Answer:
12
Step-by-step explanation:
True or False: for a sample with a standard deviation of s = 8, a score of x = 42 corresponds to z = –0.25. the mean for the sample is m = 40.
The given statement "For a sample with a standard deviation of s = 8, a score of x = 42 corresponds to z = -0.25. The mean for the sample is m = 40." is False because the calculated z-score does not match the given value.
To calculate the z-score, we use the formula z = (x - m) / s, where x is the score, m is the mean, and s is the standard deviation. Substituting the given values, we have z = (42 - 40) / 8 = 0.25. However, the given statement states that the z-score is -0.25, which is incorrect. Therefore, the statement is false.
The correct z-score for x = 42 with a mean of m = 40 and standard deviation of s = 8 is 0.25, not -0.25.
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I NED ANSWERS TO ALL 4 OF THEM!!! PLEASE HELP ASAP!!
Name all angles when there are two parallel lines cut by a transversal?
Alternate interior angles
Corresponding angles
Vertically opposite
From figure 1,
Since the angles marked with colour fulfil the vertically opposite angles properties ,so
(2x+35)° = (8x-49)°
⇒(2x-8x)=(-49-35)°
⇒-6x=-84
⇒x = 14°
Hence , x = 14°
From figure 2,
Since the angles marked are corresponding angles,therefore on equating both angles we get
(10x-18)°=(15x-48)°
⇒(10x-15x)=(-48+18)°
⇒-5x = -30°
⇒ x = 6°
From figure 3,
Since the given two angles are alternate interior angles ,so
(7x+5)°=(12x-75)°
⇒(7x-12x)=(-75-5)°
⇒-5x=-80°
⇒x = 16°
From figure 4 ,
Since the two angles lies in a straight line ,so sum is 180°
(27x-21)°+(10x-16)°=180°
⇒37x -37° = 0
⇒ x = 1°
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Jacob wrote the number 3.555x10.5 in standard form. What number did he write?
Answer:
37.3275
Step-by-step explanation:
I just put it on the calculator :)))))
13.
Evaluate the function rule for the given value.
y= 4·2× for x = –6
A. 1/32
B. –48
C. 1/8
D. 1/16
Answer:
B. –48
Step-by-step explanation:
Answer:y=-48
Step-by-step explanation:
4*(2*-6)=-48
Answer:
The correct answer is y= 1/16
Step-by-step explanation:
2^-6 is 1/64 multiplied by 4 is 1/16
Substitute the value of the variable into the expression and simplify.
( − 6 , − 48 )
Six percent of all cars manufactured at a large auto company are lemons. Suppose two cars are selected at random from the production line of this company. Let x denote the number of lemons in this sample. Write the probability distribution of x. X P(x) 0. 0.8836 1. 0.1060 2. 0.0564
The probability of getting 0 lemons in the sample is 0.8836, the probability of getting 1 lemon in the sample is 0.1060, and the probability of getting 2 lemons in the sample is 0.0564.
The probability distribution of x can be calculated as follows:
Given that 6% of all cars produced at a large auto company are lemons. This means that out of every 100 cars manufactured at the company, 6 of them are lemons.Let x denote the number of lemons in this sample. Then, x can take the values 0, 1, or 2. To find the probability of each value of x, we use the binomial probability formula, which is:
P(x) = (nCx) * p^x * (1-p)^(n-x)
where n is the sample size, p is the probability of success, and x is the number of successes.
The sample size is 2 because we are selecting two cars at random from the production line. The probability of success (getting a lemon) is 0.06. Using the binomial probability formula, we get:
P(0) = (2C0) * 0.06^0 * (1-0.06)^(2-0) = 0.8836
P(1) = (2C1) * 0.06^1 * (1-0.06)^(2-1) = 0.1060
P(2) = (2C2) * 0.06^2 * (1-0.06)^(2-2) = 0.0564
Therefore, the probability distribution of x is:X P(x) 0. 0.8836 1. 0.1060 2. 0.0564
In conclusion, the probability of getting 0 lemons in the sample is 0.8836, the probability of getting 1 lemon in the sample is 0.1060, and the probability of getting 2 lemons in the sample is 0.0564.
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What is a gradient in mathematics
gradient, in mathematics, a differential operator applied to a three-dimensional vector-valued function to yield a vector whose three components are the partial derivatives of the function with respect to its three variables. The symbol for gradient is ∇.
Electrical potential acting on an ion and driving it in one direction or another is the definition of an electrical gradient..
The migration of particles (solutes) from a region of higher concentration to a region of lower concentration, separated by a membrane, is referred to as a concentration gradient.
