Five cups of coffee cost £4.00 how much does 3 cups of coffee cost

Answer:

-11 is the answer. I think

Answer:

75°

Step-by-step explanation:

iyaazs humaizAnswer:

y-step explanation:

Answer: I think

#3- A

#4- C

Answer:

She paid it for 22 dollars.

Step-by-step explanation:

First, let's subtract 20 from 108 since we know Mai bought this in total.

108 - 20 = 88

Then, let's divide by 4 because we know there are 4 board games in total.

88/4 = 22.

This means that she paid 22 dollars for it. I hope this helps, I hope it's not wrong, but I don't think it is.

Answer:

23

Step-by-step explanation:

just divide.....fjf

Answer:

8

Step-by-step explanation:

The minus turns the base upside down

(1/4)^-3/2 = 4^(3/2)

The square root of 4 is 2

2^3 = 8

So the answer is 8.

The given differential equation n is xy" - 5xy' + 9y = 0. To show that \(y = x^3\)is a solution to this equation, we substitute y =\(x^3\)into the differential equation and demonstrate that it satisfies the equation.

a. To show that y = x^3 is a solution to the differential equation xy" - 5xy' + 9y = 0, we substitute y = x^3 into the equation:

\(x(x^3)'' - 5x(x^3)' + 9(x^3) = 0\)

Taking derivatives:

\(x(6x - 10) - 5x(3x^2) + 9x^3 = 0\)

\(6x^2 - 10x - 15x^3 + 9x^3 = 0\)

\(-6x^2 - x + 9x^3 = 0\)

Simplifying the equation:

\(9x^3 - 6x^2 - x = 0\)

The equation holds true, which confirms that \(y = x^3\) is a solution to the given differential equation.

b. To find a second independent solution, we use the method of reduction of order. Let y = v(x)y1(x), where y1(x) = x^3 is the known solution. Substituting this into the differential equation, we have:

\(x^2v''(x)y1(x) + x^2v'(x)y1'(x) - 5xv'(x)y1(x) + 9v(x)y1(x) = 0\)

Simplifying the equation and substituting y1(x) = x^3:

\(x^2v''(x)x^3 + x^2v'(x)3x^2 - 5xv'(x)x^3 + 9v(x)x^3 = 0\)

\(x^5v''(x) + 3x^4v'(x) - 5x^4v'(x) + 9x^3v(x) = 0\)

\(x^5v''(x) - 2x^4v'(x) + 9x^3v(x) = 0\)

Next, we can simplify further and divide the equation by x^3:

\(x^2v''(x) - 2xv'(x) + 9v(x) = 0\)

This is a second-order linear homogeneous differential equation, which can be solved using various methods, such as the method of undetermined coefficients or the method of variation of parameters. Solving this equation will provide us with a second independent solution, y2(x), to the original differential equation\(x^2y" - 5xy' + 9y = 0.\)

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Answer:

the missing blank for forks is 0 and the missing blank for spoons is 20

Step-by-step explanation:

All of the following are measures of central tendency except the range

Mean

It is defined as the single number that represents the mean value for the given set of data or the closed value for each entry given in the set of data.

The mode, median, and mean are the three primary metrics for assessing central tendency. These metrics each give a different indication of the average or central value in the distribution.

Mode

The highest frequency of data and how many times the element is repeated in the data set is known as the mode value.

Median

A median is a middle number in a series of numbers that have been arranged to lift, and it might be more informative of the set of data than the average.

Mean, median and mode are different measures of center in a numerical data set. They each try to summarize a dataset with a single number to represent a typical data point from the dataset.

When there are extremes in the sequences that might affect the average of the numbers the median is sometimes employed instead of the mean.

Thus, all of the following are measures of central tendency except the range

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Answer:

2*2*11

Step-by-step explanation:

44 = 4*11

But 4 isn't prime

  = 2*2*11

All of these are  prime

Answer:

Letter A because both of them are SSS

Step-by-step explanation:

The probability of having two or more red marbles is 1/2.

Based on the information provided, the valid conclusion to draw from the study would be:

c) Higher grades result in above-average teaching evaluations.

To find the probability of having two or more red marbles, sum the probabilities of having 2 red marbles and having 3 red marbles.

P(Two or more red marbles) = P(Number of red marbles = 2) + P(Number of red marbles = 3)

P(Two or more red marbles) = 3/8 + 1/8

P(Two or more red marbles) = 4/8

P(Two or more red marbles) = 1/2

Considering the given study:

The study found a direct correspondence between higher grades and more positive evaluations. This implies that when teachers give higher grades, it leads to better evaluations of their teaching performance. Therefore, higher grades are associated with above-average teaching evaluations; option C.

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Answer:

Step-by-step explanation:

They are both C3H8

There are

3 carbons

8 hydrogens

Or put in the form that the table is written

Element          # of atoms  

Hydrogen           8

Carbon                3

The statement "If f(x) is continuous on the closed interval [a, b], then f(x) must have an absolute maximum and an absolute minimum on the interval" is not true if we replace the closed interval [a, b] with the open interval (a, b).

Counterexample: Let f(x) = 1/x on the open interval (0, 1). Since 1/x is continuous on (0, 1), we can apply the Extreme Value Theorem to conclude that f(x) must have an absolute maximum and an absolute minimum on (0, 1).

However, we can see that f(x) does not have an absolute maximum on (0, 1) since as x approaches 0, f(x) approaches positive infinity.

The Extreme Value Theorem states that if a function is continuous on a closed interval, then it must have an absolute maximum and an absolute minimum on that interval.

