Answer:
Step-by-step explanation:
The sum of the measures of the angles of a triangle is 180°.
m<D + m<E + m<F = 180°
4x + 2x + m<F = 180
What is the measure of <F? It's not clear in the post.
Shopping While shopping for clothes,
Tracy spent $29 less than 3 times what
Curtis spent. Tracy spent $13. Write and
solve an equation to find how much
Curtis spent. Let x represent how much
Curtis spent.
The equation that can be used to
determine how much Curtis has spent is
X-
-
=
Answer:
Curtis spent 14 dollars
Step-by-step explanation:
3x-29=13
+29. +29
3x=42
/3. /3
x=14
Hopes this helps please mark brainliest
Y=3x-2 shifted 5 units down
By applying a translation of 5 units down, we will find the translated function:
g(x) = 3x - 7
How to apply the translation?Here we have the function:
y = f(x) = 3x - 2
And we want to apply a shift (translation) of 5 units downwards.
For any function f(x), a vertical translation of N units is written as:
g(x) = f(x) + N
If N > 0, the translation is upwards.
if N < 0, the translation is downwards.
Here we want to apply a translation of 5 units downwards, so we will write:
g(x) = f(x) - 5
Replacing f(x) we get:
g(x) = 3x - 2 - 5
g(x) = 3x - 7
That is the translated function.
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in a test of the difference of two proportions, the z-value was calculated to be 1.69. compute an upper tail, lower tail, and two tail p-values for this test statistic.
By using the z value, it can be calculated that
P value for upper tail = 0.0455
P value for lower tail = 0.9545
P value for two tail = 0.091
What is z value?
z value determines the number of standard deviation, the event is above the mean value. That means z value determines the distance of the event from the mean and it is measured in terms of Standard Deviation.
z value = 1.76
From the z table
P value for upper tail = 1 - 0.9545 = 0.0455
P value for lower tail = 0.9545
P value for two tail = 0.0455 [tex]\times[/tex] 2 = 0.091
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What are the steps to solving a polynomial?.
If solving an equation, put it in standard form with 0 on one polynomial side and simplify.
How to solve it?If you're down to a linear or quadratic equation (degree 1 or 2),
solve by inspection or the quadratic formula. Find one rational factor or root. Divide by your factor.Write a polynomial equation in standard form before attempting to solve it. Factor it, then set each variable factor to zero after it has reached zero. The original equations' answers are the solutions to the derived equations. Factoring cannot always be used to solve polynomial equations.
How do you solve a polynomial problem in four steps?Put the equation in standard form with 0 on one side to simplify it while solving it.
Know the anticipated number of roots.
If you're left with a linear or quadratic equation of degree 1 or 2, use the quadratic formula or visual inspection to solve it.
Identify one logical cause or source.
Subtract from your factor.
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Dan emptied hi piggy bank and counted up how many coin he had. 14 pennie 12 nikle 32 dime 48 quarter 7 half dollar and 9 dollar coin how much are the coin from Dan' piggy bank worth in cent
The total value of Dan's piggy bank coins is worth 2844 cents.
What is currency?
Currency is defined as a unit of account that is issued by a government and is accepted at face value. Commodities and services can be exchanged using money.
As we know, each penny is worth 1 cent
Then, 14 pennies = 14 cents
And, a nickel worth 5 cents
Then, 12 nickles = 12*5 = 60 cents
And, a dime worth 10 cents
Then, 32 dimes = 32*10 = 320 cents
And, a quarter worth 25 cents
Then, 48 quarters = 48*25 = 1200 cents
And, a half dollar worth 50 cents
Then, 7 half dollars = 7*50 = 350 cents
And, a dollar worth 100 cents
Then, 9 dollars = 9*100 = 900 cents
Now,
Total coins worth = 14 + 60 + 320 + 1200 + 350 + 900
= 2844 cents
Hence, the total value of coins is 2844 cents.
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consider the set of integers from 1 to 20 inclusive. this set has how many 3-element subsets, such that no two consecutive integers are in the subset?
