Answer:
2
Step-by-step explanation:
f(x) = 1 / x
f(1/2) = 1 / (1/2)
Reciprocal of 1/2 is 2, since you flip numerator and denominator:
f(1/2) = 2
HELP PLZZZ IF YOUR JUST SCROLLING HELP MEE ITS IT A OR B
Hans walks 3.5 km every day. How far does he walk in 7 days?
Write your answer in meters.
Therefore, Hans walks 24500 meters in 7 days using equation.
To convert kilometers to meters, we use the conversion factor of 1 kilometer = 1000 meters.
Hans walks 3.5 km every day.
To find how far he walks in 7 days, we multiply the distance walked in one day (3.5 km) by the number of days (7):
3.5 km * 7 = 24.5 km
Since we want the answer in meters, we can convert the result to meters by multiplying by 1000:
24.5 km * 1000 = 24500 meters
Therefore, Hans walks a total of 24500 meters in 7 days.
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what is the probability that the digit 7 doesn’t appear among 100 digits where each digit is one of (0-9) and all sequences are equally likely?
The probability that the digit 7 doesn't appear among 100 digits is 9/10, or 90%.
The probability that the digit 7 doesn't appear among 100 digits where each digit is one of (0-9) and all sequences are equally likely is given by the probability that all 100 digits are chosen from the set {0, 1, 2, 3, 4, 5, 6, 8, 9}. There are 10 choices for each digit, so there are 10^100 possible sequences of 100 digits. The number of sequences that don't contain the digit 7 is 9^100. Therefore, the probability that the digit 7 doesn't appear among 100 digits is: P(7 doesn't appear) = (9^100) / (10^100) = 9 / 10
Therefore, the probability that the digit 7 doesn't appear among 100 digits is 9/10, or 90%.
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Which of the following are solutions to the equation below?
Check all that apply.
(4x-1)^2=11
Answer:
\(x=\frac{\sqrt{11}-1 }{4} , x=\frac{-\sqrt{11}-1 }{4}\)
Step-by-step explanation:
Square root both sides:
\(4x - 1=\sqrt{11}\) (There is supposed to be a ± sign but I couldn't do it on the equation thing)
\(4x=\sqrt{11}-1\)
or
\(4x=-\sqrt{11} -1\)
\(x=\frac{\sqrt{11}-1 }{4} , x=\frac{-\sqrt{11}-1 }{4}\)
Answer:
PLEASE APPRECIATE IT
Step-by-step explanation:
Square root both sides:
4x - 1=\sqrt{11} (There is supposed to be a ± sign but I couldn't do it on the equation thing)
let xn have a gamma distribution with parameter α = n and β where β is not a function of n. let yn = xn/n. find the limiting distribution of yn
The limiting distribution of yn is a point mass at β.
To find the limiting distribution of yn, we will use the Central Limit Theorem (CLT), which states that the sum of a large number of independent and identically distributed (i.i.d.) random variables, each with finite mean and variance, will be approximately normally distributed.
First, we need to find the mean and variance of yn:
E(yn) = E(xn/n) = (1/n)E(xn) = (1/n)(αβ) = β
Var(yn) = Var(xn/n) = (1/n^2)Var(xn) = (1/n^2)(αβ^2) = β^2/n
Now, we can apply the CLT to yn:
(zn - β) / (σ / sqrt(n)) ~ N(0,1)
where zn = yn, σ^2 = Var(yn) = β^2/n.
As n approaches infinity, the distribution of yn approaches a normal distribution with mean β and variance 0, since σ^2 approaches 0:
lim n->∞ P(zn ≤ z) = Φ((z-β)/0) = Φ(∞) = 1, for any z.
Therefore, the limiting distribution of yn is a point mass at β. In other words, yn converges in probability to β as n approaches infinity.
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If the diameter of a circle is 8. 4 in. , find the area and the circumference of the circle. Use 3. 14 for pi. Round your answers to the nearest hundredth
The circumference of the circle is 26.38 inches and the area of the circle is 55.39 square inches, both rounded to the nearest hundredth.
The diameter of a circle is the distance across the circle passing through its center. In this problem, the diameter of the circle is given as 8.4 inches. We can use the formula for the circumference and the area of a circle in terms of its diameter to find the solutions.
First, we can find the radius of the circle by dividing the diameter by 2. So, the radius is 8.4/2 = 4.2 inches.
