Answer:
Step-by-step explanation:
Given the circumference of Circle K = π
circumference of Circle L = 4π
Ratio of their circumferences = Ck/Cl
Ratio of their circumferences = π/4π
Ratio of their circumferences = 1/4 = 1:4
For their radii
C = 2πr
for circle k with circumference π
π = 2πrk
1 = 2rk
rk = 1/2
for circle l with circumference 4π
4π = 2πr
4 = 2r
r = 4/2
rl = 2
ratio
rk/rl = 1/2/2
rk/rl = 1/4 = 1:4
for the areas
Area of a circle = πr²
for circle k
Ak = π(1/2)²
Ak = π(1/4)
Ak = π/4
for circle l
Al = π(2)²
Al = 4π
Ratio of their areas
Ak/Al = π/4/(4π)
Ak/Al = π/16π
Ak/Al = 1/16 = 1:16
All the outcomes contained in one or the other of two random events, or possibly in both, make up:
Question options:
the intersection of two events
the union of two events
the probability space of an experiment
the events of an experiment
The outcomes contained in one or the other of two random events, or possibly in both, make up the union of two events.
In probability theory, the union of two events refers to the set of outcomes that are present in either one or both of the events. It represents the combination of all possible outcomes from the individual events.
For example, let's consider two events A and B. The union of these events, denoted as A ∪ B, includes all the outcomes that belong to event A, event B, or both. It represents the combined set of outcomes from the two events.
Mathematically, the union of two events is defined as:
A ∪ B = {x | x ∈ A or x ∈ B}
So, when we talk about the outcomes contained in one or the other of two random events, or possibly in both, we are referring to the union of those events. The union captures all the possible outcomes that can occur in either event or in both events simultaneously.
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evaluate the piecewise function at the given values of the independent variable.g(x) = x+5 if x >= -5-(x+5) if x < -5a) g(0)b) g(-7)c) g(2)
The solution of the piecewise function at the given values of the independent variable g(0) is 5, g(-7) is 12 and g(2) is 7.
This is an example of a piecewise function, which is a function composed of two or more parts, each part being defined by a separate equation.
In this function, the first part is defined as g(x) = x+5 if x >= -5, and the second part is defined as g(x) = -(x+5) if x < -5.
To evaluate the function at the given values of the independent variable, we can simply substitute the values into the appropriate equation.
At x = 0,
=> g(0) = 0+5 = 5.
At x = -7,
=> g(-7) = -(-7+5) = 12.
And at x = 2,
=> g(2) = 2+5 = 7.
Therefore, the values of the function are 5, 12, and 7 respectively
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Drag the tiles to thDrag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match the slopes and the y-intercepts to the lines of best fit on the scatter plots.
The rate of change is ,
and the initial value is .
The rate of change is ,
and the initial value is .
The rate of change is ,
and the initial value is .
The rate of change is ,
and the initial value is .
The rate of change is ,
and the initial value is .
Graph shows line and 7 points plotted on a coordinate plane. Line goes through (0, 3) and (5, 6). Points are approximately at (1, 3.8), (2, 4), (3, 4.5), (4, 5.5), (5, 6.1), (6, 6.1), and (7, 7).
arrowRight
Graph shows downward right slant line and 7 closed points plotted on a coordinate plane. The line from (0, 5) till (8, 0.2). Points are approximately at (1, 4.8), (2, 4), (3, 2.9), (4, 2.8), (5, 1.9), (6, 1.2), and (7, 1).
arrowRight
Graph shows line and 4 points plotted on a coordinate plane. Line goes through (0, 5) and (3, 10). Points are approximately at (1, 6.5), (1.9, 8.5), (3.1, 9.8), and (4, 12).
arrowRight
Graph shows line and 5 points plotted on a coordinate plane. Line goes through (0, 5) and (3, 0). Points are approximately at (0.8, 4), (1, 3.1), (1.6, 2.6), (1.9, 1.4), and (2.8, 0.8).
arrowRight
e correct boxes to complete the pairs. Not all tiles will be used.
Match each equation with its y-intercept.
The rate of change (slopes) and initial value (y-intercepts) are as follows:
The initial value is 20, and the rate of change is -5.The initial value is 20, and the rate of change is 4.The initial value is 15, and the rate of change is -3. The initial value is 15, and the rate of change is 5.What is a scatter plot?A scatter plot can be defined as a type of graph which is used for the graphical representation of the values of two variables, with the resulting points showing any association (correlation) between the data set.
