Answer:
Step-by-step explanation:
You need to use vertex form of a quadratic to solve this.
Consider the vertex to be [tex](h,k)[/tex]
Another way of representing a quadratic is in "vertex form":
[tex]f(x) = a(x-h)^2+k[/tex]
Now all you have to do is solve for a. You know that the vertex is [tex](0,2)[/tex] and you have know the point of [tex](1,8)[/tex]. Now, all you have to do is plug in these values and solve for a.
[tex]8 = a(1-0)^2+2\\8=a(1)^2+2\\8=a+2\\a=6[/tex]
Now you know the equation is [tex]f(x) = 6(x-0)^2+2[/tex] , but you need it in quadratic form. All you have to do is solve is distribute the 6:
[tex]6x^2+2[/tex]
You get:
a = 6
b = 0
c = 2
Please mark this as brainliest if it satisfies your question
Rachel has 42 stickers she wants give to her friends. Rachel put the stickers in 7 equal groups. Then Rachel found more stickers and put 3 more in each pile. If Rachel gives 5 stickers to each of her 12 friends, how many stickers does she have left over?
Answer:
3 stamps
Step-by-step explanation: 42 stamps in equal groups would be 6 stickers/group.
6+3 = 9 stickers in each pile
there was 7 piles so multiply 7 by the 9 stickers in each pile
7· 9 = 63
5 · 12 = 60, so she gave her friends 60 stickers
63-60 = 3
find an example of a commutative ring R with 1 in R, and a prime ideal P (of R) with no zero divisors but R is not an integral domain.
An example of a commutative ring R with 1, a prime ideal P, and no zero divisors but R is not an integral domain is the ring R = Z/6Z, where Z is the set of integers and 6Z is the ideal generated by 6.
The ring R = Z/6Z consists of the residue classes of integers modulo 6. The elements of R are [0], [1], [2], [3], [4], and [5], where [a] denotes the residue class of a modulo 6.
In this ring, addition and multiplication are performed modulo 6. For example, [2] + [3] = [5] and [2] * [3] = [0].
R has a multiplicative identity, which is the residue class [1]. It is commutative since addition and multiplication are performed modulo 6.
The ideal P = 2R consists of the elements [0] and [2]. P is a prime ideal since R/P is an integral domain, which means there are no zero divisors in R/P. However, R itself is not an integral domain because [2] * [3] = [0] in R, showing that zero divisors exist in R.
Therefore, the ring R = Z/6Z, with the prime ideal P = 2R, satisfies the given conditions.
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41+98+0000000000000000000000000000000000000000000
139
ffsahshanjwjsjudke
Answer:
139 because zero is addition identityIs 9.90 equal to greater than or less than 9.9
Answer:
Equal to.
Step-by-step explanation:
The 0 at the end of 9.90 does not add any value to the number because its 0.
Answer:
It is equal.
Step-by-step explanation:
9.90 = 9.9 , it's the same as the 0 does not count on it.
I’ll give brainless too who ever respond fast and correctly.
why why why do i have to watch ads
Answer:
Because you didnt pay for brainly.
If you do, no adds :D
Its a lot easier to be honest
Answer: Because the advertisements are corporations' way of making a market with the internet. They pay a fee to have their adds placed on sites and above videos, and by watching them, that generates revenue for the content creator and the hosting domain itself.
you welcome
Step-by-step explanation:
Mario paid $44.25 in taxi fare from the hotel to
the airport. The cab charged $2.25 for the first
mile plus $3.50 for each additional mile. How
many miles was it from the hotel to the airport?
A. 10
B. 11
C. 12
D. 13
Answer:
C. 12
hope they help
first mile $2.25 plus $3.50 ×12= $42.00+2.25=44.25
Evaluate 4 + (m - n)
When m = 7 and n = 5.
What is the length of AC?
Answer:
AC=6
Step-by-step explanation:
You can see that ABC is 4 times bigger that HIJ because of lines AB and HI. HI(with a value of one) had to be multiplied by four to equal AB (a value of 4). Use this same rule to find the side AC.
1.5(the length of HJ) times 4 =6.
Help me please I have an f in this class I will give you 44 points
8 x 7s = 56s
8 x (-2) = -16
so 8(7s - 2) = 56s - 16
Investigators performed a randomized experiment in which 411 juvenile delinquents were randomly assigned to either multisystemic therapy (MST) or just probation (control group). Of the 215 assigned to therapy, 87 had criminal convictions within 12 months. Of the 196 in the control group, 74 had criminal convictions within 12 months. Determine whether the therapy caused significantly fewer arrests at a 0.05 significance level. Start by comparing the sample percentages. Find and compare the sample percentages that were arrested for these two groups. The percentage of arrests for people who received MST was %.
