The missing part of the table is completed as shown below
x y
-1 1 / 6
0 1
3 216
What is an exponential function?Exponential function is a function of the form f(x) = a(b)^x
Considering the given problem,
the starting = a
the base = b
the exponents = x
Using the formula, y = 6^x the table is completed by substitution
for x = -1
y = 6^(-1) = 1/ 6
for x = 0
y = 6^(0) = 1
for x = 3
y = 6^(3) = 216
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If f(x)=2(x)+3=5 what is f(-2)
As a result, f(-2) has a value of -1 by simply substituting the value of x in the function. as Each function is given a domain and a codomain, often known as a scope.
what is function ?Math deals with numbers with their variants, formulae and adjacent tissues, structures and associated locations, and areas where they might be found. The term "function" refers to the connection between a series of inputs, of which each has a corresponding output. A function is a connection between the inputs and outputs where each input result in a single, unique output. A domain as well as a codomain, or scope, are allocated to each function. Functions are generally symbolized by the letter f. (x). The input is an x. On functions, another functions, many-to-one functions, within operations, and on functions are the four main types of functions that are available.
given
f(x)=2(x)+3=5
= f(-2) = 2(-2) + 3 = 5
= -4 + 3
= -1
As a result, f(-2) has a value of -1 by simply substituting the value of x in the function. as Each function is given a domain and a codomain, often known as a scope.
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Solve for y.
Enter your answer in the box.
Answer:
y=10
Step-by-step explanation:
Since this triangle has equal length sides, it is equilateral and also has equal measured angles. This means that each angle is 180/3=60 degrees.
To solve for y, we can do 5y+10=60. Simplifying, we get
5y=50
y=10.
Answer:
4
Step-by-step explanation:
So all the angles will have the same value. In a triangle all the angles will add up to 180, so each angle would have to be 60 degrees. So to know Y we need 6x+6=5y+10. So subtract 10 from each side, then subtract 6x from each side to get 4=x
(a b)2 = 1a2 2ab 1b2 (a b)3 = 1a3 3a2b 3ab2 1b3 how are binomial expansions related to pascal’s triangle?
The binomial expansions for the given expressions \((a-b)^{2} = 1a^{2} + 2ab + 1b^{2} and (a-b)^{3} = 1a^{3} + 3a^{2}b+ 3ab^{2} + 1b^{3}\) are related to the pascal's triangles 3rd and 4th rows.
What is binomial expansion?An expression that has been raised to any finite power can be expanded using the binomial theorem known as binomial expansion. A useful expansion technique with applications in probability, probability theory, and algebra is the binomial theorem.
Who is pascal's triangle named after?The triangle is named after the French mathematician and philosopher Blaise Pascal (1623–1662) who, in his dissertation Traité du triangle arithmétique (Treatise on Arithmetical Triangle), published the first structured study on the characteristics and uses of the triangle in 1653.
Pascal's triangle is a triangular array of numbers that can be used to help expand binomials. Each number in the triangle is the sum of the two numbers directly above it. The first row of the triangle consists of a single 1, and each subsequent row begins and ends with a 1, with the other numbers being the sum of the two numbers directly above it.
For example, the first few rows of Pascal's triangle look like this:
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
To use Pascal's triangle to expand a binomial, you can start by writing out the terms of the binomial, with a blank space for each coefficient. Then, you can fill in the blanks using the numbers from Pascal's triangle. For example, to expand (a + b)^3, you can write out the terms like this:
(a + b)^3 = a^3 + 3a^2b + 3ab^2 + b^3
Then, you can fill in the blanks using the numbers from Pascal's triangle:
(a + b)^3 = 1a^3 + 3a^2b + 3ab^2 + 1b^3
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Answer:
The coefficients of the terms come from rows of the triangle.If the exponent is n, look at the entries in rown.
Step-by-step explanation:
To make an international call, there is a flat fee of $3.15 plus $0.05 for every minute that you talk. If you were charged $5.10 for making an international call, for how many minutes did you talk?
