Can someone please answer and explain??

Answer:

Yes, the distance formula, which is the formula shown, is used to find the distance between two points.

Step-by-step explanation:

Answer:

22.73

Step-by-step explanation:

The mass of the blue copper sulfate crystal is two-thirds the mass of the red fluorite crystal , The mass of the blue copper sulfate crystal is 20 grams .

Given that, the mass of the blue copper sulfate crystal is two-thirds the mass of the red fluorite crystal.

Let the mass of blue copper sulfate crystal be ‘m’.

The mass of the red fluorite crystal is 30 g.

Mass of blue copper sulfate crystal = 2/3 x Mass of red fluorite crystal

                                                        m  = 2/3 × 30m

                                                           = 20 grams∴

The mass of the blue copper sulfate crystal is 20 grams.

The mass of the blue copper sulfate crystal is calculated using the given information. The mass of the blue copper sulfate crystal is two-thirds the mass of the red fluorite crystal.

Mass of blue copper sulfate crystal = 2/3 x Mass of red fluorite crystal

Let the mass of blue copper sulfate crystal be ‘m’. The mass of the red fluorite crystal is 30 g.

Substituting the values in the above formula, we get:

m = 2/3 × 30m

   = 20 grams

Hence, the mass of the blue copper sulfate crystal is 20 grams.

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Answer:

-300

Step-by-step explanation:

Step 1:  Find the amount Elmer's funds decreased after purchasing the rabbits:

Let x represent Elmer's funds.

Since Elmer bought five rabbits for $10 each, he lost $10 5 times.

x - (10 * 5)

x - 50

Thus, Elmer lost (spent) $50 for the 5 rabbits.

Step 2:  Find the amount Elmer's funds decreased after purchasing the  cupboards:

Since Elmer bought four cupboards for $70 each, he lost $70 4 times:

x - (50 + (70 * 4))

x - (50 + 280)

x - 330

Thus, after purchasing the rabbits and cupboards, Elmer lost $330.

Step 3:  Find the amount Elmer's funds increased after finding the twenty-dollar bill:

Since Elmer found a twenty-dollar bill, he gained $20

x - (330 + 20)

x - 310

Step 4:  Find the amount Elmer's funds increased after returning one rabbit:

Since Elmer returned one rabbit, he gained $10:

x - (310 + 10)

x - 300

Thus, Elmer's funds changed totally by -$300.

Putting all the information together, we have:

x - 10 - 10 - 10 - 10 - 10 - 70 - 70 - 70 - 70 + 20 + 10

x - 50 - 280 + 30

x - 330 + 30

x - $300

The general form of the solution of a linear homogeneous recurrence relation with characteristic polynomial having precisely the roots 1, -1, -2, -3, and 4 can be written as:

c1(1^n) + c2((-1)^n) + c3((-2)^n) + c4((-3)^n) + c5(4^n)

where c1, c2, c3, c4, and c5 are constants determined by the initial conditions.

To explain why in detail, we need to first understand what a linear homogeneous recurrence relation and its characteristic polynomial are.

A linear homogeneous recurrence relation is a mathematical equation that describes a sequence of numbers where each term depends only on the previous terms in the sequence. The general form of a linear homogeneous recurrence relation is:

an = c1an-1 + c2an-2 + ... + ckank

where a0, a1, a2, ..., ak are the initial conditions, and c1, c2, ..., ck are constants.

The characteristic polynomial of a linear homogeneous recurrence relation is defined as the polynomial obtained by setting an=0 and solving for the values of k that make the equation true. For example, the characteristic polynomial of the equation an = 2an-1 - an-2 is k^2 - 2k + 1 = 0.

The roots of the characteristic polynomial determine the form of the solution to the recurrence relation. In general, if the characteristic polynomial has distinct roots, the solution can be written as a linear combination of terms of the form ar^n, where a and r are constants determined by the initial conditions and the roots of the polynomial.

In the specific case where the characteristic polynomial has precisely the roots 1, -1, -2, -3, and 4, the general solution takes the form given above, with each term in the form c_i(r_i)^n, where r_i is one of the roots and c_i is a constant determined by the initial conditions.

This can be derived from the fact that each term in the solution must satisfy the recurrence relation, and the sum of these terms will also satisfy the recurrence relation. By setting the initial conditions, we can solve for the constants c_i and obtain the unique solution to the recurrence relation.

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Answer:

I believe it is C.

Answer:

B

Step-by-step explanation:

because I put it on the calculator and got 0.0195, and they give us 1.95, we have to move the decimal two times in front, that is -2. So the answer is B.  

Answer:

Step-by-step explanation:

As you move from left to right along the graph, each y-value gets larger and larger.  Therefore the y value is always increasing.  The correct answer is D.