It has 816 ways to 3-element subsets, such that no two consecutive integers are in the subset.
You need three digits from 1 to 20, but you don't want any consecutive ones. You should call them a, b, and c.
Without loss of generality, a < b < c.
We use combinations,
Remember that we can write a + 1 b if a b and they're not sequential. With the aid of this insight, we can see the number of desired the number of methods for choosing a, b, and c from among the integers so that,
(1 ≤ a) & (a + 1 < b) & (b + 1 < c) & (c ≤ 20)
In other words, you want to know how many possibilities there are to choose the three numbers a, b, and c so that;
1 ≤ a < b − 1 < c − 2 ≤ 18
As a result, the question is equal to asking how many ways there are to select three integers (a, b - 1, and c - 2) from a range of 1 to 18. In other words, we are interested in how many ways we can select three items from a total of 18 options.
So, the response is:
[tex](^1^8_3)[/tex] = 816 ways
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What is -4 2/5÷(-5). I will give Big Brain.
Brackets go first, then you have to do the multiplication and division, then addition and subtraction:
-42/5÷(-5) = (-42/5)÷(-5) = -42/(5 x -5) = -42/(-25) = 42/25
Solve the following:
A.
Quality Control: A company has four photocopy machines A, B, C and D. The probability that a given machine will break down on a particular day is
P(A) = 13⁄100
P(B) = 9⁄50
P(C) = 1⁄5
P(D) = 13⁄100
Assuming independence, what is the probability on a particular day that all machines will break down?
a) 0.00164366
b) 0.00060840
c) 0.01000000
d) 0.00000234
e) 0.16436555
f) None of the above.
The probability on a particular day that all machines will break down is 0.00060840. So the option b is correct.
In the given question,
A company has four photocopy machines A, B, C and D.
The probability that a given machine will break down on a particular day is;
P(A) = 13⁄100
P(B) = 9⁄50
P(C) = 1⁄5
P(D) = 13⁄100
We have to find the probability on a particular day that all machines will break down.
The required probability = P(A∩B∩C∩D)
The required probability = P(A)∙P(B)∙P(C)∙P(D)
The required probability = 13⁄100 × 9⁄50 × 1⁄5 × 13⁄100
The required probability = 1521/2500000
The required probability = 0.00060840
Hence, the probability on a particular day that all machines will break down is 0.00060840. So the option b is correct.
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If Bob produces 36 or fewer items in a week, he is paid X dollars per item. If Bob produces more than 36 items in a week, he is paid X dollars per item for the first 36 items and 3/2 times that amount for each additional item. How many items did Bob produce last week?
Last week Bob was paid total of $480 for the items that he produced that week and this week Bob produced 2 items more than last week and was paid a total of $510 for the items that he produced this week.
Let's start with the simplest case:
he produced 36 or less items this week.
In this case he produced less than 36 items last week too.
So he was paid the same amount of dollar per item. Using assumptions (1) and (2), we have:
$480 + 2X = $510
⇒2X=510-480$
⇒2X=$30
⇒2X=$30/2
⇒X=$15
He was paid $15 per item.
Last week he received his $480.
480/15= 32 items.
This week he received his $510.
510/15=34 items. Other cases have no solution.
seems your question is incomplete., but most probably the complete question was
If Bob produces 36 or fewer items in a week, he is paid X dollars per item. If Bob produces more than 36 items in a week, he is paid X dollars per item for the first 36 items and 3/2 times that amount for each additional item. How many items did Bob produce last week?(1) Last week Bob was paid total of $480 for the items that he produced that week.(2) This week Bob produced 2 items more than last week and was paid a total of $510 for the items that he produced this week.
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A multiple is a number
that is the ____
of
a given number and
some other number.
The correct statement will be;
''A multiple is a number that is the product of a given number and some other number.''
What is Greatest common factors?
The highest number that divides exactly into two more numbers, is called Greatest common factors.
Given that;
The statement is,
A multiple is a number that is the ____ of a given number and some other number.
Now,
We know that;
A multiple is a number that is the product of a given number and some other number.
