Solve please will mark brainliest

The approximation for f(1.4) using Euler's method with two steps of equal size is -0.632.

Euler's method is a numerical method for approximating the solutions to differential equations. It works by approximating the derivative at each step and using it to estimate the next value of the function.

In this case, we are given the differential equation dy/dx = x-y-1 and the initial condition f(1)=-2. We want to find an approximation for f(1.4) using Euler's method with two steps of equal size, starting at x=1.

To use Euler's method, we first need to determine the step size, which is the distance between x-values at each step. Since we have two steps of equal size, the step size is (1.4-1)/2 = 0.2.

Next, we use the initial condition to find the first approximation:

f(1.2) ≈ f(1) + f'(1)*0.2

= -2 + (1 - (-2) - 1)*0.2

= -1.2

Now, we can use this approximation to find the second approximation:

f(1.4) ≈ f(1.2) + f'(1.2)*0.2

= -1.2 + (1.2 - (-1.2) - 1)*0.2

= -0.632

To learn more about  Euler's method :

https://brainly.com/question/14286413

#SPJ11

The area of the logo is given as 139 cm

In order to get the area of the shape, i would have to get the area of the triangles first

area of a triangle = 1/2 b * h

base = 9 / 2 = 4.5

h = 6

area = 1/2 * 9 * 6

= 27

Area of 2 triangle = 2 x 27

= 58

The are aof the square = a * a

= 9 * 9

= 81

The total area of the logo is given as 81 + 58

= 139 cm

Read more on area of a triangle here"https://brainly.com/question/17335144

#SPJ1

In linear regression, one variable, called a dependent variable, is related to one or more independent variables by a linear equation.

A function has the following format: y = f(x).

In which each value of y is a function of one value of x, and thus, x is the independent variable and y is the dependent variable.

That is, the input of the function is the independent variable and the output is the dependent variable.

In the case of multiple inputs, all the inputs are independent variables.

More can be learned about functions at https://brainly.com/question/24808124

#SPJ1

Answer:

a=30°; b=40°;c=40°; d=40°; e=110°: f=110°; g=30°; h=140°; i=70°; j=70°

The equation that represents the amount of water(y) present after x minutes is y = 90 - 5.8x.

An equation is expressing two different form of variables which are actually same.

Given a water tank has an emptying rate of 5.8 gallons of water minute and has 71 gallons after 5 minutes.

∴ In 5 minutes it can drian (5×5.8) gallons of water which is,

= 29 gallons.

So, initially the tank had ( 71 + 29) = 90 gallons of water.

Now, representing amount of water left in 'y' and time in minutes in 'x' the equation can be written as,

y = 90 - 5.8x.

learn more about equations here :

https://brainly.com/question/15707224

#SPJ1

Answer:3/2

Step-by-step explanation:

\(\frac{9}{6} = \frac{\frac{9}{3} }{\frac{6}{3} }=\frac{3}{2}\)

Answer:

Step-by-step explanation:

It can never be perfect, but what I see, I think yes, because u didn't rotate it 90 degrees since it's not a right triangle, but u did rotate it where it looks close to 90 degrees, so it does look like its 80 degrees as a rotation. Question, does it not say how to rotate it? Like 80 degrees clockwise, or 80 degrees counterclockwise?

Hope this helped!

Answer: Here below I attached a picture of my work.

Step-by-step explanation:

Answer:

14/24 or 58%

Step-by-step explanation:

Deviations from the mean must be squared so that their sum is not equal to zero.

The variance can be calculated using the following formula:

Variance = Sum of squared deviations from the mean / number of observations.

Deviations from the mean are calculated by subtracting the mean from each observation. Deviations can be negative or positive, depending on whether an observation is above or below the mean.

Now, coming back to the question, the reason why deviations from the mean must be squared when calculating variance is that the sum of deviations will always be zero. That means, the sum of negative deviations will cancel out the sum of positive deviations. So, to avoid that, we square each deviation, which makes them all positive. This way, we can avoid the cancellation of negative and positive deviations.

for such more question on Deviations

https://brainly.com/question/475676

#SPJ11

The probability of choosing a green tile and then a blue tile is given as follows:

1/7.

