Answer:
Each of the bold numbers is a statistic.
Step-by-step explanation:
In statistical analysis, observations may either be from a sample or from a population. Samples are smaller subsets a population and hence, if chosen randomly forms a good representative of the population data.
Hence, numerical characteristics of observation which forms a population are called PARAMETER. While numerical characteristics of a given sample are called STATISTIC.
From the scenario given above, 128,000 people were interviewed, this represents a sample from the population and not the entire population. Hence, all numerical characteristic or attribute derived from the sample of 128,000 interviewees will be a statistic.
find an equation that passes through (1 ,2) and is parallel y=3x-9
Answer:
A line that is parallel to y = 3x - 9 will have the same slope as the given line. The slope of y = 3x - 9 is 3. Therefore, the equation of the line that passes through (1, 2) and is parallel to y = 3x - 9 is:
y - y1 = m(x - x1)
where m is the slope and (x1, y1) is the point (1, 2)
Substituting the values we get:
y - 2 = 3(x - 1)
Simplifying the equation we get:
y - 2 = 3x - 3
y = 3x - 1
Therefore, the equation of the line that passes through (1, 2) and is parallel to y = 3x - 9 is y = 3x - 1 .
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8. The dimensions of a lawn shaped like a trapezoid are given in meters.
18 m
4 m
5 m
12 m
The dimensions of a lawn shaped like a trapezoid are given in meters. What is the
area of the lawn?
108 m2
60 m2
72 m2
120 m2
Answer:
60m²
Step-by-step explanation:
Area of the trapezoid attached = 1/2(a+b)*h
a and b are the opposite sides
h is the height
Given
a = 18m
b = 12m
h = 4m
Substitute
Area of the trapezoid = 1/2(18+12)*4
Area of the trapezoid = 1/2 * 30 * 4
Area of the trapezoid = 120/2
Area of the trapezoid = 60m²
Hence the area of the lawn is 60m²
Solve the equation
1/2 k + 2 = 5 + 5/6 k
a. 2 1/4
b. -9
c. 9
d. -21
Please select the best answer from the choices provided
Answer:
1/2k+2=5+5/6k
-3 = 5/6k-1/2k
-3=2/6k
k= -9
Final Answer: \(k = -9\)
Steps/Reasons/Explanation:
Question: Solve the equation \(\frac{1}{2} k + 2 = 5 + \frac{5}{6}k\). Please select the best answer from the choices provided.
\(a.\) \(2\frac{1}{4}\)
\(b.\) \(-9\)
\(c.\) \(9\)
\(d.\) \(-21\)
Step 1: Simplify \(\frac{1}{2}k\) to \(\frac{k}{2}\).
\(\frac{k}{2} + 2 = 5 + \frac{5}{6}k\)
Step 2: Simplify \(\frac{5}{6}k\) to \(\frac{5k}{6}\).
\(\frac{k}{2} + 2 = 5 + \frac{5k}{6}\)
Step 3: Multiply both sides by \(6\) (the LCM of \(2, 6\)).
\(3k + 12 = 30 + 5k\)
Step 4: Subtract \(3k\) from both sides.
\(12 = 30 + 5k - 3k\)
Step 5: Simplify \(30 + 5k - 3k\) to \(30 + 2k\).
\(12 = 30 + 2k\)
Step 6: Subtract \(30\) from both sides.
\(12 - 30 = 2k\)
Step 7: Simplify \(12 - 30\) to \(-18\).
\(-18 = 2k\)
Step 8: Divide both sides by \(2\).
\(-\frac{18}{2} = k\)
Step 9: Simplify \(-\frac{18}{2}\) to \(-9\).
\(-9 = k\)
Step 10: Switch sides.
\(k = -9\)
~I hope I helped you :)~
No links please
April has $47 to spend at the mall. She wants to buy a pair of jeans for $20 and some bargain books for $2 each. What is the maximum
bargain books, b, that April can buy?
12 books
13 books
14 books
15 books
Answer:
Step-by-step explanation:
In this triangle what is the value of x
Answer:
Step-by-step explanation:
error
Answer:
x ≈ 75.2
Step-by-step explanation:
using the tangent ratio in the right triangle
tan62° = \(\frac{opposite}{adjacent}\) = \(\frac{x}{40}\) ( multiply both sides by 40 )
40 × tan62° = x , then
x ≈ 75.2 ( to the nearest tenth )
A box contains 9 identical glass spheres, tightly packed. The box is 12 inches by 12 inches. What is the total volume in cubic inches?
