What is the scale factor from sjt to ect?
Answer: 3
Step-by-step explanation:
The scale factor is the proportional ratio from one figure to another.
Notice the corresponding lengths are CE≅JS, TC≅TJ, and TE≅TS.
Comparing CE and JS, the length for CE is 4, and the length for JS is 12.
[tex]4*3=12[/tex]
This means the scale factor is 3. To be sure, let's try the other side.
TC and TE have the same lengths. They are both 5 in length. TS is 15 in length.
[tex]5*3=15[/tex]
This confirms that the scale factor is 3.
Claim: fewer than 7.4% of homes have only a landline telephone and no wireless phone. Sample data: A survey by the National Center for Health Statistics showed that among 13,323 homes 5.77% had landline phones without wireless phones. Complete parts (a) and (b).
There is sufficient evidence to suggest that the proportion of homes with only a landline phone is less than 7.4%.
Null hypothesis: p ≥ 0.074
proportion of homes with only a landline phone is greater than or equal to 7.4%
Alternative hypothesis: p < 0.074 (proportion of homes with only a landline phone is less than 7.4%)
where p is the true proportion of homes in the population that have only a landline phone.
(b) Compute the test statistic and p-value assuming the null hypothesis is true, using a significance level of α = 0.05.
To compute the test statistic, we first need to calculate the sample proportion:
p cap= 0.0577
The test statistic is given by:
z = (p cap - p) / √p(1-p)/n
where n is the sample size. Substituting the values, we get:
z = (0.0577 - 0.074) / √0.074(1-0.074)/13323)
= -12.28
the p-value is less than 0.0001, which is much smaller than the significance level of 0.05.
Therefore, we reject the null hypothesis and conclude that there is sufficient evidence to suggest that the proportion of homes with only a landline phone is less than 7.4%.
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If the recommended adult dosage for a drug is D (in mg), then to determine the appropriate dosage e for a child of age a, pharmacists use the equation c = 0.0417D(a + 1).
Suppose the dosage for an adult is 150 mg.
(a) Find the slope of the graph of e. (Round your answer to two decimal places.)
What does it represent?
The slope represents the Select of the dosage for a child for each change of 1 year in age.
(b) What is the dosage for a newborn? (Round your answer to two decimal places.)
ma
a) The slope shows that the appropriate dose c for an older child increase by 6.225 mg if the child is one year older.
b) The dose for newborn baby is: 6.225 mg
The equation of a line in slope intercept form is:
y = mx + c
where: m is slope and c is y-intercept
(a) Let a be an age of an child in years. Then:
c = 0.0417Da + 0.0417D
Where D is a constant
Since D = 150 mg, then we have:
The slope of the graph = 0.0417(150)
= 6.225 mg/year
The slope shows that the appropriate dose c for an older child increase by 6.225 mg if the child is one year older.
(b) Newborn baby: a=0
Thus:
c(0) = 0 + 6.225
= 6.225 mg
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PLEASE HELP FAST!
A marble is selected from a bag containing eight marbles numbered 1 to 8.
The number on the marble selected will be recorded as the outcome.
Consider the following events.
Event A: The marble selected has an ODD number.
Event B: The marble selected has a number from 3 to 6.
Give the outcomes for each of the following events.
If there is more than one element in the set, separate them with commas.
The possible outcomes for each of the given events are:
A {1, 3, 5, 7}
B {3, 4, 5, 6}
How to identify the outcomes for the events?The possible outcomes for the experiment are {1, 2, 3, 4, 5, 6, 7, 8}.
The two given events are:
A "The marble selected is an odd number"
The outcomes for this event are the odd numbers that are outcomes for the experiment, then the outcomes here are {1, 3, 5, 7}
The second event is:
B "The marble selected has a number from 3 to 6."
The possible outcomes here are {3, 4, 5, 6}
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Write the number 12,304,652 using words
Submit Question
X Question 4
Answer:twelve million, three hundred and four thousand, six hundred and fifty two
Step-by-step explanation:
if a small cup is 10 oz and cost 2.69 what is the cost per ounces
Answer:
The cost per ounce of the small cup is $0.269
Step-by-step explanation:
To find the cost per ounce, we can divide the cost of the cup by the number of ounces it holds.
