The domain (input value) of the cosine function is what

Answers

Answer 1

Step-by-step explanation:

( - ∞, + ∞ )      x  can have any value....there are no x values where x is undefined .


Related Questions

a rectangular playing field with a perimeter of 100 meters is to have an area of at least 500 square meters. within what bonds must the length be?

Answers

The bounds for the length of the rectangular playing field are 5.9 meters ≤ length ≤ 44.1 meters. This answer is more than 100 words.

To solve this problem, we first need to know the formula for the perimeter of a rectangular field, which is 2(length + width). Since the perimeter of the field is given as 100 meters, we can write the equation as 2(length + width) = 100.
We also know that the area of a rectangular field is given by the formula length x width. We are given that the field must have an area of at least 500 square meters, so we can write the inequality length x width ≥ 500.
Now we need to find the bounds for the length. We can use the equation for the perimeter to solve for the width in terms of the length: width = (100 - 2length)/2. Substituting this expression for width into the inequality for the area, we get length x (100 - 2length)/2 ≥ 500.
Multiplying both sides by 2 and simplifying, we get length(100 - 2length) ≥ 1000. Expanding the left side, we get 100length - 2length^2 ≥ 1000. Rearranging and factoring, we get -2(length^2 - 50length + 500) ≥ 0.
Dividing both sides by -2 and flipping the inequality, we get length^2 - 50length + 500 ≤ 0. This quadratic inequality can be solved by finding the roots of the quadratic equation length^2 - 50length + 500 = 0. The roots are approximately 5.9 and 44.1.
Since the length of a field cannot be negative, the lower bound for the length is 5.9 meters. To satisfy the inequality for the area, the upper bound for the length is 44.1 meters. Therefore, the length of the rectangular playing field must be between 5.9 and 44.1 meters to have a perimeter of 100 meters and an area of at least 500 square meters.
In summary, the bounds for the length of the rectangular playing field are 5.9 meters ≤ length ≤ 44.1 meters.

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Find the area of the triangle below to the nearest
tenth.
56°
78°
7.2 cm

Answers

Answer is 15.8
Have a nice day

We know that 74.94 * 1000= because the number 10 with a 3 exponent has_____zeros when it is written without an exponent.

Answers

The original equation  provided (74.94 * 1000), we can see that multiplying 74.94 by 1,000 is equivalent to adding three zeros to the end of the number. Now let's consider the number 10 with a 3 exponent, which we know is equal to 1,000.  So, the answer to the equation is simply 74,940.

we need to understand the concept of exponents and how they relate to the number of zeros in a number. An exponent is a way of showing how many times a number should be multiplied by itself. For example, 10 raised to the power of 3 (written as 10^3) means 10 multiplied by itself three times, which is equal to 1,000.
Now let's consider the number 10 with a 3 exponent, which we know is equal to 1,000. When this number is written without an exponent, we can simply write it as 1 followed by three zeros, which is 1,000. Therefore, the answer to your question is that the number 10 with a 3 exponent has three zeros when it is written without an exponent.
When you multiply 74.94 by 1000, you are essentially moving the decimal point three places to the right because the number 10 with a 3 exponent (10^3) has three zeros when it is written without an exponent.
1. Identify the number to be multiplied (74.94) and the exponent of 10 (3).
2. Convert 10^3 to its standard form, which gives us 1000 (three zeros).
3. Move the decimal point of the number (74.94) three places to the right due to the three zeros in 1000.
So, 74.94 * 1000 = 74940.

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The original equation  provided (74.94 * 1000), we can see that multiplying 74.94 by 1,000 is equivalent to adding three zeros to the end of the number. Now let's consider the number 10 with a 3 exponent, which we know is equal to 1,000.  So, the answer to the equation is simply 74,940.

The concept of exponents and how they relate to the number of zeros in a number. An exponent is a way of showing how many times a number should be multiplied by itself. For example, 10 raised to the power of 3 (written as 10^3) means 10 multiplied by itself three times, which is equal to 1,000.