An ion can travel across a membrane depending on the concentration of a solute thanks to an electrochemical gradient, which combines an electrical gradient with a concentration gradient.
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The bar graph below gives the distribution of the most popular colors for cars and light trucks sold globally in 2010.
The given distribution of the most popular car colors for 2010 is presented in a bar graph. This type of plot effectively displays the categorical data and their corresponding percentages. Therefore, the appropriate plot for representing the given data is the bar graph provided initially.
Now let's consider the options:
a) A time series plot: A time series plot is used to visualize data over a specific period of time. Since the given data represents the distribution of car colors for a single year (2010), a time series plot is not appropriate in this case. Therefore, option a) is not suitable.
b) A pie chart: A pie chart is commonly used to represent parts of a whole. In this case, the data is already presented in a bar graph, which effectively displays the proportions of each car color. Although a pie chart can also represent proportions, it may not provide the same level of clarity as the bar graph. Therefore, option b) is not necessary.
c) A histogram: A histogram is used to visualize the distribution of continuous or discrete data across intervals or bins. In this case, the data is categorical, representing specific car colors and their corresponding percentages. Therefore, a histogram is not appropriate.
d) All of the above: Since options a) and c) are not suitable for representing the given data, the correct answer is not d) "All of the above."
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The bar graph below gives the distribution of the most popular colors for cars and light trucks sold globally in 2010. Most popular car colors (2010) CE 20 15 Percent 10 Silver Black While Blue Gray Red Color Brown Other Which of the following kinds of plots would also be appropriate for these data? a) a time series plot b) a pie chart a histogram. a) a time series plot b) a pie chart. c) a histogram. d) All of the above
In circle
�
Q, m
∠
�
�
�
=
12
0
∘
∠RQS=120
∘
and the area of shaded sector =
3
�
3π. Find the length of
�
�
�
⌢
RTS
⌢. Express your answer as a fraction times
�
π
The area of the shaded sector with a central angle of 120 degrees and radius 12 units is 150.72 sq units
Finding the area of shaded sectorFrom the question, we have the following parameters that can be used in our computation:
central angle = 120 degrees
Radius = 12 units
Using the above as a guide, we have the following:
Sector area = central angle/360 * 3.14 * Radius^2
Substitute the known values in the above equation, so, we have the following representation
Sector area = 120/360 * 3.14 * 12^2
Evaluate
Sector area = 150.72
Hence, the area of the sector is 150.72 sq units
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5. Find the y-intercept 2x - 10 = 2y
y-intercept (b)=
Put in the number only!
the y intercept is 0 because it's the number with the x and you have to divide everything by the 2 w/ the y to get it by itself and the 2's cancel out just leaving x !!
How many numbers between 1 and 200 are divisible by 4 or 6?
Between 1 and 200, there are 66 numbers that are divisible by either 4 or 6.
To find the numbers between 1 and 200 that are divisible by 4 or 6, we need to determine the count of numbers divisible by 4 and the count of numbers divisible by 6, and then subtract the count of numbers divisible by both 4 and 6 (since they would be counted twice).
Divisibility by 4:
To find the count of numbers divisible by 4, we divide 200 by 4 and round down to the nearest whole number. So, 200 divided by 4 equals 50, meaning there are 50 numbers divisible by 4 between 1 and 200.
Divisibility by 6:
Similarly, to find the count of numbers divisible by 6, we divide 200 by 6 and round down. 200 divided by 6 equals approximately 33.33, so there are 33 numbers divisible by 6 between 1 and 200.
Numbers divisible by both 4 and 6:
To find the count of numbers divisible by both 4 and 6, we need to find the count of numbers divisible by their least common multiple, which is 12. We divide 200 by 12 and round down, resulting in approximately 16.67. Thus, there are 16 numbers divisible by both 4 and 6 between 1 and 200.
Finally, we add the count of numbers divisible by 4 and the count of numbers divisible by 6 and subtract the count of numbers divisible by both 4 and 6 to get the total count of numbers divisible by either 4 or 6. Therefore, there are 50 + 33 - 16 = 67 numbers between 1 and 200 that are divisible by either 4 or 6.
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Question 10(Multiple Choice Worth 2 points)
(Circle Graphs MC)
A New York City hotel surveyed its visitors to determine which type of transportation they used to get around the city. The hotel created a table of the data it gathered.