Thus, The correct statement will be;
''A multiple is a number that is the product of a given number and some other number.''
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solve for x helpppppp
Answer:
x=30°
Step-by-step explanation:
Find angles of the triangles:
Angles on a straight line:
180°-120°=60°
Opposite angles(intersection property):
55°= 55°
Sum of angles in a triangle = 180°
So:
------>60°+55°+2x+5=180°
------>120°+2x=180°
------>2x=180°-120°
------>2x=60°
------>x=60/2°
------>x=30°
let an agle be 'a' and 'b' ,
120°+a=180° ( linear pair )
a=120°-180°
a=60°
b=55°(opposite angle )
a+b+2x+5=180°(angle sum property)
60°+55°+2x+5=180°
120°+2x=180°
2x=180-120
2x=60
x=60/2
x=30
hence, the value of x is 30
a diesel-powered tractor with a cost of $136,700 and estimated residual value of $14,500 is expected to have a useful operating life of 18,800 hours. during november, the tractor was operated 160 hours. determine the depreciation for the month. carry out any division to two decimal places.
For the month of November, there has been a depreciation of almost $1,089.60.
By deducting the expected residual value from the cost of the tractor and dividing the result by the total projected operational life in hours, let's first get the depreciation per hour:
A tractor's depreciation per hour is calculated by deducting the residual value from the purchase price, and multiplying the result by the number of hours the tractor will be in use.
[tex]\rm D = \dfrac {136,700 - 14,500} { 18,800}\\D = \$6.81[/tex]
Multiplying the depreciation per hour by the number of hours the tractor was used to get the depreciation for the month of November
[tex]D_m = 6.81 \times 160\\D_m = \$1,089.60[/tex]
Therefore, for the month of November, there has been a depreciation of almost $1,089.60.
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Hi! Can you guys help me with this
Q:
Dora opened a saving account and deposited $50. After she gets her paycheck each week, she plans to deposit $20 into the saving account
1. Describe the initial value in this situation.
2. Then, find the rate of change for the account.
3. Will the rate of change over time change values? Explain.
The rate of change for the first week is 40%, and it changes values over the time.
Rate is a measurement to determine the change in one quantity with respect to another quantity.
It shows are the changing
The amount deposit by Dora in account = $50.
Also, amount planned by Dora to deposit each week = $20
The rate of change for first week = (20/50)×100 %
= 40 %
The rate of change for the first week is 40%.
The rate of change will change the value, as principal amount increases every week, therefore, rate of change will decrease over the time.
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Combine like terms to create an equivalent expression.
Enter any coefficients as simplified proper or improper fractions or integers.
By combining like terms, the equivalent of the given expression, [tex]-\frac{2}{3}a + \frac{5}{6}a-\frac{1}{6}[/tex] , is [tex]\frac{a}{6} -\frac{1}{6}[/tex] or [tex]\frac{a-1}{6}[/tex]
Determining an Equivalent expression by combining like termsFrom the question, we are to combine like terms to create an equivalent expression of the given expression.
The given expression is
[tex]-\frac{2}{3}a + \frac{5}{6}a-\frac{1}{6}[/tex]
Combining like terms
[tex]\frac{2(-2a) + 1(5a)}{6} -\frac{1}{6}[/tex]
[tex]\frac{-4a + 5a}{6} -\frac{1}{6}[/tex]
[tex]\frac{a}{6} -\frac{1}{6}[/tex]
= [tex]\frac{a-1}{6}[/tex]
Hence, the equivalent expression is [tex]\frac{a}{6} -\frac{1}{6}[/tex] or [tex]\frac{a-1}{6}[/tex].
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Determine the equations of the elastic curve using the coordinates x1 and x2 and specify the deflection and slope at C. El is constant.
The equations of the electric curve using the coordinates x₁ and x₂ are:
For AB:
y₁= (1/EI) [-M₀x₁³/6L + M₀ Lx₁/6]
For CB:
y₂= (1/EI) [-M₀x₂²/2 + 3M₀Lx₂/2 - M₀L]
What is meant by elastic curve?The elastic curve of a beam is the curve formed by the intersection of the neutral surface and the side of the beam when the longitudinal stresses on the fibers.
