Answer:b=8
Step-by-step explanation:
3b=70-46
3b=24
b=24/3
b=8
Name the subset of the real numbers to which each number belongs 2/3
The given number 2/3 belongs to the subset of rational numbers.
What are subsets?
All numbers on the number line, from negative to plus infinity, are considered to be real numbers. They are breaking up into the following groups:
1. We can count the components of a set using natural numbers.
2. Natural numbers and their opposites in the negative, such as zero, are known as integers.
3. Fractions can be used to express rational numbers.
4. Non-periodic infinite decimals are indicative of irrational quantities.
The answer to the given question is : It belongs to the rational numbers because it is a fraction.
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I need a answer fast thanks!
Answer:
Chart:
x y
-6 11
3 5
15 -3
-12 15
Step-by-step explanation:
The only things you can plug in are the domain {-12, -6, 3, 15}
Plug in the domain into equation to find y.
-6 :
y = -2/3 (-6) +7
y = +47
y=11
(-6,11)
3:
y = -2/3 (3) +7
y = -2 +7
y = 5
(3, 5)
15:
y = -2/3 (15) +7
y = -10 +7
y = -3
(15 , -3)
-12:
y = -2/3 (-12) +7
y = 8 + 7
y= 15
(-12,15)
Answer:
1) 11
2) 3
3) -3
4) -12
Step-by-step explanation:
eq(1):
\(y = \frac{-2}{3} x + 7\\\\y - 7 = \frac{-2}{3} x\\\\x = (y - 7)\frac{-3}{2} \\\\x = (7-y)\frac{3}{2} ---eq(2)\)
1) x = -6
sub in eq(1)
\(y = \frac{-2}{3} (-6) + 7\\\\y = \frac{12}{3} + 7\\\\y = 4+7\\\\y = 11\)
2) y = 5
sub in eq(2)
\(x = (7-5)\frac{3}{2} \\\\x = 3\)
3) x = 15
sub in eq(1)
\(y = \frac{-2}{3} 15 + 7\\\\y = \frac{-30}{3} +7\\\\y = -10 + 7\\\\y = -3\)
4)
sub in eq(2)
\(x = (7-15)\frac{3}{2} \\\\x = -8\frac{3}{2}\\ \\x = -12\)
question down below(its two files)
Answer:
????????????????
Step-by-step explanation:
One important use of the regression line is to do which of the following?
A. To determine the strength of a linear association between two variables
B. To determine if a distribution is unimodal or multimodal
C. To make predictions about the values of y for a given x-value
D. Both A and B are correct
Answer:
C. To make predictions about the values of y for a given x-value (I THINK)
The corporate team-building event will cost $8 if it has 4 attendees. If there are 9 attendees, how much will the corporate team-building event cost? Solve using unit rates.
Answer:
18$ for 9 attendees
Step-by-step explanation:
can rectangle corner perpendicular diagonal lines of the rectangle?
if so can you draw a picture
Answer:
yes
Step-by-step explanation:
I just need level two and three solved please
Answer:
intercepts: (0, 5/2) or (-5, 0)arbitrary point: (7, 6)Step-by-step explanation:
You want two methods of choosing points on the line with slope 1/2 through A(-1, 2).
InterceptsWriting the equation in standard form, we can find the x- and y-intercepts. To get there, we can start from point-slope form:
y -k = m(x -h) . . . . . . line with slope m through point (h, k)
y -2 = 1/2(x -(-1)) . . . . . using given slope and point
2y -4 = x +1 . . . . . . . . . . multiply by 2
x -2y = -5 . . . . . . . . . . . . add -1 -2y
Setting x=0 tells us the y-intercept is ...
0 -2y = -5
y = -5/-2 = 5/2
So, the y-intercept is (0, 5/2).
Setting y=0 tells us the x-intercept is ...
x -2(0) = -5
x = -5
So, the x-intercept is (-5, 0).
Arbitrary pointIt will be convenient to choose an arbitrary y-value to find another point on the line. We can pick y = 6, for example, Then the corresponding x-value is ...
x -2y = -5
x = -5 +2y = -5 +2(6) = 7
Another point on the line is (7, 6).
__
Additional comment
If we were to choose an arbitrary value for x, we would want it to be odd, so the corresponding y-value would be an integer. We chose to pick an arbitrary value of y so we didn't have to worry about how to make the x-value an integer.
