A rock is thrown upward with a velocity of 18 meters per second from the top of a 36 meter high cliff, and it misses the cliff on the way back down. when will the rock be 4 meters from the water, below? round your answer to two decimal places.

The value of k in the cuboid is 7 cm when the volume is 196cm³.

The space taken up by any three-dimensional solid constitutes a volume, to put it simply. They can be a cube, cuboid, cone, cylinder, or sphere.

The volumes of various shapes vary. In three-dimensional geometry, we have examined a variety of solids and shapes that are defined in three dimensions, including cubes, cuboids, cylinders, cones, etc. We are going to learn to calculate the volume for each of these shapes.

The volume of cuboid = l × b × h

Here,

4 × k × k = 196cm³

k² =  196/4

k² = 49

k = √49

k = 7

Thus, The value of k in the cuboid is 7 cm when the volume is 196cm³.

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The equation of the plane passing through the point (-8,3,7) and parallel to the given plane will be 4x + 8y - 2z = -22.

The given equation of the plane is 4x + 8y - 2z = 45.

To find the equation of the plane which passes through the point (-8,3,7) and is parallel to the given plane, we need to calculate the values of x, y and z in the given equation.

We have x = -8, y = 3 and z = 7 in the given point.

Substituting these values in the given equation, we get

4(-8) + 8(3) - 2(7) = 45

-32 + 24 - 14 = 45

-22 = 45

This is not possible.

Hence, the equation of the plane passing through the point (-8,3,7) and parallel to the given plane will be 4x + 8y - 2z = -22.

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The variable a log of all the ages in years  is best described as quantitative and continuous.

As we know the variables are classified as qualitative and quantitave.

The quantitative variables are further classified as: discrete and continuous.

A discrete variable is a variable that can only take specific numeric values but values have a clear quantitative interpretation.

This variable takes the values that are countable and have a finite number of values.

In case of  continuous quantitative variable, it can take any value in an interval.

The values of  continuous quantitative variable are not countable and they have an infinite number of possibilities.

As we know the age is a discrete variable as it is commonly expressed as an integer.

Here, a demographer they keep a log of all the ages in years.

So, variable is continuous variable.

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Each person buys a number of cakes

The term "operation" in mathematics refers to the process of computing a value utilizing operands and a math operator. For the specified operands or integers, the math operator's symbol has predetermined rules that must be followed. In mathematics, there are five basic operations: addition, subtraction, multiplication, division, and modular forms.

Given, Andy buys x cakes, Betty buys 4 times as many cakes as andy, and colin buys 3 more cakes than andy

So,

Andy has = x Cakes

Betty have = 4x Cakes

Clin has = x +3 Cakes

Since each cake costs 65p and the total cost of the cakes is £52.65

thus,

0.65( x + 4x + x +3) = 52.62

x + 4x + x +3 = 81

6x = 78

x = 13

Therefore,

Andy has = 13 cakes

Betty has = 4x = 4*13 = 52 cakes

Colin has = x + 3 = 16 cakes

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Answer:

  11

Step-by-step explanation:

You have an average of 7 on 3 tests, and you want to know the score required of the 4th test to make the average be 8.

The average is the sum, divided by the number.

If you have an average of 7 on the first 3 tests, the sum of those scores is ...

  average = sum/number

  7 = sum/3

  21 = sum

If you want an average of 8 on 4 tests, the sum of the scores must be ...

  8 = sum/4

 32 = sum

In order to increase the sum of scores from 21 to 32, you must have a score of ...

  32 -21 = 11

You need to score 11 on the 4th test to bring the average to an 8.

__

Alternate solution

The difference between the scores you have and the average you want is ... 3(7 -8) = -3.

In order to bring your average up to 8, you need to have a total of 3 more points than that average on your 4th test: 8 + 3 = 11. (This brings the total of differences from average to zero: (-1) +(-1) +(-1) +(3) = 0.)

Your 4th test must have a score of 11 to bring your average on 4 tests up to 8.