Answer:
V(b) = 576 in³
Step-by-step explanation:
9 = 3 * 3
12 = 3 * 2 *2
To have 9 spheres in a box 12 x 12 in²
We need to arrange in a grid of 3 x 3 spheres of 4" diameter, then
three rows and three columns will fit exactly i the box 12 x 12 in²
Now the height of the box need to be adequate for the diameter of the spheres ( 4 in )
Therefore the total volume of the box is:
V(b) = 12*12*4
V(b) = 576 in³
Trevor has a rectangular patch of dirt that has a length of 50 feet and a width of 30 feet. He wants to divide this area into two rectangular gardens as shown.
Write an expression to represent the area of the
garden on the left.
B. Write an expression to represent the area of the
garden on the right.
C. If the area of the garden on the left is greater, what
is the difference of the areas of the two gardens? Simplify your answer
Answer:
sweefe
Step-by-step explanation:
EFEFEEa
Ann is 11 more than two times older than Stacy. If Ann is 59 years old,
solve an equation to determine Stacy's age
The age of Stacy is 24 years old provided the age of Ann is 59 years old.
What is an equation?Two or more expressions with an equal sign are defined as an equation.
Given that, Ann is 11 more than two times older than Stacy.
Let the age of Stacy and Ann be s and a respectively, then:
a = 11 + 2s
Substitute a = 59 into the above equation:
59 = 11 + 2s
2s = 59 -11
s = 24
Hence, the age of Stacy is 24 years old provided the age of Ann is 59 years old.
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A rectangular red sticker has an area of 9 square millimeters and a perimeter of 20 millimeters. What are the dimensions of the sticker?
Answer:
1 millimeter by 9 millimeters
Step-by-step explanation:
The only way to get an area of 9 is to have a length of 9 and a width of 1 or a width of 3 and a length of 3. They are asking for a rectangle so the second option is out. To find perimeter multiply 2L+2W. 2(9)=18 and 2(1)=2. 18+2=20 millimeters so you know it is correct.
You are choosing between two health clubs club a offers membership for a fee of $13 plus a monthly fee of $28 club B offers membership for a fee of $19 plus a monthly fee of $27 after how many months will the total cost of each health club be the same? What will be the total cost for each club?
To determine when the total cost of each health club will be the same, we can set up an equation and solve for the number of months.
Let's assume the number of months is represented by 'x'.
For Club A, the total cost is given by:
Total cost of Club A = $13 (one-time fee) + $28x (monthly fee)
For Club B, the total cost is given by:
Total cost of Club B = $19 (one-time fee) + $27x (monthly fee)
To find the number of months when the total cost is the same, we set the two equations equal to each other:
$13 + $28x = $19 + $27x
Simplifying the equation, we get:
$28x - $27x = $19 - $13
$x = 6
Therefore, after 6 months, the total cost of each health club will be the same.
To find the total cost for each club after 6 months, we substitute the value of 'x' back into the equations:
Total cost of Club A after 6 months = $13 + $28(6) = $13 + $168 = $181
Total cost of Club B after 6 months = $19 + $27(6) = $19 + $162 = $181
So, the total cost for both Club A and Club B will be $181 after 6 months.
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he International Average Salary Income Database provides a comparison of average salaries for various professions The data are gathered from publications and reports obtained directly from government agencies (such as the U.S Bureau of Labor Statistics) or from the International Labour Organization. Suppose an industrial/organizational psychologist is interested in the relationships between job satisfaction, job performance, and job compensation. She has data from five different countries on the average monthly salaries paid to computer programmers. She begins her analysis by converting all of the salary data into U.S. dollars: Average Monthly Salary Deviation Original (U.S. dollars) (U.S. dollars) Currency Standard Country Italy Hungary the Czech Republic the United States Latvia $1,557 $1,468 $1,059 $4,141 $790 $467.20 $220.20 $158.80 $1,242.20 $118.60 euro forint koruna dollar lat
The z scores for each Country is Given below.
What is z- score?The Z-score quantifies the discrepancy between a given value and the standard deviation. The Z-score, also known as the standard score, indicates how many standard deviations a specific data point deviates from the mean. In essence, standard deviation represents the degree of variability present in a given data collection.