Now let's consider the number 10 with a 3 exponent, which we know is equal to 1,000. When this number is written without an exponent, we can simply write it as 1 followed by three zeros, which is 1,000. Therefore, the answer to your question is that the number 10 with a 3 exponent has three zeros when it is written without an exponent.

When you multiply 74.94 by 1000, you are essentially moving the decimal point three places to the right because the number 10 with a 3 exponent (10^3) has three zeros when it is written without an exponent.

1. Identify the number to be multiplied (74.94) and the exponent of 10 (3).

2. Convert 10^3 to its standard form, which gives us 1000 (three zeros).

3. Move the decimal point of the number (74.94) three places to the right due to the three zeros in 1000.

So, 74.94 * 1000 = 74940.

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how many meters are there in 21 feet

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Answer:

approximately 6.4 meters

After the president of the United States is sworn into office, the Presidential Inaugural Parade travels a straight path west from the U. S. Capitol (B) to the White House (A) down Pennsylvania Avenue. How is this path defined?

Answers

The path of the Presidential Inaugural Parade is defined as a straight line that runs west from the U.S. Capitol Building, located at the eastern end of the National Mall in Washington D.C., to the White House, located just a few blocks to the north.

The parade typically follows Pennsylvania Avenue, which is the main ceremonial route used for many official processions in the nation's capital. The path is lined with grandstands for spectators and is closed to vehicle traffic during the parade. The parade route is flanked by some of Washington D.C.'s most important landmarks, including the National Archives Building, the Department of Justice, the Old Post Office Pavilion, and the Trump International Hotel. The Presidential Inaugural Parade has been a tradition in the United States for over 200 years and  is a key part of the Inauguration Day ceremonies, which mark the peaceful transfer of power from one presidential administration to the next.

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Write down the next two terms for each sequence below. how you continued the pattern (the term-to-term rule): b) 1; 2; 4; 7; II; ... -3; 0; 3; 6;..​

Answers

The next terms of the sequences 1; 2; 4; 7; 11; ... and -3; 0; 3; 6; ... are 16, 22 and 9, 12.

The given sequence is: 1; 2; 4; 7; 11; ...

To get the next term, we need to observe the differences between consecutive terms:

2-1 = 1; 4-2 = 2; 7-4 = 3; 11-7 = 4

The differences are increasing by 1 in each step. So, to get the next term, we add 5 to the last term:

11 + 5 = 16

Similarly, to get the term after that, we add 6 to the previous term:

16 + 6 = 22

Therefore, the next two terms of the sequence are 16 and 22, and the term-to-term rule is to add consecutive integers starting from 1 to the previous term.

The given sequence is: -3; 0; 3; 6; ...

To get the next term, we add 3 to the previous term:

6 + 3 = 9

Similarly, to get the term after that, we add 3 to the previous term:

9 + 3 = 12

Therefore, the next two terms of the sequence are 9 and 12, and the term-to-term rule is to add 3 to the previous term.

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Serious Vespa scooter accidents (involving hospitalization) in Redondo Beach California necessarily follow a Poisson distribution with an average of 9 per summer break (June, July, and August). Use the central limit theorem (C.L.T.) to approximate the probability that there will be 11 or more serious Vespa scooter accidents in Redondo Beach this summer break. (Hint: Remember to use the correct continuity correction.) 0.7486 0.6915 0.3085 None of these. 0.2514

Answers

The approximate probability of having 11 or more serious Vespa scooter accidents in Redondo Beach this summer break is approximately 0.3085.

To approximate the probability of having 11 or more serious Vespa scooter accidents in Redondo Beach during the summer break, we can use the Central Limit Theorem (CLT). The CLT states that the sum or average of a large number of independent and identically distributed random variables will be approximately normally distributed, regardless of the underlying distribution.

In this case, we can consider the number of serious Vespa scooter accidents as a random variable following a Poisson distribution with an average of 9 accidents during the summer break. The Poisson distribution can be approximated by a normal distribution when the average is sufficiently large.

