Answer:
Step-by-step explanation:
R^2-59R-82r^2+60 is equivalent to
Answer: 83r^2 - 59 + 60
Step-by-step explanation:
R^2 - 59R - 82r^2 + 60
= 83r^2 - 59 + 60
math #lollololollollol
Answer:
the answer is 2
Step-by-step explanation:
Label the following numbers as rational or irrational
Answers:
a) rationalb) rationalc) rationald) irrationale) rationalEverything is rational but choice D
=======================================================
Explanation:
A rational number is anything in the form p/q where p and q are integers. The value of q cannot be zero.
So that's why -4/11 is rational. Here we have p = -4 and q = 11.
Any terminating decimal is rational. For choice A, we have 3.14 = 314/100
Choice C is also rational because \(\sqrt{\frac{4}{9}} = \frac{\sqrt{4}}{\sqrt{9}} = \frac{2}{3}\)
Choice E is rational since 6 = 6/1.
In short, choices A, B, C, and E are rational.
------------------
The only irrational answer is d) 2pi
pi is irrational because we cannot write it as a fraction of two integers. Any number in the form n*pi, where n is any integer, is also irrational.
Can someone answer this please and thank you if you do.
i think its 1.45in^2
Look at the diagram.
M
15
N
What is the length of LM rounded to the nearest tenth?
X+3
O
units
In the right angled triangle LMN the length LM ≅ 17.3
How to find the given side LM in the right angled triangle?Since we have the right angled triangle Δ LMN in the figure, we observe that there are two other right angled triangles in it which are Δ LMO and ΔOMN
Applying Pythagoras' theorem to all three triangles, we have that
LM² = LO² + MO² (1)
LN² = LM² + MN² (2) and
MN² = MO² + ON² (3)
Given that
LO = 15, ON = 5 and MN = x + 3We have that
LM² = LO² + MO² (1)
LM² = 15² + MO² (4)
LN² = LM² + MN² (2) and
(LO + ON)² = LM² + (x + 3)² (2)
(15 + 5)² = LM² + (x + 3)² (2)
20² = LM² + (x + 3)² (5)
MN² = MO² + ON² (3)
(x + 3)² = MO² + 5² (6)
So, we have
LM² = 15² + MO² (4)
20² = LM² + (x + 3)² (5)
(x + 3)² = MO² + 5² (6)
From
Substituting equation (6) into (5), we have that
20² = LM² + (x + 3)² (5)
20² = LM² + MO² + 5² (7)
Adding equations (4) and (7), we have that
LM² = 15² + MO² (4)
+
20² = LM² + MO² + 5² (7)
LM² + 20² = 15² + LM² + 2MO² + 5²
20² = 15² + 2MO² + 5² (8)
400 = 225 + 2MO² + 25 (8)
400 = 250 + 2MO²
2MO² = 400 - 250
2MO² = 150
MO² = 150/2
MO² = 75
So, substituting MO² = 75 into equation (4), we have that
LM² = 15² + MO² (4)
LM² = 15² + 75
LM² = 225 + 75
LM² = 300
LM = √300
LM = 17.32
LM ≅ 17.3
So, the length LM ≅ 17.3
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Chloe loans out a sum of $1,000 every quarter to her associates at an interest rate of 4%, compounded quarterly. How much does she stand to gain if er loans are repaid after three years? A) $15,025.8 B)$15,318.6
A) $15,025.8. is the correct option. Chloe loans out a sum of $1,000 every quarter to her associates at an interest rate of 4%, compounded quarterly. She stand to get $15,025.8. if er loans are repaid after three years.
Chloe loans out a sum of $1,000 every quarter to her associates at an interest rate of 4%, compounded quarterly.
We need to find how much she stands to gain if er loans are repaid after three years.
