A grid model with 100 squares. 20 squares are shaded.
Which fraction is equivalent to 20%?
StartFraction 1 Over 20 EndFraction
StartFraction 2 Over 20 EndFraction
StartFraction 4 Over 20 EndFraction
StartFraction 5 Over 20 EndFraction


Will give brainliest for answer!!

The unconditional mean E(Y) of the autoregressive model AR(1) is 10.5.

To compute the unconditional mean E(Y) of the autoregressive model AR(1) given by 1.05 + 0.9Y + ε, we can use the property of linearity in expectation and solve for the mean value.

The model can be rewritten as:

Y = (1.05 + ε) / (1 - 0.9)

Since ε follows a normal distribution with mean 0 and variance 0.01, we know that E(ε) = 0.

Using the linearity of expectation, we can compute the unconditional mean E(Y) as follows:

E(Y) = E((1.05 + ε) / (1 - 0.9))

= (1.05 + E(ε)) / (1 - 0.9)

= 1.05 / (1 - 0.9)

= 1.05 / 0.1

= 10.5

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The equation of the line perpendicular to y = - (1 / 2) · x - 2 and that passes through the point (x, y) = (- 3, - 5) is y = 2 · x + 1.

In this problem we must determine the equation of a line perpendicular to another line, provided that the equation of a line and a point of intersection are given. According to analytical geometry, two lines are perpendicular if and only if the product of the two slopes equals - 1.

The equations of the line are defined by functions of the form:

y = m · x + b

Where:

And the slope relationship between two perpendicular line:

m · m' = - 1

Where:

First, derive the equation of the line in slope-intercept form:

x + 2 · y = - 4

2 · y = - x - 4

y = - (1 / 2) · x - 2

Second, calculate the slope of the perpendicular line by the slope relationship:

m' = - 1 / (- 1 / 2)

m' = 2

Third, find the y-intercept of the perpendicular line by the equation of line, the slope and the coordinates of the given point:

b = y - m · x

b = - 5 - 2 · (- 3)

b = - 5 + 6

b = 1

Then, obtain the equation of the line in slope-intercept form:

y = 2 · x + 1

The equation of the line is y = 2 · x + 1.

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Answer:Because you didn't add an x value, the answer would be 0=55 if you eliminated the x.

Step-by-step explanation:

Answer:

v=-161

Step-by-step explanation:

306 + v = 145

subtract 306 from both sides

v = -161

The sample mean is X[bar]=$1500

The sample standard deviation is S=$100

The sample size is n=70

The data set has a bell shaped distribution

The empirical rule states that

The values $1400 and $1600 are within one standard deviation away from the mean:

X[bar]+S=$1500+$100=$1600

X[bar]-S=$1500-$100=$1400

Following the rule you can expect 68% of the sample to be between them.

Whats left to do is to calculate the 68% of the sample

Around 47.6 of the farms have values per acre are between $1400 and $1600

Answer:

Position = -5

Step-by-step explanation:

The number line is not shown, however the question can still be answered.

Given

Start Point: +2

Left Movement: 3.5cm and 7.9cm

Right Movement: 4.8cm

Required

Determine the Ant's position

To do this, we treat all left movements as negative and all right movements as positive.

So, we have:

Position = 2 - 3.5 - 7.9 + 4.8

Position = -4.6

Since the number line is spaced by 1cm, we have to approximate to the nearest integer.

Position = -5

      First, we can see that this is a reduction because ΔXYZ is larger than its dilation, ΔX'Y'Z'.

But by how much? We can compare two sides such as XY and X'Y' to see.

      -> I am going to compare sides XY and X'Y' because they are fully vertical lines that we can count without needing to use a distance formula.

             -> XY is 8 units long

             -> X'Y' is 4 units long

      -> 8 / 4 is a scale factor of 2

This is a reduction with a scale factor of 2.

To solve for x in: \(2x + 8 = 3x + 10\)

Collect like terms

\(→8 - 10 = 3x - 2x \\ - 2 = x\)

Therefore:

\(x = - 2\)

Answer:

If you look at the "Standard Form" column, you can take any number from an upper row and divide it by 4 to get the number in the row below it.

For example: You can take 256 and divide it by 4, and that will give you 64. Like wise, if you take 64 and divide it by 4 you will get 16.

This tells us that every time you add 4 to the equation, your answer will keep increasing 4 times.

Step-by-step explanation:

Hope that makes sense :)

If you still don't get it, please let me know.

Move all terms that don't contain x to the right side and solve.

x = 43

Answer:

x=43

Step-by-step explanation:

2x+96=182    

2x=86      (Subtract 96 from 182)

x=43         (Divide 86 by 2)

Answer:

in every question you should subtract the given value by 180

Basic fact:

angles on a straight line always add up to 180 degrees

Step-by-step explanation:

There are no dimensions that minimize the cost of the box while maintaining a volume of 20.

To find the dimensions that minimize cost, we need to consider the relationship between the volume of the box and the cost of the materials used.

Let's start by determining the dimensions of the box. We know that the box has a volume of 20. Since the box is constructed out of two different types of metal, we can divide the box into two parts: the top and bottom, which are both squares, and the sides.

Let's assume the length of each side of the top and bottom squares is x. Therefore, the area of each square is x * x = x^2.

The height of the box can be represented by h.

Since the box has a volume of 20, we can set up an equation:
x^2 * h = 20

Now, let's determine the cost of the materials used.