To apply the CLT, we need to calculate the mean and standard deviation of the Poisson distribution:

Mean (μ) = average = 9

Standard Deviation (σ) = square root of average = √9 = 3

Now, we want to find the probability of having 11 or more accidents. We can use the normal approximation by considering the continuity correction. Since the Poisson distribution is discrete, we adjust the boundaries by subtracting 0.5:

P(X ≥ 11) ≈ P(X > 10.5)

Now, we standardize the value using the Z-score formula:

Z = (X - μ) / σ

Z = (10.5 - 9) / 3 ≈ 0.5

Next, we find the probability of Z being greater than 0.5 using a standard normal distribution table or calculator:

P(Z > 0.5) ≈ 0.3085

Therefore, the approximate probability of having 11 or more serious Vespa scooter accidents in Redondo Beach this summer break is approximately 0.3085.

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you roll a fair 666-sided is p(roll an even number)p(roll an even number)start text, p, (, r, o, l, l, space, a, n, space, e, v, e, n, space, n, u, m, b, e, r, end text, )?if necessary, round your answer to 222 decimal places.

Answers

The probability of rolling an even number on a fair 666-sided die is 1/2. Therefore, the probability of rolling an even number twice in a row is (1/2) * (1/2) = 1/4. Rounded to 222 decimal places, the answer is 0.25.


To calculate the probability of rolling an even number with a fair 666-sided die, follow these steps:

1. Identify the total number of outcomes: There are 666 sides on the die, so there are 666 possible outcomes.
2. Identify the number of favorable outcomes: Half of the numbers on the die will be even (2, 4, 6, ...). Therefore, there are 333 even numbers.
3. Calculate the probability: Divide the number of favorable outcomes (even numbers) by the total number of outcomes (all possible rolls).

Probability = (number of even numbers) / (total number of possible rolls) = 333 / 666 = 0.5

So, the probability of rolling an even number on a fair 666-sided die is 0.5 or 50%. There's no need to round the answer to 222 decimal places as the probability is already exact.

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Here’s the picture i’m not sure what to do if someone could help me that would be awesome

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The true statement from the graph is this: D. The girls have a higher interquartile range but a lower mean than the boys.

What is the true statement?

The interquartile range of the girls' resting heart rate spans from 80 to 88 while the interquartile range of the boys spans from 84 to 90. So, the interquartile range for the girls is higher than that of the boys. Also, the mean of the girls is lower than that of the boys.

The mean of the girls is the sum of the rates divided by 8 = 11/8 = 1.375

The mean for the boys is the sum of the rates divided by 6 = 11/6 = 1.833

Som the mean of the girls is lower than that of the boys.

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help me with this 2 I need help please

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The slope of the line on the graph is positive

The slope of the equation is -1/2

The slope of the equation is 3/2

Interpreting the slope of the line

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

The graph

From the graph, we can see that

As the x values increases, the y values increases

And vice versa

This means that the slope of the line is positive

Calculating the slopes of the lines

Here, we have

x + 2y = 6

Rewrite as

2y = -x + 6

So, we have

y = -x/2 + 3

The slope of the line is the coeffient of x

So, we have

Slope = -1/2

Also, we have

y = 3/2x + 3

The slope of the line is the coeffient of x

So, we have

Slope = 3/2

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As an estimation we are told £3 is €4.

Convert €90.50 to pounds.

Give your answer rounded to 2 DP.

Answers

Answer: £67.875

Step-by-step explanation:

€90.50 x 3/4 = £67.875

The diameter of the circle is 27 ft what is the area of the circle rounded to the nearest hundreth?

Answers

The diameter of the circle is 27 ft, which means the radius is half of the diameter, so it is 27/2 = 13.5 ft.

The formula for the area of a circle is A = πr², where π is approximately 3.14 and r is the radius.

Substituting the values we have, we get:

A = π(13.5)²
A ≈ 3.14 x 182.25
A ≈ 572.22

Rounding to the nearest hundredth, the area of the circle is approximately 572.22 square feet.

A particle moves along the curve defined by the equation y = x^3 â 3x. The x-coordinate of the particle, x(t), satisfies the equation dx/dt = 1/Vt+1, for t > 3 with the initial condition x(3) = -1. . Vt+1 (A) Find x(t) in terms of t. (B) Find dy/dt in terms of t. (C) Find the location and speed of the particle at time t = 8.