An Elastic curve is flatter, resembling the horizontal lines in the letter E. Price elasticity of demand, also known as demand elasticity, relates to the degree of responsiveness in demand quantity with respect to price.
For AB:
[tex]M_{x}[/tex]= - [tex]A_{y}[/tex]x₁
By using double integration method,
EI y₁"=[tex]M_{x}[/tex]= - [tex]A_{y}[/tex]x₁
EI y₁'=- [tex]A_{y}[/tex](x₁)²/2 +C₁ -------(1)
EI y₁=- [tex]A_{y}[/tex](x³/6)+C₁ x +C₂ -------(2)
The boundary conditions are:
At x₁=0, y₁=0
At x₁=L, y₁=L
y₁=0,
=- [tex]A_{y}[/tex](0)+C₁ (0) +C₂
Then, C₂=0
y₁=L,
=- [tex]A_{y}[/tex](L³/6)+C₁ (L) +0
Then, C₁= [tex]A_{y}[/tex](L²/6)
C₁=M₀L/6
EIy₁'= -M₀L((x₁)²/2) ------(3)
EIy₁ = -M₀L((x₁)³/6)+(M₀L/6)x₁ -----(4)
For CB:
Mₓ= -M₀
x₂ is in opposite direction to x₁
So the integration with respect to x₂ will be alternately signed.
EI y₂"=Mₓ= -M₀
EI y₂'= -(-M₀x₂)+C₃
EI y₂'=M₀x₂+C₃ ------(5)
EI y₂= -M₀((x₂)²/2)-C₃x₂+C₄ ------(6)
The boundary conditions are:
x₂=L, y₂'=y₁'
y₂=y₁=0
At x₂=L,
y₂'= M₀L²+C₃
y₂'= y₁'= -M₀L/2
C₃= -3M₀L/2
y₂= -M₀L₂/2-(-3M₀L/2)+C₄
C₄= -M₀L
The equation of the electric curve is,
For AB:
y₁= (1/EI) [-M₀x₁³/6L + M₀ Lx₁/6]
For CB:
y₂= (1/EI) [-M₀x₂²/2 + 3M₀Lx₂/2 - M₀L]
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suppose you want to distribute 10 candies among 5 kids such that each kid gets atleast one candy. in how many ways can you distribute the candies? (all 10 pieces of candies are identical, but the kids are distinct.)
There are a total of 126 ways to distribute the 10 identical candies among the 5 distinct kids.
A combination is also called a selection. A combination corresponds to a selection of things from a given set of things. It is Denoted by
ⁿCᵣ = n!/r!(n-r)!
the number of unique r selections fromaset of n objects.
We have given that,
Total number of candies for distribution = 10
number of kids who take the candies = 5
Candies are distributed among the kids such that each kid has atleast one candy.
Here, candies are identical and kids are distinct.
Number of ways in which 10 identical candies can be divided among 5 kids if each kid must get at least one candy. The problem can be solved using the combination formula with
n = 5, k = 10.
= ⁽ᵏ⁻¹⁾Cₙ₋₁· = ⁹C₄ = 126 ways to do this.
So, there are 126 ways to distribute the candies among the five kids.
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A race track has a diameter of 350 ft. How far does a car drive if it completes one lap
around the track?
1) 843 ft
2) 1,099 ft
3) 1,653 ft
4) 2,198 ft
The required distance that a car can drive in one lap is 1099 ft. Option 2 is correct.
Given that,
A race track has a diameter of 350 ft. how far a car drive if it completes one lap is to be determined.
Perimeter is the measure of the figure on its circumference.
Here,
Diameter = 350 ft
Circumference = πD
Circumference = 3.14 × 350 = 1099ft
Thus, the required distance that a car can drive in one lap is 1099 ft. Option 2 is correct.