The parameters that are needed to calculate a probability are listed as follows:

Then the probability is then calculated as the division of the number of desired outcomes by the number of total outcomes.

For each outcome, the probabilities are given as follows:

Hence the probability is given as follows:

2/7 x 1/2 = 1/7.

Learn more about the concept of probability at https://brainly.com/question/24756209

#SPJ1

This measure of central tendency can be considered the most precise in option c. mean

The mean is a measure of central tendency that calculates the average of a set of values. It is often considered the most precise measure because it takes into account all the values in the dataset and provides a balanced representation.

The mean is calculated by summing all the values and dividing by the total number of values. Unlike the mode, which only identifies the most frequently occurring value, and the median, which represents the middle value, the mean incorporates all the values and provides a comprehensive summary of the dataset.

However, it is important to note that the mean can be sensitive to extreme values or outliers in the data.

For more questions like Data click the link below:

https://brainly.com/question/10980404

#SPJ11

hate to be that person but what she said

Answer:

Step-by-step explanation:

A cube has an edge length of 5 inches

When I know the side length of a cube, I can find its surface area and express it using appropriate units.

I can write and explain the formula for the surface area of ​​a cube.

The volume of a cube with edge length \(S^{}\) is .\(S^{3}\)

A cube has 6 faces and they are all identical squares. The surface area of ​​a cube with edge length \(S^{}\) is. 6 DIVIDE \(S^{2}\)

Kristen is attempting to solve the equation \(0=\sqrt{6x}-x\). Hence, option b. is the correct answer.

A radical equation has no solution if the square root of a negative number is involved in the equation. The left-hand side of equation b, √(6x), is always non-negative. But the right-hand side, -x, can be negative. So, there is no value of x that can satisfy the equation.

In other words, there is no real number x that would make the left-hand side equal to the right-hand side, so equation b has no solution.

Hence, Kristen is attempting to solve equation 0 = √(6x) - x.

Read more equations:

brainly.com/question/29115752

#SPJ4

The complete question is -

Kristen is solving a radical equation and determines that the equation has no solution. Which equation is Kristen attempting to solve?

a. \(\sqrt{27+6x} =x\)

b. \(0=\sqrt{6x}-x\)

c. \(\sqrt{4-x}+9=0\)

d. \(\sqrt{\frac{x}{8}} = \sqrt{90-x}\)

Answer: A

Step-by-step explanation: I would say A because the angle is greater than 90 degrees

Answer:

We have supplementary angles.

76 + 3x + 2 = 180

3x + 78 = 180

3x = 102

x = 34

Answer:

z = 103

x = 20

Step-by-step explanation:

See photo for steps. You got this… don’t give up. I believe you can do this. Comment if u need me to explain more :)

ANSWER:

a. 1950 people per square mile

b. The island's area got smaller

c.

STEP-BY-STEP EXPLANATION:

Population density is the average number of people living per unit area. It is calculated by dividing the total number of population of a geographical unit (in this case it is the island) by the total amount of surface.

a.

Therefore:

b.

Since the size of the island is halved without losing any people, we can conclude that the area has become smaller.

Therefore:

The island's area got smaller

c.

Since it is half the area, the new density would be:

The three-inch cube would be worth \(9\text{ lb}\times $20/\text{lb} = $180$.\)

Since the cube is made of silver, we know that the ratio of volume to weight is constant, meaning that the density of silver is the same throughout the cube. Therefore, if a two-inch cube of silver weighs 3 pounds, then its volume is \($(2\text{ in})^3=8\text{ in}^3$\) and its density is \(3\text{ lb}/8\text{ in}^3 = 0.375\text{ lb/in}^3$.\)

Now let's consider a three-inch cube. Its volume is \($(3\text{ in})^3=27\text{ in}^3$\), which is 3 times the volume of the two-inch cube. Since the density is the same, the weight of the three-inch cube will be 3 times the weight of the two-inch cube, or \(3\times 3\text{ lb}=9\text{ lb}$.\)

To find the value of the three-inch cube, we need to know the price of silver per pound. Let's assume it's \($$20$\) per pound (this is just an example). Then the three-inch cube would be worth \(9\text{ lb}\times $20/\text{lb} = $180$.\)

In general, the value of the three-inch cube would be proportional to the weight and the price of silver per pound.