What is a line of best fit?A line of best fit is also referred to as a trend line and it can be defined as a statistical (analytical) tool that is used in conjunction with a scatter plot, in order to determine whether or not there's any association (correlation) between a data.
By critically observing the graph which models the given data, we can logically deduce the following rate of change (slopes) and initial value (y-intercepts):
The initial value is 20, and the rate of change is -5.The initial value is 20, and the rate of change is 4.The initial value is 15, and the rate of change is -3. The initial value is 15, and the rate of change is 5.Read more on scatterplot here: brainly.com/question/6592115
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What is the intersecting point of these two lines?
1. y = 3/4x + 6
2. y = x + 1
ill give 100 pts Help me pleasseee - Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.
Answer:
One booster pack is worth 9 cards and one premade deck is worth 37 cards.Step-by-step explanation:
We know that:
9x + 7y = 340 cards4x + y = 73 cardsy = Cost of premade decks (In cards)x = Cost of booster packs (In cards)Work:
9x + 7y = 340 cards4x + y = 73 cards
4(9x + 7y = 340 cards)9(4x + y = 73 cards)
36x + 28y = 340 x 4 cards36x + 9y = 73 x 9 cards
19y = 1360 - 65719y = 703y = 703/19 = 37This means that 1 premade deck is worth 37 cards. Now, let's substitute the value of y into the first equation to find x.
9x + 7y = 340 cards=> 9x + 7(37) = 340 cards=> 9x + 259 = 340 cards=> 9x = 81 cards=> x = 9 cardsHence, one booster pack is worth 9 cards and one premade deck is worth 37 cards.
Hoped this helped.
\(BrainiacUser1357\)
Answer:
Step-by-step explanati
I don't even know my g
Evaluate each expression for a=4, b=-3 , and c=10 .
4 a+b-|2 c|
To evaluate the expression 4a + b - |2c| for the given values a = 4, b = -3, and c = 10, we substitute the values and simplify. The final result is -7.
Given the expression 4a + b - |2c|, we substitute the values a = 4, b = -3, and c = 10 into the expression.
Replacing the variables, we have:
4(4) + (-3) - |2(10)|.
Simplifying inside the absolute value, we have:
4(4) + (-3) - |20|.
Next, we evaluate the absolute value of 20, which is 20 since it is a positive number.
Continuing with the simplification, we have:
16 - 3 - 20.
Subtracting 3 from 16 gives us:
13 - 20.
Finally, subtracting 20 from 13 yields:
-7. Therefore, the evaluated expression 4a + b - |2c|, with a = 4, b = -3, and c = 10, is equal to -7.
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1. What's the product of 3 2/3 and 14 2/5?
I need some answers be quick pls. If you get it right I will give you brainliest
Step-by-step explanation:
multiple the power and real number
Answers;
a) Multiply 2 by 3: 6ab.
b) Multiply \(c^{5}\) by c by adding the exponents: c^6 or \(c^{6}\).
c) Simplify the expression. 10y^7 or \(10y^{7}\).
d) Simplify the expression. 12g^4h^5 or \(12g^{4}h^{5}\).
There were 234 roses growing in the back garden. If 50% of the roses were red. How many were not red?
Answer:117
Step-by-step explanation:
I’m good at math
Answer:
117 Roses
Step-by-step explanation:
234 *0.5 = 117
Show all the steps!
3+2x=13-3x
Answer:
x=2
Step-by-step explanation:
3+2x=13-3x
+3x +3x
3+5x=13
-3 -3
5x=10
/5 /5
x=2
Hope this helps! :D
Answer:
5x = 10 or x = 2 if your teacher wants x by itself.
Step-by-step explanation:
1. Simplify! Is there anything to simplify? In this case no, so we can move to the next step! Equation should look like this: 3 + 2x = 13 - 3x
2. Get rid of 3, we need to find a way to get 2x by itself before we do anything else! Equation should look like this: 2x = 10 - 3x
( Make sure to get rid of 3 units on the other side so it's a legal move)
3. Get rid of -3x, we also need to get 10 by itself as it holds the answer we're looking for! Equation should look like this: 5x = 10
( Make sure to add 3x on the other side so it's a legal move!)
