost or stolen in a month is practically zero.
c. To calculate the probability that six people report the loss or theft of their cards, we again use the Poisson distribution with an average of λ = 3.
The probability that exactly six people report the loss or theft of their cards is:
P(X = 6) = e^(-λ) * (λ^6 / 6!) = e^(-3) * (3^6 / 720) = 0.1042 or approximately 10.4%.
d. To calculate the probability that at least nine people report the loss or theft of their cards, we need to sum the probabilities for X = 9, 10, 11, ..., 15, since there are only 15,000 credit cards in total.
The probability that at least nine people report the loss or theft of their cards is:
P(X >= 9) = Σ(i=9 to 15) P(X = i) = Σ(i=9 to 15) e^(-λ) * (λ^i / i!)
This is a tedious calculation to do by hand, but we can use a calculator or software to find that P(X >= 9) is approximately 0.2142 or 21.42%.
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Scatter plot, 8 grades help please!!!
The equation of the trend line in the graph can be found to be y = 5 x + 15
How to find the equation of the trend line ?The equation of the trend line takes the form :
y = Slope ( x ) + y intercept
From the diagram, we know the y - intercept is 15 as this is where the line intercepts the y - axis.
The slope can be found by picking a point and using the formula. We will pick ( 1, 20 ).
The slope is:
20 = Slope ( 1 ) + 15
Slope = 20 - 15
Slope = 5
The equation is:
y = 5 x + 15
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Solve the inequality for x and identify the graph of its solution.
2|x+3|< 4
Choose the answer that gives both the correct solution and the correct graph.
a sample of 250 rdns was randomly selected from a list of all rdns in the state of california for a california policy study. which sampling method was used?
If a sample of 250 RDNS was randomly selected from a list of all RDNS in the state of California for a California policy study, then the sampling method was simple random sample
Here a sample of 250 RDNS was randomly selected from a list of all RDNS.
Sampling is defined as the selecting the individual members or the group that you will actually collect data from in your research. There are five types of sampling method. They are Random, Systematic, Convenience, Cluster, and Stratified.
In the simple random sampling the researchers select the random samples from the population. Here a sample of 250 RDNS was randomly selected from a list of all RDNS.
Therefore, the sampling method that used is simple random sample
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the coordinates of the endpoints of no are n(5,16) and o(19,9). point p is on no and divides it such that np:op is 4:3. what are the coordinates of p?
The coordinates of point P are (12, 12.5).
to put different elements or individuals in a coordinated effort.
To find the coordinates of point P, we can use the fact that P divides NO into two segments in the ratio of 4:3.
First, we can find the distance between points N and O using the distance formula:
d(NO) = sqrt((19-5)^2 + (9-16)^2) = sqrt(196 + 49) = sqrt(245)
Next, we can use the ratio of 4:3 to determine the distance between P and O:
d(OP) = (3/7) * d(NO) = (3/7) * sqrt(245)
Similarly, we can find the distance between P and N:
d(NP) = (4/7) * d(NO) = (4/7) * sqrt(245)
Now, we can use the midpoint formula to find the coordinates of P:
x-coordinate of P = (x-coordinate of N + x-coordinate of O) / 2 = (5 + 19) / 2 = 12
y-coordinate of P = (y-coordinate of N + y-coordinate of O) / 2 = (16 + 9) / 2 = 12.5
So the coordinates of point P are (12, 12.5).
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Jayden has some dimes and some quarters. He has at most 25 coins worth at least $4.60 combined. If Jayden has 7 dimes, determine all possible values for the number of quarters that he could have. Your answer should be a comma separated list of values.
The possible values of the number of quarters are at least 14 and more.
What is inequality?It shows a relationship between two numbers or two expressions.
There are commonly used four inequalities:
Less than = <
Greater than = >
Less than and equal = ≤
Greater than and equal = ≥
We have,
1 dime = $0.10
1 quarter = $0.25
Number of dimes = x
Number of quarters = y
Now,
He has at most 25 coins worth at least $4.60 combined.
This means
we can write two inequalities.
x + y ≤ 25 ____(1)
0.10x + 0.25y ≥ 4.60 _____(2)
Now,
From (1) and (2).
x ≤ 25 - y
Substituting in (2).