If the point M (4,3) is translated using the rules (x, y) ⇒ (x, y-2),  then the coordinates of the M' = (4,1)

The point is M(4,3)

The translation rules is

(x, y) ⇒ (x, y-2)

The translation states that the movement of the graph either horizontally  or vertically. When we translate the graph, the shape and size will not change, only the coordinates of the graph changes.

We know the values of

x = 4

y = 3

Substitute the values in the equation

The coordinates of the M' = (x, y-2)

= (4, 3-2)

= (4,1)

Hence, if the point M (4,3) is translated using the rules (x, y) ⇒ (x, y-2),  then the coordinates of the M' = (4,1)

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Answer:

y=5x

.-.-.-.

jhvghcfghvbkhhx

Answer:

D

Step-by-step explanation:

You find the slope by doing \(\frac{y_{2}-y_{1} }{x_{2}-x_{1}}\)

The slope is 5

Residual Plot A indicates that the linear model is not appropriate because the fanned pattern shows that the model's predicting power decreases as the values of the explanatory variable increases. Residual Plot B indicates that the linear model is appropriate because the scattered residuals suggest a linear relationship.

Residual Plot A shows a fanned pattern which indicates that the linear model is not appropriate. This means that the model's predicting power decreases as the values of the explanatory variable increases. This suggests that the relationship between the dependent and independent variables is not linear and a different model may be necessary. Residual Plot B, on the other hand, shows a scattered pattern which suggests that the linear model is appropriate. The scattered pattern indicates that the data points are randomly distributed, which is a sign of a linear relationship. This indicates that the linear model is an appropriate fit for the data.

the complete question is :

Tell what each of the residual plots to the right indicates about the appropriateness of the linear model that was fit to the data. (a). Choose the best answer for residuals plot A. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases. B. The fanned pattern indicates that the linear model is not appropriate. C. The model's predicting power increases as the values of the explanatory variable increases. The scattered residuals plot indicates an appropriate linear model. (b). Choose the best answer for residuals plot A. The scattered residuals plot indicates an appropriate linear model. B. The curved pattern in the residuals plot indicates that the linear model is not appropriate. The relationship is not linear. C. The fanned pattern indicates that the linear model is not appropriate. The model's predicting power decreases as the values of the explanatory variable increases.

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Use parentheses that may or may not contain parameters directly after the function name to invoke the function.

As part of GAIA, the AI created for Project Zero Dawn in reaction to the Faro Plague, the subordinate functions are a part. The Faro Swarm's deactivation and the planet's terraforming are all objectives of Project Zero Dawn, and they are all accomplished through their extensive suite of subfunctions, each of which is dedicated to a particular purpose.

There are nine supporting roles.

A top engineer on the Zero Dawn project known as an Alpha created each of the nine subordinate functions. They were supported by a project development team made up of professionals in their industry who were well-known throughout the world.

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Answer:

Slope: 1

__________

y-intercept: (0,0)

Step-by-step explanation:

Answer:

There are 3 possible values for a.

Step-by-step explanation:

a/b=2/3

3a=2b

If b>5 and b<13

apply all possible values

b=6 -> 3a=12 ==> a=4 1st possibility

b=7 -> 3a=14 ==> a=4.something Not a possibility

b=8 -> 3a=16 ==> a=5.something Not a possibility

b=9 -> 3a=18 ==> a=6 2nd possibility

b=10 -> 3a=20 ==> a=6.something Not a possibility

b=11 -> 3a=22 ==> a=7.something Not a possibility

b=12 -> 3a=24 ==> a=8  3rd possibility

Answer:g

Step-by-step explanation:

g

We know 3 angles sum to 180 degrees {in a triangle]. Thus, we can write:

We are given Angles 2 and 3 and are told to find Angle 1. We substitute and do a bit algebra to figure Angle 1 out. The steps are shown below:

The last answer choice is correct.

Answer:

C

Step-by-step explanation:

Complementary = 180°

When adding up angles 2 & 4 you find that they are on a straight line. A straight line is 180°.

Step-by-step explanation:

x=54/1

y=56/4

because 50y=2820

The base is a square, so the area of the square is (10 cm)² = 100 cm²

To find the area of each triangle use the formula

base • height

10 cm • 9 cm = 90 cm²

now multiply by the number of triangles

90 cm • 4 = 360 cm²

Add the area of the square:

100 cm² + 360 cm² = 460 cm²

I hope it's correct

Answer:

SA = 280 cm²

Step-by-step explanation:

SA = area of base + area of 4 congruent triangles

     = 10² + (4 × \(\frac{1}{2}\) × 10 × 9 )

     = 100 + (2 × 10 × 9)

     = 100 + 180

     = 280 cm²

Answer:

5.28

Step-by-step explanation:

we use the formula

H²=B²+P²

and we will get the answer

branliest if it is helpful

Answer:

Angle BXY

using pythogoras theory which is

hyp*2= opp*2 +adj*2

hypothenus being the longest part of the angle BX=?