Learn more about proportional

https://brainly.com/question/30675490

#SPJ4

Answer:

y = 5/2 - 3

Step-by-step explanation:

y = - 2/5x + 6

Slope: - 2/5 (slope of the perpendicular line: 5/2)

Point (0, -3)

y - - 3 = 5/2(x -0)

y + 3 = 5/2x

y = 5/2x - 3

Answer:

5.5 ft

Step-by-step explanation:

because its 4ft for every 1ft there's a ratio of 1:4 so 22 represents the 4 part of the ratio, hence 22 divided by 4 gives us 5.5 on the base

The simplified equation for the velocity (IROC) for any value of t using the difference quotient is v(t) = -10t + 30.

The velocity of an object is the rate of change of its position with respect to time. The derivative of the position function gives the velocity function.

To find the velocity function for the given rocket, we need to take the derivative of its position function, which is s(t) = -5t² + 30t + 2.

v(t) = s'(t) = lim(h→0) [s(t+h) - s(t)]/h

Plugging in the values of s(t+h) and s(t), we get:

v(t) = lim(h→0) [(-5(t+h)² + 30(t+h) + 2) - (-5t² + 30t + 2)]/h

Simplifying the expression, we get:

v(t) = lim(h→0) [-10th - 5h² + 30h]/h

v(t) = lim(h→0) [-10t - 5h + 30]

Taking the limit as h approaches 0, we get:

v(t) = -10t + 30

Therefore, the simplified equation for the velocity (IROC) for any value of t using the difference quotient is v(t) = -10t + 30.

For more questions like Limit click the link below:

https://brainly.com/question/12207539

#SPJ11

There are 28 landscapes.

From the question, we have

In five photos = 2 landscapes.

In 70 photos = 2/5*70

=28 landscapes.

Multiplication:

Mathematicians use multiplication to calculate the product of two or more numbers. It is a fundamental operation in mathematics that is frequently utilized in everyday life. When we need to combine groups of similar sizes, we utilize multiplication. The fundamental concept of repeatedly adding the same number is represented by the process of multiplication. The results of multiplying two or more numbers are known as the product of those numbers, and the factors that are multiplied are referred to as the factors. Repeated addition of the same number is made easier by multiplying the numbers.

To learn more about multiplication visit: https://brainly.com/question/5992872

#SPJ9

Answer:-72

Step-by-step explanation:

(6)*(-12)

-72

Answer:

Negative times positive = negative

negative x negative = positive

6 x 12 = 72

6 x -12 = -72

Hope this helps

Step-by-step explanation:

Answer:

11.7

Step-by-step explanation:

I just solved and added them all-

Answer:

85.006

hope this helps

have a good day :)

Step-by-step explanation:

The degree measure of each angle in the triangle are:

m angle l = 18.4

m angle J = 57.6

m angle K = 93

What is the Degree Measure?

The degree measure, also known as an angle measure, is a way to quantify the size of an angle in mathematics. The degree measure of an angle is typically represented by the symbol "degrees" (°) or simply "deg" and it is a unit of measurement.

In a triangle, the degree measure of all angles add up to 180 degrees. Therefore, we can use this property to find the degree measure of each angle in the triangle.

m angle l = (x + 5) deg

m angle J = (4x + 7) deg

m angle K = (7x) deg

So we can use the following equation:

m angle l + m angle J + m angle K = 180

(x + 5) + (4x + 7) + (7x) = 180

12x + 19 = 180

12x = 161

x = 13.4

Hence, the degree measure of each angle in the triangle are:

m angle l = (x + 5) deg = (13.4 + 5) = 18.4

m angle J = (4x + 7) deg = (413.4 + 7) = 57.6

m angle K = (7x) deg = (713.4) = 93

To learn more about Degree Measure. Visit

https://brainly.com/question/29165823

#SPJ1