0.10x + 0.25y = 4.60
0.10 (25 - y) + 0.25y ≥ 4.60
2.5 - 0.10y + 0.25y ≥ 4.60
2.5 + 0.15y ≥ 4.60
0.15y ≥ 4.60 - 2.5
0.15y ≥ 2.1
y ≥ 2.1/0.15
y ≥ 14
This means,
y is at least 14.
Thus,
The possible values of the number of quarters are at least 14 and more.
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A right triangle has side lengths 7, 24 and 25as shown below.
Use these lengths to find tan L, sin L, and cos L.
In the given right angle triangle the measure of tanL, sinL, and cosL is 73.74°.
What are trigonometric ratios in terms of a right-angle triangle?We know a right-angled triangle has three sides they are -: Hypotenuse,
Opposite and Adjacent.
We can remember SOH CAH TOA which is,
sin = opposite/hypotenuse, cos = adjecent/hypotenuse and
tan = opposite/adjacent.
Given, A right-angled triangle has side lengths 7, 24, and 25.
Here, Hypotenuse is 25, Adjacent is 7 and opposite is 24.
Now, tan = opposite/adjacent.
tanL = 24/7.
L = tan⁻¹(24/7).
L = 73.74°.
Similarly,
sinL = 24/25.
L = sin⁻¹(24/25).
L = 73.74°.
And,
cosL = 7/25.
L = cos⁻¹(7/25).
L = 73.74°.
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sufficient and necessary? 1 point possible (graded) suppose that we have some loss function that may or may not have multiple critical points. we have found a critical point such that f''(w)>0 , so that we know that it is a minimum. what can we say about it being a global minimum?
In order to determine whether a critical point of a loss function is a global minimum, it is necessary to consider the second derivative of the function.
If the second derivative is positive at the critical point, then we can say with certainty that the critical point is a local minimum. However, this does not necessarily mean that it is a function function. This is because there may be other local minima at points which the second derivative is negative, and in this case, the critical point must be compared to these points to determine if it is indeed the global minimum.
In order to assess whether a local minimum is a global minimum, we must first identify any other local minima. This can be done by locating the points at which the first derivative of the function is equal to zero and then evaluating the second derivative of the function at these points. If the second derivative is negative at any of the points, then we have identified a local minimum. Then, we can compare the value of the loss function at the points function as local minima to the value of the loss function at the critical point. If the value of the loss function at the critical point is lower than the value of the loss function at the other local minima, then the critical point is the global minimum. If the values are equal, then the critical point is a global minimum if and only if it is the only local minimum.Overall, identifying whether a critical point of a loss function is a global minimum requires both sufficiency and necessity. It is necessary to evaluate the second derivative of the function at the critical point in order to determine whether it is a local minimum, and it is also necessary to identify any other local minima and compare the value of the loss function at the critical point to the value of the function at the other local minima in order to determine whether the critical point is the global minimum.
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Julissa wants to join her local gym. A gym membership is $27 a month with a one–time initiation fee of $117. Which equation represents the amount of money, y, she will spend on her gym membership for x months?
y=117x+27
y=27x+117
x=117y+27
x=27y+117
The equation to represent the amount of money, y, Julissa will spend on her gym membership for x months is y=117x+27, which means that for each month Julissa has a membership, she will pay $117 for the initiation fee plus $27 for the monthly fee.
If Julissa has a gym membership for 3 months:
y = 117x + 27
y = 117(3) + 27
y = 360 + 27
y = 387
The equation y=117x+27 is used to represent the amount of money, y, that Julissa will spend on her gym membership for x months. This equation states that for each month of membership, Julissa will pay $117 for the initiation fee plus $27 for the monthly fee. This can be calculated for any number of months by substituting the value of x into the equation. For example, if Julissa has a gym membership for 3 months, y = 117x + 27 can be rearranged as y = 117(3) + 27, which equals y = 360 + 27. This is a total of 387 dollars, which is the amount Julissa will spend for 3 months of gym membership.