Calculation: Semi-annual compounding = Quarterly compounding * 4 Quarterly interest rate = 4% / 4 = 1%
Number of quarters in three years = 3 years × 4 quarters/year = 12 quarters
Future value of $1,000 at 1% interest compounded quarterly after 12 quarters:
FV = PV(1 + r/m)^(mt) Where PV = 1000, r = 1%, m = 4 and t = 12 quartersFV = 1000(1 + 0.01/4)^(4×12)FV = $1,153.19
Total amount loaned out in 12 quarters = 12 × $1,000 = $12,000
Total interest earned = $1,153.19 - $12,000 = $-10,846.81
Therefore, Chloe stands to lose $10,846.81 if all her loans are repaid after three years.
Hence, the correct option is A) $15,025.8.
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can you teach me how to solve percent proportions using table?
The steps to solve percent proportions using table are added below
Solving percent proportions using table?To solve percent proportions using a table, follow these steps:
Write the ratio as a fraction. For example, if the ratio is 25 out of 100, write it as 25/100 or 0.25.Write the percentage as a decimal. For example, if the percentage is 20%, write it as 0.2.Create a table with two columns. Label the first column "Amount" and the second column "Percent".In the "Amount" column, write the unknown value as a variable, such as "x".In the "Percent" column, write the given percentage as a decimal.Divide the "Amount" by the decimal in the "Percent" column to solve for the unknown variable. Write the answer in the "Amount" column.To check your work, multiply the decimal in the "Percent" column by the value in the "Amount" column. The result should equal the original percentage.For example, to find what percent of 80 is 24, you would create a table with "Amount" and "Percent" columns.
Write "x" in the "Amount" column and "0.24" in the "Percent" column. Divide 80 by 0.24 to get x = 333.33.
To check, multiply 0.24 by 333.33 to get 80.
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Is it true that Every square matrix is a product of elementary matrices.
It is true that every invertible square matrix can be written as a product of elementary matrices. because, it depends on whether you are talking about invertible square matrices or all square matrices.
An elementary matrix is a matrix that can be obtained from the identity matrix by performing a single elementary row operation (such as swapping two rows, multiplying a row by a scalar, or adding a multiple of one row to another).
Moreover, any matrix that can be expressed as a product of elementary matrices is invertible.
However, not every square matrix is invertible, and so not every square matrix can be written as a product of elementary matrices. For example, the zero matrix cannot be written as a product of elementary matrices since it is not invertible.
So, it depends on whether you are talking about invertible square matrices or all square matrices.
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geometric sequences
Answer:
Step-by-step explanation:
Hello,
we are talking about geometric sequences it means that
\(\dfrac{a_{n+1}}{a_n}=constant\)
once we know this constant it is pretty straight forward to answer the question
Part A
For the first example
to go from 6 to 12 we multiply by ... \(\boxed{2}\)
from 12 to 24 we multiply by 2 again
and then we got \(\boxed{48}\) , 96 , 192, 384, etc ...
For the second example
let s estimate the constant
\(\dfrac{\dfrac{56}{27}}{\dfrac{28}{9}}=\dfrac{56*3}{27*28}=\dfrac{2}{3}\)
the second term is then
\(7*\drac{2}{3} = \boxed{ \ \dfrac{14}{3}\ }\)
For the third example
let s estimate the constant
24/-12=-2
so the first term is \(\boxed{-3}\)
as -3 * -2 = 6
Part B
1, 1*3=3 ,3*3=9, 27, 81, 243, 729, ...
Part C
-13, -13*-4=52, -208, 832, -3328, etc
Hope this helps
. Mr. and Mrs. Collins took their son and his 7 friends to the movies in Philadelphia. Each of the 8 tickets cost the same amount of money. They spent $22.00 for parking their van. Mr. and Mrs. Collins are charged a total of $118.00 for parking and tickets. Mr. and Mrs. Collins do not watch the movie. What is the price of each ticket to the movies
Answer:
$12
Step-by-step explanation:
amount spent for 8 movie tickets is equal to 118 - 22 = 96
divide 96 by 8 to get per movie ticket cost of $12
Select the statement below that is true about correlations.A. Correlations can only be negativeB. Correlations are a measure of how much one variable changes as the other variable changesC. Correlations are a measure used to determine the degree to which two variables are related.D. Correlations are a measure of causation between two variablesE. A negative correlation implies no relationship between variablesF. Correlations can only be positive
The statements that are True about the Correlations is , "Correlations are a measure used to determine the degree to which two variables are related" , the correct option is (c) .
In the question,
few statements about Correlation is given ,
we need to find the statement that is True .
we know that , Correlation is the term that is used to measure the degree of relationship between two variable ,
the correlation can be negative , positive or 0 ,
and the negative correlation implies that if one variable increases then other variable decreases and vice a versa .
So , from the above information about Correlation ,
we conclude that , the True statement is "Correlations are a measure used to determine the degree to which two variables are related. "
Therefore , the statement in option (c) is True .
The given question is incomplete , the complete question is
Select the statement below that is true about correlations.
(a) Correlations can only be negative
(b) Correlations are a measure of how much one variable changes as the other variable changes
(c) Correlations are a measure used to determine the degree to which two variables are related.
(d) Correlations are a measure of causation between two variables
(e) A negative correlation implies no relationship between variables
(f) Correlations can only be positive .
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Suppose we could multiply two 3 × 3 matrices using 25 scalar multiplications and a constant number of scalar additions and subtractions. Set up and solve the recurrence relations to analyze the resulting divide-and-conquer algorithm for matrix multiplication.
The resulting divide-and-conquer algorithm for matrix multiplication using 25 scalar multiplications and a constant number of scalar additions and subtractions is efficient for multiplying two 3 × 3 matrices.
To analyze the divide-and-conquer algorithm for matrix multiplication, let's set up and solve the recurrence relations based on the given conditions.
Let's assume we have two 3 × 3 matrices A and B, and we want to compute their product C = A × B.
According to the given information, we can perform the matrix multiplication using 25 scalar multiplications and a constant number of scalar additions and subtractions.
In a divide-and-conquer algorithm, we can split the matrices into smaller submatrices to simplify the multiplication process. Let's assume we divide the matrices into 2 × 2 submatrices:
A = [A11 A12]
[A21 A22]
B = [B11 B12]
[B21 B22]
C = [C11 C12]
[C21 C22]
The recurrence relation for this algorithm can be expressed as follows:
C11 = A11 × B11 + A12 × B21
C12 = A11 × B12 + A12 × B22
C21 = A21 × B11 + A22 × B21
C22 = A21 × B12 + A22 × B22
Since each entry of matrix C requires a scalar multiplication and there are four entries in total, we have a total of 4 scalar multiplications.
To solve the recurrence relation, we can express the number of scalar multiplications as a function of the subproblem size. In this case, the subproblem size reduces to 2 × 2 matrices, and the number of scalar multiplications can be considered constant.
Therefore, the resulting divide-and-conquer algorithm for matrix multiplication using 25 scalar multiplications and a constant number of scalar additions and subtractions is efficient for multiplying two 3 × 3 matrices.
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2. A certain TV can be purchased from the manufacturer for $220. A certain online retailer has a standard markup of 25%, and a certain superstore has a standard markup of 45%.
(a) What is the price of the TV when purchased online? What is the price of the TV when purchased at the superstore?
(b) What is the difference between the prices in Part (a)? How does this relate to the difference in the markup?
Answer:
(1) As a result, the Monitor costs $275 to buy online. (2) There is a 20% price disparity between the two retailers.
What is a good illustration of purchased?10,000 pairs of shoes are ordered by Shoes Unlimited from an overseas vendor. This entails the business issuing a purchase requisition, which serves as a formal promise to buy the specified kind and number of shoes.
(a) To find the price of the TV when purchased online, we can add 25% markup to the manufacturer's price of $220:
Price online = $220 + (0.25 * $220)
Price online = $220 + $55
Price online = $275
So the price of the TV when purchased online is $275.