However, if the interval is not closed, then the theorem does not necessarily hold. The counterexample above shows that the function 1/x does not have an absolute maximum on the open interval (0, 1), even though it is continuous on that interval. Therefore, the statement is not true if we replace the closed interval [a, b] with the open interval (a, b).

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Answer: im sorry that nobody got to you, im having the same problem right now

Step-by-step explanation:

Answer: FALSE

Step-by-step explanation:

x ∧ y is true only when x and y are both true

So, since r and s are both false, r ∧ s is also false.

Therefore, s ∧ (r ∧ s) is false since r ∧ s is false.  

False. the statement "If a variable x does not depend on a variable y, both coefficients are equal to zero" is false.

The coefficient of determination (R-squared) and the coefficient of correlation (Pearson's correlation coefficient) are related but distinct measures.

The coefficient of determination, denoted as R², measures the proportion of the variance in the dependent variable (y) that can be explained by the independent variable(s) (x). It ranges from 0 to 1, where a value of 0 indicates that the independent variable(s) do not explain any of the variance in the dependent variable, and a value of 1 indicates that the independent variable(s) completely explain the variance in the dependent variable.

On the other hand, the coefficient of correlation, denoted as r, measures the strength and direction of the linear relationship between two variables (x and y). It also ranges from -1 to 1, where a value of -1 indicates a perfect negative linear relationship, a value of 0 indicates no linear relationship, and a value of 1 indicates a perfect positive linear relationship.

If a variable x does not depend on variable y, it means there is no linear relationship between the two variables. In this case, the coefficient of correlation (r) would be 0, indicating no linear relationship. However, the coefficient of determination (R²) could still be non-zero if there are other independent variables that explain the variance in the dependent variable y.

Therefore, the statement "If a variable x does not depend on a variable y, both coefficients are equal to zero" is false.

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The standard deviation of the data in this problem is given as follows:

5.

The mean of the data-set in this problem is given as follows:

M = (12 + 23 + 14 + 18 + 25)/5

M = 18.4.

The sum of the differences squared between each observation and the mean is given as follows:

(12 - 18.4)² + (23 - 18.4)² + (14 - 18.4)² + (18 - 18.4)² + (25 - 18.4)² = 125.2.

The division of the differences squared by the sample size is given as follows:

125.2/5 = 25.04.

The square root of the above number is given as follows:

5.

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Answer:

sure

Step-by-step explanation:

well, from 1990 to 1998 is 8 years, and we know the amount went from $4800 to $6300, let's check for the rate of growth.

\(\qquad \textit{Amount for Exponential Growth} \\\\ A=P(1 + r)^t\qquad \begin{cases} A=\textit{accumulated amount}\dotfill & \$6300\\ P=\textit{initial amount}\dotfill &\$4800\\ r=rate\to r\%\to \frac{r}{100}\\ t=\textit{years}\dotfill &8\\ \end{cases} \\\\\\ 6300=4800(1 + \frac{r}{100})^{8} \implies \cfrac{6300}{4800}=(1 + \frac{r}{100})^8\implies \cfrac{21}{16}=(1 + \frac{r}{100})^8\)

\(\sqrt[8]{\cfrac{21}{16}}=1 + \cfrac{r}{100}\implies \sqrt[8]{\cfrac{21}{16}}=\cfrac{100+r}{100} \\\\\\ 100\sqrt[8]{\cfrac{21}{16}}=100+r\implies 100\sqrt[8]{\cfrac{21}{16}}-100=r\implies \stackrel{\%}{3.46}\approx r\)

now, with an initial amount of $4800, up to 2007, namely 17 years later, how much will that be with a 3.46% rate?

\(\qquad \textit{Amount for Exponential Growth} \\\\ A=P(1 + r)^t\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &4800\\ r=rate\to 3.46\%\to \frac{3.46}{100}\dotfill &0.0346\\ t=years\dotfill &17\\ \end{cases} \\\\\\ A=4800(1 + 0.0346)^{17} \implies A=4800(1.0346)^{17}\implies A \approx 8558.02\)

Answer:

x = 94

Step-by-step explanation:

The sum of the 4 angles in a quadrilateral = 360°

Sum the 4 angles and equate to 360

x + x + 2x - 75 + x - 35 = 360

5x - 110 = 360 ( add 110 to both sides )

5x = 470 ( divide both sides by 5 )

x = 94

Answer:

64.64

Step-by-step explanation:

ok so in triangle, the angles add up to 180 degrees

so 180 - 62 - 53.4 = 64.6

the upper bound of 64.6 is 64.64 because it rounds up to 64.6 (4<5)

Answer:

5.6

Step-by-step explanation:

11*7=77

11.8*7= 82.6

82.6-77=5.6

Answer:

You multiply both sides of this inequality by −1, we get −4 > −2.

Answer:

x = 6

Step-by-step explanation:

Equation:

\(\frac{3}{21} = \frac{x}{42}\\\\Cross - multiply\\\\3 *42 = 21x\\\\126 = 21x\\\\x = 6\)

-Chetan K

Answer:

Pretty sure it would be 3.5 or 3.6 somewhere in that zone :)

Answer:

Here’s the answer! Best of luck.

Step-by-step explanation:

Answer:

1870

Step-by-step explanation:

1500 + (6 + 4) * 37

= 1500 + 10 * 37

= 1500 + 370

= 1870

Answer:

1870

Step-by-step explanation:

1500+(6+4)37

=1500+10*37

=1500+370

=1870