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Sydney i cutting the crut from the edge of her andwich. The dimenion, in centimeter, of the andwich i hown. A rectangle labeled andwich. The right ide i labeled 2 x quared 9. The bottom ide i labeled 2 x quared 8. Which expreion repreent the total perimeter of her andwich, and if x=1. 2, what i the approximate length of the crut?
Repone
4x217; 21. 8 centimeter
4 x quared plu 17 ; 21 point 8 centimeter
8x234; 43. 6 centimeter
8 x quared plu 34 ; 43 point 6 centimeter
8x234; 45. 52 centimeter
8 x quared plu 34 ; 45 point 5 2 centimeter
4x217; 22. 76 centimeter
The total perimeter will be 4x^+17 and length be 22.76 cm
As per the data given in the questions,
We have, the shape of the sandwich be rectangular.
We know that, perimeter of the rectangle can be determined by using formula: 2(l+b),
where, l = length of the rectangle
and, b = breadth of the rectangle
The expression for the perimeter of the sandwich would be:
2 (2x^2 + 9) + 2 (2x^2 + 8)
= 4x^2 + 26
Now for finding the length of the crust,
we will put the value of x=1.2,
So, the value of the approximate length of the crust would be:
=4x^2 + 26
= 4 * 1.2^2 + 26
= 22.76 centimetres.
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Solve each triangle. Round your answers to the nearest tenth
The magnitude of angle A (m∠A) is equal to 34.0 degrees.
What is the law of cosine?In order to determine the magnitude of angle A (m∠A) in this triangle with the adjacent, opposite and hypotenuse side lengths given, we would have to apply the law of cosine:
C² = A² + B² - 2(A)(B)cosθ
Where:
A, B, and C represent the side lengths of a triangle.
By substituting the given side lengths into the law of cosine formula, we have the following;
10² = 17² + 11² - 2(17)(11)cosA
100 = 289 + 121 - 374cosA
374cosA = 410 - 100
374cosA = 310
cosA = 310/374
cosA = 0.8289
A = cos⁻¹(0.8289)
A = 34.0 degrees.
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A clothing designer determines that the number of shirts she can sell is given by the formula S = −4x2 + 80x − 76, where x is the price of the shirts in dollars. At what price will the designer sell the maximum number of shirts? a $324 b $19 c $10 d $1
To find the price at which the designer will sell the maximum number of shirts, we need to determine the vertex of the quadratic function representing the number of shirts sold.
The equation for the number of shirts sold is given by:
S = -4x^2 + 80x - 76
This is a quadratic function in the form of:
S = ax^2 + bx + c
To find the price at which the maximum number of shirts is sold, we need to locate the vertex of the quadratic function. The x-coordinate of the vertex can be found using the formula:
x = -b / (2a)
In this case, a = -4 and b = 80. Plugging in these values, we can calculate the x-coordinate:
x = -80 / (2*(-4))
x = -80 / (-8)
x = 10
Therefore, the designer will sell the maximum number of shirts at a price of $10. Hence, the correct option is c) $10.
what is the probability that washing dishes tonight will take me between 15 and 16 minutes? give your answer accurate to two decimal places.
The probability of washing dishes by me tonight will take between 15 and 16 minutes is 14.29%.
The term "uniform distribution" refers to a type of probability distribution in which the likelihood of each potential result is equal.
Let's consider, the lower limit for this distribution as a and the upper limit for this distribution as b.
The following formula gives the likelihood that we will discover a value for X between c and d,
\(P(c\leq X\leq d)=\frac{d-c}{b-a}\)
Given the time it takes me to wash the dishes is 11 minutes and 18 minutes. From this, a = 11 and b = 18.
Then,
\(P(15\leq X\leq 16)=\frac{16-15}{18-11}=0.1429=14.29\%\)
The answer is 14.29%.
The complete question is -
The time it takes me to wash the dishes is uniformly distributed between 11 minutes and 18 minutes. What is the probability that washing dishes tonight will take me between 15 and 16 minutes?
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A coordinate plane. Use the coordinate plane to plot the points (6, 0) and (0, 5). Which statement is true? (0, 5) is located on the x-axis. (0, 5) is located at the origin. (6, 0) is located on the x-axis. (6, 0) is located at the origin.
Answer:
The correct option is (6, 0) is located on the x-axis.
Step-by-step explanation:
Given that we plot (6, 0) and (0, 5) on the xy–plane. We know that in (6, 0) 6 is the x-coordinate and 0 is the y-coordinate while in (0, 5) 0 is the x-coordinate and 5 is the y-coordinate.