To find the price of the TV when purchased at the superstore, we can add 45% markup to the manufacturer's price of $220:
Price at superstore = $220 + (0.45 * $220)
Price at superstore = $220 + $99
Price at superstore = $319
So the price of the TV when purchased at the superstore is $319.
(b) The difference between the prices in part (a) is:
Price at superstore - Price online = $319 - $275 = $44
The difference in markup between the two stores is:
Markup at superstore - Markup online = 45% - 25% = 20%
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Find the solution of the system of equations shown below. Show the work that leads to your answer. y = -2x x + y = 3
Find the equation if the line shown
Answer:
y=1/2x+9
Step-by-step explanation:
in a sample of 200 observations, there were 60 positive outcomes. find the standard error for the sample proportion.
The standard error for the sample proportion is 0.3995.
Standard Error: What Is It?
The standard error of the mean, or simply standard error, indicates how likely it is that the population means will differ from a sample mean. It demonstrates how much the sample means would vary if the same study were conducted again using new samples taken from the same population.
given:
n= 200
and possible outcomes= 80
Standard deviation = √(80²/200)= 5.65
Now, standard error = σ / √n
= 5.65/√200
= 0.3995
Hence, the standard error for the sample proportion is 0.3995.
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The measure of angle 7 is
pls help quickly
Answer:
209 degrees
Step-by-step explanation:
What level of measurement is required of the independent variable (iv) and dependent variable (dv) to conduct a chi-square analysis?
The level of measurement is required of the independent variable (iv) and dependent variable (dv) to conduct a chi-square analysis is "the chi-squared test for independence."
What is chi-square test?A chi-square (X²) statistic is a test which compares a model to real observed data. A chi-square statistic requires data that is random, raw, mutually exclusive, obtained from independent variables, & drawn from a large enough sample. Tossing a fair coin, for example, meets these criteria.
Some key features regarding chi-square test are-
Chi-square analysis is excellent for assessing such disparities in categorical variables, particularly nominal variables.X² is determined by the amount of the discrepancy between the observed and real values, its degrees of freedom, as well as the sample size.X² can be used to figure out if two variables are connected or independent.It can also be used to determine the goodness-of-fit between being an observed distribution or a theoretical frequency distribution.To know more about chi-square test, here
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PLEASE HELP‼️
You deposit $400 in an account that pays 5% annual interest How long will it take for the balance to double for each frequency of compounding?
a. annually
b. quarterly
c. daily
d. continuously
I NEED AN ANSWER for ALL 4‼️‼️‼️‼️‼️
Answer: hi lissette
Step-by-step explanation:
Answer:
Step-by-step explanation:
Annually: 14.21 years
Quarterly: 13.95 years
Daily: 13.86 years
Continuously: 13.86 years
:)
What type of graph would work best for displaying the color of fish found in Lake Powell?
A. Stem plot
B. Histogram
C. Bar graph
D. Boxplot
Overall, a bar graph would effectively convey the color information of fish found in Lake Powell by visually representing the different color categories and their corresponding frequencies or proportions.
The best option would depend on the specific data and purpose of the visualization. However, if the goal is to represent the color categories of fish in Lake Powell, a bar graph could be a suitable choice. Each bar would represent a color category, and the height of the bar could represent the frequency or proportion of fish in that color category.
By assigning each color category to a bar and varying the height of each bar based on the frequency or proportion of fish in that category, the bar graph provides a clear and visual representation of the distribution of fish colors in Lake Powell.
This allows viewers to easily compare the prevalence of different color categories, identify any dominant or rare colors, and gain insights into the overall color composition of the fish population in the lake.
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Which shows one way to determine the factors of 12x3 – 2x2 18x – 3 by grouping? 2x2(6x – 1) 3(6x – 1) 2x2(6x – 1) – 3(6x – 1) 6x(2x2 – 3) – 1(2x2 – 3) 6x(2x2 3) 1(2x2 3)
The factor of the given expression 12x^3 - 2x² + 18x-3 is as follows (6x-1)(2x²+3).