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Solve the following exponential equation by first writing it in the logarithmic form and then using a calculator to solve it to 2 decimal places. 6 = 170 2 = log T =
The value of x from the exponential equation is 2.866.
Logarithm:
A logarithm is a power to which a number must be raised to get some other number.
Here we have to find the value of x.
The equation is given:
[tex]6^{x}[/tex] = 170
Taking logarithms on both sides, we have:
log [tex]6^{x}[/tex] = log 170
x log 6 = log 170
x = log 170 / log 6
= 2.230/ 0.778
= 2.866
Therefore the value of x is 2.866.
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Find the equation of a line that passes through the point (0,-1) and has a gradient of -3. Leave your answer in the form y = m x + c
the slope goes by several names
• average rate of change
• rate of change
• deltaY over deltaX
• Δy over Δx
• rise over run
• gradient
• constant of proportionality
however, is the same cat wearing different costumes.
[tex](\stackrel{x_1}{0}~,~\stackrel{y_1}{-1})\hspace{10em} \stackrel{slope}{m} ~=~ - 3 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-1)}=\stackrel{m}{- 3}(x-\stackrel{x_1}{0}) \implies y +1= -3 (x -0) \\\\\\ y+1=-3x\implies {\Large \begin{array}{llll} y=-3x-1 \end{array}}[/tex]
Does the altitude of an isosceles triangle bisect the vertex angle?.
Yes, the altitude of an isosceles triangle bisect the vertex angle as ∠BAD = ∠CAD (by CPCT) in isosceles triangle ABC.
Given, an isosceles triangle ABC
now, the two sides are equal
AB = AC
now, drawing an altitude AD in the triangle.
So, in triangles ADB and ADC
AB = AC (given)
AD = AD (common)
∠ADB = ∠ADC (90°)
So, by RHS congruence rule
ΔADB ≅ ΔADC
and therefore ∠BAD = ∠CAD (by CPCT)
Hence, Yes the altitude of an isosceles triangle bisect the vertex angle as ∠BAD = ∠CAD (by CPCT) in isosceles triangle ABC.
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Annie was given two pieces of information and must write the equation of a line. She knows the line crosses the y-axis at the point (0,6) and has a slope of 7. What is the equation of the line?.
The correct answer is the equation of line is y = 7x + 6 when the point is (0,6) and the slope is 7.
We know a point which is (0,6) and a slope which is 7. It's a unique point, where we have to find its equation. Firstly, it is the y intercept because
x = 0. We can use the equation for a line in the form of slope-intercept
The required equation of line formula is y= mx+c where m is the slope that is 7 and c is the y intercept that is 6.
where y = 7x + 6
The general equation of a straight line is y = mx + c, where m denotes the gradient and y = c denotes the point at which the line crosses the y-axis.
On the y-axis, this value c is referred to as the intercept, it represents the equation of a straight line with gradient m and intercept c on the y-axis.
Hence, the equation of line is y = 7x + 6 when the point is (0,6) and the slope is 7.
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in multiple regression analysis, there can be any number of dependent variables but only one independent variable there must be only one independent variable the coefficient of determination must be larger than 1 there can be several independent variables, but only one dependent variable
In multiple regression analysis, there can be several independent variables, but only one dependent variable
The link between several independent or predictor variables and one dependent or criterion variable is typically explained using multiple regression. The constant term, along with a number of independent variables and their corresponding coefficients, are used to model a dependent variable. Thus, it refers to a regression model that uses two or more predictor variables.
It is a statistical method that can be used to examine the relationship among a single dependent variable and a number of independent variables. The variables are quantified because an equation is used to represent the model. Although the independent variables are almost always positive, their coefficients occasionally aren't.