The metal for the top and bottom squares costs 1/ft^2, so the cost for each square is x^2 * (1/ft^2) = x^2/ft^2.
The metal for the sides costs 2/ft^2, so the cost for the sides is 4 * (x * h) * (2/ft^2) = 8xh/ft^2.
The total cost of the materials is the sum of the cost for the top and bottom squares and the cost for the sides:
Cost = (x^2/ft^2) + (8xh/ft^2)

To minimize the cost, we can differentiate the cost function with respect to x and h, and then set the derivatives equal to zero:
dCost/dx = 2x/ft^2 + 8h/ft^2 = 0  (equation 1)
dCost/dh = 8x/ft^2 = 0  (equation 2)

From equation 2, we can see that x = 0 is not a valid solution since it represents a box with zero dimensions. Therefore, x ≠ 0.

From equation 1, we can solve for h:
2x/ft^2 + 8h/ft^2 = 0
8h/ft^2 = -2x/ft^2
h = -2x/8

Since h represents the height of the box, it cannot be negative. Therefore, h ≠ -2x/8.
To find the valid values of x and h, we can substitute the value of h into the equation for the volume:
x^2 * (-2x/8) = 20

Simplifying this equation gives:
-2x^3/8 = 20
-2x^3 = 160
x^3 = -80

Since we're looking for dimensions, x cannot be negative. Therefore, there are no valid values of x and h that satisfy the equation for the volume.

In conclusion, there are no dimensions that minimize the cost of the box while maintaining a volume of 20.

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Tim drove at a distance of 511 km in 7 h. His average driving speed in km/h is 73.

By computing Tim's average driving speed, we have to divide the total distance that he traveled by the time it takes him to complete the whole journey. In this respect, Tim drove a total distance of 511 km in 7 hours.

Average driving speed = Total distance/Total time taken

By putting the values in the equation we get :

Average driving speed =\(\frac{ 511 km}{7 h}\)

Now by computing  the average driving speed:

Average driving speed = 73 km

So, Tim's average driving speed was 73 km/h.

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Answer:

the answer is 41

Step-by-step explanation:

set both equations equal to each other

then add 9 to the opposite side

next subtract 6 from the other side

divide 20 by 4 and get 5

finally plug 5 into the equation for x for angle 1

which leaves you at the end with 41

Answer:

It will take 50 minutes.

Step-by-step explanation:

Because if you are trying to get 45.5 to 15.5 you need to drain 30 gallons of water, and to do that it will take 50 minutes because 0.6*50=30.

Hope this helps!

Pls mark brainliest if it is correct

we are given the vector-valued function r(t) = <3e^(2t), 3e^(-2t), 3te^(2t)>, and we need to find T(0), r''(0), and r'(t) · r''(t).

T(0) represents the unit tangent vector of r(t) at t = 0. To find T(0), we need to calculate the derivative of r(t) with respect to t, normalize it to obtain the unit vector, and evaluate it at t = 0.

r''(0) represents the second derivative of r(t) with respect to t, evaluated at t = 0. To find r''(0), we need to calculate the second derivative of r(t) and evaluate it at t = 0.

Finally, r'(t) · r''(t) represents the dot product between the first derivative of r(t) and the second derivative of r(t) at a general value of t.

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Increased concentration is the answer as drug impairs our ability to control ourselves.

Hope it helps!

Impaired brain function as a result of drug use doesn't involve: Option D: Increased concentration.

A significant deterioration in one or more domains of conscious mental activity, such as language, learning, and memory, that interferes with everyday function and independence are some of the traits of impairment of brain.

Thus, as we see, first three options are showing acts of impaired brain but the fourth option contradicts, as impairment from drug use isn't going to increase concentration and if it somehow does, then it isn't impairment.

Thus, impaired brain function as a result of drug use doesn't involve: Option D: Increased concentration.

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Answer:

X < -6

Step-by-step explanation:

Answer:

36 degrees for each angle.

Step-by-step explanation:

If you divide 180 by 5 (for each point in the star) you get 36 degrees.

The mass of the entire archway is 585.32 grams. This is calculated by (275 x 1.2 x 0.1785) + 45 = 585.32 grams.

1. Calculate the mass of the helium in the balloons: (275 x 1.2 x 0.1785) = 49.38 grams

2. Calculate the mass of the string and fixings: 45 grams

3. Add the mass of the helium and the mass of the string and fixings: 49.38 + 45 = 585.32 grams

4. The mass of the entire archway is 585.32 grams.

The mass of the entire archway is 585.32 grams. This is calculated by (275 x 1.2 x 0.1785) + 45 = 585.32 grams.

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Answer:

The area is 45 inches

Step-by-step explanation:

L×W=A

Answer:

(351.04, 368.96)

range values of 1.96 standard deviation are 352.16 to 367.84

answer is 367

Step-by-step explanation:

The answer is scalene triangle

Answer:

scalene

Step-by-step explanation:

all the sides of a scalene triangle have different lengths, as shown in the picture :)

Answer:

9

Step-by-step explanation:

Answer:

Mia has 180 counters

Step-by-step explanation:

if Suzy has 20 counters and Mia has nine times as many as Suzy, we can multiply 20 by 9 (20×9) and get 180

Answer: 1568/3 if you're dividing

Step-by-step explanation:

Answer:

• Random sampling [ Probability and statistics method ]

Step-by-step explanation:

• This method is easier and saves time.

By probability, a person whose height is to be recorded will be chosen randomly. This will be done on approximately 40% members.

By statistical step, we'll feed results into distribution table. Then we'll find the mean height.

\({ \boxed{ \rm{mean \: height = \frac{ \sum \: f(n)}{n} }}}\)

• f of n is product of frequency and respective height bracket

• n is the number of samples.

Answer:your answer is B.) 165 in3