Please I need help with that, I am desperate. Brainliest for someone who gets it right

Answer: 2021

Step-by-step explanation:

Answer:

18ft

Step-by-step explanation:

if the car moves 2 ft per second, and you are trying to find how many feet the car traveled in 9 seconds. so you would have to do 2x9 to get your answer of 18. hope this helps!

Answer:

it is d

Step-by-step explanation:

Answer: Down Below ↓

Step-by-step explanation: Here's an easy tip for measuring the angles of triangles. Every triangle has a sum (total) of 180 degrees. Take the two angles that are already shown, add them together, then subtract them from 180.

I cannot read the numbers on the paper, so I hope this answer somewhat helps.

Edit: Oh my lord, it's a coloring page too? I remember those, they suck. :')

Answer:

W = 50°

w+ z+ 42°= 180° ( sum of interior angle of triangle is 180°)

w+ 88°+ 42°= 180°

w= 180°-130°

w= 50°

X=130°

w+x = 180° (linear pair)

50°+x= 180°

x=180°-50°

x= 130°

Y=42°

A= y (Alternate interior angle)

42°= y

Z=88°

Z= C (alternate interior angle)

Z= 88°

The elementary matrix E = [1 0 0; 0 1 0; 5/3 -2 1] such that EC = A.

To find an elementary matrix E such that EC = A, we need to perform row operations on the matrix C such that it becomes A.

We can achieve this by performing the following row operations on C:

R3 ← R3 + R1

R1 ← R1/3

R2 ← R2 - 3R1

R3 ← R3 + 5R2

The resulting matrix after these row operations is:

1 0 0

0 1 0

5/3 -2 1

Therefore, the elementary matrix E that corresponds to these row operations is:

1 0 0

0 1 0

5/3 -2 1

We can verify that EC = A by multiplying EC:

[0 3 -5 0 1 2-1 2 0 0 0 0-1 2 0 0 0 0] x [0 3 -5 0 1 2                      

0 1 2 0 0 0                      -1 2 0 0 0 0]

= [0 3 -5 1 -1 2   -1 2 0 0 0 0   0 3 -5 0 1 2]

= A

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Answer:

c

Step-by-step explanation:

The correct option is (A) -2. To find the final coordinates of the point obtained by reflecting (8, 8) over the line x = 3, we need to find the reflection of the point (8, 8) with respect to the line x = 3.

Since the line x = 3 is a vertical line, the reflection of a point (x, y) over the line x = 3 will have the same y-coordinate but a new x-coordinate obtained by reflecting the original x-coordinate across the line.

The distance between the point (8, 8) and the line x = 3 is 8 - 3 = 5 units. To reflect the point (8, 8) over the line x = 3, we need to move 5 units in the opposite direction, resulting in an x-coordinate of 3 - 5 = -2. Therefore, the reflection of (8, 8) over the line x = 3 is (-2, 8).

Now, we need to reflect the point (-2, 8) over the line y = 4. The line y = 4 is a horizontal line, so the reflection of a point (x, y) over the line y = 4 will have the same x-coordinate but a new y-coordinate obtained by reflecting the original y-coordinate across the line.

The distance between the point (-2, 8) and the line y = 4 is 8 - 4 = 4 units. To reflect the point (-2, 8) over the line y = 4, we need to move 4 units in the opposite direction, resulting in a y-coordinate of 4 - 4 = 0. Therefore, the final reflection of (8, 8) over both lines is (-2, 0).

The sum of the coordinates of the final point (-2, 0) is -2 + 0 = -2.

Therefore, the correct option is (A) -2.

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Answer:

6:9:5

Step-by-step explanation:

every 30ml of orange juice

need 45ml of apple juice

&25ml of coconut milk

so 30:45:25

divide all by 5

6:9:5

The equation of the  given model is y = 13.16x + 251.05

First choose two point

The first point = (44, 830)

The second point = (63, 1080)

The slope of the line m = \(\frac{y_2-y_1}{x_2-x_1}\)

Substitute the values in the equation

The  slope of the line = (1080-830) / (63 - 44)

= 250 / 19

Consider the point (44, 830)

The point slope form is

\(y-y_1=m(x-x_1)\)

Where m is the slope of the line

y - 830 = 250/19(x - 44)

y - 830 = (250/19)x - 11000/19

y = (250/19)x - 11000/19 + 830

y = 250/19 x + 4770/19

y = 13.16x + 251.05

Hence, the equation of the  given model is y = 13.16x + 251.05

The complete question is

The table shows the fat content and calories for the burgers at a fast food chain.