Given:
Country Average monthly Standard deviation Original
salary (U.S. dollars) (U.S. dollars) currency
Czech
Republic $1,059 $158.80 koruna
Latvia $790 $118.60 lat
Hungary $1468 $220.20 forint
Italy $1,557 $467.20 Euro
United States $4,141 $1,242.20 dollar
Now, Calculating the z-scores making $1,500 per month.
The z scores are :
Country Z-Scores
Czech Republic (1500 - 1059)/ 158.8 = 2.77
Latvia (1500 - 790)/ 118.6 =5.98
Hungary (1500 - 1468)/ 220.20=0.145
Italy (1500 - 1557)/ 467.20=-0.12
The United States (1500 - 4141)/ 1242.2 =-2.12
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Question 44 of 44
Which of these is an optional deduction for money to be taken out of an
employee's paycheck?
A. Federal income tax
B. Medicare
C. Life insurance
D. Social Security
Answer : Life Insurance
Explanation : Have A Good Day
◊ YusuCr ◊
The optional deduction for money to be taken out of an employee's paycheck is life insurance.
Option C is the correct answer.
What is an employee's paycheck?An employee's paycheck is a document issued by an employer that lists the amount of money an employee has earned during a certain pay period and the amount of money that has been withheld for taxes, insurance, and other deductions.
It also includes the net amount of money that the employee is entitled to receive after all deductions have been made.
We have,
Life insurance is an optional deduction for money to be taken out of an employee's paycheck.
The other options listed (Federal income tax, Medicare, and Social Security) are typically mandatory deductions required by law.
Thus,
The optional deduction for money to be taken out of an employee's paycheck is life insurance.
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Urgent help The half life of lead is 22 years. Suppose we have a 20 gram sample.
A : find the k?
B: find the equation that models the mass after t years.
C: how much of the sample will remain after 50 years
D: after how long will only 3 grams of the sample remain
The value of
a. k = 0.0315
b. m(t) = m(o) e^-kt
c. m(t) = 4.2g
d. t = 60.2 years
What is half-life?The half-life of a radioactive isotope is the amount of time it takes for one-half of the radioactive isotope to decay. The half-life of a specific radioactive isotope is constant; it is unaffected by conditions and is independent of the initial amount of that isotope.
half life = 0.693/k
22 = 0.693 / K
22k = 0.693
K = 0.693/22
K = 0.0315
The mass after time t is given as ;
m(t) =m(o)e^-kt
where m(o) = 20g
after 50 years
m(t) = 20e^-(0.0315)(50)
= 20e^-1.575
m(t) = 20 × 0.21
m(t) = 4.2
3 = 20e^-0.0315t
3/20 = e^-0.0315t
0.15 = e^-0.0315t
ln 0.15 = -0.0315t
- 1.897 = -0.0315t
t = -1.897/-0.0315
t = 60.2 years
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car cost #450,000 and its being sold for #540,000. find the profit as a percentage of the cost price
Question
From a point P on a level ground and directly west of a pole, the angle of elevation of the top of the pole is 45° and from point Q east of the pole, the angle of elevation of the top of the pole is 58°. If |PQ|= 10m, calculate, correct to 2 significant figures, the:
a) distance from P to the pole;
b) height of the pole.
a) The distance from point P to the pole is: 6.2 m
b) The height of the Pole is: 6.2 m
How to find the distance and height from angle of elevation?The triangle attached shows us the triangle formed as a result of the given word problem about angle of elevation and distance and height.
Now, we are given that:
The angle of elevation of the top of the pole = 45°
Angle of elevation of the top of the pole = 58°.
|PQ|= 10m
a) PR is distance from point P to the pole and using trigonometric ratios, gives us:
PR/sin 58 = 10/sin(180 - 58 - 45)
PR/sin 58 = 10/sin 77
PR = (10 * sin 58)/sin 77
PR = 8.7 m
b) P O can be calculated with trigonometric ratios as:
P O = PR * cos 45
P O = 8.7 * 0.7071
P O = 6.2 m
Now, the two sides of the isosceles triangle formed are equal and as such:
R O = P O
Thus, height of pole R O = 6.2 m
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PLEASE HELP ME
The function f(x) = -2(4)^x+1 +140
represents the number of tokens a child has x hours after arriving at an arcade.
What is the practical domain and range of the function?
If necessary, round to the nearest hundredth.
The practical domain of the situation is ?
The practical range of the situation is ?
PLEASE SEE PHOTO FOR FUNCTION
The function f(x) = -2(4)ˣ⁺¹ +140 represents the number of tokens a child has x hours after arriving at an arcade. The practical domain and range of the function are x ≥ 0 and The practical range of the situation is [140, ∞).
The given function is f(x) = -2(4)ˣ⁺¹+ 140, which represents the number of tokens a child has x hours after arriving at an arcade.
To determine the practical domain and range of the function, we need to consider the constraints and limitations of the situation.
For the practical domain, we need to identify the valid values for x, which in this case represents the number of hours the child has been at the arcade. Since time cannot be negative in this context, the practical domain is x ≥ 0, meaning x is a non-negative number or zero.
Therefore, the practical domain of the situation is x ≥ 0.
For the practical range, we need to determine the possible values for the number of tokens the child can have. Looking at the given function, we can see that the term -2(4)ˣ⁺¹represents a decreasing exponential function as x increases. The constant term +140 is added to shift the graph upward.
Since the exponential term decreases as x increases, the function will have a maximum value at x = 0 and approach negative infinity as x approaches infinity. However, due to the presence of the +140 term, the actual range will be shifted upward by 140 units.
Therefore, the practical range of the situation will be all real numbers greater than or equal to 140. In interval notation, we can express it as [140, ∞).
To summarize:
- The practical domain of the situation is x ≥ 0.
- The practical range of the situation is [140, ∞).
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Help me with this question
Answer:
LETS
GO
BRANDON
Step-by-step explanation:
What is the answer of this triangle congruence question.
The value of x in the triangles are 9.
What is a quadratic equation?For variable x : ax² + bx + c = 0, where a≠0 is a standard quadratic equation, which is a second-order polynomial equation in a single variable. It has at least one solution since it is a second-order polynomial equation, which is guaranteed by the algebraic basic theorem.
Given:
The triangles are congruent.
That means, their corresponding angles are also congruent.
In ΔJKL,
the sum of all the angles of the triangle is 180°.
So,
x²-2x + x + 29 + 3x + 52 = 180
x² + 2x - 99 = 0
Solving the quadratic equation,
x² +11x - 9x - 99 = 0.
x (x + 11) -9 (x + 11) = 0
x = 9 and x = -11
Here, we take x = 9.
Therefore, the value of x is 9.
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Find the values of x and y.
A. x = 42, y = 26.3
B. x = 47, y = 30
C. x = 42, y = 30
D. x = 47, y = 26.3
Answer:
C
Step-by-step explanation:
2x + 1 = 85 (Alternate Interior Angles Theorem)
2x = 84
x = 42
(3y + 5) + (2x + 1) = 180 (Linear Pair Theorem)
3y + 5 + (85) = 180
3y + 5 = 95
3y = 90
y = 30
Answer:
x = 42, y = 30
Step-by-step explanation:
Alternate angles are equal so
85 = 2x + 1
2x = 84
x = 42°
Linear pair
(3y + 5) + (2x + 1) = 180
3y + 5 + 85 = 180
3y = 90
y = 30°
So I think the answer is x = 42° and y = 30°.
Hope it helps.
f(x) = x² - 4 and g(x)= x^2 + 1 are sketched 10.1.2 Determine the length of DB .
x⁴ - 8x² + 17 is the function that represents the fog(x).
To find fog(x), we first need to find g(f(x)), which means we need to substitute the expression for f(x) into the expression for g(x):
g(f(x)) = g(x² - 4)
Now, we can substitute the expression for g(x) into the above expression:
g(f(x)) = (x² - 4)² + 1
Expanding the squared term, we get:
g(f(x)) = x⁴ - 8x² + 17
Therefore, fog(x) = g(f(x)) = x⁴ - 8x² + 17.
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Complete question:
f(x) = x² - 4 and g(x)= x^2 + 1 find fog(x).
a rectangular prism has dimensions 8ft by 3ft by 5ft what is the surface area of the prism
We have 6 faces of a rectangular prism
For the rectangle 8 ft x 3ft we have 2 equals
The area of one is
\(A_1=l\times w=8\times3=24ft^2\)for the rectangle 8 ft x 5ft we have two equals
the area of one is
\(A_2=l\times w=8\times5=40ft^2\)for the rectangle 5ft x 3ft we have two equals
the area of one
\(A_3=l\times w=5\times3=15ft^2\)The surface area is
\(SA=2(A_1)+2(A_2)+2(A_3)\)\(SA=2(24)+2(40)+2(15)\)\(SA=158ft^2\)12
The solution to the system of equations below
is (x,y).