Answers

(A) x(t) = ln(t+1) + C, where C is a constant.

(B) dy/dt = 3x^2 - 3.

(C) At t = 8, the particle is located at x = ln(9) - 1 and has a speed of |3(3ln(9) - 3)^2 - 3|.

(A) To find x(t) in terms of t, we integrate dx/dt with respect to t. Integrating 1/(t+1) gives us ln(t+1) + C, where C is a constant. Since x(3) = -1, we can substitute t = 3 and x = -1 into the equation to solve for C. We get -1 = ln(3+1) + C, which gives us C = -1 - ln(4). Therefore, x(t) = ln(t+1) - ln(4) - 1.

(B) To find dy/dt in terms of t, we differentiate y = x^3 - 3x with respect to t using the chain rule. We have dy/dt = (dy/dx) * (dx/dt) = (3x^2 - 3) * (dx/dt). Substituting dx/dt = 1/(t+1), we get dy/dt = (3x^2 - 3)/(t+1).

(C) At t = 8, we can substitute t = 8 into x(t) to find the x-coordinate of the particle. We have x(8) = ln(8+1) - ln(4) - 1 = ln(9) - ln(4) - 1. To find the y-coordinate, we substitute this value of x into y = x^3 - 3x, giving us y(8) = (ln(9) - ln(4) - 1)^3 - 3(ln(9) - ln(4) - 1). To find the speed, we substitute x = ln(9) - ln(4) - 1 into dy/dt = (3x^2 - 3)/(t+1) and take the absolute value.

Therefore, at t = 8, the particle is located at the point (ln(9) - ln(4) - 1, (ln(9) - ln(4) - 1)^3 - 3(ln(9) - ln(4) - 1)), and its speed is given by |3((ln(9) - ln(4) - 1)^2 - 1)/(8+1)|.

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Y is 60km away from X on a bearing of 135 degree. Z 80 km away from x on a bearing of 225 degree. find the: distance of z from y and bearing of z from y​

Answers

hope this helps you to understand the question the method is to draw the information given into a diagram so that you can allow your brain to think abut the steps.

do ask if you are still in doubt.

The distance of Z from Y is approximately 140 km, and the bearing of Z from Y is 315 degrees.

Let's find the distance of Z from Y first. We can use the law of cosines, which states that in any triangle, the square of one side is equal to the sum of the squares of the other two sides minus twice the product of these two sides and the cosine of the included angle.

Let:

Distance XY be denoted as a (given as 60 km).

Distance XZ be denoted as b (given as 80 km).

The angle YXZ be denoted as C (since angle Y and angle Z form a straight line, C = 180°).

Now, the distance of Z from Y (ZY) can be calculated as follows:

ZY² = XY² + XZ² - 2 * XY * XZ * cos(C)

ZY² = 60² + 80² - 2 * 60 * 80 * cos(180°)

ZY² = 3600 + 6400 + 9600

ZY² = 19600

ZY = √19600

ZY ≈ 140 km

Now, to find the bearing of Z from Y, we can use the concept of bearings, which are angles measured clockwise from the north direction to the line joining two points. We know the bearing of Y from X is 135°, so the bearing of Z from Y can be calculated as follows:

Bearing of Z from Y = (Bearing of Y from X + Angle ZYX) mod 360°

Bearing of Z from Y = (135° + 180°) mod 360°

Bearing of Z from Y = 315° mod 360°

Bearing of Z from Y = 315°

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Find the length of the major arc . DEF

Give an exact answer in terms of , and be sure to include the correct unit in your answer.

Answers

The length of the major arc for the given circle, in terms of pi, is:

L = π*2.16 yards.

How to find the length of the major arc?

We know that an arc defined by an angle x on a circle of radius R has a length:

L = (x/360°)*2*π*R

where π = 3.14

Here we know that the angle DCE is 100°, and the total angle of a circle is 360°, then the angle of the arc DFE is 360° - 100° = 260°

And the radius of the circle is R = 3yd, then the length in terms of pi is:

L = (260°/360)*2*π*3yd

L = π*2.16 yards.

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In a population of 1,500 students that was wrongly recorded as 900, find the percentage error. ​

Answers

The Percentage error is 40%. This means that the recorded value is 40% lower than the true value. In other words, the recorded value is only 60% of the true value.

To find the percentage error, we need to calculate the difference between the recorded value and the true value, then divide that difference by the true value and multiply by 100 to get a percentage.

True value = 1,500

Recorded value = 900

Difference = True value - Recorded value

Difference = 1,500 - 900

Difference = 600

Percentage error = (Difference / True value) x 100

Percentage error = (600 / 1,500) x 100

Percentage error = 40

Therefore, the percentage error is 40%. This means that the recorded value is 40% lower than the true value. In other words, the recorded value is only 60% of the true value.

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PLEASE HELP ME I AM REALLY STRUGGLING

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The answer is (x + 1)^2 + 2.

This is a concept I always found very confusing when first learning quadratics, so don’t worry about the struggle.

To explain the reasoning, we should look at the clues we’re given by the table. Since we know we’re looking at a quadratic function, we know that we’re going to have a point that either serves as a min or a max, where the values will go from increasing to decreasing or vise versa. I’m this example, we see the values go from 6, to 3, to 2 (decreasing) and then to 3, and 6 and so on (increasing). This means our minimum is located at h(x) = 2, x = -1 for this function.

Because our minimum is on at x = 0, which is where it would be normally, we can assume there is a value affecting the expression being squared. To find the value, we need to set x to our current minimum, which is -1(x = -1). In order to figure out how our value is being affected, we want to set the left side with our x to equal zero. To do this we would add 1 to both sides (x + 1) = (-1 + 1) which would give us (x + 1) = 0. We now know the value that is being squared in the function, (x + 1)^2.

To find the value added outside of the squared expression, we simply look at h(x) at our minimum location. In this case h(-1) = 2. Normally a quadratic function will have its minimum value be 0, so the outside of the squared expression is being added by 2, giving us (x + 1)^2 + 2.

I’m sorry if this isn’t explained very well. I was trying to write it in a way I thought would be easier to understand, but I’m not sure if it will come across that way. If you need further explanation, please let me know.

what is the image of point p(-2 3 5) after a reflection about the xy-plane

Answers

When a point is reflected about the xy-plane, its z-coordinate is negated while its x and y-coordinates remain the same. the image of the point P(-2, 3, 5) after a reflection about the xy-plane is the point P'(-2, 3, -5).

what is coordinates ?

Coordinates are values used to indicate the position of a point in a coordinate system. A coordinate system is a system that uses one or more numbers, called coordinates, to determine the position of a point or object. For example, in a two-dimensional Cartesian coordinate system, a point is located by its distance from two perpendicular lines, the x-axis and the y-axis, which intersect at a point called the origin. The coordinates of a point are usually represented by an ordered pair (x, y) in this system. In a three-dimensional coordinate system, a point is located by its distance from three perpendicular planes, and its coordinates are usually represented by an ordered triple (x, y, z).

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Solve the inequality:
[tex]x^2 - 3x - 4 \ \textless \ = 4[/tex]

Answers

Answer:

[tex]\Large \textsf{$\boxed{\boxed{-1.702\leq x\leq4.702}}$}[/tex]

Step-by-step explanation:

The inequality required to solve:

[tex]\Large \textsf{$\Rightarrow$\ } \boxed{\Large \textsf{$x^2-3x-4\leq 4$}}[/tex]

[tex]\large \textsf{First, subtract 4 from both sides:}\\ \\\large \textsf{$\Rightarrow x^2-3x-8\leq 0$}\\\\\large \textsf{This is in the form of a quadratic equation, where $ax^2+bx+c=0$}\\\large \textsf{We need to consider the LHS as an equation, and solve for $x$:}\\\\\large \textsf{Using the quadratic formula:}\\\\\large \textsf{$\boxed{x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}}$} \large \textsf{ , where $ax^2+bx+c=0$}\\\\[/tex]

[tex]\large \textsf{$x=\frac{-(-3)\pm\sqrt{(-3)^2-4(1)(-4)}}{2(1)}$}\\\\\large \textsf{$\therefore x=-1.702, 4.702$}[/tex]

Now, this is not the solution of the inequality yet. These are the x-intercepts (roots) of the graph of y = x² - 3x - 8. From the graph, we can apply the inequality sign, and solve for values below or equal to y = 0.