4. This is optional, if your teacher wants you to find out what x by itself is this is how you do it! DIVIDE!!! Divide 5x by 5 getting you x, and divide 10 by 5 getting you 2! Equation should look like this: x = 2
Keep in mind I'm not sure if your teacher wants you to do things differently, or if there's a different operation or rule to use as I'm in middle school! If I got something wrong please correct me, as I don't want to spread misinformation.
A square based tent house has length of base 20m and it is in the form of cuboid upto the height of 10m and then a pyramid with equal base. The tent house contains4800m3 air. Find the total cost of canvas required to make the tent at the rate of Rs 15 per square meter.A square based tent house has length of base 20m and it is in the form of cuboid upto the height of 10m and then a pyramid with equal base. The tent house contains4800m3 air. Find the total cost of canvas required to make the tent at the rate of Rs 15 per square meter. helpp
The total cost of canvas required to make the tent at the rate of Rs. 15 per square meter is; Rs. 24,997
What is the area of a composite shape?We are told that the bottom part of the tent house is a square cuboid up to a height of 10 m.
Thereafter, it is a pyramid.
Now, formula for volume of a cuboid is;
V = lwh
V = 20 * 20 * 10
V = 4000 m³
Formula for volume of a pyramid is;
V = lwh/3
V = (20 * 20 * h)/3
V = 400h/3
Total volume is 4800 of the entire tent house. Thus;
4000 + (400h/3) = 4800
400h/3 = 800
h = (800 * 3)/400
h = 6 m
Now, from online calculation, the surface area of the pyramid excluding the base is;
TSA_p = 466.48 m²
Total surface area of cuboid excluding the top is;
S.A = 1200 m²
Total surface area of canvas = 1200 + 466.48 = 1666.48 m²
Since cost per sq.m is Rs. 15 per m², then;
Total cost = 15 * 1666.48
Total Cost = Rs. 24,997
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Use the distributive property to remove the parentheses. Simplify your answer as much as possible.
A teacher chooses 4 different students to answer questions. there are 21 sophomores and 8
freshman. find the probability of the teacher choosing 2 sophomores, then 2 freshman.
The probability of the teacher choosing 2 sophomores, then 2 freshmen is approximately 0.04136 or 4.136%.
To find the probability of the teacher choosing 2 sophomores, then 2 freshmen, we need to calculate the probability of each event and multiply them together.
Let's start with the probability of choosing 2 sophomores first.
The total number of students to choose from is 21 sophomores + 8 freshmen = 29 students.
The probability of choosing the first sophomore is 21/29 since there are 21 sophomores out of the total 29 students.
After choosing the first sophomore, there are now 20 sophomores left out of 28 remaining students.
Therefore, the probability of choosing the second sophomore is 20/28.
To find the probability of choosing 2 sophomores, we multiply these probabilities together:
(21/29) * (20/28) = 420/812 ≈ 0.517
Now, let's move on to the probability of choosing 2 freshmen.
After selecting 2 sophomores, there are 29 - 2 = 27 students left to choose from.
The probability of choosing the first freshman is 8/27 since there are 8 freshmen out of the remaining 27 students.
After choosing the first freshman, there are now 7 freshmen left out of 26 remaining students.
Therefore, the probability of choosing the second freshman is 7/26.
To find the probability of choosing 2 freshmen, we multiply these probabilities together:
(8/27) * (7/26) = 56/702 ≈ 0.08
Finally, to find the probability of the teacher choosing 2 sophomores, then 2 freshmen, we multiply the probabilities of each event together:
(0.517) * (0.08) ≈ 0.04136
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please help me as soon as possible! :)
Answer:
-8,-7,-5,-3,-2
-80,-40,20,60
Step-by-step explanation:
Tell whether the ratios form a proportion.
13,721
Given: m∠AEB = 45°
∠AEC is a right angle.
Prove: Ray E B bisects ∠AEC.
3 lines extend from point E. A horizontal line extends to the left to point A and a vertical line extends up to point C. Another line extends halfway between the other 2 lines to point B. Lines A E and E C form a right angle.
Proof:
We are given that m∠AEB = 45° and ∠AEC is a right angle. The measure of ∠AEC is 90° by the definition of a right angle. Applying the ______________
gives m∠AEB + m∠BEC = m∠AEC. Applying the substitution property gives 45° + m∠BEC = 90°. The subtraction property can be used to find m∠BEC = 45°, so ∠BEC ≅ ∠AEB because they have the same measure. Since Ray E B divides ∠AEC into two congruent angles, it is the angle bisector.
Select a sentence to fill in the blank.
Segment addition property
angle addition postulate
reflective property
transitive property
Answer:
Answer is B. angle addition postulate
Step-by-step explanation:
-UvU-
0.3(4 − x) = x − 1.4?
Answer:
x is equal to 2
Step-by-step explanation:
simplify the equation
distribute the 0.3
0.3*4-0.3x=x-1.4
1.2-0.3x=x-1.4
get x by itself on one side
1.2+1.4=x+0.3x
simplify
2.6=1.3x
2=x
How do you solve a system of equations by elimination?
How do you solve a system of equations by substitution?
Answer: IF you have two equations with the 2 variables, x and y, you can substitute one y-value with the other, then solve.
Step-by-step explanation: For example:
y = 2x + 4
3x+y = 9
We can substitute the value of y from the first equation, 2x + 4, into the second equation. So, the second equaton becomes:
3x + 2x + 4 = 9
Now solve for x:
5x + 4 = 9
5x = 5
x = 1
This value of x then can be used to find y, by substituting in the value "1" for x in the first equation:
y = 2x + 4 = 2(1) + 4 = 2 + 4 = 6
So, the solution to this linear system is (1, 6)
factorise: p² - 9
for brainliest
Find the area of the shaded region.
150
7 cm
A = [?] cm2
Enter a decimal rounded to the nearest tenth.
Answer:
102.0
Step-by-step explanation:
The area of the shaded region will be 3521.14 cm². It is obtained by subtracting total area from unshaded region.
How to find area of the shaded region?
The difference between the area of the complete polygon and the area of the unshaded section inside the polygon is the shaded region's area is the area of the shaded region.
The total area of the region is;
A=πr²
A=3.14×7²
A=153.86 cm²
The area of unshaded section;
A₂=r²(α/2)
A₂=7²(150/2)
A₂=3675
The area of the shaded region is;
Area of shaded region=Total area - area of unshaded region
Area of shaded region=3675 -153.86
Area of shaded region=3521.14 cm²
Hence, the area of the shaded region will be 3521.14 cm².
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in some complex production processes, such as nuclear power plants, some inputs have to be treated as being fixed even in the long run. group of answer choices a. True b. False
True. In complex production processes like nuclear power plants, certain inputs are considered fixed even in the long run.
In the context of complex production processes, some inputs are treated as fixed because they cannot be easily changed or adjusted in the long run due to various constraints. This is particularly true for industries with high capital costs and long-term planning requirements, such as nuclear power plants. Inputs such as major equipment, infrastructure, and regulatory compliance measures are typically considered fixed and are not easily altered or modified in response to short-term fluctuations or changes in demand.
Treating certain inputs as fixed in the long run allows for stability and consistency in planning and operation, ensuring that essential components of the production process remain constant. This approach helps maintain safety standards, regulatory compliance, and the overall integrity of the complex system, which is critical in industries like nuclear power generation where precision, reliability, and risk management are of utmost importance.
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g how many times would you expect a person selected at random to have to take the test until (s)he passes it? (if necessary, round your answer to 2 decimal places.)
The probability that a person selected at random to have the test until (s)he passes the test is, 0.03125
Given, a test occurred 5 times in a class.
we have to find that how many times a person selected at random to have the test until (s)he passes it.
the probability of getting pass in the exam be, 1/2
and similarly the probability of getting fail in the exam also be, 1/2
so, the probability that a person selected at random to have the test until (s)he passes the test is,
(1/2)^5
= 1/32
= 0.03125
Hence, the probability that a person selected at random to have the test until (s)he passes the test is, 0.03125
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help please! it'll be greatly appreciated
Answer:
B= 17.1
Step-by-step explanation:
The formula for the area of a triangle is BH1/2
The word problem gives you the area and the height
Set the problem:
369.25= 42.4(1/2)(B)
42.4(1/2)=21.2
369.25=21.2B
Divide both sides by 21.2 to isolate the variable
17.41=B
Hope this helps! :)
The variance of the scores in a sample tends to be ___ the variability of the scores in the population from which the sample was obtained.
The variance of the scores in a sample tends to be less than or equal to the variability of the scores in the population from which the sample was obtained.
