can someone answer my new math questions please

Answer: I got 60d+115f

Step-by-step explanation:

Hope this helps.

Answer:

60d+115f

Step-by-step explanation:

if you were basically asking to simplify then this is your answer

Answer:

vertex form:  y = a(x – h)2 + k, where (h, k) is the vertex

standard form:  y = ax^2 + bx + c

Step-by-step explanation:

not certain what the qustion is

The statistical techniques of analysis of variance (ANOVA) and analysis of covariance (ANCOVA) are used to test the validity of the hypothesis regarding the comparison of group mean values.

The term "parametric approach" refers to a statistical technique used to compare the means of two normally distributed continuous variables.

In contrast to ANOVA, which is used to compare the means among three or more groups, the Student's t test (also known as the T test) is used to compare the means between two groups.An ANOVA test with a significant P value identifies at least one pair in which the mean difference was statistically significant.

The post-hoc test (multiple comparisons) is utilized to determine whether pair(s) are significant. When at least one covariate (continuous variable) in an ANOVA test is altered to eliminate confounding variables from the outcome, the procedure is known as an ANCOVA. Because inferences about means are made by analyzing variance, the ANOVA test (F test) is referred to as "Analysis of Variance" rather than "Analysis of Means."

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Answer:

hello!!

your answer is 22

Step-by-step explanation:

Bro each ticket is 4$. You just divide the money she earned with how much a ticket costs;

284/4 = 71 tickets

True. The equation Ax = 0 gives an explicit description of its solution set.

When A is a matrix and x is a vector, the equation Ax = 0 represents a homogeneous system of linear equations. The solution set of this system consists of all vectors x that satisfy the equation and make the left-hand side equal to zero.

The explicit description of the solution set can be obtained by using techniques such as Gaussian elimination or matrix factorizations. These methods allow you to perform row operations on the augmented matrix [A | 0] to obtain the reduced row echelon form. The reduced row echelon form reveals the structure of the solution set by identifying pivot and free variables.

If there are no free variables (all columns of A are pivot columns), then the solution set consists of only the zero vector, x = 0. In this case, the solution set is a singleton set {0}.

If there are one or more free variables, you can express the solutions in terms of those variables. The free variables introduce parameters that allow for infinitely many solutions. The explicit description of the solution set will involve expressing the dependent variables (those corresponding to pivot columns) in terms of the free variables.

In summary, the equation Ax = 0 gives an explicit description of its solution set, either as the singleton set {0} or as a set of vectors expressed in terms of free variables.

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The ratios involved in the ROI formula are the net profit and the investment cost.

The ROI (Return on Investment) formula includes the following ratios:

Net Profit: The net profit represents the profit gained from an investment after deducting expenses, costs, and taxes.

Investment Cost: The investment cost refers to the total amount of money invested in a project, including initial capital, expenses, and any additional costs incurred.

The ROI formula is calculated by dividing the net profit by the investment cost and expressing it as a percentage.

ROI = (Net Profit / Investment Cost) * 100%

Therefore, the ratios involved in the ROI formula are the net profit and the investment cost.

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Answer:

The answer would be 70.

Step-by-step explanation:

To solve you substitute the x with 4, getting you the starting equation of 5(2(4)+6). Parentheses means to multiply and starting with the rules of PEMDAS you would do 2 times 4 equals 8. You would then do 8 + 6, which is equal to 14. You now have the problem 5(14), which is 70. I hope this helps! :) Have a great day! ^^

\(\qquad \sf  \dashrightarrow \: 5(2x + 6)\)

\(\qquad \sf  \dashrightarrow \: 5(2(4) + 6)\)

\(\qquad \sf  \dashrightarrow \: 5(8 + 6)\)

\(\qquad \sf  \dashrightarrow \: 5(14)\)

\(\qquad \sf  \dashrightarrow \: 70\)

1) JKLM is a parallelogram, \(\overline{KL} \cong \overline{LM}\) (given)

2) JKLM is a rhombus (a parallelogram with a pair of consecutive congruent sides is a rhombus)

We need to determine the number of ways to rearrange the sequence 1, 2, 3, 4, 5 such that there are no three consecutive terms that are increasing or decreasing.