What is a quadratic equation?A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
The given expression is
12x^3 - 2x² + 18x-3
= 2x²(6x-1) + 3(6x-1)
= (6x-1)(2x²+3)
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Answer:
A.
Step-by-step explanation:
Can some one please help me i'll give brainliest..please actually answer all the questions. please don't not answer the right way!!!
1. List the ordered pairs for the graphed points.
Write your answer in the space below.
2. How many students were absent on day 3? Explain how you know.
Write your answer in the space below.
3. On which day were the greatest number of students absent? How many students were absent that day?
Write your answer in the space below.
4. Is the relation represented by the graph a function? Why or why not?
Write your answer in the space below.
Answer:
#1
(1,7) , (2,10) , (3,5) , (4,7) , (5,9)#2
5 students were absent on day 3#3
Day 2 had the greatest number of absent students. There were 10 absent students on that day.#4
The relation represented by the graph is a function. When performing the vertical line test, the vertical line does not intersect the graph more than once; therefore, it is a function.Step-by-step explanation:
Hope this helps
Help me out please!!!!!!!!!!!
Answer:
7.2
Step-by-step explanation:
So it says they all have the same area
6 * 6 = 36
4 * 9 = 36
So now you can divide to find the answer of Figure 2
36 divided by 5 is 7.2
You can check you your answer by multiplying
5 * 7.2 = 36
Answer:
x = 7.2
Step-by-step explanation:
you would divide 5 by 36 because each of the other shapes are equivalent to each other :D
it's important to conduct residual analysis before you begin the model building process so you will know if you're violating any of the assumptions of least squares regression before you build your complete 2nd order model.
Residual analysis is crucial before constructing a second-order regression model, as it allows us to identify any violations of the assumptions of least squares regression.
By conducting this analysis, we can ensure the validity and reliability of our model before proceeding with further model building. Residual analysis involves examining the residuals, which are the differences between the observed values and the predicted values from the regression model. By assessing the residuals, we can evaluate the assumptions underlying least squares regression, such as linearity, independence, and constant variance of errors.
Residual analysis helps us detect potential violations of these assumptions. For example, if the residuals exhibit a systematic pattern or curvature, it suggests that the relationship between the predictors and the response is nonlinear, indicating a need for a more complex model like a second-order polynomial. Additionally, if the residuals show heteroscedasticity (varying spread) or autocorrelation (dependence between residuals), the assumptions of constant variance and independence may be violated.
By conducting residual analysis before building the complete second-order model, we can identify these violations and take appropriate actions. This might involve transforming variables, adding interaction terms, or considering alternative modeling approaches. Residual analysis provides valuable insights into the data and guides the model-building process to ensure the resulting model is appropriate for the underlying relationships.
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i need help with this problem 5/6 divided by 1/4 please and thank you
Answer:
3 1/3.
Step-by-step explanation:
Find the LCD multiply, and that's how tou get your answer
Answer:
3 2/6 three and two sixths
Step-by-step explanation:
hope this helps!
could you help with
We have 3 triangles that are related in the image
We will use the sine relations to determine the value of x
For triangle ABD
\(\begin{gathered} \frac{24}{\sin d}=\frac{16}{\sin b}=\frac{2x+4+2x}{\sin a} \\ \\ \frac{24}{\sin d}=\frac{16}{\sin b}=\frac{4x+4}{\sin a} \\ \\ \end{gathered}\)For triangle ABC
\(\frac{24}{\sin c1}=\frac{E}{\sin b}=\frac{2x+4}{\sin a1}\)For triangle ACD
\(\frac{16}{\sin c2}=\frac{E}{\sin d}=\frac{2x}{\sin a2}\)Now solving the system of equations we have
\(\begin{gathered} 4x+4=20 \\ 4x=20-4 \\ 4x=6 \\ x=4 \end{gathered}\)The answer would be x = 4 units
Which of the following subsets of P2(R) are subspaces of P2(R)? Note: P2(R) is the vector space of all real polynomials of degree at most 2.A. {p(t) | p?(t)+1p(t)+6=0}B. {p(t) | p(?t)=?p(t) for all t}C. {p(t) | p(4)=7}D. {p(t) | \int_{-1}^{7}p(t)dt=0E. {p(t) | p?(8)=p(0)}F. {p(t) | p(3)=0}
The followings A, C, D, and F subsets of P₂ are subspace of P₂.