The percentage of arrests for people who received Multisystemic Therapy (MST) can be calculated by dividing the number of individuals arrested in the MST group (87) by the total number of individuals.
Percentage of arrests for MST group = (87/215) * 100 ≈ 40.47%
To determine if therapy caused significantly fewer arrests at a 0.05 significance level, we need to compare this percentage with the percentage of arrests in the control group.
The percentage of arrests for the control group can be calculated in a similar manner by dividing the number of individuals arrested in the control group (74) by the total number of individuals in the control group (196), and multiplying by 100.
Percentage of arrests for control group = (74/196) * 100 ≈ 37.76%
Comparing the sample percentages, we find that the percentage of arrests for people who received MST (40.47%) is slightly higher than the percentage of arrests for the control group (37.76%).
To determine if this difference is statistically significant at a 0.05 significance level, we would need to perform a hypothesis test, such as a chi-square test, to compare the observed frequencies with the expected frequencies under the assumption that therapy has no effect on reducing arrests.
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which tool is not needed to construct a perpendiculer bisecter
Answer:
a protractor is not needed to constant a perpendicular bisecter
Step-by-step explanation:
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What was different about the Yuan Dynasty? *
I’ll give brainiest answer to the person who gets it right.
Answer:
One big change during Kublai's reign was that foreigners became the rulers and administrators. Since they didn't trust the local people, they moved in a large number of Muslims and other people to help them rule the empire. The Mongols had their own religious belief called Shamanism.
Sarah practices the piano 1/3 hour in the morning, 5/6 hour in the afternoon, and 4/5 hour in the evening.
How many hours did Sarah practice in all?
Determine if the following linear maps are surjective or injective. You may assume each map is linear. (a) The derivative map T : P3(R) → P₂(R); P₂ (R); p(x) → d dx -p(x). (b) The linear map T: R³ → Rª defined by the matrix 1 1 -3 1 1 1 A 0 1 2 1 0 -1 (c) The linear map T: R³ → R³ defined by the matrix 0 5 5 A = 2 1 2 2 3 4
The linear map is not surjective but injective.
A linear map is an operation between two vector spaces that preserves the properties of addition and scalar multiplication; therefore, it is a linear transformation.
Here is how to determine if the following linear maps are surjective or injective.
(a) The derivative map T: P3(R) → P₂(R); P₂(R); p(x) → d/dx -p(x) is an example of a linear map,
where P3(R) and P₂(R) are the vector spaces of polynomials of degree at most 3 and 2 with coefficients in R, respectively.
Moreover, d/dx is the derivative operator acting on the polynomial p(x).
The kernel of the linear map T is the subspace of P3(R) consisting of polynomials p(x) with T(p(x)) = d/dx -p(x) = 0, i.e., p(x) is constant.
However, a constant polynomial of degree zero is not in the range of T, since it has no derivative. Therefore, the linear map T is injective and not surjective.
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solve elimination method 3x+4y=0 and x - 2y =-5
Answer:
x=−2 and y=3/2
Step-by-step explanation:
see picture
if 1-3(y+2)=-32 find the value of y/3
Answer:
7.6
Step-by-step explanation:
-3 multiple by y and -3 multiple by 2 resolve to 7.6....
data analysts use one-sample hypothesis tests to ______. a. frustrate students b. manage random sampling error c. justify their jobs d. make bad decisions e. all of the choices above f. none of the choices
Data analysts use one-sample hypothesis tests to manage random sampling error. The correct answer is (b).
Data analysts use one-sample hypothesis tests to manage random sampling error. Random sampling error refers to the variability or differences that can occur between a sample and the population it represents.
By conducting hypothesis tests, analysts can determine if the observed data from a sample is statistically significant and can be generalized to the larger population.
Hypothesis tests help analysts assess whether an observed effect or relationship in the sample is likely to be a true effect or relationship in the population or if it is simply due to random chance.
By testing a hypothesis and comparing the sample data to a null hypothesis, analysts can evaluate the validity of their findings and make informed decisions based on the results.
The purpose of hypothesis tests is not to frustrate students, justify their jobs, or make bad decisions. Instead, they serve as a statistical tool to manage random sampling error and provide reliable and valid conclusions based on data analysis.
The correct answer is (b)
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Tucker purchased $4,600 in new equipment for a catering business. He estimates that the value of the equipment is reduced by approximately 40% every two years. Tucker states that the function V(t)=4,600(0.4)2t could be used to represent the value of the equipment, V, in dollars t years after the purchase of the new equipment. Explain whether the function Tucker stated is correct, and, if not, determine the correct function that could be used to find the value of the equipment purchased.
show work
Answer:
The function stated by Tucker is incorrect.