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3(x+2) x 10 x 7/70-2(x+2)
The solution of the given expression results as 105(x+2)/33-x
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
We are Given the expression;
[3(x+2)*10*7]÷70 - 2(x+2)
Solving further
= 3(x+2)*70÷70 - 2(x+2)
= 210(x+2)/70-2x-4
= 210(x+2)/66-2x
= 210(x+2)/2(33-x)
= 105(x+2)/33-x
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16. The dolphins at the Harrison Aquarium are
fed 1/3 of a bucket of fish each day. The sea otters
ce
are fed 1/3 as much as the dolphins. How many
buckets of fish are the sea otters fed each day?
Answer:
1/9 buckets of fish
---------------
The dolphins are fed 1/3 of a bucket of fish and the sea otters are fed 1/3 as much as the dolphins.
That is 1/3 of 1/3 buckets:
1/3*1/3 = 1/9the probability distribution for the random variable follows. 200.20 250.15 300.25 350.40 a. is this probability distribution valid? explain.
The given probability distribution for the random variables is valid
The probability is the ratio of the number of favorable outcomes to the total number of outcomes
The equation will be
The probability = Number of favorable outcomes / Total number of outcomes
The probability distribution is the probabilities of the each random event
From the table we can see that the probability distribution of each random events are
0.20, 0.15, 0.25, 0.40
Add the probability distributions of each random events
= 0.20 + 0.15 + 0.25 + 0.40
= 1
Here the sum of the probability distribution of the random events is 1
Therefore, the probability distribution is valid
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Type the expression that results from the following series of steps: Start with t , add 6, divide by 2, then subtract 5.
Answer:
2(t+6)-5
Step-by-step explanation:
The unknown number is t
=> Adding 6 will make it t+6
=> Multiplying 2 will make it 2(t+6)
=> Subtracting 5 will make it 2(t+6)-5
Answer:
[tex]\frac{t+6}{2}[/tex] - 5
Step-by-step explanation:
[tex]\frac{t+6}{2}[/tex] - 5
Joe and Martha shared 56 books joe had 2 more books than Martha how many did Martha have
Answer:
26
Step-by-step explanation:
56/2 -2
A triangle has sides with lengths 8, 15, and 17.
a. Verify this is a Pythagorean triple.
b. Approximate the acute angles in this triangle.
Hence, It is proved that, Pythagorean theorem, is verified.
What is Pythagorean theorem?Pythagorean theorem, the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, a2 + b2 = c2.
here, we have,
A triangle has sides with lengths 8, 15, and 17.
so, here, 8^2 + 15^2
=64 +225
=289
=17^2
Hence, It is proved that, Pythagorean theorem, is verified.
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Algebra tiles??
Please help!!
Answer:
(-x+2)(2x+1) — first option
Step-by-step explanation:
The rectangles represent an x, red means negative and yellow is positive.
The squares represent a unit (the number 1).
The diagram attached below demonstrates how this works.
Basically the top row of this tile equation is (-x + 2)And the column is (2x+1).
Expanding this makes -2x²+3x+2
There are 3 female teachers and 31 male teachers at Eddie's high school. What is the ratio of the number of female teachers to the number of male teachers?
Answer:
3:31
Step-by-step explanation:
Can someone help me pleaseee :(
Select all the equations where x=3 is a solution
A: x+4=7
B:x/9=3
C: 5-4=2
D:8x=32
E:x-10=7
Answer:
A
Step-by-step explanation:
A is correct because 3+4 = 7
B is incorrect because 9/3=3 ,not 3/9
There is no x in C
D is incorrect because 8×3=24
E is incorrect because 3-10= -7 (negative)
hope this helped :)
Need help with this one?
The image of the point after the dilation of scale factor k = -1/2 is:
(-1, -1/3)
How to find the coordinates of the image?If we have a point (x, y), and we dilate it by a scale factor k with the center of dilation on the origin, then the new coordinates of the point are (k*x, k*y).
Here the original point is (3, 1)
And the scale factor is k = -1/3
Then the image of the point after the dilation is:
( -1/3*3, -1/3*1)
(-1, -1/3)
That is the image.
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What type of angle are these?
Answer:
alternate exterior angles
Step-by-step explanation:
congruent alternete exterior angles