To count the number of valid rearrangements, we can approach the problem using dynamic programming. Let's define two variables: inc_count and dec_count. The inc_count represents the number of valid rearrangements ending in an increasing subsequence, and dec_count represents the number of valid rearrangements ending in a decreasing subsequence.

Initially, inc_count and dec_count are both set to 1 because we have only one element in the sequence. Starting from the second element, we update inc_count and dec_count based on the previous values. For each new element, we can append it to either an increasing subsequence or a decreasing subsequence.

By considering all possible cases, we can calculate the total number of valid rearrangements by summing inc_count and dec_count for the last element. In this case, the number of valid rearrangements is 13.

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Answer:

I believe it is D. 3.1

I hope this helped!

Answer:

21.6 liters

Step-by-step explanation:

40 drops make up a volume of 10 mL

Therefore, the volume of 1 drop of water = 10mL/40 = 1/4 mL= 0.25mL

Since the tap loses 1 drop of water in 1 sec, it loses 0.25mL of water in 1 second

60 seconds make up 1 second so volume of water lost in 1 minute = 0.25 x 60 = 15 mL

60 minutes make up 1 hour so volume of water lost in 1 hour = 15 x 60 = 900 mL

24 hours make up a day so volume of water lost in 1 day = 900 x 24 = 21,600 mL

Since 1000 mL make up 1 liter, divide by 1000 to get volume in liters

Volume of water lost in 1 day = 21600/1000 = 21.6 liters

Can be done as one equation

V lost in one day = 0.25 x 3600 x 24 mL = 21600 mL = 21.6 L

Answer:

answer is

\( {2.94 \times 10}^{ - 3} \)

Step-by-step explanation:

3*1/1000-6*1/100000=0.003-0.00006

=

\( {2.94 \times 10}^{ - 3} \)

According to simplification of fractions, the conjecture "Odell and paint the same amount" is proven to be true.

What is a conjecture?

A mathematical assertion that hasn't been thoroughly proven is referred to as a conjecture. When one observes a pattern that holds true in numerous instances, hypotheses start to form. A pattern may be true in many instances, but that does not guarantee that it will be true in all instances.

To determine if Odell and Tamra painted the same amount, we need to compare the amounts they painted.

Odell painted 2/6 of a wall, which can be simplified to 1/3 of a wall.

Tamra painted 1/3 of a wall, which is also equivalent to 1/3 of a wall.

Since both Odell and Tamra painted 1/3 of a wall, it appears that the conjecture is true, and they painted the same amount.

We can also see this by comparing the fractions they painted directly.

1/3 = 1/3

Therefore, it is likely that Odell and Tamra painted the same amount, and the conjecture is true.

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Based on the given dataset and information that the last digit of the CUNY ID is 5, the following steps are taken to analyze the data. The OLS estimates of coefficients B and β are calculated, and the predicted values of Y for each observation are determined. Residuals are calculated, along with the explained sum of squares (ESS), total sum of squares (TSS), and residual sum of squares (RSS). The coefficient of determination (R²) is calculated to assess the goodness of fit. Finally, the predicted value of Y is determined when X is equal to the last digit of the CUNY ID + 1.

a) To regress Y on X, we use ordinary least squares (OLS) estimation. The OLS estimates of coefficients B and β represent the intercept and slope, respectively, of the regression line. The coefficients are determined by minimizing the sum of squared residuals.

b) The predicted value of Y for each observation is obtained by plugging the corresponding X values into the regression equation. In this case, since the last digit of the CUNY ID is 5, the predicted value of Y would be calculated for X = 5.

c) Residuals are the differences between the observed Y values and the predicted Y values obtained from the regression equation. To calculate the residual for each observation, we subtract the predicted Y value from the corresponding observed Y value.