[see attached diagram of graph]

[tex]\large \textsf{From the graph, we can conclude that:}\\\\\Large \textsf{$\boxed{\boxed{-1.702\leq x\leq4.702}}$}[/tex]

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Which of the following sets of data provides the clearest difference between the two samples?
a) One sample has M = 20 with s2 = 5 and the other has M = 30 with s2 = 5.
b) One sample has M = 20 with s2 = 5 and the other has M = 25 with s2 = 5.
c) One sample has M = 20 with s2 = 10 and the other has M = 30 with s2 = 10.
d) One sample has M = 20 with s2 = 10 and the other has M = 25 with s2 = 10.

Answers

The set of data that provides the clearest difference between the two samples is option (c): One sample has M = 20 with s2 = 10 and the other has M = 30 with s2 = 10. The reason is that the standard deviation is higher in both samples compared to the other options, and the means of the two samples are also relatively far apart, making the difference between the two samples clearer. I

n options (a) and (b), the means are not far enough apart to provide a clear difference, and in option (d), while the means are farther apart than in option (b), the standard deviation is the same, which makes the difference less clear.

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2, 5; 7, 11 WHAT IS THE GENERAL RULE OF THIS SEQUENCE ?​

Answers

There is no general rule for the sequence as this is neither an arithmetic sequence nor a quadratic sequence.

How to find the general rule ?

If this is an arithmetic sequence, then there would be a constant difference between the consecutive terms.

Difference between term 2 and term 1 : 5 - 2 = 3

Difference between term 3 and term 2 : 7 - 5 = 2

Difference between term 4 and term 3 : 11 - 7 = 4

This is therefore not an arithmetic sequence.

We can check to see if it is quadratic with the second difference :

Difference between the second and first differences: 2 - 3 = -1

Difference between the third and second differences: 4 - 2 = 2

These are still not constant which means that there is no general rule given the terms.

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On Saturday, an ice cream shop sold 60 vanilla cones, 80 chocolate cones, and 40 strawberry cones. What is the ratio of vanilla cones to chocolate cones?​

Answers

The required ratio of vanilla cones to chocolate cones is 3:4.

To find the ratio of vanilla cones to chocolate cones, we need to divide the number of vanilla cones by the number of chocolate cones:

The ratio of vanilla cones to chocolate cones = Number of vanilla cones / Number of chocolate cones

The ratio of vanilla cones to chocolate cones = 60 / 80

Simplifying the fraction, we get:

The ratio of vanilla cones to chocolate cones = 3/4

Therefore, the ratio of vanilla cones to chocolate cones is 3:4.

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what is the height of a rectangular prism that has a length of 4 cm , width of 5 cm and a volume of 120 cm^3

Answers

Answer:

6 cm

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

Use the formula:

V = lwh, where V - volume, l - length, w - width, and h - height.

Plugging in the given values, solve for h:

120 = 4 * 5 * h 120 = 20h h = 6

The height of the prism is 6 cm.

When you graph a graph a quadratic function, its shape is called a ____
A. triangle
B. square
C. parabola
D. line
E. circle

Answers

When you graph a quadratic function, its shape is called a parabola.

Option C is the correct answer.

We have,

A parabola is a curve that is formed when graphing a quadratic function.

It is a U-shaped curve that can open upwards or downwards, depending on the coefficients of the quadratic equation.

A quadratic function is a polynomial function of degree 2, which can be expressed in the form y = ax² + bx + c, where a, b, and c are constants and x represents the variable.

The coefficient a determines whether the parabola opens upwards or downwards.

If coefficient a is positive, the parabola opens upwards, and if coefficient a is negative, the parabola opens downwards.

The vertex of the parabola is the highest or lowest point on the curve, depending on the orientation.