Type of Transportation Number of Visitors
Walk 120
Bicycle 24
Car Service 45
Bus 30
Subway 81
Which of the following circle graphs correctly represents the data in the table?
circle graph titled New York City visitor's transportation, with five sections labeled walk 80 percent, bus 16 percent, car service 30 percent, bicycle 20 percent, and subway 54 percent
circle graph titled New York City visitor's transportation, with five sections labeled walk 40 percent, bicycle 8 percent, car service 15 percent, bus 10 percent, and subway 27 percent
circle graph titled New York City visitor's transportation, with five sections labeled subway 40 percent, bus 8 percent, car service 15 percent, bicycle 10 percent, and walk 27 percent
circle graph titled New York City visitor's transportation, with five sections labeled subway 80 percent, bicycle 20 percent, car service 30 percent, bus 16 percent, and walk 54 percent
So, the circle graph entitled New York City visitor's transportation with five sections labelled walk 40%, bicycle 8%, car service 15%, bus 10%, and subway 27% is the proper option that displays the data in the circular graphs.
Explain about the circle graphs:A circle represents 360 degrees. A circle can be split up into smaller sections. An arc is a segment of a circle, and arcs are named based on their angles.
To illustrate information and data, use a circle graph or pie chart. Often, a circle graph is used to quickly and proportionately display the findings of an investigation.
Given data:
Type of Transportation Number of Visitors Percentage
Walk 120 120*100/ 300 = 40%
Bicycle 24 24*100/ 300 = 8%
Car Service 45 45*100/ 300 = 15%
Bus 30 30*100/ 300 = 10%
Subway 81 81*100/ 300 = 27%
Total 300
So, the circle graph entitled New York City visitor's transportation with five sections labelled walk 40%, bicycle 8%, car service 15%, bus 10%, and subway 27% is the proper option that displays the data in the circular graphs.
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Please help me solve this problem
Answer:
there the same just flipped around b and y are the same z and c are the same so is a and x
simply 49 square root completely
Answer: 7
Step-by-step explanation:
We know that 7 times 7 is 49, so
\(\sqrt{49}\) = \(\sqrt{(7 )(7)}\) = 7
8/15(-2/3) whats the answer?
Answer:
-0.8 is the correct answer of this question
Answer:
-16/45
Step-by-step explanation:
When you mulitply these two fractions together it's best to muliteply them by the number across so therefore 8x-2= -16 and 15x3= 45 which you end up with -16/45
When you flip a biased coin the probability of getting a tail is 0.46.
Find the probability of getting a head.
Answer:
54%
Step-by-step explanation:
Getting a head or a tail are two mutually exclusive events. Thus, given that probability of getting a tail is 0.46, the probability of getting a head is 0.54.
What are mutually exclusive events?Two events are mutually exclusive or disjoint if they cannot both occur at the same time.
P(getting a head) + P(getting a tail) = 1
(Getting a head and getting a tail are mutually exclusive events. This implies that when we toss a coin, we either get a head or a tail.)
P(getting a head) + 0.46 = 1
P(getting a head) = 1 - 0.46 = 0.54
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PLZ PLZ PLZ PLZ HELP!!!!!!!!!!
What is the surface area in square inches of a cube whose edges are 9 inches long?
Answer:
486 inches
Step-by-step explanation:
multiply 9×9=81
then multiply 81×6 (because there are 6 sides)
Answer:
486 on Edge 2022-2023
Step-by-step explanation:
HOPED THIS HELPED YOU
HAVE A GOD-LIKE DAY
EVEN TO EVERYONE THATS ON EDGE
Barbara got a flat tire and does not have a spare. She needs her car for work, so she goes to a business that offers payday loans in order to get the money to buy a new tire. She borrows $75 and plans to pay it back when she gets paid in 8 days. Barbara is charged a fee of $15 and the term on her loan is 8 days. Approximately what is the annual percentage rate on her loan?
Answer: 913%
Step-by-step explanation:
Based on the concept of payday loans, Barbara's annual percentage rate is 9.125%
What is the Annual Percentage Rate?The Annual Percentage Rate (APR) is a term that is used to describe the cost paid each year to borrow money, such as fees, expressed as a percentage.
In this case, to get the annual percentage rate (APR) on Barbara's loan calculate the effective interest rate for the 8-day period and then annualize it.
Given that Barbara borrowed $75 and was charged a fee of $15 for an 8-day term the total amount she needs to repay is $75 + $15 = $90.
To calculate the effective interest rate we can use the following formula:
Effective Interest Rate = (Total Interest / Principal) * (365 / Loan Term)
Total Interest = $15 (fee)
Principal = $75 (loan amount)
Loan Term = 8 days
Substituting the values into the formula:
Effective Interest Rate = (15 / 75) * (365 / 8)
Effective Interest Rate = 0.2 * 45.625
Effective Interest Rate = 9.125%
Therefore, APR = Effective Interest Rate * Compounding Frequency
APR = 9.125% * 1
APR = 9.125%
Hence, in this case, it is concluded the approximate annual percentage rate (APR) on Barbara's loan is around 9.125%.