V(t) = 4600(0.8)^t
Step-by-step explanation:
Given the function :
V(t)=4,600(0.4)2t
The initial value of equipment = 4600
Decay rate = 40% of very 2 years
The value of equipment t years after purchase
The exponential decat function goes thus :
V(t) = Initial value * (1 - decay rate)^t
The Decay rate per year = 40% /2 = 20% = 0.2
V(t) = 4600(1 - 0.2)^t
V(t) = 4600(0.8)^t
write five other iterated integrals that are equal to the iterated integral
∫¹₀ ∫¹ᵧ ∫ʸ ₀ f(x, y, z)dx dx dy
Here are five other iterated integrals that are equal to the given iterated integral:
∫₀ʸ ∫⁺∞ₓ ∫¹₀ f(x, y, z)dz dx dy
∫₀ʸ ∫¹₀ ∫ʸ ∞ f(x, y, z)dz dx dy
∫⁺∞₁₀ ∫₀ʸ ∫ʸ ₀ f(x, y, z)dz dy dx
∫¹ᵧ ∫⁺∞₁₀ ∫₀ x f(x, y, z)dz dx dy
∫⁺∞₀ ∫⁺∞₁₀ ∫ʸ ₀ f(x, y, z)dz dx dy
The given iterated integral ∫¹₀ ∫¹ᵧ ∫ʸ ₀ f(x, y, z)dx dx dy represents the integration of a function f(x, y, z) over a region defined by the limits of integration. To obtain five other equivalent iterated integrals, we can rearrange the order of integration and modify the limits accordingly. Each integral represents the same volume or value as the given iterated integral, but the order of integration and limits may vary.
The key is to ensure that the new integrals cover the same region as the original one. The limits in each integral should define the appropriate range for each variable to maintain the equivalence. By rearranging the order of integration and adjusting the limits accordingly, we can obtain these alternative expressions that are equal to the given iterated integral.
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Identify if they are function or not
Answer:
1=function
2=not function
3=function
4=function
5=function
6=not function
7=not function
8=function
Find the equation for the following parabola. Focus (3,4) Directrix y 2 A. (x-3)2-2 (y-2.5) B. (x-3)2 = 4(y-3) C. (x-3)2 = (y-4) D. (y-3)2-4 (x-3) Enter
To find the equation of a parabola given its focus and directrix, we use the standard form of the equation of a parabola which is:
[tex]\frac{(y-k)^2}{4a} = x-h[/tex]
Where (h,k) is the vertex of the parabola, and a is the distance between the vertex and the focus (or between the vertex and directrix, they're equal).
Therefore, the answer is option D, (y-3)²-4(x-3).
Using this formula, let's first find the vertex of the parabola. Since the directrix is a horizontal line, the vertex lies halfway between the focus and directrix on the y-axis. Thus, the vertex is at (3,3).
Since the focus is above the vertex, a is positive, and its value is the distance between the vertex and focus:
a = 4 - 3
= 1
Substituting these values into the standard form of the equation of a parabola gives:
[tex]\frac{(y-3)^2}{4(1)} = x - 3$$[/tex]
[tex]\frac{(y-3)^2}{4} = x - 3$$[/tex]
Multiplying both sides by 4 gives:
y - 3 = 2(x - 3)
y = 2x - 3
Therefore, the answer is option D, (y-3)²-4(x-3).
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A grocery store collected sales data. It found that when customers buy less bread, they tend to purchase more rice. What can we conclude?
A. There is no correlation between amount of bread bought and amount of rice purchased.
B. There is a correlation between amount of bread bought and amount of rice purchased. However, there is no causation. This is because there is an increase in the amount of rice purchased with a decrease in the amount of bread bought.
C. There is a correlation between amount of bread bought and amount of rice purchased. There may or may not be causation. Further studies would have to be done to determine this.
Answer: C
Step-by-step explanation: C because there is obviously a correlation yet we cannot determine if there is causation or not.
Solve for w. Make sure to use scrap paper to show your work. ( 36 ÷ 3 )( 2 x 6 ) = w
Answer:
your answer is w=144
Step-by-step explanation:
(36÷3=12)(2x6=12)
12x12=144Answer: 144
Step-by-step explanation:
Which of the following points is not an ordered pair for the function
ƒ(x ) =5/2 x + 6?
(4, 16)
(2, 7)
(-2, 1)
Answer:
(2, 7) is not an ordered pair for the function.
Step-by-step explanation:
a new shopping mall records 150150150 total shoppers on their first day of business. each day after that, the number of shoppers is 15\, percent more than the number of shoppers the day before.
The number of shoppers on the first day is 150, and each subsequent day the number of shoppers increases by 15%.
Number of shoppers on the first day: The shopping mall recorded a total of 150 shoppers on their first day of business.
Increase in shoppers each day: Starting from the second day, the number of shoppers increases by 15% compared to the previous day.
To calculate the number of shoppers on each day, we can use the following steps:
Day 1: The number of shoppers on the first day is given as 150.