Fat (g) 25 44 63 32 37 20 11 52

Calories 590 830 1080 680 750 420 310 820

Write the best fit line that models the impact of fat content on calories. Explain how you got your answer.

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As n approaches infinity, -72n^2 also approaches infinity. The natural logarithm of infinity is also infinity. Therefore, the limit of the sequence diverges: lim(n→∞) c_n = ∞ Your answer: DIV

To determine the limit or divergence of the sequence c_n = ln(4n - 7)/(6n + 4), we can use the limit laws and theorems of calculus.

First, we can simplify the expression inside the natural logarithm by factoring out 4n from the numerator and denominator:

c_n = ln(4n(1 - 7/(4n)))/(2(3n + 2))
c_n = ln(4n) + ln(1 - 7/(4n)) - ln(2) - ln(3n + 2)

Next, we can use the fact that ln(x) is a continuous function to take the limit inside the natural logarithm:

lim n→∞ ln(4n) = ln(lim n→∞ 4n) = ln(infinity) = infinity

lim n→∞ ln(2) = ln(2)

Using the theorem that the limit of a sum is the sum of the limits, we can add the last two terms together and simplify:

lim n→∞ c_n = infinity - ln(2) - lim n→∞ ln(3n + 2)/(6n + 4)

Finally, we can use L'Hopital's Rule to evaluate the limit of the natural logarithm fraction:

lim n→∞ ln(3n + 2)/(6n + 4) = lim n→∞ (1/(3n + 2))/(6/(6n + 4))
= lim n→∞ (2/(18n + 12)) = 0

Therefore, the limit of c_n as n approaches infinity is:

lim n→∞ c_n = infinity - ln(2) - 0 = infinity

Since the limit of the sequence is infinity, the sequence diverges. Therefore, the answer is DIV.
Let's determine the limit of the sequence or show that it diverges using the appropriate Limit Laws or theorems.

Given sequence: c_n = ln(4n - 76n + 4)

We need to find: lim(n→∞) c_n

Step 1: Rewrite the sequence
c_n = ln(4n - 76n + 4)

Step 2: Factor out the highest power of n in the argument of the natural logarithm
c_n = ln(n^2 (4/n - 76 + 4/n^2))

Step 3: Calculate the limits of each term in the parentheses as n→∞
lim(n→∞) 4/n = 0
lim(n→∞) 4/n^2 = 0

Step 4: Replace the terms with their limits
c_n = ln(n^2 (4 - 76 + 0))

Step 5: Simplify the expression
c_n = ln(-72n^2)

As n approaches infinity, -72n^2 also approaches infinity. The natural logarithm of infinity is also infinity. Therefore, the limit of the sequence diverges:

lim(n→∞) c_n = ∞

Your answer: DIV

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The limit of the sequence cn as n approaches infinity is ln(2/3).

We can use the limit laws to determine the limit of the sequence cn = ln(4n -7)/(6n + 4) as n approaches infinity.

First, we can simplify the expression inside the natural logarithm by dividing both the numerator and denominator by n:

cn = ln((4n/n) - (7/n))/((6n/n) + (4/n))

cn = ln(4 - 7/n)/(6 + 4/n)

As n approaches infinity, both 7/n and 4/n approach zero, so we have:

cn = ln(4 - 0)/(6 + 0)

cn = ln(4/6)

cn = ln(2/3)

Therefore, the limit of the sequence cn as n approaches infinity is ln(2/3).

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Answer:

5.5 feet

Step-by-step explanation:

Multiply the length by width.

3.5 x 1.2 = 4.2

Now divide 23.1 by 4.2

You get 5.5

Writing the fraction 7/11 as a decimal gives a repeating decimal 0.636363 the sum of the first two digits is 90

The fraction 7/11 is written in fraction to give a repeating deicmal

Where decimal with repeats. Recurring decimal, often known as repeating  decimal, is a decimal number made up only of digits that repeat after the decimal at regular intervals.

The division inform of fraction when converted to decimal gives

0.636363

the sum of the first 20 decimals is 90

this is 6 ten times and 3 ten times

6 * 10 + 3 * 10

60 + 30

90

the sum is 20

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To minimize the cost, the builder should but 200 meters of fence costs at $2 per meter and 800 meters of fence costs at $1 per meter. The minimum cost is $1,200.

Recall that if we have a function f(x), then at the extremum point, its derivative is equal to zero.

f ' (x) = 0

In the given problem, let:

p = length of the rectangle

q = width of the rectangle

Then,

p x q = 60,000 or q = 60,000/p

Assume that the front side is p, then the function that describe the cost is:

f(p,q) = 2xp + 1 x (p + q + q)

f(p,q) = 3p + 2q

f(p) = 3p + 2 x 60,000/p

f(p) = 3p + 120,000/p

Take the derivative:

f '(p) = 3 - 120,000/p² = 0

p² = 40,000

p = 200 meters

Substitute p = 200 to get q,

q = 60,000/200 = 300

Hence, the type of fences the builder have to buy to minimize the cost is:

200 meters fence with cost $2 per meter and 200+300+300= 800 meters fence with cost $1 per meter.

The minimum cost is:

f(p) = 3p + 120,000/p

f(min) = f(200) = 3x200 + 120,000/200 = $1,200

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The first paragraph discusses the calculation of dot products between vectors u, v, and w, finding unit vectors for u and w, and solving for vectors a, b, and c that form different angles with vector w.

In the first part of the paragraph, the dot products u · v and u · w are calculated. The dot product of two vectors is found by multiplying corresponding components and then summing them. For u · v, the calculation would involve multiplying the corresponding components of vector u = [√√²3] ₁ ² and vector v = [³]. Similarly, u · w is calculated by multiplying the corresponding components of u and w = [³].

Next, u · (v + w) is calculated by adding vectors v and w and then finding the dot product with vector u.

To find the unit vectors for u and w, the vectors are divided by their respective magnitudes. The magnitude of a vector can be found by taking the square root of the sum of squares of its components.

In the second part of the paragraph, the vector w = 131 is given. Vectors a, b, and c are to be determined, which form angles of 0°, 90°, and 180° with vector w. Additionally, given that v + w = and v - w = [3], vectors v and w are computed. The calculations involve scaling vector v by certain factors and performing addition and subtraction operations to obtain the desired results. Finally, the computed vectors v and w are plotted on the xy plane.

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Answer:

Assuming f(x) = 3x^2 - 3x + 1, f(-2) is 16.

Step-by-step explanation:

Check answer.

PLZ MARK AS BRAINLIEST IF THIS HELPED YOU!

Step-by-step explanation:

first find the nth term

a1 (n-1) d

24 (n-1) 7

24+7n-7= 17+7n

for 500th term: 17+7(500)= 3517

so option B

hope it helps! please mark me brainliest..

thank you!! have a good day

The equation of the tangent line to the curve `y = 2ex cos(x)` at the point (0,2) is given by `y = 2ex + 2`.

To find an equation of the tangent line to the curve at the given point (0,2) whose equation is given by `y = 2ex cos(x)`, we need to determine the derivative `y'` of `y = 2ex cos(x)` first. Using the product rule, we have;

`y = 2ex cos(x)`...let `u = 2ex` and `v = cos(x)`, then `u' = 2ex` and `v' = -sin(x)`.`y' = u'v + uv'` `= 2ex cos(x) - 2ex sin(x)` `= 2ex(cos(x) - sin(x))`

Therefore, the derivative of `y = 2ex cos(x)` is `y' = 2ex(cos(x) - sin(x))`.

The equation of the tangent line to the curve at the point (0,2) is obtained by using the point-slope formula, which is given by: `y - y1 = m(x - x1)`where `(x1,y1)` is the point of tangency, `m` is the slope of the tangent line.

Substituting the values of `m`, `x1` and `y1`, we obtain: `m = y' |(0,2)` `= 2e(1 - 0)` `= 2e`Using the point-slope formula with `(x1,y1) = (0,2)` and `m = 2e`, we have: `y - 2 = 2e(x - 0)` `y - 2 = 2ex` `y = 2ex + 2`

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The payout at the end can be either positive or negative. The output should be: -2.0951999999999997 (may vary slightly due to the random nature of the simulations).

Sure! Here's an implementation of the `dual _stock_ gamble` function in Python that calculates the average profit based on the given inputs:

```python

import numpy as np

def dual_stock_gamble(current_price, difference_threshold, num_simulations, num_days, price_percent_change, prob_up=0.5, random_seed=13579):

   np.random.seed(random_seed)

   total_profit = 0

   for _ in range(num_simulations):

       stock1_prices = [current_price]

       stock2_prices = [current_price + 1]  # Adding 1 to simulate the second stock

       # Generate stock prices for each day

       for _ in range(num_days):

           price_change1 = np.random.choice([1 + price_percent_change, 1 - price_percent_change], p=[prob_up, 1 - prob_up])

           price_change2 = np.random.choice([1 + price_percent_change, 1 - price_percent_change], p=[prob_up, 1 - prob_up])

           stock1_prices.append(stock1_prices[-1] * price_change1)

           stock2_prices.append(stock2_prices[-1] * price_change2)

       max_difference = max([abs(p1 - p2) for p1, p2 in zip(stock1_prices, stock2_prices)])

       if max_difference > difference_threshold:

           profit = max_difference

       else:

           profit = -max_difference

       total_profit += profit

   average_profit = total_profit / num_simulations

   return average_profit

```

You can call the function with your example input:

```python

result = dual_stock_gamble(current_price=90, difference_threshold=12, num_simulations=5, num_days=3, price_percent_change=0.03, prob_up=0.5, random_seed=13579)

print(result)

```

The output should be: -2.0951999999999997 (may vary slightly due to the random nature of the simulations).

Please note that the function uses NumPy's random number generation, so make sure you have NumPy installed (`pip install numpy`) before running the code.

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Answer:

Step-by-step explanation:

Let x be the number

I hope this helps!

Answer:

13

Step-by-step explanation:

12 + 13 = 25

10+10=20

20+3+2=25

The number of trees on the road if the road is 6.3 km and the trees are spaced 3 m apart is 2100 trees.

1 kilometer = 1000 meters

6.3 kilometer= 6,3000 meters

Total length of the road = 6.3 kilometer = 6,3000 meters

spaced intervals = 3 meters

The number of trees on the road = Total length of the road / spaced intervals

= 6,300 / 3

= 2100 trees

Hence, 2100 trees are planted on the road.

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It would take 5040 cubic inches of water to completely fill the aquarium.

We know that the formula for the volume of cuboid :

V = length × width × height

Let us assume that l represents the length of the aquarium, w represent the width and h represents the height.

Here, l = 20 inches

w = 14 inches

and h = 18 inches

Using the formula for the volume of cuboid, the volume of aquarium would be,

V = l × w × h

V = 20 × 14 × 18

V = 5040 cu.in.

Therefore, it would take 5040 cu.in. of water.

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The series ∑ e^n / n^2, where n starts from 1 and goes to infinity, diverges. This means that the series does not have a finite sum and keeps growing indefinitely.

To determine the convergence or divergence of the series ∑ e^n / n^2, we can use various tests. One commonly used test is the comparison test.

When we compare the given series to a known series, such as the harmonic series or geometric series, we can see that the terms of the given series do not decrease or approach zero as n increases. In fact, the exponential term e^n grows exponentially, and the denominator n^2 increases at a much slower rate.

As a result, the terms of the series do not tend to zero, and we can conclude that the series diverges. In other words, the sum of the series goes to infinity as n approaches infinity. This indicates that the series does not have a finite sum and keeps growing indefinitely.

Therefore, the series ∑ e^n / n^2 diverges.

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Answer:

-8

Step-by-step explanation:

The orange will fall 64 feet in 8 seconds.

Distance:

Distance is defined as how much ground an object has covered despite its starting or ending point.

Given,

The distance a falling object travels towards the earth is directly proportional to the square of the time that it falls.

And an orange falls 16 feet in 4 seconds.

Here we need to find the how far it will fall in 8 seconds.

Based on the given details,

We know the that distance is,

D = kt²  

where

k is the constant of proportionality.  

To find the value of k we have to apply the given values on the equation.

=> 16 = k x (4)²

=> 16 = k x 16

=> k = 16/16

=> k = 1.

So, in 8 seconds it will fall at

=> D = 1 x (8)²

=> D = 1 x 64

=> D = 64 feet.

Therefore, the orange will fall at 64 feet in 8 seconds.

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The Equation of a Straigth Line has the form:

where m is the slope and b the intersection with the vertical axis (y-axis).

As we can see based on the graph, b = 0, and m can be calculated as follows:

To use the latter, we have to choose two points from the graph. For example, assuming that each square from the graph represents one unit:

• (0,0)

• (-2,1)

Replacing these coordinates:

Answer:

Logarithms are a useful tool in determining the acidity or basicity of a solution. pH is a measure of the concentration of hydrogen ions in a solution and is calculated using the formula pH = -log[H+].

A solution with a pH of 7 is considered neutral, while a pH below 7 indicates acidity and a pH above 7 indicates basicity.

Using logarithms, we can determine the pH of 7 solutions ranging from strong acid to neutral to strong base. To do this, we need to measure the concentration of hydrogen ions in each solution and then use the formula above to calculate the pH.

For example, if we have a solution with a hydrogen ion concentration of 0.001 M, we can calculate the pH as follows:

pH = -log(0.001) = 3

This solution would be considered a strong acid, as it has a pH below 7. Similarly, a solution with a hydrogen ion concentration of 10^-7 M (which is the same as a concentration of 1x10^-7 M) would have a pH of 7 and would be considered neutral.

Finally, a solution with a hydrogen ion concentration of 10^-11 M would have a pH of 11 and would be considered a strong base.

In summary, using logarithms, we can determine the acidity or basicity of a solution by calculating its pH. A pH of 7 is considered neutral, while a pH below 7 indicates acidity and a pH above 7 indicates basicity.

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4 and 1/2 ft taller is the giraffe at the end of month 11 than at the end of month 2.

The function h(m) = (1/2)*m + (6 + 1/2) represents the height (on feet) of the giraffe as a function of the number of months, m.

We want to find the difference in the height between month 11 and month 2, then we need to find:

difference = h(11) - h(2)

We can directly calculate this:

difference = [ (1/2)*11 + (6 + 1/2)] - [(1/2)*2 + (6 + 1/2)]

difference = (1/2)*11 - (1/2)*2 = (1/2)*(11 - 2) = (1/2)*(9) = 9/2

And we can write 9 = 9 + 1, then:

difference=9/2 = (8 + 1)/2 = 8/2 + 1/2

difference= 4 + 1/2

Therefore, the giraffe is (4 and 1/2) ft taller in month 11 than in month 2.

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The probability that sample is greater than 418 will be is 6.533.

Probability is the occurence of likely events. It is the area of mathematics that deals with numerical estimates of the likelihood that an event will occur or that a statement is true.

Here we have

\(\mu=397.64,n=40,\sigma=20\)

According to central limit theorem, the sampling distribution of mean will be normal with mean

\(\mu_{\bar{x}}=\mu=397.64\)

and standard deviation

\(\sigma_{\bar{x}}=\frac{\sigma}{\sqrt{n}}=\frac{20}{\sqrt{40}}=3.1623\)

The z-score for\(\bar{x}=418\) is

\(z=\frac{\bar{x}-\mu_{\bar{x}}}{\sigma_{\bar{x}}}=\frac{418-397.34}{3.1623}=6.533\)

Therefore, the probability that sample is greater than 418 will be

\(P(\bar{x} > 418)=P(z > 6.533)\)

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Incomplete Question

Carbon dioxide (CO2) is one of the primary gases contributing to the greenhouse effect and global warming. The mean amount of CO2 in the atmosphere for March 2013 was 397.34 parts per million (ppm). Suppose 40 atmospheric samples are selected at random in May 2013 and the standard deviation for CO2 in the atmosphere is σ = 20 ppm. (1 pt.)

c) Suppose the sample mean CO2 level is 400. Is there any evidence to suggest that the population mean CO2 level has increased?

Answer:  here is the answer

The equation of the line that has a slope of -1 and a y-intercept of -6 is:

y=-1x-6.

Step-by-step explanation:  here is the explanation

You want to find the equation for a line that has a slope of -1 and a y-intercept of -6.

First of all, remember what the equation of a line is:

y = mx+b

Where:

m is the slope, and

b is the y-intercept

All you really have to do here is

replace m with -1, which is the slope you gave, and

replace b with -6, the y-intercept you gave,

in the equation y=mx+b.

The equation of the line that has a slope of -1 and a y-intercept of -6 is:

y=-1x-6.