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P(A)=2/3, P(B)=3/5, and P(AB)=11/15, Find P(B|A)
Based on the probability values, the value of the probability notation P(B|A) is 9/11
How to evaluate the probability?The given parameters from the question are given as
P(A) = 2/3
P(B) = 3/5
P(AB) = 11/15
Before solving the probability notation P(B|A), we start by calculating the probability expression
This is represented as
P(B|A) = P(AB)/P(A)
Substitute the known values in the above equation, so, we have the following representation
P(B|A) = (3/5)/(11/15)
Express the quotient expression as products
So, we have the following representation
P(B|A) = 3/5 * 15/11
Divide 15 and 5 by 5
This gives
P(B|A) = 3/1 * 3/11
So, we have
P(B|A) = 3 * 3/11
Multiply 3 and 3
P(B|A) = 9/11
Hence, the value of the probability is 9/11
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3.A series of measurements were made on four skulls (descriptions of the measurements can be found in the Student Exploration Sheet). Which is most likely a modern human skull? Skull Opisthion Index Cranlal capacity 1,110 cm' Maxlllary angle 29.1 958 32.6 1,280 cm" 460 cm' 820 cm" 889 19.3 1198 26.1 989 Opisthion index: The ratio of the distance from the back of the foramen magnum (opisthion) t0 the back of the skull to the length of the skull, multiplied by 100. Cranial capacity: The volume of the cranium_ Maxillary angle: The angle from the zygomatic process t0 the top of the nasal opening to the front edge of the upper jaw: A. Skull A B. Skull B Skull C D Skull D'
Based on this information and the ratios given in the table, I would say that skull B is most likely a human skull.
Given,
In the question:
A series of measurements were made on four skulls (descriptions of the measurements can be found in the Student Exploration Sheet).
To find the which is most likely a modern human skull?
Now, According to the question:
The cranium/face area ratio relates to the size of the cranium relative to the rest of the skull, and we would expect this ratio to be fairly large for a human. The face angle relates to human faces in relation to primate faces, which are less protruded forwards (i.e., we have relatively flat faces), and the foramen magnum is the hole in the base of the skull through which the spinal column connects to the skull. In bipeds, we would expect this hole to be fairly equally distant from the back of the skull to the front of the skull,
So this ratio would be closer to
Hence, Based on this information and the ratios given in the table, I would say that skull B is most likely a human skull.
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The box plots show the weights, in pounds, of the dogs in two different animal shelters. Weights of dogs in shelter a 2 box plots. The number line goes from 6 to 30. For the weights of dogs in shelter a, the whiskers range from 8 to 30, and the box ranges from 17 to 28. A line divides the box at 21. For shelter b, the whiskers range from 10 to 28, and the box ranges from 16 to 20. A line divides the box at 18. Weights of dogs in shelter b which correctly compares the ranges of the data? the range in shelter a is 11, and the range in shelter b is 4. The range in shelter a is 20, and the range in shelter b is 10. The range in shelter a is 13, and the range in shelter b is 8. The range in shelter a is 22, and the range in shelter b is 18.
A line divides the box at 18. Weights of dogs in shelter b which correctly compares the ranges in shelter a is 11, and the range in shelter b is 4.
Define interquartile range .The IQR describes the middle 50% of values when ordered from lowest to highest. To find the interquartile range (IQR), first find the median (middle value) of the lower and upper half of the data. These values are quartile 1 (Q1) and quartile 3 (Q3). The IQR is the difference between Q3 and Q1.
Given:
For Shelter A: The whiskers range from 8 to 30
The minimum weight of Shelter A is 8 pounds.
For Shelter B: The whiskers range from 10 to 28
The minimum weight of Shelter B is 10 pounds.
Thus, the animal shelter has the dog that weighs the least is Shelter A. The animal shelter has the dog that weighs the least is Shelter A
Infact, whiskers are plotted are from the minimum to Q1 and from Q2 to the max.
Q1 stands here for low quartile and
Q2 stands here for upper quartile .
Median is the point between Q1 and Q3 .Interquartile range is the range from Q1 to Q3 .
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A newsletter publisher believes that over 63 % of their readers own a Rolls Royce. For marketing purposes, a potential advertiser wants to confirm this claim. After performing a test at the 0.10 level of significance, the advertiser failed to reject the null hypothesis. What is the conclusion regarding the publisher's claim? Answer 2 Points m Tables Keypad There is sufficient evidence at the 0.10 level of significance that the percentage is over 63 %. There is not sufficient evidence at the 0.10 level of significance to say that the percentage is over 63 % .