Day 2: To find the number of shoppers on the second day, we need to increase the number of shoppers from the previous day by 15%.
Number of shoppers on Day 2 = Number of shoppers on Day 1 + (15/100) * Number of shoppers on Day 1
Day 3: Similarly, to find the number of shoppers on the third day, we increase the number of shoppers from the second day by 15%.
Number of shoppers on Day 3 = Number of shoppers on Day 2 + (15/100) * Number of shoppers on Day 2
We can continue this process for each subsequent day, using the number of shoppers from the previous day to calculate the number of shoppers for the current day.
By following these steps, we can determine the number of shoppers on each day, starting from the first day and increasing by 15% each day compared to the previous day.
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Approximate the area under the graph of F(x)=0.2x³+2x²-0.2x-2 over the interval (-9,-4) using 5 subintervals. Use the left endpoints to find the height of the rectangles.
To approximate the area under the graph of the function F(x) = 0.2x³ + 2x² - 0.2x - 2 over the interval (-9, -4) using 5 subintervals and left endpoints, we can use the left Riemann sum method. The total area under the graph of F(x) over the interval (-9, -4).
To approximate the area using the left Riemann sum method, we start by dividing the interval (-9, -4) into 5 subintervals of equal width. The width of each subinterval can be calculated as (b - a) / n, where b is the upper limit of the interval (-4), a is the lower limit of the interval (-9), and n is the number of subintervals (5 in this case).
Next, we evaluate the function F(x) at the left endpoint of each subinterval to find the height of the rectangles. For the left Riemann sum, the left endpoint of each subinterval is used as the height. In this case, we evaluate F(x) at x = -9, -7, -5, -3, and -1.
Once we have the width and height of each rectangle, we can calculate the area of each rectangle by multiplying the width and height. Finally, we sum up the areas of all the rectangles to approximate the total area under the graph of F(x) over the interval (-9, -4).
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evan has 4 chocolate bars with a total of 48 pices are in each bar
Answer:
what is your question? it seems the answer would be 12 just by looking at this, but still what is the question exactly?
Step-by-step explanation:
Answer: if you are dividing the answer will be 12
(i wrote two since it dosent say what we need to do
if you are multiplying you answer will be 192
hope it helped!
Step-by-step explanation:
How long will it take for quarterly deposits of $625 to accumulate to be $20,440 at an interest rate of 8.48% compounded quarterly?
It will take approximately 9 years and 2 months for quarterly deposits of $625, with an interest rate of 8.48% compounded quarterly, to accumulate to $20,440.
To calculate the time it takes for the deposits to accumulate to the desired amount, we can use the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A = the accumulated amount
P = the principal amount (initial deposit)
r = the annual interest rate (converted to a decimal)
n = the number of times interest is compounded per year
t = the number of years
In this case, the principal amount (P) is $625, the interest rate (r) is 8.48% (or 0.0848 as a decimal), the number of times interest is compounded per year (n) is 4 (quarterly compounded), and the desired accumulated amount (A) is $20,440.
We need to solve for t, the number of years. Rearranging the formula, we have:
t = (log(A/P)) / (n * log(1 + r/n))
Plugging in the values, we get:
t = (log(20440/625)) / (4 * log(1 + 0.0848/4))
Calculating this, we find that t is approximately 9.18 years. Converting this to years and months, we get approximately 9 years and 2 months. Therefore, it will take around 9 years and 2 months for the quarterly deposits of $625 to accumulate to $20,440 at an interest rate of 8.48% compounded quarterly.
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A random sample of 50 home theater systems has a mean price of $115. Assume the population standard deviation is $19.50. Construct a 90% confidence interval for the population mean.
Based on a random sample of 50 home theater systems, the 90% confidence interval for the population mean price is approximately $110.81 to $119.19, assuming a population standard deviation of $19.50.
To construct a 90% confidence interval for the population mean of home theater systems, we can use the following formula
Confidence Interval = Sample Mean ± Margin of Error
The margin of error depends on the level of confidence and the standard deviation of the population. Given that the sample size is large (n = 50) and we know the population standard deviation is $19.50, we can use the z-distribution.
First, we need to find the critical value (z) for a 90% confidence level. Using a standard normal distribution table or calculator, the critical value for a 90% confidence level is approximately 1.645.
Next, we calculate the margin of error (E) using the formula:
Margin of Error (E) = z * (Population Standard Deviation / sqrt(n))
E = 1.645 * ($19.50 / √(50))
E ≈ $4.19
Now we can construct the confidence interval:
Confidence Interval = Sample Mean ± Margin of Error
Confidence Interval = $115 ± $4.19
Confidence Interval ≈ ($110.81, $119.19)
Therefore, we can say with 90% confidence that the population mean of home theater systems is between approximately $110.81 and $119.19.
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