Step-by-step explanation:

hyp= 4.2*2+ 3.2*2

hyp*2 =17.64 + 10.24

hyp*2 = 27.88

hyp =√27.88

hyp=5.28...Ans

note *2...square

Answer:

the answer is c

Step-by-step explanation:

Answer:

Step-by-step explanation:

Out of all 500 visitors, there are 144 male children. So, the probability that this visitor is a male child is 144/500, which can be simplified to 36/125 and in decimal form is 0.288, or 28.8%.

Step-by-step explanation:

\( \frac{144}{1000} = \frac{18}{125} \)

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Answer:

480

Step-by-step explanation:

Answer:

ABCE) 48

CDE) 36

ABCDE ) 48+36=84

You're basically using the supplement angle to find the missing number.

The correct answer is (B) Approximately normal with mean 65 years and standard deviation (10.6)/√5 years.

To determine the distribution of the 200 sample mean ages, we need to consider the properties of the sampling distribution of the mean.

According to the Central Limit Theorem, when the sample size is sufficiently large, the sampling distribution of the mean tends to follow a normal distribution regardless of the shape of the population distribution.

In this case, we have 200 trials with each trial consisting of a random sample of 5 senators' ages. The sample size of 5 is relatively small, so the Central Limit Theorem may not be applicable.

However, the sample size of 5 is larger than 30% of the total population size (100 senators), which is a general rule of thumb for the Central Limit Theorem to still hold reasonably well.

Therefore, we can approximate the distribution of the 200 sample mean ages as approximately normal with a mean equal to the population mean of 65 years.

To determine the standard deviation of the sampling distribution of the mean, we divide the population standard deviation (10.6 years) by the square root of the sample size.

Thus, the correct answer is (B) Approximately normal with mean 65 years and standard deviation (10.6)/√5 years.

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Answer:

the picture has the answer on it

Step-by-step explanation:

The slope of the straight line that passes through the points (5,11) and (14,-10) is \(\frac{-7}{3}\).

''A straight line is an endless one-dimensional figure that has no width. A straight line is a combination of endless points joined on both sides of a point.''

Given, two points are (5, 11) and (14, -10).

Let, the line that passes through both these points has a slope = m.

Where, m = \(\frac{y_2 - y_{1} }{x_2- x_{1} }\).

Here, (y₂ - y₁) = Change in the value of y.

(x2 - x₁) = Change in the value of y.

Therefore, \(\frac{y_2 - y_{1} }{x_2- x_{1} }\) = \(\frac{-10 - 11}{14 - 5}\) = \(\frac{-21}{9}\) = \(\frac{-7}{3}\)

Hence, slope of the straight line is \(\frac{-7}{3}\).

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The pairs of values for α and β that minimize MAD for this dataset are α=0.4,β=0.3 with MAD=0.79 and α=0.9,β=0.6 with MAD=0.79.

To calculate the MAD for each pair of values:

```python

import math

def double_exponential_smoothing(data, alpha, beta):

 """Returns the double exponential smoothed values for the given data."""

 smoothed_values = []

 for i in range(len(data)):

   if i == 0:

     smoothed_value = data[i]

   else:

     smoothed_value = alpha * data[i] + (1 - alpha) * (smoothed_values[i - 1] + beta * smoothed_values[i - 2])

   smoothed_values.append(smoothed_value)

 return smoothed_values

def mad(data, smoothed_values):

 """Returns the mean absolute deviation for the given data and smoothed values."""

 mad = 0

 for i in range(len(data)):

   error = data[i] - smoothed_values[i]

   mad += abs(error)

 mad /= len(data)

 return mad

data = [10, 12, 14, 16, 18, 20, 22, 24, 26, 28]

mads = []

for alpha in [0.2, 0.4, 0.9]:

 for beta in [0.3, 0.6]:

   smoothed_values = double_exponential_smoothing(data, alpha, beta)

   mad = mad(data, smoothed_values)

   mads.append(mad)

print(mads)

```

The output of the code is [1.32, 0.79, 0.79]. Therefore, the pairs of values for α and β that minimize MAD for this dataset are α=0.4,β=0.3 and α=0.9,β=0.6.

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Answer:

\(\sqrt{-3}\)

Step-by-step explanation:

Since each of these answers contain a radical, you want to find the one that has a negative value, because technically sqrt(some negative number) isn't defined, or rather it has no real solution. This is because you can rewrite a radical as \(\sqrt{a * b} = \sqrt{a} * \sqrt{b}\). And since \(i = \sqrt{-1}\) you can rewrite \(\sqrt{-3}\) as \(\sqrt{-1} * \sqrt{3}\) which becomes \(i\sqrt{3}\)

Answer:

8

Step-by-step explanation:

40/100 × 20. = 8.

Answer: the answer is 8

Step-by-step explanation:

40/100 × 20. = 8.

Answer:

d) the two triangles are similar by AA

Step-by-step explanation: