Answers
Area of rectangle = l * w
4 * 5 = 20 in^2
5 * 12 = 60 in^2
7 * 11 = 77 in^2
Add them together
20 + 60 + 77 = 157 in^2
(Sorry if the picture isn’t neat)
Related Questions
Suppose 14% of the listeners of a radio station listen to it while they are at work. What is the approximate standard deviation of the sampling distribution of the proportion for the sample of size 85?
Answers
Standard Deviation (σ) = √[(p * (1 - p)) / n]
where:
p is the proportion of listeners (14% or 0.14 in decimal form),
1 - p is the complement of the proportion,
n is the sample size.
Substituting the values into the formula:
σ = √[(0.14 * (1 - 0.14)) / 85]
Calculating this expression gives us the approximate standard deviation of the sampling distribution of the proportion for the given sample size.
Completing proofs involving linear pairs.
Answers
Answer:
Try a,d,b,a
Step-by-step explanation:
Can you construct an example of a discrete random variable which does not have a finite expectation?
Answers
Throwing a coin until it lands tails is an example of a discrete random variable which does not have a finite expectation.
For the given question,
A discrete random variable is a type of variable whose value depends upon the numerical outcomes of a certain random phenomenon. Discrete random variables are always whole numbers, which are easily countable.
It is a variable that can take on a finite number of distinct values and takes numerous values. It is also known as a stochastic variable. When you consider probabilistic experiments with infinite outcomes, it is easy to find random variables with an infinite expected value.
Let X be a random variable that is equal to 2ⁿ with probability 2⁻ⁿ (for positive integer n). Then,
\(E(X)=\sum_{n:1}^{\infty} |2^{-n}2^{n}|\)
⇒ \(E(X)=\sum_{n:1}^{\infty} (1)\)
⇒ \(E(X)=\infty\)
Consider the following example,
You throw a coin until it lands tails.
Let n be the number of heads
Then number of heads can be found by, 2ⁿ
Now, the expected value function is
\(E(X)=\frac{1}{2}(2^{0} )+ \frac{1}{4}(2^{1} )+....\)
⇒ \(E(X)=\sum_{n:1}^{\infty} |2^{-n}2^{n-1}|\)
⇒ \(E(X)=\sum_{n:1}^{\infty} \frac{1}{2}\)
⇒ \(E(X)=\infty\)
Since the number of outcomes is infinite. The probability of each outcome decreases exponentially.
Hence we can conclude that throwing a coin until it lands tails is an example of a discrete random variable which does not have a finite expectation.
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When Edna's phone is fully charged, it can operate for up to 18 hours before running out of battery. It has been 6 hours since Edna's phone was fully charged. Let x represent how many more hours Edna's phone can operate without running out of battery. Which inequality describes the problem? 6 + x < 18 6 +xs 18 Solve the inequality. Then, complete the sentence to describe the solution. Edna's phone can operate for up to more hours without running out of battery.
Answers
Edna's phone can operate for up to 12 more hours without running out of battery.
In Mathematics, the relationship between two values that are not equal is defined by inequalities. Inequality means not equal. Generally, if two values are not equal, we use “not equal symbol (≠)”. But to compare the values, whether it is less than or greater than, different inequalities are used.
fully charged
T = 18Hr
It has been 6 hours since Edna's phone was fully charged.
remaining battery =18- 6= 12Hr
x=12Hr
6 + x < 18
6 +x > 18
neither nor.
both equations are wrong.
6 +x = 18
Edna's phone can operate for up to 12 more hours without running out of battery.
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Which statement correctly describes the location of the circumcenter of a triangle?
A) The circumcenter is on the inside of an obtuse triangle.
B) The circumcenter is on one of the vertices of an acute triangle.
C) The circumcenter is on the outside of an obtuse triangle.
D) The circumcenter is on one of the sides of an acute triangle.
Answers
Answer:
C) The circumcenter is on the outside of an obtuse triangle.
Step-by-step explanation:
You want to know where the circumcenter is in relation to the sides and vertices of different triangles.
CircumcenterThe circumcenter of a triangle is the center of the circle through its vertices. As such, it will never lie on a vertex of the triangle.
As you can see in the attached figure, the circumcenter of an acute triangle is inside the triangle.