The type of sampling used in this example is a. random sampling

One of the most straightforward methods for gathering information from the entire population is random sampling. Every member of the subset has an equal chance of being chosen as part of the sampling process when using random sampling. For instance, if an organization employs 300 people overall, a sample group of 30 workers will be chosen to participate in the survey. In this instance, the population is the entire workforce of the organization, and the sample is 30 employees. Since all of the employees who were picked to participate in the survey were chosen at random, every worker has an equal chance of getting chosen.

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Answer:

----------------------------------

We know that the equation for the time is:

Find the time at travel in the first day:

Find the time at travel in the second day:

To find the total time add app the two expressions we got above:

There matching choice is C.

Answer:

Below

Step-by-step explanation:

Squares have equal side lengths

area = side X side

      = 2.4 m  X  2.4 M = 5.76 m^2

The expression \root(4)(10mn) and (10mn)^((1)/(4)) are equivalent

Index forms are described as that number written in the form of an exponential expression.

It is also described as a single number raised to another number.

The exponent of an exponential expression explains how many times to multiply the base by itself to simply the expression.

Standard forms and scientific notation are other names for index forms.

It is important to note that the fourth root of a number or variable is  the biquadratic root.

From the information given, we have that;

[tex]\sqrt[4]{10mn}[/tex]

[tex](10mn)^1^/^4[/tex]

Note the following;

√2 = 2^1/2

∛2 = 2^1/3

Hence, the expressions are equivalent

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Premise 3: 901,223 is not divisible by 6.

Valid argument form used: Modus Tollens.

Step 1: Divide 901,223 by 6.

901,223 ÷ 6 = 150,203.83333

Step 2: Round down the answer.

150,203.83333 rounded down = 150,203

Step 3: Check if the answer is divisible by 3.

150,203 ÷ 3 = 50,067.3333

Step 4: Round down the answer again.

50,067.3333 rounded down = 50,067

Step 5: Check if the answer is divisible by 3.

50,067 ÷ 3 = 16,689

Step 6: Round down the answer again.

16,689 rounded down = 16,689

Step 7: Check if the answer is divisible by 3.

16,689 ÷ 3 = 5,563

Step 8: Round down the answer again.

5,563 rounded down = 5,563

Step 9: Check if the answer is divisible by 3.

5,563 ÷ 3 = 1,854.3333

Step 10: Round down the answer again.

1,854.3333 rounded down = 1,854

Step 11: Check if the answer is divisible by 3.

1,854 ÷ 3 = 618

Step 12: Check if the answer is divisible by 3.

618 ÷ 3 = 206

Step 13: Check if the answer is divisible by 3.

206 ÷ 3 = 68.66666666

Step 14: Round down the answer again.

68.66666666 rounded down = 68

Step 15: Check if the answer is divisible by 3.

68 ÷ 3 = 22.66666666

Step 16: Round down the answer again.

22.66666666 rounded down = 22

Step 17: Check if the answer is divisible by 3.

22 ÷ 3 = 7.333333

Step 18: Round down the answer again.

7.333333 rounded down = 7

Step 19: Check if the answer is divisible by 3.

7 ÷ 3 = 2.333333

Step 20: Round down the answer again.

2.333333 rounded down = 2

Step 21: Check if the answer is divisible by 3.

2 ÷ 3 = 0.666666

Conclusion: 901,223 is not divisible by 6

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The slope of the line of the equation y - 12 = 3/4(x + 7), is: 3/4.

The point-slope form of a linear equation is given as y - y1 = m(x - x1), where m is the slope of the line, (x1, y1) is a point on the line, and y and x are the variables.

To identify the slope of a line in point-slope form, you can simply look at the coefficient of x, which is the value of m. In the equation y - y1 = m(x - x1), m is the slope of the line.

This value tells you the rate of change or steepness of the line. A positive slope value implies that the line is increasing and a negative value implies that the line is decreasing.

Given the equation of a line in point-slope form as y - 12 = 3/4(x + 7). Therefore, the slope (m) can be identified as 3/4.

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The mistake of Elena is that the powers of the terms were not the same and the correct result is 3.83 ×10^6.

We have to note that the addition of the exponents is not just like the addition of the ordinary numbers that we know. The operation of the addition of the exponents would require an extra care to ensure that the powers of the two terms to be added is exactly the same.

In the work of Elena; (2.3×10^5)+(3.6×10^6)=5.9×10^6. This is wrong because the powers of the terms on the right hand side are not the same. As such the correct approach would be;

0.23 × 10^6 + 3.6×10^6 = 3.83 ×10^6

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Answer:

see below

Step-by-step explanation:

1. study hard and go to a good college and then find a good job.

2. be intelligent on spending and save money to invest in the financial markets

3. buy a few life insurance policies with living benefits.

4. find a niche on social media and create contents to attract followers, and then invest the earnings in stock market or bond market.

5. invest in real estate

6. start a small business and then grow into franchise.

The region enclosed by the curve y=3x-x2 and the line y=2x can be rotated about the y-axis to determine the volume of the solid of revolution. The cylindrical shell method can be used to determine this volume.

The cylindrical shell method can be used to determine the volume of the solid of revolution created by rotating the area enclosed by the curve y=3x-x2 and the line y=2x about the y-axis.

We must first determine the region's boundaries.

At x=2 and y=4, y=2x.

When y=3x-x2, x=0, and y=0.

As a result, the region's boundaries are x=0 to x=2 and y=0 to y=4.

The following formula determines the solid's volume:

Volume equals b a 2 y r2 d y

where x is a constant and r is the cylindrical shell's radius.

As a result, the solid of revolution's volume is given by:

Volume = 4.002y x 2.2dy

= 2π ∫4 0 (3x2-x3)dx

= 2π [x3-x4/4]

4 0

= 2π (16/4)

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The volume of the pyramid is, 72 cm³.

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

We have to given that;

Height of pyramid = 12 cm

Base of pyramid = 12 cm

Weight of pyramid = 14 cm

Now, We know that;

⇒ Volume of pyramid = 1/2 × Base × Height

Substitute all the values, we get;

⇒ Volume of pyramid = 1/2 × 12 × 12

⇒ Volume of pyramid = 6 × 12

⇒ Volume of pyramid = 72 cm³

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Their mom squeezed 8 lemons and Elvis and Costello bought 36 lemons.

The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.

Let's represent the number of lemons Elvis squeezed "E", the number of lemons Costello squeezed "C", and the number of lemons their mom squeezed "M".

We know that:

E + C + M = 36 (because they bought 36 lemons in total)

E = (1/3) x 36 = 12 (because Elvis squeezed 1/3 of the lemons)

C = (4/9) x 36 = 16 (because Costello squeezed 4/9 of the lemons)

We can use the first equation to find the value of M:

M = 36 - E - C

Substituting in the values we know:

M = 36 - 12 - 16

M = 8

So their mom squeezed 8 lemons.

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The probability that she will make a basket on or before her last attempt within her average waiting time are 1/8 and 2/8

Probability of an event is a measurement of how likely an event can occur as an outcome of a random experiment;

Probability ranges from 0 to 1, both inclusive. Events whose probability is closer to 0 are rarer to occur than those whose probabilities are closer to 1 (relatively);

When converted to percentage, we just need to multiply its decimal representation by 100. In percentage form, the probability ranges from 0% to 100%;

Given:

Hannah makes 5 out of 8 attempted free-throws.

Now,

The average waiting time of hannah to make her first basket is 5/8

The probability of hannah making basket at her last attempt is 1/8

The probability of hannah making basket before her last attempt is 2/8

Hence, the probabilty will be 1/8 and 2/8;

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Answer:

  all are True

Step-by-step explanation:

You want to know if the end behavior is properly described for the polynomial functions shown in the table.

A function of odd degree with a positive leading coefficient has a graph that has a generally positive slope (/).

When the leading coefficient is negative, the slope is generally negative (\). In this case, the sign of the end behavior is opposite the sign of x.

  x → -∞, -2x³ → ∞ . . . . . True

A function of even degree with a positive leading coefficient has a graph that generally opens upward (U). The sign of the end behavior will match the sign of the leading coefficient.

  x → ∞, 2x⁴ → ∞ . . . . . True

This function is of odd degree with a negative leading coefficient. The sign of the end behavior is opposite the sign of x.

  x → ∞, -9x⁵ → -∞ . . . . . True

All the Limit statement are True

If the polynomial functions indicated in the table's final behavior are appropriately explained, you wish to know.

-2x³ at -∞

The graph of an odd-degree function with a positive leading coefficient has a generally upward slope (/).

The slope is often negative when the leading coefficient is negative. The sign of the end behavior is thus the opposite of the sign of x.

x -, -2x3 -∞ are True

2x⁴ at ∞

The graph of an even degree function with a positive leading coefficient typically opens upward (U). The final behavior's sign will coincide with the leading coefficient's.

x, 2x4 ∞ are True

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Donald's work seems to be inaccurate. He substitutes u = x3 in the first step, however he does not correctly adjust the bounds of integration. He divides by x in the subsequent phase, which results in a division by zero at x = 0.

Additionally, it appears like Donald made a mistake while integrating sin(u)du in the final step. It should have been -cos(u) + C rather than x*cos(u) + C. One could try an alternative approach or use a calculator or computer to assess the integral to verify the work. Another option would be to look up the right answer in a book or internet resources.

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Answer:

  a. D1AF

  b. 1F

  c. 1

  d. EDB2

Step-by-step explanation:

You want these unsigned binary numbers converted to hexadecimal.

  a. 1101 0001 1010 1111

  b. 0001 1111

  c. 0001

  d. 1110 1101 1011 0010

Each group of 4 bits can take on any of 16 different values. Conveniently, each of those corresponds to a hexadecimal digit, as shown in the attachment.

To do the conversion, we replace each group of 4 bits by its hexadecimal equivalent.

  a. D1AF

  b. 1F

  c. 1

  d. EDB2

__

Additional comment

A couple of the given numbers are one or more bits short of a group of 4 bits. You may want to check your actual problem statement to see if the numbers here are the same. The attached table applies in any event.

Answer: 3.4c - 1

Step-by-step explanation:

multiply each part within the parentheses by the negative sign

so -3.4c x -1 = 3.4c

and 1 x -1 = -1

add those two together and we get 3.4c - 1

The estimate of the integral by parts ∫₀³f(x)g'(x) = 62.1

Integration is the process of reverse differentiation. It is the process of finding the anti-derivative of a function.

Since we have the integral  [tex]\int\limits^3_0 {f(x)g'(x)} \, dx[/tex] and f(x) = x³. To evaluate the integral within the limits, we use integration by parts.

So, for any integral by parts

 [tex]\int\limits^a_b {u(x)v'(x)} \, dx = [u(x)v(x)]^{a} _{b} - \int\limits^a_b {v(x)u'(x)} \, dx[/tex]

So, for the given integral   [tex]\int\limits^3_0 {f(x)g'(x)} \, dx[/tex], we have that

 [tex]\int\limits^3_0 {f(x)g'(x)} \, dx = [f(x)g(x)]^{3} _{0} - \int\limits^3_0 {g(x)f'(x)} \, dx[/tex]

So, we have that

 [tex]\int\limits^3_0 {f(x)g'(x)} \, dx = [f(x)g(x)]^{3} _{0} - \int\limits^3_0 {g(x)f'(x)} \, dx\\= [f(x)g(x) - f(0)g(0)] - [{g(3)f'(3) - g(0)f'(0)}][/tex]

Now, we have that f(x) = x³. So,f'(x) = 3x².

So,

Also, form the table

Substituting these into the equation, we have that  

[tex]\int\limits^3_0 {f(x)g'(x)} \, dx = [f(3)g(3) - f(0)g(0)] - [{g(3)f'(3) - g(0)f'(0)}]\\= [27 \times 4.9 - 0 \times 2.3] - [{4.9 \times 27 - 2.3\times 27}]\\= (132.3 - 0) - (132.3 - 62.1)\\= 132.3 - 132.3 + 62.1\\= 0 + 62.1\\= 62.1[/tex]

So, integral [tex]\int\limits^3_0 {f(x)g'(x)} \, dx = 62.1[/tex]

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42% of people are likely to see a movie today, or probability of 0.42.

A probability is a number that expresses the possibility or likelihood that a specific event will take place. Probabilities can be stated as proportions with a range of 0 to 1, or as percentages with a range of 0% to 100%.

By dividing the number of preferable possibilities by the total number of potential outcomes, probability, which measures the likelihood that an event will occur, is obtained. A coin flip is the most basic illustration. There are only two outcomes that can occur when you flip a coin: either heads or tails.

Probability is a measure of the likelihood that an event will occur or the likelihood that something will happen.

The likelihood that a movie is being viewed right now is:

0.5 of 0.6(if it rains today) (if it rains today).

0.3 of 1 - 0.6 = 0.4(if it does not rain today) (if it does not rain today).

therefore adding them:

p =0.5 (0.6) +0.3(0.4)

 =0.3 +0.12 = 0.42

42% of people are likely to see a movie today, or 0.42.

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The Maclaurin series is xln(2x + 1) - x^2 + (2x^3)/3 - (2x^4)/4 + ... and the arc is (-1/2, 1/2).

From the question, we have the following parameters that can be used in our computation:

f(x) = x ln(2x+1)

The Maclaurin series of f(x) = x ln(2x + 1) can be found by using the power series expansion of the logarithm function and the definition of a derivative.

Starting with the power series expansion of ln(1 + x):

ln(1 + x) = x - (x^2)/2 + (x^3)/3 - (x^4)/4 + ...

We can then substitute x = 2x + 1 - 1 to obtain the power series expansion of ln(2x + 1):

ln(2x + 1) = (2x + 1 - 1) - (2x + 1 - 1)^2/2 + (2x + 1 - 1)^3/3 - (2x + 1 - 1)^4/4 + ...

= 2x - x^2 + (2x^3)/3 - (2x^4)/4 + ...

Next, we use the definition of a derivative to find the Maclaurin series of f(x) = x ln(2x + 1):

f'(x) = d/dx (x ln(2x + 1)) = ln(2x + 1) + x * d/dx ln(2x + 1)

= ln(2x + 1) + x * (2 - 2x + 2x^2 - 2x^3 + ...)

= ln(2x + 1) + 2x - 2x^2 + 2x^3 - 2x^4 + ...

Therefore, the Maclaurin series of f(x) = x ln(2x + 1) is:

f(x) = ∫ f'(x) dx = ∫ (ln(2x + 1) + 2x - 2x^2 + 2x^3 - 2x^4 + ...) dx

= xln(2x + 1) - x^2 + (2x^3)/3 - (2x^4)/4 + ...

The arc of a Maclaurin series refers to the range of values for x for which the series converges to the actual value of the function.

For the Maclaurin series above, the range of convergence depends on the function ln(2x + 1) which has a singularity at x = -1/2.

This implies that the Maclaurin series converges for all x such that |x| < 1/2.

Rewrite as

(-1/2, 1/2)

So, the arc of the series is (-1/2, 1/2).

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Answer:

Step-by-step explanation:

I DONT UNDERSTAND

The value of the sigma notation is 55924050

From the question, we have the following parameters that can be used in our computation:

sigma1^12 10×4^n-1

Express properly

So, we have the following representation

[tex]\sum^{12}_{1} 10*4^{n-1[/tex]

The sum of the geometric series can be calculated using the formula:

S = a(1 - r^n)/(1 - r)

From the sigma notation, we have the following parameters

a = 10,

r = 4

n = 12.

Substituting these values, we get:

S = 10 * (1 - (4)^12) / (1 - 4)

Evaluate the expression

S = 55924050

Hence, the sum is 55924050

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The unknow angle in the isosceles triangle is as follows:

m∠C = 80 degrees.

An isosceles triangle is a triangle that has two of its sides equal to each other and also have two if its angles equal to each other.

The base angles of the isosceles triangles are equal and the legs of the triangle are equal.

Therefore, in ΔABC

AB = BC

Hence,

m∠A ≅ m∠C

The angle A and angle C are the base angles. This makes them congruent to each other.

Therefore,

m∠C = 80 degrees

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Answer: x=-13, y=-23

Step-by-step explanation:

y in terms of x

-2x+y=3

y=3+2x

Substitute in other equation:

5x-4(3+2x)=27

5x-12-8x=27

-3x=39

x=39/-3

x=-13

Solve for y, substitute for x:

-2(-13)+y=3

26+y=3

y=-23

Yes, Mabel is correct. She correctly followed all the steps and arrived at the correct answer.

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