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GIVING BRAINLIEST:: MATH!
Answer:
C
Step-by-step explanation:
I think that is the answer because 5x5x5=125
Answer:
it is c 125
Step-by-step explanation:
Solve the system 15 -18 dx ·:· = X dt 12 -15 with the initial value -16 -A x(0) = = -11 x(t) =
The solution to the given system of differential equations is x(t) = -7e^(-3t) - (12/5)e^(-5t). The initial value x(0) = -11 is used to determine the specific values of the constants in the solution.
To solve the system of differential equations, we start by rearranging the equations in matrix form:
[d/dt] [x(t)] = [15 -18] · [x(t)]
[12 -15]
Next, we find the eigenvalues and eigenvectors of the coefficient matrix [15 -18; 12 -15]. The eigenvalues are λ₁ = 0 and λ₂ = -3, with corresponding eigenvectors [3; 4] and [-2; 3], respectively.
Using these eigenvalues and eigenvectors, we construct the general solution as x(t) = c₁e^(0t)[3; 4] + c₂e^(-3t)[-2; 3], where c₁ and c₂ are constants.
Simplifying the general solution, we have x(t) = c₁[3; 4] + c₂e^(-3t)[-2; 3].
Using the initial condition x(0) = -11, we substitute t = 0 and solve for the constants c₁ and c₂. This yields c₁ = -7 and c₂ = -12/5.
Finally, substituting these values back into the general solution, we get x(t) = -7e^(-3t) - (12/5)e^(-5t). This is the solution to the given system of differential equations.
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k =
3. What is the slope of the line that passes through
the points (2,-5) and (-4, -1)? Give your answer
as a fraction in simplest form.
Answer:
Slope = -2/3
Step-by-step explanation:
Slope = \(\frac{y_{2} -y_{1}}{x_{2}-x_{1}}\)
Slope = \(\frac{-1 -(-5)}{-4-2} = \frac{4}{-6} =-\frac{2}{3}\)
Jennifer made these measurements on ABC,BC must be-?
Answer:
between 10 and 12
Step-by-step explanation:
Given the measure of angles:
m∠B = 70°
m∠C = 60°
m∠A = 50°
We know m∠B = 70° because the sum of interior angles in a triangle is equal to 180°.Following this information, since the side lengths are directly proportional to the angle measure they see:
Angle B is the largest angle. Therefore, side AC is the longest side of the triangle since it is opposite of the largest angle.
Angle C is the smallest angle, so the side AB is the shortest side.
Therefore, side BC must be between 10 and 12 inches.
what cubed is equal to 1000?
Answer:
10
Step-by-step explanation:
Micheal recorded the number of points his team scored for the first seven basketball games, 64,58,60,52,56,62,54 Which box plot correctly represents the data?
Answer:
The correct box plot is B (Bottom left)
Step-by-step explanation:
I have attached the appropriate picture containing the box plots to this answer. In order to choose the most appropriate box plot, we have to find the median of the distribution and locate the box plot showing the correct median. This is done as follows:
To find the median, we will first arrange the distribution in ascending (or descending) order
Median = 52, 54, 56, 58, 60, 62, 64
Next, we will group the data into two halves, and choose the middle term, which is 58. this becomes the median.
From the diagram, box plots, A, B and C have their median as 58, in order to determine the correct plot, we will find the medians to the lower and upper halves of the distribution. This is done as follows:
Lower half: 52, 54, 56, 58
Median of lower half = (54 + 56) ÷ 2 = 55
upper half = 58, 60, 62, 64
Median of upper half = (60 + 62) ÷ 2 = 61
From the picture the plot with these three medians from lower half to upper half (55, 58, 61) is plot B (bottom left)
Note the medians are the lines that form the boundaries and at the middle of the box.
Answer:
The answer is B bottom left :
Timothy plans on saving, starting with the $50 he received for his birthday. He is pretty sure he can continue to contribute $50 per month to help the account grow. Which formula should he use to calculate the future value?
Find all values of c so that v (-1, 2, c) and w -(7, 8, 9) are orthogonal. (Enter your answers as a comma-separated list.)
The values of c for which the vectors v(-1, 2, c) and w(-7, 8, 9) are orthogonal are c = -1 and c = 17.
In order for two vectors to be orthogonal, their dot product must be zero. The dot product of two vectors v = (v1, v2, v3) and w = (w1, w2, w3) is given by v · w = v1w1 + v2w2 + v3w3.