For a right triangle, the circumcenter is the midpoint of the hypotenuse.
The circumcenter of an obtuse triangle is outside the triangle.
__
Additional comment
The circumcenter is located at the point where the perpendicular bisectors of the sides meet.
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Three coffees and two muffins cost a total of 7 dollars. Two coffees and four muffins cost a total of 8 dollars. What is the individual price for a single coffee and a single muffin?
Answers
wAnswer:
e
Step-by-step explanation:
how do we determine the significance of the slope in regression?
Answers
The significance of the slope in regression can be determined by conducting a hypothesis test
The slope of the regression line in a regression analysis shows how dependent variable changes as the independent variable increases by a unit. A hypothesis test on a slope coefficient, commonly referred to as the beta coefficient or the regression coefficient, can be used to ascertain the significance of the slope. The slope coefficient is compared to a null hypothesis value of zero in the hypothesis test.
The null hypothesis is rejected and it is determined that there is a significant association between the independent and dependent variables if the p-value for the slope coefficient is less than the significance threshold. Therefore, slope is not equal to zero and there is an association amongst changes in the independent variable and those in the dependent variable.
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Using the Distance Formula and the Pythagorean Theorem, find the distance, to the nearest tenth, from F
(3,2) to G (-5,-2).
The distance from F to G is
Answers
Answer:
d = 8.9Step-by-step explanation:
\(d=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}\\\\(3,2)\quad\implies\quad x_1=3\,,\ \ y_1=2\\\\(-5,-2)\quad\implies\quad x_2=-5\,,\ \ y_2=-2\\\\d=\sqrt{(3+5)^2+(2+2)^2}=\sqrt{8^2+4^2}=\sqrt{64+16}=\sqrt{80}\approx8.9\)
1.5 X 9.34 ple help it’s for 25 points
Answers
Answer:
wnwhhwhwhwhw The answer is 14.01
Answer:
14.01
Step-by-step explanation:
true or false? "Because in a randomized controlled trial (RCT), the assignment is random, therefore there is no coverage bias---by definition" g
Answers
The statement "Because in a randomized controlled trial (RCT), the assignment is random, therefore there is no coverage bias---by definition" g is false because, it is important to consider both randomization and other factors when assessing the potential for bias in an RCT.
Random assignment in an RCT can help to reduce selection bias, but it does not guarantee the absence of coverage bias.
Coverage bias can occur if the participants who are enrolled in the trial do not represent the population to which the results will be generalized.
For example, if the trial only includes participants who are healthier or more compliant than the typical patient, the results may not be applicable to the broader population.
Therefore, it is important to consider both randomization and other factors when assessing the potential for bias in an RCT.
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Suppose you are charged a $10 per month base charge for your electrical service. You are also charged an additional $0.08 for every kwh of electricity you use. The cost is an example of a mixed cost. variable cost. fixed cost. step cost.
Answers
The cost described in the scenario is an example of a mixed cost.
A mixed cost consists of both fixed and variable components. In this case, the $10 per month base charge represents the fixed component of the cost. This charge remains constant regardless of the amount of electricity consumed. It covers the basic service and is not influenced by usage levels.
On the other hand, the additional charge of $0.08 per kilowatt-hour (kWh) of electricity used represents the variable component. This charge varies directly with the amount of electricity consumed. As more electricity is used, the variable cost increases proportionally.
By combining the fixed base charge and the variable charge per kWh, we get a mixed cost structure. The fixed component ensures a minimum cost for the service, while the variable component adds to the total cost based on actual usage. This combination of fixed and variable elements makes the cost a mixed cost.
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Extra points for hemo
Answers
Point B is at (1,3)
at a party, everyone shook hands with everybody else. there were 66 handshakes. How many people shook hands?
Answers
Answer:
12
Step-by-step explanation:
0 + 1 + 2 + 3+ 4 + 5 + 6 + 7 +8 + 9 + 10 + 11 seems to equal 66. That means there are 11 + 1 = 12 people (don’t forget to count the person who shakes 0 hands)
All other units of measure are defined and compared to the four basic measurements of: _____?
Answers
The four basic measurements that serve as the foundation for other units of measure are length, mass, time, and temperature.
Length is a measure of distance between two points, typically measured in meters (m) within the International System of Units (SI). Mass is the amount of matter in an object, measured in kilograms (kg) in the SI system. Time refers to the duration or interval between events and is measured in seconds (s) within the SI system.
Lastly, temperature is a measure of the average kinetic energy of particles in a substance, represented in degrees Celsius (°C) or Kelvin (K) in the SI system.
All other units of measure are defined and compared to these four basic measurements. For instance, speed is derived from the combination of length and time (e.g., meters per second). Similarly, force is derived from mass and acceleration, which itself is derived from the change in velocity over time (e.g., newtons).
The combination and comparison of these fundamental measurements enable scientists, engineers, and other professionals to quantify and analyze various phenomena in the physical world.
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Solve for x and y
Systems of equations
Answers
Answer:
Same line, many solutions.
Step-by-step explanation:
-1/2x + 3y = 4 Multiply each term by 2 to get remove the fraction.
The new equation is -x + 6 = 8
-x + 6 = 8 multiply by 2 -2x + 12y = 16
2x - 12y = -16 do not change 2x - 12y = -16
0 + 0 = 0
0 = 0
Answer: Same line, many solutions.
which is the graph of 2x - 4y > 6?
Answers
Answer:
I think it is the fourth option
Step-by-step explanation:
Answer: its the fourth option
Step-by-step explanation:just trust me
To combat red-light-running crashes – the phenomenon of a motorist entering an intersection after the traffic signal turns red and causing a crash – many states are adopting photo-red enforcement programs. In these programs, red light cameras installed at dangerous intersections photograph the license plates of vehicles that run the red light. How effective are photo-red enforcement programs in reducing red-light-running crash incidents at intersections? The Virginia Department of Transportation (VDOT) conducted a comprehensive study of its newly adopted photo-red enforcement program and published the results in a report. In one portion of the study, the VDOT provided crash data both before and after installation of red light cameras at several intersections. The data (measured as the number of crashes caused by red light running per intersection per year) for 13 intersections in Fairfax County, Virginia, are given in the table. a. Analyze the data for the VDOT. What do you conclude? Use p-value for concluding over your results. (see Excel file VDOT.xlsx) b. Are the testing assumptions satisfied? Test is the differences (before vs after) are normally distributed.
Answers
However, I can provide you with a general understanding of the analysis and assumptions typically involved in evaluating the effectiveness of photo-red enforcement programs.
a. To analyze the data for the VDOT, you would typically perform a statistical hypothesis test to determine if there is a significant difference in the number of crashes caused by red light running before and after the installation of red light cameras. The null hypothesis (H0) would state that there is no difference, while the alternative hypothesis (Ha) would state that there is a significant difference. Using the data from the provided table, you would calculate the appropriate test statistic, such as the paired t-test or the Wilcoxon signed-rank test, depending on the assumptions and nature of the data. The p-value obtained from the test would then be compared to a significance level (e.g., 0.05) to determine if there is enough evidence to reject the null hypothesis.
b. To test if the differences between the before and after data are normally distributed, you can employ graphical methods, such as a histogram or a normal probability plot, to visually assess the distribution. Additionally, you can use statistical tests like the Shapiro-Wilk test or the Anderson-Darling test for normality. If the data deviate significantly from normality, non-parametric tests, such as the Wilcoxon signed-rank test, can be used instead.
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Identify the area of the figure rounded to the nearest tenth
Answers
Answer:
118.7 inches squared.
Step-by-step explanation:
What is the area?The area is the total space taken up by a flat (2-D) surface or shape. The area is always measured in square units.
What is diameter?Diameter is the length across the entire circle, the line splitting the circle into two identical semicircles.
The expression for solving the area of a circle is A = π × \(r^{2}\).
To solve for the semicircle above, we can divide the diameter into 2 to get the radius.
12 ÷ 2 = 6So, the radius of the upper semicircle is 6 inches.
If the radius of a circle is 6 inches, then you can substitute r for 6 into the formula.
A = π × \(6^{2}\)This simplifies to A = 36π. If a semicircle if half the size of a normal circle, then it will be A = 18π, because 36 ÷ 2 = 18.
To solve for the lower semicircle, we can do the same this as we did above.
A = π × \(r^{2}\)But wait, we don't know the radius or diameter!
No worries! To solve for the diameter of the circle, we can take the line that is parallel to the semicircle (the one that has a length of 12in) and subtract 6 from it. We subtract 6 from it because the semicircle takes up the remaining length of the line, not including the 6in.
To solve for the lower semicircle, we can divide the diameter by 2 to get the radius.
6 ÷ 2 = 3So, the radius of the circle is 3.
Now we can insert 3 into the expression.
A = π × \(3^{2}\)This simplifies to A = 9π. If a semicircle if half the size of a normal circle, then it will be A = 4.5π because like above, 9 ÷ 2 = 4.5.
Adding the two semicircles together:
18π + 4.5π = 22.5π22.5 × π ≈ 70.6858So, the area of both semicircles is approximately 70.6858 square inches.
To solve for the area of a rectangle we use the expression:
A = length × widthInserting the dimensions of the rectangle:
8 × 6 = 48So, the area of the rectangle is 48 square inches.
Adding the two areas together:
70.6858 + 48 = 118.6858 ≈ 118.7Therefore, the area of the entire figure, rounded to the nearest tenth is \(118.7\) \(in^{2}\).
Puzzle one
determine if the following relations are functions or not. to
break the code each function has a value of 4 and each non-
function has a value of 8. find the product of all the odd
problems and the product of all the even problems, then find
the difference of the two products to break the code!
Answers
Relations 1 and 7 are not a function and relations 2, 3, 4, 5, 6 and 8 are functions. The product of all the odd problems and the product of all the even problems are 1024 and 256 simultaneously. The difference of the two products to break the code is 768.
A function from set A to set B is a mapping from A to B which maps each and every element in A uniquely to set B.
It is not a function because 4 is getting mapped to a and c both. Value = 8It is a function because each element of {1, 2, 3, 4} is getting mapped uniquely to {a, b, c}. Value = 4Yes, It is a function. Value = 4Yes, It is a function. Value = 4Yes, It is a function. Value = 4Yes, It is a function. Value = 4No, it is not a function the point maps to 2 different values in y. Value = 8Yes, it is a function. Value = 4Product of odd problems = 8 x 4 x 4 x 8 = 1024
Product of even problems = 4 x 4 x 4 x 4 = 256
Difference = 1024 - 256 = 768
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The product of 3 positive numbers is equal to 12. Of these 3positive numbers, n are not integers. Which of the following is acomplete list of the possible values of n ?a) 0,1b) 1,2c) 3, 4,5d) 0, 1,2,3
Answers
The possible values of n are 1 and 2, as there can be two non-integer positive numbers whose product is equal to 12. Option B is correct.
All the possible ways to express 12 as a product of three positive numbers:
1 x 2 x 6
1 x 3 x 4
To identify which products have two non-integer factors.
From the above list, we see that only the first product, 1 x 2 x 6, has two non-integer factors (2 and 6).
From the following complete list of the possible values of n if the product of 3 positive numbers is equal to 12 and 3 positive numbers of n are not integers then answer is option (b) 1, 2.
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Find the equation of the line in slope-intercept form that passes through the point (4, -2) and has slope m = -2. Explain how you arrived at your response.
Answers
Answer:
y + 2 = - 2(x - 4)
Step-by-step explanation:
The equation of a line in slope- intercept form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = - 2 and (a, b ) = (4, - 2 ) , then
y - (- 2) = - 2(x - 4) , that is
y + 2 = - 2(x - 4)
help me with this pls
Answers
Answer:
Yes they both = 125
Step-by-step explanation:
A fruit seller bought 160 kg of apples at Rs. 32 per kg. He sold one fourth of them at Rs. 40 per kg and sold the rest at Rs. 31 per kg. Find his profit or loss.
Answers
Answer:
A fruit seller bought 160 kg of apples at Rs. 32 per kg. He sold one fourth of them at Rs. 40 per kg and sold the rest at Rs. 31 per kg. Find his profit or loss.
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The equation y = 8x represents the
relationship between the amount of
time Shanay takes to weave thread
into fabric and the number of rows.
How long will it take Shanay to weave
72 rows of fabric at this constant rate?
Answers
X=9
It will take 9
Consider the expression 3⋅2 ^ t Evaluate the expression when t = 4.
Answers
When t = 4, the expression 3⋅2ᵗ evaluates to 48.
What is the expression?Any mathematical statement with variables, numbers, and an arithmetic operation between them is called an expression or an algebraic expression. For instance, the expression 4m + 5 has the terms 4m and 5 as well as the variable m of the given expression, all of which are separated by the arithmetic sign +.
An expression consists of one or more numbers or variables along with one more operation.
When t=4, the expression 3⋅2ᵗ evaluates to:
3⋅2⁴ = 3⋅16 = 48
Hence, when t = 4, the expression 3⋅2ᵗ evaluates to 48.
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2x + 3y = 12
2x - y = 4
Answers
Answer:
The point of intersection between 2x+3y=12 and 2x-y=4 is (3,2)
Step-by-step explanation:
What is the perimeter, in units, of a rectangle of length fraction 1 over 5 unit and width fraction 1 over 2 unit
Answers
Therefore, the perimeter of the rectangle is 7/5 units.
To find the perimeter of a rectangle, you add up the lengths of all its sides. In this case, the length of the rectangle is 1/5 unit, and the width is 1/2 unit.
The formula for the perimeter of a rectangle is:
Perimeter = 2 * (Length + Width)
Substituting the given values:
Perimeter = 2 * (1/5 + 1/2)
To add the fractions, you need to find a common denominator:
Perimeter = 2 * (2/10 + 5/10)
Perimeter = 2 * (7/10)
Now, multiply the numerator by 2:
Perimeter = (2 * 7) / 10
Perimeter = 14/10
Simplifying the fraction:
Perimeter = 7/5
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meridians of identify degrees east and west of the . these lines are / are not (circle) scientifically based. why/why not?
Answers
The meridians of longitude identify the degrees east and west of the Prime Meridian. These lines are scientifically based because they are determined by the Earth's rotation and provide a consistent and accurate system for navigation, mapping, and timekeeping.
1. The meridians of longitude are imaginary lines that run vertically from the North Pole to the South Pole on the Earth's surface.
2. The Prime Meridian, located at 0 degrees longitude, serves as the starting point for measuring degrees east and west.
3. The degrees of longitude are divided into 360 equal parts, with each degree representing one hour of the Earth's rotation.
4. The meridians of longitude allow us to determine specific locations on the Earth's surface and measure the angular distance from the Prime Meridian.
5. The scientific basis of meridians of longitude enables global coordination and facilitates activities such as international travel, communication, and scientific research.
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What are the measures for angle b,c,and d
Answers
b = 25
c = 25
d = 75
Explanation:
a = 180 - (60 + 55) = 180 - 115 = 65 (Angles on a straight line)
b = 90 - a = 90 - 65 = 25 (Angles in a right triangle)
c = b = 25 (Vertically Opposite Angles)
d = 90 - 15 = 75
The sears tower in chicago is 443 m tall. Joe wants to set the world’s stair climbing record and runs all the way to the roof of the tower. If joe’s average upward speed is 0. 60 m/s, how long will it take joe to climb from street level to the roof of the sears tower?.
Answers
It will take Joe 738.3 seconds (12.3 minutes) to climb from street level to the roof of the sears tower.
What is speed?The definition of speed is the rate at which an object's position changes in any direction. Speed is defined as the ratio of distance traveled to time spent traveling. Because it has only one direction and no magnitude, speed is a scalar quantity. Speed is a measure of how quickly something moves or is done, or how fast something moves. A car traveling at 45 miles per hour is an example of speed. Someone cleaning a room in 10 minutes is an example of speed. A jaguar's speed is an example of speed.To find how long will it take joe to climb from street level to the roof of the sears tower:
If Joe moves at 0.6 m/s in the vertical direction, the total distance he must cover is 443 meters in the vertical direction. The formula for average speed is now:Average speed = total distance / total timeTotal time = total distance / average speedTotal time = 443/0.6Total time = 738.3 secondsTherefore, it will take Joe 738.3 seconds (12.3 minutes) to climb from street level to the roof of the sears tower.
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