Answer:
39 minutes
Step-by-step explanation:
I used a calculator
Answer:
39 minutes
Step-by-step explanation:
a = 0.05m + 3.15 where a=the total charged, m=the amount of minutes
5.10 = 0.05m + 3.15
1.95 = 0.05m
1.95/0.05 = m
m = 39 minutes
A typical oak tree is 54 feet tall. if water moves through the tree at a rate of 0.4 inches/minute, how long will it take to send water to the top of the tree? quizlet
Answer:
1 620 minutes or 27 hrs
Step-by-step explanation:
look at attachment
PLEASE HELP ASAP!
Which expression is equivalent to 5^10 x 5^5?
5^2
5^5
5^15
5^50
Answer:
5^15
Step-by-step explanation:
5^5 is 3125, and 5^10 is 9765625. When multiplied, you get 30517578125. 5^5 is in the equation, so that couldn't be the answer. 5^50 is too big of a number, so that also wouldn't work. 5^2 is 25, and that would be too small. That leaves 5^15, which when calculated leads to 30517578125.
Answer:
5^15
Step-by-step explanation:
5^10 is equivalent to 9765625 and 5^5 is equivalent to 3125. 9765625x3125 is equal to 30517578125. We need to find the expression wich is equal to that number. It can't be 5^2 (25), 5^5 (3125), 5^50 (8.8817842e+34). The answer is 5^15 (30517578125)
mark any solutions to the equation 2cos^2x-1=0
The solutions to the equation 2cos^2x-1=0 is x = π/4, -π/4 (in radians), x = 45 degrees, -45 degrees (in degrees).
To solve the equation 2cos^2(x) - 1 = 0, we can follow these steps:
Step 1: Add 1 to both sides of the equation to isolate the cosine term:
2cos^2(x) = 1
Step 2: Divide both sides of the equation by 2 to solve for cos^2(x):
cos^2(x) = 1/2
Step 3: Take the square root of both sides of the equation:
cos(x) = ±√(1/2)
Step 4: Find the solutions for x by taking the inverse cosine (cos⁻¹) of both sides:
x = cos⁻¹(±√(1/2))
Now, let's evaluate the inverse cosine of ±√(1/2) to find the solutions for x:
For cos⁻¹(√(1/2)):
x = cos⁻¹(√(1/2))
x = π/4 or 45 degrees
For cos⁻¹(-√(1/2)):
x = cos⁻¹(-√(1/2))
x = -π/4 or -45 degrees
Therefore, the solutions to the equation 2cos^2(x) - 1 = 0 are:
x = π/4, -π/4 (in radians)
x = 45 degrees, -45 degrees (in degrees)
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1. If n=590 and ˆpp^ (p-hat) =0.27, find the margin of error at a 90% confidence level
Give your answer to three decimals
2. In a recent poll, 550 people were asked if they liked dogs, and 10% said they did. Find the margin of error of this poll, at the 99% confidence level.
Give your answer to three decimals
3. If n = 500 and ˆpp^ (p-hat) = 0.85, construct a 95% confidence interval.
Give your answers to three decimals
< p <
4. A political candidate has asked you to conduct a poll to determine what percentage of people support her.
If the candidate only wants a 4% margin of error at a 90% confidence level, what size of sample is needed?
Give your answer in whole people.
5. Out of 100 people sampled, 7 preferred Candidate A. Based on this, estimate what proportion of the voting population (ππ) prefers Candidate A.
Use a 90% confidence level, and give your answers as decimals, to three places.
< ππ <
6. You work for a marketing firm that has a large client in the automobile industry. You have been asked to estimate the proportion of households in Chicago that have two or more vehicles. You have been assigned to gather a random sample that could be used to estimate this proportion to within a 0.04 margin of error at a 99% level of confidence.
a) With no prior research, what sample size should you gather in order to obtain a 0.04 margin of error? Round your answer up to the nearest whole number.
n = households
b) Your firm has decided that your plan is too expensive, and they wish to reduce the sample size required. You conduct a small preliminary sample, and you obtain a sample proportion of ˆp=0.2p^=0.2 . Using this new information. what sample size should you gather in order to obtain a 0.04 margin of error? Round your answer up to the nearest whole number.
n = households
7. In a sample of 240 adults, 161 had children. Construct a 95% confidence interval for the true population proportion of adults with children.