Answer:
Step-by-step explanation:
The conclusion is that the null hypothesis is not true
what is y=2x-14 and y=-5x
The unknown value x = 2 after substitution for the value y = -5x for y = 2x - 4.
What is SubstitutionSubstitution in mathematics is the process for solving systems of equations that include solving for one variable and using that solution to find the other (or unknown) variable.
For y = 2x - 14 and y = -5x, we substitute the value -5x for y in the equation y = 2x - 4 to find the unknown value x;
-5x = 2x - 14
add 5x to both sides of the equation
5x - 5x= 2x + 5x - 14
0 = 7x - 14
add 14 to both sides of the equation
14 = 7x - 14 + 14
14 = 7x
also 7x = 14 {divide through by 7}
x = 14/7
x = 2.
Thus, the value of the unknown x is 2 after proper substitution.
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Between which two consecutive whole numbers does v87 lie?
The number square root of 87 which is √87 lies between the two consecutive integers are 9 and 10.
Given that,
The number is square root of 87 which is√87.
We have to find the two consecutive whole numbers does √87 lies.
We know that,
What is an whole number?In the category of numbers known as "whole numbers," all natural numbers and 0 are included. They are a subset of "real numbers," which are those that don't contain fractions, decimals, or negative numbers.
The √87 lies between √81 and √100
Which we can write as
√81<√87<√100
9<√87<10
Therefore, The number square root of 87 which is √87 lies between the two consecutive integers are 9 and 10.
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Prove that if n is an integer, then n 2 ≡ 0 or 1(mod 4).
Hence, we proved that if n is an integer, then either n= 2mod3 or n^2=n mod6.
In the given question we have to prove that prove if n is an integer, then either n= 2mod3 or n^2=n mod6.
If n=2mod3 then tere is nothing to prove.
If n≠ 2mod3 then either n=0mod3 or n=1mod3
Case (1)
n=0mod3 ⇒ 3 | n⇒n=3m for mϵZ
n^2-n=(3m)^2-3m
n^2-n=9m^2-3m
n^2-n=3m(3m-1)
So, 3|3m, in this case 3m is even or 3m-1 is even.
i.e. 2|3m(3m-1) and also 3|3m(3m-1)
⇒6|3m(3m-1)
⇒6|n(n-1)
⇒6|(n^2-n)
⇒n=n mod6 (Proved)
Case (2)
n=1mod3 ⇒ 3 | (n-1)⇒n=3m+1 for mϵZ
n^2-n=(3m+1)^2-(3m+1)
n^2-n=9m^2+6m+1-3m-1
n^2-n=9m^2+3m
n^2-n=3m(m+1)
So, 3|3m, in this case 3m is even or 3m+1 is even.
i.e. 2|3m(3m+1) and also 3|3m(3m+1)
⇒6|3m(3m+1)
⇒6|n(n-1)
⇒6|(n^2-n)
⇒n=n mod6 (Proved)
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The write question is
Prove that if n is an integer, then n = 2 mod 3 or n^2 = n mod 6.
Yen calculate the product 5/8 x 24/25. Before he multiplie, he implifie all the factor. What doe the problem look like after he implifie the factor?
The problem that looks like after that he implifie the factor is 3/5.
What is meant by factor?A factor is a number that divides another number with no residual. In other words, if multiplying two whole numbers yields a product, then the numbers we are multiplying are factors of the product since they are divisible by the product.
Factors are numbers that can divide a number exactly. As a result, there is no leftover remaining after division. Factors are the numbers that you multiply together to get another number. As a result, a factor is the divisor of another integer.
Given, Yen calculates the product 5/8 times 24/25.
The product 5/8 times 24/25
=(5/8)(24/25)
Now, we have to factor the terms.
=(5/2×2×2)×(2×2×2×2)/(5×5)
=(5×2×2×2×3)/(2×2×2×5×5)
=3/5
The problem that looks like after that he implifie the factor is 3/5.
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