d) The explained sum of squares (ESS) measures the variability in Y explained by the regression model, which is calculated as the sum of squared differences between the predicted Y values and the mean of Y. The total sum of squares (TSS) represents the total variability in Y, calculated as the sum of squared differences between the observed Y values and the mean of Y. The residual sum of squares (RSS) captures the unexplained variability in Y, calculated as the sum of squared residuals.

e) The coefficient of determination, denoted as R², is a measure of the proportion of variability in Y that can be explained by the regression model. It is calculated as the ratio of the explained sum of squares (ESS) to the total sum of squares (TSS).

f) To predict the value of Y when X equals the last digit of the CUNY ID + 1, we can substitute this value into the regression equation and calculate the corresponding predicted Y value.

g) The coefficient B represents the intercept of the regression line, indicating the expected value of Y when X is equal to zero. The coefficient β represents the slope of the regression line, indicating the change in Y associated with a one-unit increase in X. The interpretation of β depends on the context of the data and the units in which X and Y are measured.

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Answer:

it is a scalar quantity because it involves magnitude only.

Step-by-step explanation:

Answer:

1.32/100

Step-by-step explanation:

(1.32×100)/(1×100) = 132/100

It can be written as 132%= 132/100 or 132/100

4. To simplify 132/100 to its lowest terms, find LCM for the 132 and 100

4 is LCM for 132 and 100.

5. Divide numerator and denominator by 4

132/100=(132/4)/(100/4)=33/25.

33/25 is a simplest fraction for the decimal point number 1.32.

Answer:

132/100

Step-by-step explanation:

The actual area of the closet's floor is 3.52 square meters.

To find the actual area of the closet's floor, we first need to convert the dimensions from the scale drawing to their actual dimensions.

According to the given scale, 2 cm on the scale drawing represents 1 meter in reality. Thus, to convert the dimensions from the scale drawing to actual dimensions, we need to multiply each dimension by the conversion factor:

Actual length = 4.4 cm × (1 m / 2 cm) = 2.2 m

Actual width = 3.2 cm × (1 m / 2 cm) = 1.6 m

Now that we have the actual dimensions, we can calculate the actual area of the closet's floor:

Actual area = Actual length × Actual width

= 2.2 m × 1.6 m

= 3.52 square meters

Therefore, the actual area of the closet's floor is 3.52 square meters.

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The time taken by the swimmer to reach the lowest depth will be 9 seconds. The correct option is D.

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that a swimmer dives straight into the ocean. His depth, d, in meters after t seconds, can be modeled using the equation d = (t - 3)² - 16.

The time will be calculated as below;-

d = ( t - 3 )² - 16.

16 = ( t - 3 )² - 16

32 =  ( t - 3 )²

√32 = t - 3

5.67 = t - 3

t = 5.67 + 3 = 8.67 ≅ 9 seconds

Therefore, the time taken by the swimmer to reach the lowest depth will be 9 seconds. The correct option is D.

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The probability that a class of 50 has an average midterm mark that is less than 75 is value=0

Average is the mathematics mean, and is calculated by means of adding a group of numbers and then dividing with the aid of the count of these numbers. for instance, the average of 2, three, three, five, 7, and 10 is 30 divided with the aid of 6, that is five.

The common is described as the implied value that is identical to the ratio of the sum of the number of a given set of values to the whole wide variety of values gift within the set.

There are three primary sorts of common: imply, median, and mode. each of those techniques works slightly differently and frequency effects in barely specific regular values. The suggestion is the maximum normally used average. To get the suggested fee, you add up all of the values and divide this total by using the number of values.

The probability that a class of 50 has an average midterm mark that is less than 75

n = 50

P(<75)=P(Z<75)

P(Z<75−786√50)

P(Z<−3.5355)

We will look for the value in the StandardNormal able. We will get the value=0

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The formula for calculating the confidence interval of a sample mean is sample mean ( /-) critical value z-score times the standard error of the sampling distribution of the mean.

Confidence interval is a range of values that enclose the true value of a population parameter with a specified level of confidence. It is used in inferential statistics to estimate an unknown parameter using a sample. The value of the confidence interval depends on the level of confidence chosen by the researcher which is usually 90%, 95%, or 99%.The correct answer is b which is the formula for calculating the confidence interval of a sample mean.

It is the sample mean plus or minus the critical value z-score times the standard error of the sampling distribution of the mean. The standard error of the sampling distribution of the mean is the standard deviation of the sample mean and is estimated using the formula, standard deviation of the population divided by the square root of the sample size.The critical value of the z-score depends on the level of confidence chosen by the researcher.

A 90% confidence interval has a critical value of 1.645, a 95% confidence interval has a critical value of 1.96, and a 99% confidence interval has a critical value of 2.58. Therefore, the formula for calculating the confidence interval of a sample mean is sample mean ( /-) critical value z-score times the standard error of the sampling distribution of the mean.

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Answer:

- 327 can be added to 327 to get a sum of 0.

Hope this helps :)

Step-by-step explanation:

327 + (- 327) = 0 ✓

Answer:

2,610 rounded is still 2,610

To provide the final numerical answer, the exact values of f(x1), f(x2), f(x3), and f(x4) need to be calculated using a calculator or numerical approximation techniques.

To approximate the integral of the function f(x) = x · 2^x over the interval [0, 4], we can use the midpoint rule with four equal-width subintervals. The midpoint rule estimates the integral by evaluating the function at the midpoint of each subinterval and multiplying it by the width of the subinterval.

To apply the midpoint rule, we divide the interval [0, 4] into four equal-width subintervals. The width of each subinterval is (4-0)/4 = 1.

The midpoints of the subintervals are located at x = 0.5, 1.5, 2.5, and 3.5. Let's denote these midpoints as x1, x2, x3, and x4, respectively.

For each subinterval, we evaluate the function f(x) = x · 2^x at the corresponding midpoint and multiply it by the width of the subinterval:

I ≈ Δx [f(x1) + f(x2) + f(x3) + f(x4)]

Now, let's calculate the values of f(x) at each midpoint:

f(x1) = 0.5 · 2^(0.5) = 0.5 · sqrt(2)

f(x2) = 1.5 · 2^(1.5)

f(x3) = 2.5 · 2^(2.5)

f(x4) = 3.5 · 2^(3.5)

Finally, we substitute these values into the midpoint rule formula:

I ≈ 1 [f(x1) + f(x2) + f(x3) + f(x4)]

Replace the values of f(x) at each midpoint and simplify to find the approximate value of the integral.

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Answer:

4y⁸

Step-by-step explanation:

6x⁰y⁸-(2y²)⁴

x⁰=1 and

power product rule for (2y²)⁴ = 2y²ˣ⁴ = 2y⁸

6y⁸- 2y⁸

4y⁸

The simplified form of the given expression is \(-10y^{8}\).

The given expression is \(6x^{0}y^{8}-(2y^{2} )^{4}\).

We need to solve the given expression.

Exponential expressions are just a way to write powers in short form. The exponent indicates the number of times the base is used as a factor.

The exponential expression can be solved using basic exponent rules:

1) \((a^{m})^{n}=a^{mn}\)

2) \(a^{0}=1\)

Now, \(6\times 1\times y^{8}-(2y^{2} )^{4}\)

=\(6y^{8}-16y^{8} =-10y^{8}\)

Therefore, the simplified form of the given expression is \(-10y^{8}\).

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Answer:

{(–4, 4), (–2, 4), (1, 4), (5, 4)}

plz give brainlist

Step-by-step explanation:

it is the only one where each input has a unique output

Float rate_of_pay  a declaration for a variable rate_of_pay that can hold values like 11.50 or 12.75.

What is   float rate_of_pay?

Is a fixed or floating rate preferable?

float rate_of_pay

rate_of_pay = 11.50, 12.75;

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