Give your answers as decimals, to three places
< p <
8. The confidence interval for a population porportion is (0.48, 0.68). What the the sample proportion and the margin of error. I
ˆp=p^=
Margin of Error =
1. The margin of error can be determined by using the following formula: Margin of error = z*√(p^(1-p^)/n)Where z is the z-score for the confidence level, p^ is the sample proportion, and n is the sample size.
For a 90% confidence level, the z-score is 1.645. Therefore, the margin of error is:Margin of error = 1.645 * √((0.27*(1-0.27))/590)≈ 0.0472 or 0.047 (rounded to three decimal places)
2. To find the margin of error at a 99% confidence level, we can use the formula:Margin of error = z*√(p^(1-p^)/n)For a 99% confidence level, the z-score is 2.576.
Therefore, the margin of error is:Margin of error = 2.576 * √((0.1*(1-0.1))/550)≈ 0.0464 or 0.046 (rounded to three decimal places)
3. The formula for a confidence interval for a proportion is:p^ ± z*(√(p^(1-p^)/n))where z is the z-score for the desired confidence level.For a 95% confidence level, the z-score is 1.96. Therefore, the confidence interval is:0.85 ± 1.96*(√(0.85*(1-0.85)/500))≈ 0.819 to 0.881 (rounded to three decimal places)
4. The formula for sample size required to achieve a desired margin of error is:n = (z^2 * p^*(1-p^))/E^2where z is the z-score for the desired confidence level, p^ is the estimated proportion, and E is the desired margin of error. Rearranging this formula to solve for n, we get:n = (z^2 * p^*(1-p^))/E^2For a 90% confidence level and a desired margin of error of 4%, the z-score is 1.645 and the estimated proportion is 0.5 (assuming no prior information is available).
Therefore, the sample size required is:n = (1.645^2 * 0.5*(1-0.5))/(0.04^2)≈ 426.122. Rounded up to the nearest whole number, the sample size required is 427.5. To obtain a margin of error of 4% with a 99% confidence level, the z-score is 2.576. The estimated proportion is 0.5 (assuming no prior information is available).
Therefore, the sample size required is:n = (2.576^2 * 0.5*(1-0.5))/(0.04^2)≈ 676.36. Rounded up to the nearest whole number, the sample size required is 677.7. To obtain a margin of error of 4% with a 99% confidence level, given that the sample proportion is 0.2, we can use the following formula to calculate the required sample size:n = (z^2 * p^*(1-p^))/E^2where z is the z-score for the desired confidence level, p^ is the sample proportion, and E is the desired margin of error.
Rearranging this formula to solve for n, we get:n = (z^2 * p^*(1-p^))/E^2For a 99% confidence level, a margin of error of 4%, and a sample proportion of 0.2, the z-score is 2.576. Therefore, the sample size required is:n = (2.576^2 * 0.2*(1-0.2))/(0.04^2)≈ 1067.78. Rounded up to the nearest whole number, the sample size required is 1068.7. The formula for a confidence interval for a proportion is:p^ ± z*(√(p^(1-p^)/n))where z is the z-score for the desired confidence level.For a 95% confidence level, the z-score is 1.96.
Therefore, the confidence interval is:161/240 ± 1.96*(√((161/240)*(1-161/240)/240))≈ 0.627 to 0.760 (rounded to three decimal places)8. The sample proportion is the midpoint of the confidence interval, which is: (0.48 + 0.68)/2 = 0.58The margin of error is half the width of the confidence interval, which is: (0.68 - 0.48)/2 = 0.1
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Find the area under the standard normal curve to the left of z=−1.5 z = − 1.5 and to the right of z=−1.1 z = − 1.1 . Round your answer to four decimal places, if necessary.
The task is to find the area under the standard normal curve to the left of z = -1.5 and to the right of z = -1.1, rounded to four decimal places.
The area under the standard normal curve represents the probability of a random variable being less than or greater than a certain value. To find the area to the left of z = -1.5, we can look up the corresponding cumulative probability in the standard normal distribution table or use statistical software.
Similarly, to find the area to the right of z = -1.1, we can calculate 1 minus the cumulative probability to the left of -1.1. By subtracting the area to the right from the area to the left, we can determine the desired area under the standard normal curve.
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For this equation you have to solve for y.
6x-3y=9
The problems due tommorow. Pls help :,(
Can someone please help me with math.
Answer:
The relative frequency of males choosing a sport utility is 21.
The relative frequency of females choosing a sport utility is 135.
The relative frequency of males choosing a sports car is 39.
The relative frequency of females choosing a sports car is 45.
The relative frequency of males or females choosing a sport utility is 156.
The relative frequency of males or females choosing a sports car is 84.
please help asap..... Write the equation of the circle in general form. Show all your work.
will mark brainiest if correct.
Answer:
(x + 3)^2 + (y - 2)^2 = 25 .
Step-by-step explanation:
The center is at (-3, 2) and the radius is 5.
General form is
(x - h)^2 + (y - k)^2 = r^2
So here we have:
(x - (-3)^2 + (y - 2)^2 = 5^2
(x + 3)^2 + (y - 2)^2 = 25
Chelsea made monthly payments for four years before her $13,440 loan was paid off. The loan had an interest rate of 5. 86%, compounded monthly. Chelsea paid $156. 60 in service charges. To the nearest tenth, what percentage of the total cost of the loan did her finance charges comprise? Round all dollar values to the nearest cent. A. 13. 6% b. 10. 9% c. 9. 4% d. 11. 9%.
There are 11.9% of the total cost of the loan did her finance charges comprise, the correct option is D.
How to find the total finance charge?The total finance charge is the amount of money a consumer pays for borrowing money on a credit card.
Given
Chelsea made monthly payments for four years before her $13,440 loan was paid off.
The loan had an interest rate of 5. 86%, compounded monthly.
Chelsea paid $156. 60 in service charges.
The percentage of the total cost of the loan did her finance charges comprise is;
\(\rm\dfrac{ 13,440(\dfrac{0.0586}{12})}{(1-(1+\dfrac{0.0586}{12})^{-48}})= 15,109.44 \\\\15,109.44 + 156.60 = 15,266.04\\\\ 15,266.04 - 13,440.00 = 1,826.04 \\\\=\dfrac{1,826.04}{15,266.04}\\\\ =11.96\ Percentage\)
Hence, there are 11.9% of the total cost of the loan did her finance charges comprise.
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Answer:
Step-by-step explanation:
am trying to find the answer
somebody pleaseee help it’s due today
Answer:
-189
Step-by-step explanation:
You substitute the x for -7 and put it into a calculator.
Sydney wants to use a 10-ft ladder to get to a window 8 feet above the ground. At what angle with the ground does the ladder need to be set?
Answer:
The angle is 53.13 degrees
Step-by-step explanation:
In this question, we are to calculate the angle to which a ladder is to be set to get to a window.
Now, looking at this, we can picture a triangle where the length of the ladder represents the the hypotenuse while the angle we are considering makes the height of the room from the floor.
Please check attachment for picture of triangle
Since we are considering the hypotenuse and the opposite, the mathematical term we would be using is the sine.
Sine of an angle = length of opposite/length of hypotenuse
Sine angle = 8/10
since angle = 8/10
angle = arc sin 0.8
angle = 53.13 degrees
The makers of Mini-Oats cereal have an automated packaging machine that is set to fill boxes with 24.3 ounces of cereal (as labeled on the box). At various times in the packaging process, we select a random sample of 100 boxes to see if the machine is (on average) filling the boxes as labeled. On Tuesday morning, at 7:45 a.m., a random sample of 100 boxes produced an average amount of 23.6 ounces. Which of the following is an appropriate statement of the null hypothesis?