Therefore, (6, 0) can be found on the x–axis not on the origin because it has shifted from 0 to 6 and (0, 5) can be found on the y-axis not on the origin because it has shifted from 0 to 5.
Hence, the correct option is (6, 0) is located on the x-axis.
Answer:
x-axis
Step-by-step explanation:
if the minimum amount of weight you could add to a 10 pound backpack someone was wearing (with them noticing) was 1 pound, how much would have to be added to a 100 pound backpack for them to notice?
Answer:
10 pounds
Step-by-step explanation:
given ratio weight:added weight=10:1
100:x=10:1
100/x=10/1
solving for x
100=10x
x=10
? = 56 : 72 as a ratio
Pls also include explanation
Answer:
56:72
=76/52=1
=19/13=1
=13:19
Step-by-step explanation:
If you multiply both of the numbers or divide both of the numbers by the SAME number , the ratio is the same
Example 56:72 multiply by 2 = 112 : 144 <===this is the same ratio
56 :72 multiply by 3.5 = 196 : 252 same ratio
56:72 multiply by 1/4 = 14 : 18 same ratio
etc etc
How many solutions does this system have?
x+3=0
12y=-4x
A. No solutions
B. Infinite solutions
C. One solution
PLEASE HELP
Answer:
one solution y=1 . x=-3
Step-by-step explanation:
19
Phil invests £800 for 3 years in a bank account.
The account pays simple interest at a rate of 2% per year.
Work out the total amount of interest Phil has got at the end of 3 years
Answer:
£4800
Step-by-step explanation:
principal amount:£800
time:3years
rate:2%
amount= principal*rate*time
£800*2*3
=£4800
What evidence is needed to prove two triangles are similar by the SSS similarity theorem?
Consider the same figure as given above. It is observed that DP/PE = DQ/QF and also in the triangle DEF, the line PQ is parallel to the line EF.
So, ∠P = ∠E and ∠Q = ∠F.
Hence, we can write: DP/DE = DQ/DF= PQ/EF.
The above expression is written as
DP/DE = DQ/DF=BC/EF.
It means that PQ = BC.
Hence, the triangle ABC is congruent to the triangle DPQ.
(i.e) ∆ ABC ≅ ∆ DPQ.
Thus, by using the AAA criterion for similarity of the triangle, we can say that
∠A = ∠D, ∠B = ∠E and ∠C = ∠F.
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Prove the following assuming that A, B, and C are all subsets of
a universal set U:
(A△B) △ C = A △ (B△C)
To prove that \((A \triangle B) \triangle C = A \triangle (B \triangle C)\), we can use the properties of the symmetric difference operation \(\triangle\) and set theory.
The main idea is to show that both sides of the equation contain the same elements and, therefore, represent the same set.
Using the definition of the symmetric difference, we can expand each side of the equation:
\((A \triangle B) \triangle C = ((A \cup B) \setminus (A \cap B)) \triangle C\)
\(= (((A \cup B) \setminus (A \cap B)) \cup C) \setminus (((A \cup B) \setminus (A \cap B)) \cap C)\)
Similarly, expanding the other side:
\(A \triangle (B \triangle C) = A \triangle ((B \cup C) \setminus (B \cap C))\)
\(= (A \cup ((B \cup C) \setminus (B \cap C))) \setminus (A \cap ((B \cup C) \setminus (B \cap C)))\)
By associativity of the union and intersection operations, as well as the commutativity of the union operation, we can rearrange the terms in both sides of the equation and simplify the expressions further. This will ultimately lead to the same set of elements on both sides.
Expanding and simplifying both sides of the equation in detail can be quite lengthy, but by using the properties of set operations, associativity, and commutativity, it is possible to demonstrate that \((A \triangle B) \triangle C\) and \(A \triangle (B \triangle C)\) represent the same set.
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the measure of the supplement of an angle is 39° more then the angle. find the measure of the angle and it’s supplement.
Step-by-step explanation:
s = a+39
s+a = 180
a+39+a = 180
2a = 180-39
2a = 141
the angle = 70.5°
the supplement = 109.5°
let f(x, y) be a function such that • the limit of f(x, y) as x → 0 along the path y = x is 0. • the limit of f(x, y) as x → 0 along the path y = x 2 is 0.
The function f(x, y) satisfies the conditions that its limit approaches zero as x approaches zero along two different paths: y = x and y = x^2. This implies that as x approaches zero, the function f(x, y) must approach zero regardless of whether y varies linearly or quadratically with x.
The given conditions state that the limit of f(x, y) as x approaches zero along the path y = x is zero. This means that as x gets arbitrarily close to zero, the function f(x, y) approaches zero when y varies linearly with x. Similarly, the second condition states that the limit of f(x, y) as x approaches zero along the path y = x^2 is also zero. This implies that when y varies quadratically with x, the function f(x, y) still approaches zero as x approaches zero. Therefore, the function f(x, y) must satisfy both conditions by converging to zero as x approaches zero along both paths.
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Suppose we have 100 individuals, some of whom have type 2 diabetes. We use a classification model based on health and lifestyle profiles of the individuals to estimate the probability that each individual is diabetic. If we use a 0.5 probability cut-off, the model predicts that 60 individuals are diabetic, of whom 54 individuals actually are diabetic, while of the other 40 individuals, only 5 are diabetic. Which of the following are possible results that could result from increasing the cut-off probability to 0.6?
a. 47 actual diabetics out of 49 predicted diabetics; 12 actual diabetics out of 51 predicted non-diabetics.
b. 50 actual diabetics out of 53 predicted diabetics; 2 actual diabetics out of 47 predicted non-diabetics.
c. 55 actual diabetics out of 67 predicted diabetics; 6 actual diabetics out of 33 predicted non-diabetics.
d. 58 actual diabetics out of 69 predicted diabetics; 1 actual diabetic out of 31 predicted non-diabetics.
The final answer is option D with a sensitivity of 98.3% and a specificity of 96.8%.
Given that,
Total individuals (N) = 100
Predicted probability cut-off = 0.6
Predicted diabetics (P) = 69
Actual diabetics (A) = 58
Predicted non-diabetics (N-P) = 31
Actual non-diabetics (N-A) = 42
To calculate the number of false positives,
False positives = Number of non-diabetic individuals predicted as diabetic
⇒ False positives = N(P)-(A)
⇒ False positives = 69-58
⇒ False positives = 11
To calculate the number of true negatives,
True negatives = Number of non-diabetic individuals predicted as non-diabetic
⇒ True negatives = N(N-P)-(N-A)
⇒ True negatives = 100-31-42
⇒ True negatives = 30
To calculate the number of false negatives,
False negatives = Number of diabetic individuals predicted as non-diabetic
⇒ False negatives = A - N(P-A)
⇒ False negatives = 58 - (69-58)
⇒ False negatives = 6
To calculate the model's sensitivity,
⇒Sensitivity = A / (A + false negatives)
⇒Sensitivity = 58 / (58 + 6)
⇒Sensitivity = 0.983 or 98.3%
To calculate the model's specificity,
⇒Specificity = true negatives / (true negatives + false positives)
⇒Specificity = 30 / (30 + 11)
⇒Specificity = 0.968 or 96.8%
Therefore,
There is "a sensitivity of 98.3% and a specificity of 96.8%" is correct,.
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what is the measure of <4? Explain how you know.
Answer:
4 = 90°
Step-by-step explanation:
If a box is drawn, that means it is 90 degrees exactly.
Angle 4 has that same box drawn, so that means it is 90°
I Hope That This Helps! :)
The point (17,−9) is translated to the point (6,2). Select the description of the translation.
A
9 down, 7 right.
B
11 left, 11 up
C
9 right, 11 up
D
11 left, 9 down plzzz answer..
Answer:
11 up , 11 left
Step-by-step explanation:
Given
\((17, -9)\) to \((6,2)\)
Required
Determine the translation rule
Considering the x coordinates.
From 17 to 6
6 is to the left of 17.
Using the translation rule:
\(x = x' + b\)
\(17 = 6 + b\)
\(17 - 6 = b\)
\(11 = b\)
\(b = 11\)
Hence: From 17 to 6 is 11 units left translation
Considering the y coordinates.
From -9 to 2
2 is at the top -9.
Using the translation rule:
\(y = y' + b\)
\(-9 = 2 + b\)
\(-9 - 2 = b\)
\(-11= b\)
\(b = -11\)
The negative value impies a upward translation.
Hence: From -9 to 2 is 11 units up translation
Select the correct answer.
Julissa is printing out coples for a work training. It takes 4 minutes to print a color copy, and It takes 2 minutes to print a grayscale copy. She
needs to print no fewer than 8 coples within 25 minutes.
Which system of Inequalities represents the number of color copies, ×, and grayscale coples, y, that Julissa can print to meet her goal?
The system of inequalities that represents the number of copies that Julissa can print to meet her goal is given by:
\(x + y \geq 8\).\(4x + 2y \leq 25\).What is a system of inequalities?A system of equations is when two or more variables are related, and inequalities are built to find the values of each variable.
The variables are given as follows:
Variable x: Number of color copies.Variable y: Number of gray scale copies.She needs to print no fewer than 8 copies, hence:
\(x + y \geq 8\).
It takes 4 minutes to print a color copy and 2 minutes to print a grayscale copy. She has at most 25 minutes, hence:
\(4x + 2y \leq 25\).
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One of the output functions of a three inputs 3x8 decoder combinational output function in sum-of- minterms form: F = (0,1,2,3,7). What is the c function of this output? a) (x + y) (y+z) b) (x+y)(x+z) c) (y + 2) (x + 2)
The correct option is a) (x + y) (y + z). Given the output function F in sum-of-minterms form as F = (0, 1, 2, 3, 7), we need to determine the corresponding Boolean expression for the output function.
A 3x8 decoder has three input variables (x, y, z) and eight output variables, where each output variable corresponds to a unique combination of input variables. The output variables are typically represented as minterms.
Let's analyze the given output function F = (0, 1, 2, 3, 7). The minterms represent the outputs that are equal to 1. By observing the minterms, we can deduce the corresponding Boolean expression.
From the minterms, we can see that the output is equal to 1 when x = 0, y = 0, z = 0 or x = 0, y = 0, z = 1 or x = 0, y = 1, z = 0 or x = 0, y = 1, z = 1 or x = 1, y = 1, z = 1.
By simplifying the above conditions, we get (x + y) (y + z), which is the Boolean expression corresponding to the given output function F.
In summary, the correct option is a) (x + y) (y + z).
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Identify a product/service that is currently in the decline stage. Use the Product Lifecycle Concept to explain why you believe the product/service is at that stage .
Describe the strategic options for companies that are competing in a declining market. Provide specific examples too illustrate what these strategic options entail and how they differ .
One product/service that is currently in the decline stage is DVD rentals. The decline can be attributed to the rapid rise of digital streaming platforms and the decreasing popularity of physical media. Companies competing in a declining market have strategic options such as harvesting and divesting. Harvesting involves maximizing profits from the declining product/service by reducing costs and maintaining a loyal customer base, while divesting involves exiting the market and reallocating resources to more profitable ventures.
DVD rentals are in the decline stage of the product lifecycle due to several factors. The advent of digital streaming platforms like Netflix, Hulu, and Amazon Prime Video has revolutionized the way people consume media. The convenience and vast content libraries offered by these platforms have led to a significant decline in DVD rentals. Moreover, the proliferation of high-speed internet connections and the increasing availability of streaming devices have made it easier for consumers to access digital content.
In a declining market, companies have strategic options to consider. One option is harvesting, which involves maximizing profits from the declining product/service. Companies can achieve this by reducing costs associated with production, distribution, and marketing, as the demand for the product/service diminishes. They may also focus on retaining their loyal customer base by providing incentives, discounts, or exclusive offers. For example, DVD rental companies may lower rental fees, offer bundle deals, or introduce loyalty programs to retain their remaining customers.
Another strategic option is divesting, which involves exiting the declining market altogether. Companies may choose to reallocate their resources to more profitable ventures or invest in emerging technologies or industries. In the case of DVD rentals, companies could divest by shutting down physical rental stores and selling off their DVD inventory. They could then shift their focus to digital streaming services or invest in other areas with growth potential, such as content production or streaming device manufacturing.
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Can you guys help me with this problem?
Answer:
.. .. .......
the answer is 100.....
Answer:
100°
……………………………………,,,,,,,,,,,,,,,,
A salesperson at a jewelry store earns 6% commission each week. Last week, jarrod sold $680 worth of jewelry. How much did make in commission? How much did the jewelry store make from sales?
Answer:
1/ $ 4.08
2/ $675.92
Step-by-step explanation:
Take 68 times 0.06% = $4.08
680 - 4.08= 675.92
Answer:
Step-by-step explanation:
40.80 it told me the answer
What is the volume of a cylinder, in cubic inches,with a height of 14 inches and a base diameter of 12 inches. Round to nearest tenths place
Answer:
1696.5 in.
Step-by-step explanation:
For the base of the cylinder use: \(\pi r^{2}\)
where r is the radius and can be found by dividing the diameter by 2.
Then multiply that by the height to get the answer.
how many positive integers are bigger than -3 and smaller than 5?
Answer:
4
Step-by-step explanation:
1,2,3,4