To find the circumference of the circle, we can use the formula:
C = πd
where d is the diameter. Substituting the value of d = 8.4 inches and π = 3.14, we get:
C = 3.14 x 8.4 = 26.376
Therefore, the circumference of the circle is 26.38 inches (rounded to the nearest hundredth).
To find the area of the circle, we can use the formula:
A = πr²
where r is the radius. Substituting the value of r = 4.2 inches and π = 3.14, we get:
A = 3.14 x (4.2)² = 55.3896
Therefore, the area of the circle is 55.39 square inches (rounded to the nearest hundredth).
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5x4> 12
AND 12x +5 ≤-4
The solution for x is x ≤ -3/4.
What is Inequality?a relationship between two expressions or values that are not equal to each other is called 'inequality.
To solve for x in the inequalities:
5x - 4 ≥ 12 and 12x + 5 ≤ -4
We'll solve each inequality separately:
5x - 4 ≥ 12
Adding 4 to both sides, we get:
5x ≥ 16
x ≥ 16/5
So the first inequality is solved for x as x ≥ 16/5.
Now, 12x + 5 ≤ -4
Subtracting 5 from both sides, we get:
12x ≤ -9
x≤ -9/12
x≤ -3/4
The only values of x that satisfy both inequalities are those that are less than or equal to -3/4.
Therefore, the solution for x is x ≤ -3/4.
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write a recursive formula for the following arithmetic sequence. 6,-5,-16,-27, …
Rewrite the following equation in slope-intercept form.
4x + y = 18
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Answer:
y= -4x+18
Step-by-step explanation:
the answer is x=y/4+9/2 when solving for x
mark me as a brainliest please <3 thank you!
Find the probability of the following hand at poker. What is the probability of being dealt a 4, 5, 6, 7, and 8, not necessarily in the same suit? The probability of being dealt a 4, 5, 6, 7, 8, not necessarily in the same suit is (Round to five decimal places as needed.)
The probability of dealt not in the same suit is 0.153.
What is probability?Simply put, probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes. Statistics is the study of events that follow a probability distribution.
How to calculate probability?The probability is computed by dividing the total number of possible outcomes by the number of possible ways the event could occur. Probability and odds are two distinct ideas. Odds are calculated by dividing the likelihood of an event by the likelihood that it won't.
There are ⁵²⁵P₅=2,598,960 total ways to draw 5 cards.
There are 4 ways to draw a straight flush with specific ranks - i.e. ⁴P₁=4 ways to pick the suit, then 1 way to get 4,5,6,7,8
So the probability is 4/2,598,960=1649,740≈0.00000153908 =0.153.
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we need to consider the total number of possible hands and divide it by the total number of possible combinations.
There are 52 cards in a standard deck, and we want to find the probability of being dealt a 4, 5, 6, 7, and 8 (not necessarily in the same suit). Let's break down the calculation:Number of favorable outcomes,We have 4 choices for each card (4 suits).For each card (4, 5, 6, 7, and 8), there are 4 possible cards (one in each suit).So the number of favorable outcomes is 4^5 = 1024.
Number of possible outcomes,We want to select 5 cards from a deck of 52 cards, which can be done in (52 choose 5) ways.So the number of possible outcomes is (52 choose 5) = 2,598,960.Now we can calculate the probability by dividing the number of favorable outcomes by the number of possible outcomes:
Probability = Favorable outcomes / Possible outcomes = 1024 / 2,598,960Let's calculate it:
Probability ≈ 0.00039308163 (rounded to 5 decimal places).Therefore, the probability of being dealt a 4, 5, 6, 7, and 8 (not necessarily in the same suit) is approximately 0.00039.
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what is the domain and range of this graph? I'll give brainliest
Answer:
the domain is -2 and the range is 0
Step-by-step explanation:
Answer:
x = (-∞, +∞), y = (0, +∞)Step-by-step explanation:
The domain of the graphed function is any value and the range is all positive numbers:
x = (-∞, +∞)y = (0, +∞)The radius of the wheel on a car is 20 inches. If the wheel is revolving at 346 revolutions per minute, what is the linear speed of the car in miles per hour? Round your answer to the nearest tenth. P
Answer:
131.9 mph
Step-by-step explanation:
First, let's compute the circumference of the wheel, as this gives us the distance the car travels in one revolution of the wheel.
The formula for the circumference of a circle is C = 2πr, where r is the radius of the circle. Given that the radius of the wheel is 20 inches, we can calculate the circumference as follows:
C = 2π * 20 inches = 40π inches
This is the distance the car travels in one revolution of the wheel.
Given that the wheel is making 346 revolutions per minute, the car is moving at a rate of 346 * 40π inches per minute. That's 13840π inches per minute.
Now let's convert this speed to miles per hour.
There are 12 inches in a foot and 5280 feet in a mile. So, there are 12 * 5280 = 63360 inches in a mile.
To convert inches per minute to miles per hour, we first convert inches to miles by dividing by 63360, then convert minutes to hours by multiplying by 60.
So the speed in miles per hour is (13840π / 63360) * 60 ≈ 131.9 mph.
Rounding to the nearest tenth, the linear speed of the car is approximately 131.9 mph.
factor completely, 0.2x + 0.8 a. x b. 0.8(x + 1) c. 0.2(x + 1) d. 0.2(x + 4)
Answer:
d. 0.2 ( x + 4 )
Step-by-step explanation:
0.2x + 0.8
Both 0.2x and 0.8 have a common factor of 0.2, hence pull 0.2 out.
0.2x + 0.8
0.2 ( x + 4 )
consider an airfoil at 12o angle of attack. the normal and axial force coefficients are 1.2 and 0.03, respectively. calculate the lift and drag coefficients.
The coefficient of lift is 1.17
C1 = Cn cos α - Ca sin α
Here, α
Cn is the normal force coefficient, and Ca is Substitute 12· for the axial force coefficient for α
C1 = 1.2cos12.-0.03sin 12.
= 1.16
≈1.17
What is the coefficient of normal force?
The Greek letter mu () typically serves as a symbol for it. From a mathematical perspective, = F/N, where F is the normal force and N is the frictional force. The coefficient of friction has no dimensions because both F and N are measured in force units like newtons or pounds.
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Please help I’m struggling with this one :((
Answer:
Domain: { 2,3,4,5}
Step-by-step explanation:
The domain is the inputs to the function
In this case it is the x values
Domain: { 2,3,4,5}
Answer:
C. (2,3,4,5)
Step-by-step explanation:
The domain is x and the range is y.
The number of reviews for each of the local restaurants is counted. The results are normally distributed with a mean of 25 and a standard deviation of 4.
What percentage of restaurants have between 20 and 25 reviews?
10.6%
50.0%
16.0%
39.4%
Using the normal distribution, it is found that 39.4% of restaurants have between 20 and 25 reviews.
Normal Probability DistributionIn a normal distribution with mean \(\mu\) and standard deviation \(\sigma\), the z-score of a measure X is given by:
\(Z = \frac{X - \mu}{\sigma}\)
It measures how many standard deviations the measure is from the mean. After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.In this problem, the mean and the standard deviation are given, respectively, by \(\mu = 25, \sigma = 4\).
The proportion of restaurants that have between 20 and 25 reviews is the p-value of Z when X = 25 subtracted by the p-value of Z when X = 20, hence:
X = 25:
\(Z = \frac{X - \mu}{\sigma}\)
\(Z = \frac{25 - 25}{4}\)
Z = 0.
Z = 0 has a p-value of 0.5.
X = 20:
\(Z = \frac{X - \mu}{\sigma}\)
\(Z = \frac{20 - 25}{4}\)
Z = -1.25.
Z = -1.25 has a p-value of 0.106.
0.5 - 0.105 = 0.394 = 39.4%.
Hence, 39.4% of restaurants have between 20 and 25 reviews.
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3x - 8 = 3(x - 4) + 1 halp pls
Answer:
no solution
Step-by-step explanation:
3x-11=3x-8
3x=3x+3
0=3
Answer:
Step-by-step explanation:
The top answer is right.
help me please and thank you!!!
Answer:
-3/4
Step-by-step explanation:
I used a calc called desmos graphing calc. It is very helpful
Answer:
The answer is B.-3/4
Step-by-step explanation:
1. Why did the Mexican War lead to conflict between North and South?
Answer:
Many northerners were opposed to the Mexican-American War. Many southerners supported this conflict. A big reason for the different viewpoints regarding our involvement in this war was the issue of slavery. ... The northerners were concerned that many new states would be created from the lands we would receive from Mexico
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Given that f(x)=x^2=11x+30 and g(x)=x-5, find f(-g)(x) and express the result as a polynomial in simplest form.
Hey there,
We have,
f(x) = x² + 11x + 30g(x) = x + 6
Now,
(f.g)(x) = f(g(x))
Substituting...
g(x) = x + 6f(g(x)) = f(x + 6)
Now,
f(x + 6)= (x + 6)² + 11(x + 6) + 30= x² + 12x + 36 + 11x + 66 + 30= x² + 23x + 132
So,The value is x² + 23x + 132
C-Spec, Inc., is attempting to determine whether an existing machine is capable of milling an engine part that has a key specification of 2 ± 0.004 inches. After a trial run on this machine, C-Spec has determined that the machine has a sample mean of 2.001 inches with a standard deviation of 0.002 inch.
Calculate the Cpk for this machine. (Round your answer to 3 decimal places)
The Cpk (Process Capability Index) for this machine is 0.5 (rounded to 3 decimal places).
To calculate the Cpk (Process Capability Index), we need to consider the specification limits and the process variation.
The Cpk is given by the formula:
Cpk = min[(USL - μ) / (3σ), (μ - LSL) / (3σ)], Where:
USL = Upper Specification Limit
LSL = Lower Specification Limit
μ = Process mean
σ = Process standard deviation
In this case, the Upper Specification Limit (USL) is 2 + 0.004 = 2.004 inches, and the Lower Specification Limit (LSL) is 2 - 0.004 = 1.996 inches.
Given that the process mean (μ) is 2.001 inches and the process standard deviation (σ) is 0.002 inch, we can substitute these values into the formula:
Cpk = min[(2.004 - 2.001) / (3 * 0.002), (2.001 - 1.996) / (3 * 0.002)]
Cpk = min[0.003 / 0.006, 0.005 / 0.006]
Cpk = min[0.5, 0.833]
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Consider the circular paraboloid z = x^2 + y^2 and the line through the point (2,0,0) and with direction vector (-1, a, 1). Find all values for a where the line will intersect the paraboloid in only a single point.
The line through the point (2,0,0) and with direction vector (-1, a, 1) intersects the paraboloid z = x² + y² in only a single point for a = 0 or a = √(2).
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To find the intersection points, we can substitute the equation of the line into the equation of the paraboloid:
z = x² + y²
z = (2-t)² + a*t²
x = 2-t
y = a*t
where t is the parameter for the line.
Substituting x and y into the equation of the paraboloid gives:
z = (2-t)² + a^2*t²
To find the values of a where the line intersects the paraboloid in only a single point, we need to find the values of a where this equation has exactly one solution. This occurs when the discriminant of the quadratic equation in t is zero:
a²*(2-a²) = 0
a = 0 or a = √(2)
Therefore, the line through the point (2,0,0) and with direction vector (-1, a, 1) intersects the paraboloid z = x² + y² in only a single point for a = 0 or a = √(2).
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You need a 15% acid solution for a certain test, but your supplier only ships a 10% solution and a 30% solution. Rather than pay the hefty surcharge to have the supplier make a 15% solution, you decide to mix 10% solution with 30% solution, to make your own 15% solution. You need 10 liters of the 15% acid solution. How many liters of 10% solution and 30% solution should you use
To create a 15% acid solution using a 10% solution and a 30% solution, you would need to mix 7.5 liters of the 10% solution with 2.5 liters of the 30% solution to obtain 10 liters of the desired 15% acid solution.
Let's assume you need to create 10 liters of the 15% acid solution.
To find the quantities of the 10% and 30% solutions needed, you can set up an equation based on the concentration of acid in each solution. Let's denote the amount of the 10% solution as x liters and the amount of the 30% solution as (10 - x) liters.
The equation can be set up as follows:
0.10x + 0.30(10 - x) = 0.15(10)
Simplifying the equation gives:
0.10x + 3 - 0.30x = 1.5
Combining like terms:
-0.20x = -1.5 + 3
-0.20x = 1.5
x = 1.5 / 0.20
x = 7.5
Therefore, you would need to mix 7.5 liters of the 10% solution with 2.5 liters of the 30% solution to obtain 10 liters of the desired 15% acid solution.
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Find the first partial derivatives and evaluate at the given point.
Function Point
f(x, y) = x2 - 9xy + y2
(-2, 2)
a) fx(-2,2)=
b) fy(-2,2)=
To find fx, fy, we differentiate the function : a) fx(-2, 2) = -22, b) fy(-2, 2) = 22.
a) To find fx, we differentiate the function with respect to x while treating y as a constant:
fx(x, y) = d/dx (x² - 9xy + y²)
= 2x - 9y
Now, evaluate fx(-2, 2):
fx(-2, 2) = 2(-2) - 9(2)
= -4 - 18
= -22
Therefore, fx(-2, 2) = -22.
Partial derivatives are a type of derivative that measures the rate at which a function changes with respect to one variable while holding all other variables constant. In other words, it calculates the slope or rate of change of a function with respect to a specific variable, assuming that all other variables remain fixed.
b) To find fy, we differentiate the function with respect to y while treating x as a constant:
fy(x, y) = d/dy (x² - 9xy + y²)
= -9x + 2y
Now, evaluate fy(-2, 2):
fy(-2, 2) = -9(-2) + 2(2)
= 18 + 4
= 22
Therefore, fy(-2, 2) = 22.
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Fandango has movie tickets on sale for 1\2 price. You buy 2 $12 tickets and you must pay 6% sales tax. What is your total cost after discount and taxes?
Answer:
$12.72 or $25.44
Step-by-step explanation:
if he buys 2 tickets that are $12 each. half of 12 is 6 so you will have to pay 12 plus tax(6%). to find tax you would multiply 12 x .06 which would be $12.72. if it say the tickets are half off from $24 being $12 each then the answer would be $25.44. the question dosent specify that.
hope i helped
Hunter and his children went into a movie theater and will buy bags of popcorn and drinks. Each bag of popcorn costs $5.50 and each drink costs $6. Hunter has a total of $80 to spend on bags of popcorn and drinks. Write an inequality that would represent the possible values for the number of bags of popcorn purchased, bb, and the number of drinks purchased, d.d.
Answer:
he can buy 14 popcorn which will equal to have left 3 dollars
if he wants to spend all his money it will be
10 drinks and 12 popcorn
Step-by-step explanation:
help! My back door is jammed and my dog is outside! What do I do?
Answer:
go through the other door and get your dog... and then just wait for a parent to fix the door so you dont rip it of the rims
Step-by-step explanation:
Answer:
Just go out through the backdoor and save your dog and wait for your parents duh
sketch the region in the plane consisting of points whose polar coordinates satisfy the given conditions. 1 ≤ r < 5, 3 4 ≤ ≤ 7 4
The region in the plane consists of points whose polar coordinates satisfy the given conditions, and it is enclosed by the circles r = 1 and r = 5, and the rays θ = 3π/4 and θ = 7π/4.
A more detailed explanation of the answer.
To sketch the region in the plane, follow these steps:
1. Identify the polar coordinate conditions: 1 ≤ r < 5, 3π/4 ≤ θ ≤ 7π/4.
2. Plot the radial boundaries: r = 1 and r = 5. These are circles with center at the origin (0, 0) and radii of 1 and 5, respectively.
3. Identify the angular boundaries: θ = 3π/4 and θ = 7π/4. These are rays extending from the origin at angles of 3π/4 (135°) and 7π/4 (315°), respectively.
4. Sketch the region enclosed by the radial and angular boundaries. The region will be a sector of an annulus (ring-like shape) bounded by the two circles and the two rays.
The region in the plane consists of points whose polar coordinates satisfy the given conditions, and it is enclosed by the circles r = 1 and r = 5, and the rays θ = 3π/4 and θ = 7π/4.
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You have enough inventory ($3,000,000) to last 30 days for the current orders being processed. However, a new order came in today, which has to be fulfilled in 15 days. This new order will deplete your inventory completely by that time. How much money in inventory must be ordered to last the month?
Answer:
Picture Below
Step-by-step explanation:
he save in a year? ) The annual income of Amir is Rs. 50,000. If he spends 20% from this and deposits the remaining in a bank, find his expenditure amount and the amount deposited in the bank.
Answer:
Amir spends Rs. 50,000 * 20% = Rs. <<5000020.01=10000>>10,000 on expenses.
The remaining amount, Rs. 50,000 - Rs. 10,000 = Rs. <<50000-10000=40000>>40,000 is deposited in the bank.
Therefore, Amir's expenditure amount is Rs. 10,000 and the amount deposited in the bank is Rs. 40,000.