Let's calculate the dot product of v(-1, 2, c) and w(-7, 8, 9):
v · w = (-1)(-7) + (2)(8) + (c)(9)
= 7 + 16 + 9c
= 23 + 9c
For the vectors to be orthogonal, the dot product must be zero, so we have:
23 + 9c = 0
Solving this equation for c, we get:
9c = -23
c = -23/9
Therefore, the vectors v(-1, 2, c) and w(-7, 8, 9) are orthogonal when c = -23/9.
However, we need to find all the values of c for which the vectors are orthogonal. Since the equation 9c = -23 only gives us one solution, we need to explore further. Let's substitute c = -23/9 back into the dot product equation:
v · w = 23 + 9(-23/9)
= 23 - 23
= 0
The dot product is zero, which means that the vectors v(-1, 2, c) and w(-7, 8, 9) are orthogonal when c = -23/9.
So, the only values of c for which the vectors v and w are orthogonal are c = -23/9 and c=17.
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Write an equation for a rational function with the given characteristics vertical asymptotes: "-4" , slant asymptote: y= x-2 and one x intercept is (3,0)
An equation for a rational function with the given characteristics vertical asymptotes: "-4" , slant asymptote: y= x-2 and one x intercept is (3,0) is
y =(x²+2x-15)/(x-2).
As given,
Vertical asymptote :-4
⇒x=-4
Slant asymptote: y=x-2
x-intercept :(3,0)
Equation for a rational function : y=\((x +4) + \frac{a}{x-2}\)
Substitute when y=0 , x=3
\(0 = (3+4) + \frac{a}{3-2}\)
⇒0 = 7+a
⇒a =-7
Rational function:
\(y= (x +4) + \frac{-7}{x-2}\\\\\implies y = \frac{x^{2} +2x -15}{x-2}\)
Therefore, equation for a rational function with the given characteristics vertical asymptotes: "-4" , slant asymptote: y= x-2 and one x intercept is (3,0) is y = (x²+2x-15)/(x-2).
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-5f - 8=2(3f+2)
---------------
Answer:
f = - \(\frac{12}{11}\)
Step-by-step explanation:
Given
- 5f - 8 = 2(3f + 2) ← distribute parenthesis
- 5f - 8 = 6f + 4 ( subtract 6f from both sides )
- 11f - 8 = 4 ( add 8 to both sides )
- 11f = 12 ( divide both sides by - 11 )
f = \(\frac{12}{-11}\) = - \(\frac{12}{11}\)
Answer:
f= -12/11
Step-by-step explanation:
-5f-8=6f+4
+5f +5f
-8=11f+4
-4 -4
-12=11f
÷11 ÷11
-12/11=f
solve sinx = 2x-3 using false position method
The root of the equation sinx = 2x-3 is 0.8401 (approx).
Given equation is sinx = 2x-3
We need to solve this equation using false position method.
False position method is also known as the regula falsi method.
It is an iterative method used to solve nonlinear equations.
The method is based on the intermediate value theorem.
False position method is a modified version of the bisection method.
The following steps are followed to solve the given equation using the false position method:
1. We will take the end points of the interval a and b in such a way that f(a) and f(b) have opposite signs.
Here, f(x) = sinx - 2x + 3.
2. Calculate the value of c using the following formula: c = [(a*f(b)) - (b*f(a))] / (f(b) - f(a))
3. Evaluate the function at point c and find the sign of f(c).
4. If f(c) is positive, then the root lies between a and c. So, we replace b with c. If f(c) is negative, then the root lies between c and b. So, we replace a with c.
5. Repeat the steps 2 to 4 until we obtain the required accuracy.
Let's solve the given equation using the false position method.
We will take a = 0 and b = 1 because f(0) = 3 and f(1) = -0.1585 have opposite signs.
So, the root lies between 0 and 1.
The calculation is shown in the attached image below.
Therefore, the root of the equation sinx = 2x-3 is 0.8401 (approx).
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please help .........
Girl runs across Across a rectangle field diagonal covering a distance of 120m if the length of the field is 100m calculate the width of the field to the nearest metre
Answer:
66m
Step-by-step explanation:
Answer:
66 m
Step-by-step explanation:
ok so if you think about it, when she runs diagonal she's creating a triangle where she is running along the hypotenuse. we can now use the Pythagorean Theorem a^2 + b^2 = c^2 to solve for the other side with two of them being known.
plug values in
100^2 + w^2 = 120^2
square known values
10,000 = w^2 = 14,400
subtract 10,000 from both sides
w^2 = 4400
take the square root
w = 66 (rounded to the nearest whole number)