The subsets of P₂ that are subspace of P₂ are A, C, D, and F.
A.{p(t) | p'(t)+1p(t)+6=0} is a subspace of P₂ because it satisfies the criteria of being closed under addition and scalar multiplication.
B.{p(t) | p('t)='p(t) for all t} is not a subspace of P₂ because the derivative of p(0) does not equal p(4).
C. {p(t) | p(4)=7} is a subspace of P₂ because it satisfies the criteria of being closed under addition and scalar multiplication.
\({p(t) | \int_{-1}^{7}p(t)dt=0\) is constant } is a subspace of P₂ because it satisfies the criteria of being closed under addition and scalar multiplication.
E. {p(t) | '(8) = p(0)} is not a subspace of P₂ because the derivative of p(8) does not equal 0.
F. {p(t) | p(3)=0} for all t} is a subspace of P₂ because it satisfies the criteria of being closed under addition and scalar multiplication.
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If Angelina pics one marble from the bag without looking what is the probability that she will pick up black marble?
Answer:
i dont know how many balls there are
I have to use this diagram and its a fill in the blanks and it saysthe angle relationship shown are ____. the angles are ____and the choices are [vertical angles] [linear pain angles] [congruent] [supplementary]
the angle relationship shown are vertical angles. the angles are congruent
A market researcher for a consumer electronics company wants to study the media viewing behavior of residents of a particular area. A random sample of 80 respondents is selected, and each respondent is instructed to keep a detailed record of time spent engaged viewing content across all screens in a particular week. The results are as follows: Content viewing time per week: X = 44 hours, S = 5.7 hours. 28 respondents have high definition (HD) on at least one television set. Complete parts (a) through (e) below. a. Construct a 90% confidence interval estimate for the mean content viewing time per week in this area. Isusa (Round to two decimal places as needed.) b. Construct a 90% confidence interval estimate for the population proportion of residents who have HD on at least one television set. Osas (Round to four decimal places as needed.) c. Suppose that the market researcher wants to take another survey in a different location. What sample size is required to be 90% confident of estimating the population mean content viewing time to within + 2 hours assuming that the population standard deviation is equal to 6 hours? (Type a whole number.) d. How many respondents need to be selected to be 90% confident of being within 10.05 of the population proportion who have HD on at least one television set if no previous estimate is available? (Type a whole number.) Enter your answer in each of the answer boxes. e. Based on (C) and (d), how many respondents should the market researcher select if a single survey is being conducted? (Type a whole number.) Enter your answer in each of the answer boxes.
a. Construct a 90% confidence interval estimate for the mean content viewing time per week in this area. Isusa
90% confidence interval estimate for the mean content viewing time per week: (41.75, 46.25)
b. Construct a 90% confidence interval estimate for the population proportion of residents who have HD on at least one television set. Osas
90% confidence interval estimate for the population proportion: (0.1867, 0.3833)
c. Suppose that the market researcher wants to take another survey in a different location. What sample size is required to be 90% confident of estimating the population mean content viewing time to within + 2 hours assuming that the population standard deviation is equal to 6 hours? (Type a whole number.)
Sample size required: 653
d. How many respondents need to be selected to be 90% confident of being within 10.05 of the population proportion who have HD on at least one television set if no previous estimate is available? (Type a whole number.) Enter your answer in each of the answer boxes.
Sample size required: 461
e. Based on (C) and (d), how many respondents should the market researcher select if a single survey is being conducted? (Type a whole number.) Enter your answer in each of the answer boxes.
Sample size required: 653