Cost per ounce = Cost of the cup ÷ Number of ounces in the cup
Cost of the cup = $2.69
Number of ounces in the cup = 10 oz
So,
Cost per ounce = $2.69 ÷ 10 oz
Cost per ounce = $0.269 per oz (rounded to the nearest thousandth)
Therefore, the cost per ounce of the small cup is $0.269.
you have negioated a vehcile purchase rice of $37,000, will make a $7,000 down payment and finance the remainder. The terms of the loan are: monthly payments, 6.00 percent annual rate of interest, and you will finance the loan for six years.
a. calculate the amount of your monthly payments
b. at the end of the six-year loan term, what is the total amount of interest you will have paid the lenders?
When graphing the inequality y s 2x - 4, the boundary line needs to be graphed first. Which graph correctly shows the boundary line?
The graph that correctly shows the boundary line for y ≤ 2x − 4, is B. Graph B.
How to find the graph ?The inequality y ≤ 2x − 4, shows that the y - intercept is - 4. What this means is that the boundary line must pass through ( 0, - 4 ). As Graphs C and D do not cross ( 0, - 4 ), neither of them can be the boundary line.
Also, when representing an inequality on a graph, the signs of ≤ and ≥ are presented with a solid line. > and < are the ones presented with a broken line. This means that Graph A cannot the boundary line for the inequality.
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What are the coordinates of the focus of the parabola? y=−1/8x2−2x−4
The coordinates of the focus of the parabola y = -(1/8)x² - 2x - 4 is (-8, 2).
What are the coordinates of the focus of the parabola?y = -(1/8)x² - 2x - 4
Given by the equation y = -(1/8)x² - 2x - 4,
To find the focus of the parabola we first need to put the equation in standard form:
y = a(x - h)² + k
Where (h, k) is the vertex of the parabola, and a is a constant that determines the shape and size of the parabola.
Completing the square on the x terms, we get:
y = -(1/8)(x² + 16x + 64) - 4 + 8
= -(1/8)(x + 8)² + 4
Comparing this to the standard form, we see that the vertex is (-8, 4) and a = -1/8.
Since the coefficient of x² is negative, the parabola opens downwards.
The focus of the parabola is located at a distance of 1/(4a) units from the vertex, on the axis of symmetry, which is a vertical line passing through the vertex.
Substituting the value of a, we get:
= 1/(4a)
= 1/(4(-1/8))
= 2
Therefore, the focus of the parabola is located 2 units below the vertex, on the line x = -8.
So the focus has coordinates (-8, 2).
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Solitary Savings received an initial deposit of $2000. It kept a percentage of this money in reserve based on the reserve rate and loaned out the rest. The amount it loaned out was eventually all deposited back into the bank. if this cycle continued indefinitely and eventually the $2000 turned into $40,000, what was the reserve rate?
The value of reserve rate is 5%
Given that;
Solitary savings bank received initially amount of $2000.
Now, Let x% percent be kept as reserve then (100-x)% will be loaned out which would be deposited in other bank.
The other bank would keep x% of (100 - x) and again loan the remaining amount.
Thus the total deposits of this cycle would be a geometric series as
⇒ 2000[1 + (100 - x)% + (100 - x)²%+(100-x)² +...]
Here common ratio is,
(100 - x) / 100 = 1 - 0.01x <
for all possible x
This series is infinite and sum of this would be
= sum of geometric series
= 2000 (1/ (x/100)
= 200000/x
This is given as, 40000
Hence, equate and simplify to get;
⇒ x = 5%
So, The value of reserve rate is 5%
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Find the missing angle
A
B
C
D
The solution is the missing angle is 74.
Here, we have,
The sum of all the angles of a triangle (of all types) is equal to 180°.
The sum of the length of the two sides of a triangle is greater than the length of the third side.
In the same way, the difference between the two sides of a triangle is less than the length of the third side.
here, we have,
from the given diagram, we get,
the given angles are 55 and 51
let, the missing angle be x
we know that,
The sum of all the angles of a triangle (of all types) is equal to 180°.
so, x+55+51 = 180
or, x + 106 = 180
or, x = 74
Hence, The solution is the missing angle is 74.
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Question 2: Perform the inverse Laplace transform of the following rational fractions using partial fraction expansion. List the procedures and verify the results with the MATLAB function "ilaplace". Attach the MATLAB codes and results. (1) F(s) = 5+1 ($2+28+2) (10 marks) (2) F(s) = s2+3+1 (s+2)(82+28+1) (10 marks)
(1) F(s) = 5+1 / (s^2 + 28s + 2)
To perform partial fraction expansion, we first need to factor the denominator:
s^2 + 28s + 2 = (s + 14 - sqrt(194))(s + 14 + sqrt(194))
We can then write:
F(s) = A / (s + 14 - sqrt(194)) + B / (s + 14 + sqrt(194))
where A and B are constants to be determined.
Multiplying both sides by the denominator and simplifying, we get:
5+1 = A(s + 14 + sqrt(194)) + B(s + 14 - sqrt(194))
Setting s = -14 - sqrt(194), we get:
5+1 = B(2sqrt(194))
Solving for B, we get:
B = (5+1) / (2sqrt(194))
Setting s = -14 + sqrt(194), we get:
5+1 = A(2sqrt(194))
Solving for A, we get:
A = (5+1) / (2sqrt(194))
Thus, the partial fraction expansion of F(s) is:
F(s) = [(5+1) / (2sqrt(194))] / (s + 14 + sqrt(194)) + [(5+1) / (2sqrt(194))] / (s + 14 - sqrt(194))
To find the inverse Laplace transform, we can use the table of Laplace transforms or MATLAB. Using MATLAB, we get:
ilaplace(F(s)) = (5+1) / (2sqrt(194)) * (exp(-14t) / sqrt(194)) * (cosh(sqrt(194)t) + sinh(sqrt(194)t))
(2) F(s) = s^2 + 3s + 1 / (s + 2)(s^2 + 8s + 1)
To perform partial fraction expansion, we first need to factor the denominator:
s^2 + 8s + 1 = (s + 4 - sqrt(15))(s + 4 + sqrt(15))
We can then write:
F(s) = A / (s + 2) + B / (s + 4 - sqrt(15)) + C / (s + 4 + sqrt(15))
where A, B, and C are constants to be determined.
Multiplying both sides by the denominator and simplifying, we get:
s^2 + 3s + 1 = A(s + 4 - sqrt(15))(s + 4 + sqrt(15)) + B(s + 2)(s + 4 + sqrt(15)) + C(s + 2)(s + 4 - sqrt(15))
Setting s = -4 + sqrt(15), we get:
-4 + sqrt(15) = A(-4 + sqrt(15) + 4 + sqrt(15))
Solving for A, we get:
A = (-4 + sqrt(15)) / (2sqrt(15))
Setting s = -4 - sqrt(15), we get:
-4 - sqrt(15) = A(-4 - sqrt(15) + 4 + sqrt(15))
Solving for A, we get:
A = (-4 - sqrt(15)) / (-2sqrt(15))
Setting s = -2, we get:
-1 = B(-2)(-2 + 4 + sqrt(15))
Solving for B, we get:
B = (-1) / (2sqrt(15) + 4)
Setting s =
Solve the following system of equations. If there is no solution, write DNE in each coordinate of the ordered triplet. If there are an infinite number of solution, write each coordinate in terms of z
x+3=y+12
z+13=x+8
y-7=z-11
PLS
Please help me with this question giving brainliest and points
The category that had the highest relative frequency is given as follows:
Have chores.
How to obtain the relative frequencies?To obtain the relative frequencies for each item, we must add the rows/columns that represent the items in this problem.
Hence the relative frequencies for each item are given as follows:
Have chores: 9 + 7 = 16.Do not have chores: 8 + 6 = 14.Have a sibling: 7 + 8 = 15.Does not have a sibling: 9 + 6 = 15.More can be learned about relative frequencies at https://brainly.com/question/1809498
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Given u = 4i - 7j and v = -6i + 9j, what is u • v?
-87
-82
26
39
SIMPLIFY the expression: 12x - 7y - 8x + 3y
Answer:
the simplified expression is 4x - 4y
Step-by-step explanation:
1. Rewrite!
12x - 7y - 8x + 3y
2. Combine like terms:
12x - 8x - 7y + 3y
3. Solve both sides to simplify
12 x - 8x = 4x
and
-7y + 3y = -4y
So, 4x - 4y is your answer.
I scored 414/800 marks convert into Gpa
In which quadrant does the point (-25, 15) lie ?
The point (-25, 15) lies in the third quadrant above the x-axis and left to the y-axis.
The four quadrants are formed by the intersection of the x-axis and the y-axis on a Cartesian plane. The point (-25, 15) is represented by the coordinates (-25) and (15) on the x and y-axis, respectively. Since the x-coordinate is negative, the point lies to the left of the y-axis.
Similarly, since the y-coordinate is positive, the point lies above the x-axis. Therefore, the point (-25, 15) is located in the third quadrant, which is below the x-axis and to the left of the y-axis. In this quadrant, both the x and y-coordinates are negative.
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How many cubic meters of dirt are there in a pile conical shape 9m in diameter and 4m high
The Volume of Cone is 84.8 m³.
We have,
d = 9 m
r= 4.5 m
H = 4 m
So, Volume of Cone
= 1/3 πr²h
= 1/3 (3.14) (4.5)² (4)
= 1/3 (3.14) (20.25) (4)
= 84.8 m³
Thus, the volume is 84.8 m³.
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Which set of ordered pairs gives the polygon shown?
(-1, 0.5), (1.25, 0), (0.75, -0.75)
(0.75, -0.75), (-1, 0.5), (0, 1.25)
(-0.75, 0.75), (0.5, -1), (0, 1.25)
(-1, 0.75), (0, 1.5), (0.75, -0.75)
The set of ordered pairs of the polygon is:
(0.75, -0.75), (-1, 0.5), (0, 1.25)
Option B is the correct answer.
We have,
From the figure,
We have,
The polygon has three points.
The points are in ordered pairs.
We see that,
Each number has four units.
So,
1 unit = 0.25 units
Now,
The coordinates of the polygon are:
(3 units, -3 units) = (0.75, -0.75)
(0, 5 units) = (0, 1.25)
(-4 units, 2 units) = (-1, 0.50)
Thus,
The set of ordered pairs of the polygon is:
(0.75, -0.75), (-1, 0.5), (0, 1.25)
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Sociodemographic differences in lung cancer worry. Hahn (2017) evaluated socio-demographic differences in how people worry about lung cancer. Some of the differences observed across demographics of interest were between males and females [t(45) = 0.69; higher mean worry among men], smokers and nonsmokers [t(45) = 2.69; higher worry among smokers], and whether or not a person graduated high school [t(45) = 2.56; higher mean worry among those who did not graduate high school]. However, at least one of these results were not statistically significant. Which test(s) was (were) not significant?
Answer:
The result for the difference in lung cancer worry between males and females was not statistically significant in Hahn's (2017) study (t(45)=0.69, p > 0.05). The results for the differences in worry between smokers and nonsmokers, and those who did and did not graduate high school, were statistically significant with p values less than 0.05.
Step-by-step explanation:
A
Find the value of each determinant:
7 31
19
142
11
7
11
21
55
-8 2
-16 -1 -9
11
9.07 6.02 2.01
-30.7 2.5 3.5 =
3.55 -1.1 2.35
The determinant of each of the given matrices are:
1) -4269
2) -1988
3) -68.92
How to calculate determinants of Matrix?The determinant of a matrix is a number that is specially defined only for square matrices. Determinants are mathematical objects that are very useful in the analysis and solution of systems of linear equations.
Thus:
1) [tex]\left[\begin{array}{ccc}7&&31\\142&&19\\\end{array}\right][/tex]
The determinant of this 2 x 2 matrix is:
(7 * 19) - (142 * 31) = -4269
2) [tex]\left[\begin{array}{ccc}7&11&21\\55&8&2\\-16&1&-9\end{array}\right][/tex]
The determinant of this 3 x 3 matrix is:
7((8*-9) - (1*2)) + 11((55*-9) - (2*-6)) + 21((55*1) - (8*-16)) = -1988
3) [tex]\left[\begin{array}{ccc}5.07&6.02&2.01\\-30.7&2.5&3.5\\3.55&-1.1&2.35\end{array}\right][/tex]
The determinant of this 3 x 3 matrix is:
5.07[(2.5 * 2.35) - (-1.1 * 3.5)] + 6.02[(-30.7 * 2.35) - (3.5 * 3.55)] + 2.01[(-30.7 * -1.1) - (2.5 * 3.55)] = -68.92
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Please help asap please
The expansion and simplification of the expression, (3x - 2)(2x² + 5x - 1) is 6x³ + 11x² - 13x + 2.
How to simplify and expand an expression?In order to expand and simplify an expression, we need to multiply out the brackets and then simplify the resulting expression by collecting the like terms.
Therefore, let's expand and simplify the expression.
Hence,
(3x - 2)(2x² + 5x - 1)
Therefore, let's multiply
(3x - 2)(2x² + 5x - 1) = 6x³ + 15x² - 3x - 4x² - 10x + 2
6x³ + 15x² - 3x - 4x² - 10x + 2 = 6x³ + 15x² - 4x² - 3x - 10x + 2
6x³ + 15x² - 4x² - 3x - 10x + 2 = 6x³ + 11x² - 13x + 2
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PLS HELP!
write an equation of the ellipse with foci at (0 ±10), and vertices at (0 ±11)
Look at image that is attached
Answer: Linear
Step-by-step explanation:
I can tell from the table because there is a difference of 4 between each y value.
I dont know what the other blanks will be because i cant see the options. But it shouldnt be too hard to fill out
It usually it supposed to be in radical form, but I do not know why they give correct answer choices in the vector form.
Answer:
I think its 221
Step-by-step explanation:
A student named Foofy conducted a survey. In her sample, 83% of mothers employed outside the home would rather be home raising children. She reported that "the statistical analyses prove that most working women would rather be at home." What is the problem with this conclusion? Using everything we've learned in the class so far, how could we fix her report to make it better?
The problem with Foofy's conclusion is that she drew a general conclusion from a sample without considering potential biases or confounding factors. To make the report better, she could provide more context, acknowledge potential biases, and make it clear that her conclusion only applies to her sample.
The problem with Foofy's conclusion is that it is based on a biased sample. She only surveyed mothers who were employed outside the home, which does not represent all working women. Therefore, her conclusion cannot be generalized to all working women.
To make the report better, Foofy could specify that her conclusion only applies to mothers who are employed outside the home, rather than all working women.
Additionally, she could improve the study's sampling method by randomly selecting a more representative sample of working women, rather than only surveying mothers who are employed outside the home.
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Which function has a domain where x is not equal to 3 and a range where y is not equal to 2?
Domain where x is not equal to 3 and a range where y is not equal to 2 for function (x+5)/(x-3)
Domain = Set of all input values of a function.
range = set of all output values of a function.
Given: Domain: x≠3 ; range = y≠2
We do not include a value for domain if it makes the expression indeterminant .
Since all the functions in options are fractions, here the denominator does not equal to 0.
But in option C and D, the denominator can be zero if x=3.
So , domain for then it x ∈ R-3
for option C if 2=2(x+5)/(x-3)
x-3=x+5
-3=5 which is not possible
Where as in option D, 2=(x+5)/(x-3)
2x-6=x+5
x=11
Hence, domain where x is not equal to 3 and a range where y is not equal to 2 for function (x+5)/(x-3)
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Which function has a domain where x does not =3 and a range where y does not =2? A. f(x)=(x-5)/(x+3) B. f(x)=2(x+5)/(x+3) C. 2(x+5)/(x-3) D. (x+5)/(x-3)
PLEASE HELP ME PICK THE RIGHT ANSWER!!!!!
The meaning of the absolute value of -5.5 is given as follows:
The temperature decreases 5.5 degrees.
What is the absolute value of a number?The absolute value of a number is the number without the signal, for example:
|-2| = |2| = 2.
The number in this problem is given as follows:
-5.5.
Hence:
The negative sign means that the temperature decreased.The absolute value of 5.5 means that the temperature decreased by 5.5 degrees.Hence the second option is the correct option in the context of this problem.
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expressions that are equivalent to x^6
The expressions for [tex]x^6[/tex] can be varied, one such basic expression is [tex](x^n)^m[/tex], where n and m are positive integers equal to 2 and 3.
A grouping of numbers, variables, and operations like addition, subtraction, multiplication, division, exponentiation and more is known as an expression. A single number or variable can be an expression it can also include a combination of terms or functions.
By simplifying the [tex]x^6[/tex] we can get the expression-
[tex]x^6=(x^2)^3 \\\\x^6=(x^3)^2\\\\x^6=x^2 * x^4 \\\\x^6=(x^2 + 1 - 1)^6\\\\x^6=(x^3 - x^2 + x - 1 + 1)^2[/tex]
all these expressions represent [tex]x^6[/tex].
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