A) The machine fills the boxes with the proper amount of cereal.
B) The average is 24.3 ounces (H0: μ = 24.3)
C) The machine is not filling the boxes with the proper amount of cereal (H0: μ ≠ 24.3 ounces).
D) The machine is not putting enough cereal in the boxes.
E) The average is less than 24.3 ounces (H0: μ < 24.3).
F) The machine fills the boxes with an average of 23.6 ounces (H0: μ = 23.6).
Answer:
B.
Step-by-step explanation:
The null hypothesis will say that the mean is equal to what it is supposed to be. In this case, each box is supposed to have 24.3 ounces of cereal.
So, your null hypothesis would be that the average is equal to 24.3, or H₀ = 24.3. B.
Hope this helps!
Here are the first four terms of an arithmetic sequence 6 10 14 18 write an expression in terms of n for the nth term of this sequence
Answer:r:4(n-1) + 6 Step-by-step explanation:So, as you can see, the sequence seems to be increasing by 4 each time.So, start by finding n = 0.
Step-by-step explanation: Write an expression , in terms of n, for the nth term of this sequence. The nth term of a different arithmetic sequence in 3n + 5. (b) is 108 a term of this ...
3. Solve the
proportion
x : 15 = 29 : 9.6
The required value of x for the given proportion is 45.31
What is proportion?
Proportion is a mathematical relationship or ratio between two or more values. It is used to compare the size, quantity, or degree of two or more objects or measurements. Proportion can be expressed as a fraction, decimal, or percentage. It is often used in geometry, algebra, and calculus to determine the size of a shape or to solve an equation. Proportion is also used in statistics to compare data sets. In everyday life, proportion is used to make sure that items are in good balance with each other. For instance, proportions are used when baking a cake or making a recipe to ensure that the ingredients are properly combined.
Given, the proportion
x : 15 = 29 : 9.6
or, x = \(\frac{29}{9.6}\) × 15
or, x = 45.31
Hence, the required value of x for the given proportion is 45.31
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- A segment has a midpoint at (2, -7) and an
endpoint at (8, -5). What are the coordinates
of the other endpoint?
The coordinates for the other endpoint of the line segment will be (-4,-9).
What are coordinates of a line segment?
The location of a line segment on the coordinate plane is defined by two endpoints whose coordinates are known. The line links the two endpoints but does not extend beyond them. It is a segment (piece) of a line.
This is the same as the definition of a line segment in ordinary plane geometry, the only difference being that we know the coordinates of the points involved.
Coordinates - Coordinates are the components of an ordered pair. In an ordered pair, the first number is called the x-coordinate and the second number is called the y-coordinate.
Now
Given,
One endpoint (x2,y2) having coordinates= (8,-5)
Let other endpoint be = (x1,y1)
Midpoint (x, y) = (2,-7)
Therefore,
x=(x1+x2)/2 and y=(y1+y2)/2
x1=2x-x2 y1=2y-y2
x1=4-8 y1=-14+5
x1=-4 y1=-9
Hence, other endpoint is (4,-9).
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evaluate 2(-2)+3(-3)+5
Answer:
= -8
Step-by-step explanation:
2(-2)+3(-3)+5
first solve the brackets
-4 -9 +5
-13 + 5
= -8
The MD has placed an order for 15mg of albuterol and 0.5mg of atrovent to be given over one hour. The nebulizer you use has an output of 10ml oer hour when running at 4lmp. How much saline would you need to add to your medication to make it last the full hour?
The volume of the medication required, we subtract it from the nebulizer output to find the amount of saline needed.
To determine the amount of saline needed to make the medication last the full hour, we need to calculate the total volume of medication required and subtract it from the volume delivered by the nebulizer.