3x+y=13
2x - 4y = 18
What is the value of x?
A bag contains 5 RED beads, 3 BLUE beads, and 4 GREEN beads. If a single bead is picked at random, what is the probability
Answer:
total number of beads :-
5+3+4=12
probability is :-
number of times a specific outcome has occurred
total number of possible outcomes
red beads - 5/12
blue beads - 3/12
green beads - 4/12
the above given fractions are the probabilities of each color bead.
Step-by-step explanation:
hope this helps, if yes please can u give me a brainly?
i would really apreciate it...
have a great day ahead :)
There are 6 triangles and 2 circles. What is the simplest ratio of circles to triangles?
Answer:
6:2
Step-by-step explanation:
Answer:
6:2
Step-by-step explanation:
This simply means for every 6 triangles there are going to be 2 circles, so if you had 12 triangles there would be 4 circles.
So think of it kinda like:
6 triangles = 2 circles and so on.
x ( x + 4 ) − 3 = 4 ( x + 19.5 )
Answer:
9
Step-by-step explanation:
What is the constant of proportionality represented on this
graph?
Answer:
A
-------------------------w
Its hitting the 1 on on the y and 2 on the x
how do i solve this problem?
Option A correctly describes the area of the graph of the function.
How is an area of the graph calculated?
The area of a graph is the area under the function curve enclosed within the X-axis of the graph. Thus, it is the area of the figure formed by enclosing the function graph with the X-axis.
It is the integration of the function polynomial of the possible values of x that the function curve lies in.
Here the function equation is : \(f(x) = ( 25 - x^{2} )\)
From the figure, we can see that the value of x varies from -5 to 5.
Initial x-value of integration = minimum value of x
= -5
Final x-value of integration = maximum value of x
= 5
Thus, the area of the graph can be correctly calculated as. :
\(Area = \int\limits^{maxX}_ {minX} \, f(x)dx\)
\(Area = \int\limits^5_ {-5} \, (25-x^{2} )dx\)
Hence, Option A correctly calculates the area of the graph given.
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If a student is taking classes, math, English, P.E., history, biology and Spanish, then what is the chance that the student will take math period? Assume that there are six periods in one day.
10%
17%
25%
60%
Answer:
60%
Step-by-step explanation: i hope this heple
\
What is the maturity date of a loan for $6000 at 15% exact interest taken out on June 7? Amount of interest is $180
Answer:
August 18th
Step-by-step explanation:
What is the maturity date of a loan for $6000 at 15% exact interest taken out on June 7? Amount of interest is $180
We use the simple interest formula
Simple Interest = Principal × Rate × Time
Simple Interest = $180
Principal = $6000
Rate = 15% = 0.15
Time = ?
Time = Simple Interest/Principal × Rate
= $180/$6000 × 0.15
=180/900
=0.2 years
1 year = 12 months
0.2 year =
12 × 0.2
= 2.4 months
1 month = 30 days
2.4 months =
= 72 days
June 7 + 72 days = August 18
Can someone help please?
ASAP
Answer:
Angle A = tan^-1(11/5)
Angle C = 90 - tan^-1(11/5)
AC = sqrt(146)
Step-by-step explanation:
As this is a right triangle, we can apply the Pythagorean theorem a^2 + b^2 = c^2, where c is the hypotenuse while a and b are the legs, to solve for AC.
11^2 + 5^2 = AC^2
121 + 25 = AC^2
146 = AC^2
sqrt(146) = AC^2
Next, to find angle A, we can use one of the trigonometric functions. Let’s use tangent for simplicity. Tangent of an angle is “opposite divided by adjacent”. If we set the angle to A, opposite is side BC and the adjacent is side AB. Thus, tan(A) = 11/5 and tan^-1(11/5) = A.
Since the sum of angles in a triangle is 180, we can find angle C by setting up this equation: C = 180 - 90 - tan^-1(11/5), which is 90 - tan^-1(11/5)