When we take a sample from a population, it is expected that the variability within the sample will be somewhat representative of the variability in the population. However, due to the random nature of sampling, there is a chance that extreme scores or outliers in the population may not be fully captured in the sample, resulting in slightly reduced variability. Therefore, the sample variance typically provides an estimate that is close to the population variance but is generally smaller due to the potential sampling variability.
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Multiply. (2+√7)(1+3 √7)
The product of (2 + √7)(1 + 3√7) is 23 + 7√7.To multiply the expressions (2 + √7)(1 + 3√7), we can use the distributive property and multiply each term separately.
(2 + √7)(1 + 3√7) = 2(1) + 2(3√7) + √7(1) + √7(3√7)
Now, simplify each term:
2(1) = 2
2(3√7) = 6√7
√7(1) = √7
√7(3√7) = 3(√7)^2 = 3(7) = 21
Putting it all together:
2 + 6√7 + √7 + 21
Combining like terms:
2 + √7 + 6√7 + 21
Simplifying further:
23 + 7√7
Therefore, the product of (2 + √7)(1 + 3√7) is 23 + 7√7.
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me ayudan a resolver unos problemas en word les adjunto el archivo
it is possible to score higher than 1600 on the combined mathematics and reading portions of the sat, but scores 1600 and above are reported as 1600. suppose the distribution of sat scores (combining mathematics and reading) in 2019 was approximately normal with mean of 1018 and standard deviation of 211. what proportion of sat scores for the combined portions were reported as 1600? that is, what proportion of sat scores were actually higher than 1600? give your answer to four decimal places. proportion above 1600:
The SAT has two sections, Mathematics and Reading, and the combined score is reported on a scale of 400 to 1600. The Z-score is (1600 - 1003) / 220 = 2.37.
Normal Distribution and Standard Deviation:The normal distribution is widely used in statistics and is a useful tool for analyzing many types of observations and data in nature and the sciences. Standard deviation is a measure of the spread of the distribution and can be used in computation of various probabilities.
To determine the proportion of SAT scores that were reported as 1600 or higher, we need to find the number of standard deviations above the mean a score of 1600 would be.
Using the normal distribution and Z-scores, we can calculate the Z-score for a score of 1600, given the mean of 1003 and standard deviation of 220.
The Z-score is (1600 - 1003) / 220 = 2.37.
This means that a score of 1600 is 2.37 standard deviations above the mean.
To find the proportion of scores that are higher than 1600, we can use a standard normal table to look up the area under the normal curve to the right of the Z-score of 2.37.
This proportion is approximately 0.9906,
meaning that approximately 99.06% of the SAT scores were lower than 1600, and only 0.94% of the scores were higher and reported as 1600.
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5x – 18 > 2(4x – 15).
Answer:
x<4
Step-by-step explanation:
5x-18>2(4x-15)
5x-18> 8x-30
-18>3x-30
12>3x
4>x
x<4
it is about Name the property of the rational numbers in each of the following
The property of each given rational number operation are respectively; Commutative Property; Closure Property; Associative Property; Closure Property; Distributive Property
What is the property of the rational number?The main properties of rational numbers are:
Commutative property.Associative Property. Distributive Property.Closure property.a) The property used here is commutative property which says that;
a + b = b + a.
This tallies with the operation used on the rational numbers.
b) The property used here is called Closure Property. This is because for two rational numbers say a and b, the results of addition, subtraction and multiplication operations gives a rational number.
c) The property used here is called associative property because it states that; a * (b * c) = (a * b) * c.
d) The property used here is called Closure Property. This is because for two rational numbers say a and b, the results of addition, subtraction and multiplication operations gives a rational number.
e) The property used here is called distributive property because it states that; a * (b * c) = (ab * ac)
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How do i solve this?
9514 1404 393
Answer:
see the attachment
Step-by-step explanation:
The cost when no sugar is transported is 3250, so that is the "y-intercept". (There is no "y". The vertical axis is labeled "c", so that is the c-intercept.)
The cost per ton is 125, so that is the slope or "rate of change". Each increase of 1 unit in the value of "s" will result in an increase of 125 in the value of "c". The grid lines for "c" are 500 apart, so 1 vertical grid space will correspond to 500/125 = 4 horizontal grid spaces.
The graph starts at the left side halfway between 3000 and 3500. It goes up 1 grid square for each 4 grid squares to the right.