Given:
- Albuterol dose: 15 mg
- Atrovent dose: 0.5 mg
- Nebulizer output: 10 mL per hour
- Nebulizer flow rate: 4 LPM (liters per minute)
First, we need to convert the nebulizer flow rate to mL per hour:
4 LPM * 60 min = 240 mL per hour
Next, we calculate the total volume of medication required by adding the doses of albuterol and Atrovent:
Total medication volume = 15 mg + 0.5 mg
Now, we need to convert the total medication volume from milligrams to milliliters. To do this, we need to know the concentration of the medication (mg/mL) or the volume of the medication that corresponds to the given dose. Without this information, we cannot convert the dose to volume accurately.
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Please help asap I’ll give Brainly to whoever gets it right.
Consider the inequality -20.2 > 0y. Which of the following must be true? Check all that apply.
You cannot divide by zero.
The inequality is equivalent to -20.2 > 0, which is false.
The solution is y > 0.
The solution is 0 > y.
The solution is y = 0.
Help 6th grade math i will give brainliest.
Answer:
7
Step-by-step explanation:
Look at the order it is in carefully
Describe the shape of the distribution.
A. It is symmetric.
B. It is uniform.
C. It is bimodal.
D. It is skewed.
A) NO CHANGE
B) green: it was thick with
C) green. It was thick with—
D) green, it was thick with
The Choice B is the best answer because the colon is used properly to introduce an independent clause (“it was . . . Erie”) that explains or elaborates on the information that came before in the sentence.
According to the statement
we have to find that the out of given options which is correct for replace the words in the passage.
So, For this purpose, we know that the
In the passage ,
Choice A is incorrect because the colon is misplaced. It should be placed after the word “green,” not after “with.” Choice C is incorrect because the dash is not placed correctly. If it were placed after the word “green,” it could be used. Choice D is incorrect because the comma creates a comma splice. A comma cannot be used without a conjunction to join two independent clauses.
So, The Choice B is the best answer because the colon is used properly to introduce an independent clause (“it was . . . Erie”) that explains or elaborates on the information that came before in the sentence.
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5x / √5
help me please
Answer:\(\sqrt{5x\)
Step-by-step explanation:
Timothy is at an elevation of –17.65 meters below sea level. He descends by 3
meters to observe a coral. What is his new elevation relative to sea level?
In centimeters, what is the unknown length in this right triangle?
61 cm
60 cm
Answer:11
Step-by-step explanation:
Which equation is the inverse of y = 7x² - 10?
The inverse of y = 7x² - 10 is √(x+10)÷7
What does mathematics inverse mean?Inverse operations, such as addition and subtraction, multiplication and division, are pairs of mathematical operations where one operation reverses the effects of the other. The term "inverse" refers to the reciprocal of a number, i.e., x - 1 = 1 / x. One is the result when a number is multiplied by its reciprocal, or inverse.
based on the available facts;
y = 7x^2 - 10
Switch y and x.
x = 7y^2 - 10
Solve for y.
Add 10 to both sides.
x + 10 = 7y^2
Divide both sides by 7.
(x + 10)/7 = y^2
√ both sides.
√(x + 10)/7 = y
Replace y with f^-1(x)
f^-1(x) = √(x + 10)/7y = 7x^2 - 10
Switch y and x.
x = 7y^2 - 10
Solve for y.
Add 10 to both sides.
x + 10 = 7y^2
Divide both sides by 7.
(x + 10)/7 = y^2
√ both sides.
√(x + 10)/7 = y
Replace y with f^-1(x)
f^-1(x) = √(x + 10)/7
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darwin's geometric ratio of increase pertains specifically to
Darwin's geometric ratio of increase pertains specifically to the growth rate of populations in biological organisms. According to Darwin's theory of evolution, populations have the potential to increase exponentially over time if certain conditions are met. The geometric ratio of increase, often denoted as "r" or the intrinsic rate of natural increase, represents the factor by which a population multiplies during each reproductive cycle or generation.
In the context of natural selection, individuals with higher reproductive rates (higher r-values) have a greater chance of passing on their genetic traits to the next generation. Over time, this can lead to significant population growth and evolutionary changes within a species. However, the geometric ratio of increase is limited by various factors, such as availability of resources, competition, predation, and environmental constraints, which can result in a balance between population growth and environmental carrying capacity.
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