Thus,

A parabola is a specific shape that is formed when graphing a quadratic function, characterized by its U-shape.

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There are 5 red marbles and 3 blue marbles in a jar. What is the probability you selected a blue marble, do not replace it, and then select another blue marble?

Answers

Answer:

3/28

Step-by-step explanation:

5 + 3 = marbles in total.

P(first blue) = 3/8

P(second blue) = (3-1) / (8-1)  = 2/7

P(selecting 2 blue) = (3/8) X (2/7) = 6/56 = 3/28

Of the 400 freshmen at Westview High School, 92 students are in band, 60 students are in chorus, and 20 students are in both band and chorus. If a student is chosen at random, Find each probability as a fraction (in simplest form), decimal, and percent.

question .1 student in chorus and in band
question 2 student (not in band | in chorus)
question 3 student (in band | not in chorus)

Answers

1-P(Band and Chorus) = 20/400 = 1/20 = 0.05 = 5%
2-P(Not in Band | In Chorus) = 40/60 = 2/3 = 0.6667 = 66.67%
3-P(In Band | Not in Chorus) = 72/340 = 18/85 ≈ 0.2118 ≈ 21.18%

Find scale factor of the dilation.

Answers

Answer:

Scale factor is 2

Step-by-step explanation:

Not sure how to explain, just count the number of points the dilated figure is from the point of dillations compared to the original figure. 2/1=2.

The regular cost of a music system is $80 999 . During a sale it was sold for $69,999 . Calculate the rate of discount ​

Answers

The rate of discount on the music system during the sale is 13.58%.

The rate of discount is the percentage reduction in the original price of a product during a sale.

The regular cost of the music system is $80,999 and it was sold during the sale for $69,999.

The rate of discount, we first need to find the amount of discount.

We can do this by subtracting the sale price from the regular price:

Discount = Regular price - Sale price

Discount = $80,999 - $69,999

Discount = $11,000

So the discount on the music system during the sale is $11,000.

Next, we can calculate the rate of discount as a percentage of the regular price.

We can use the formula:

Discount rate = (Discount / Regular price) x 100%

Plugging in the values we have:

Discount rate = ($11,000 / $80,999) x 100%

Discount rate = 0.1358 x 100%

Discount rate = 13.58%

The music system was discounted by 13.58% during the sale, resulting in a sale price of $69,999.

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Suppose a normal distribution has a mean of 50 and a standard deviation of
5. What is the probability that a data value is between 48 and 52? Round your
answer to the nearest tenth of a percent.
A. 30.5%
B. 31.1%
C. 26.2%
OD. 28.8%

Answers

The probability that a data value is between 48 and 52 is 31.1 %

Given data ,

To find the probability that a data value is between 48 and 52 in a normal distribution with a mean of 50 and a standard deviation of 5, we can use the Z-score and the standard normal distribution.

First, we need to standardize the values of 48 and 52 by calculating their respective Z-scores.

Z-score formula: Z = (X - μ) / σ

X is the data value,

μ is the mean, and

σ is the standard deviation.

For 48:

Z1 = (48 - 50) / 5 = -0.4

For 52:

Z2 = (52 - 50) / 5 = 0.4

The probability of a Z-score between -0.4 and 0.4 can be found by subtracting the cumulative probability associated with -0.4 from the cumulative probability associated with 0.4.

Using a standard normal distribution table or calculator, we find that the cumulative probability for Z = -0.4 is approximately 0.3446, and the cumulative probability for Z = 0.4 is approximately 0.6554.

Hence , the probability of a data value being between 48 and 52 given by

P(48 ≤ X ≤ 52) ≈ 0.6554 - 0.3446 ≈ 0.3108 or 31.1%

Hence , the probability is 31.1 %

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the interest is component is annually​

Answers

The equation P (1 + r/100)n, wherein P = the principal, r = yearly rate of interest, and n = the number of years and time periods, yields the amount of money when interest is made worse annually.

Compound interest refers to the interest added to a loan or deposit. It is the concept that we use every day the most regularly. For an amount, compound interest is computed using either the principal and accrued interest. This is the primary distinction among compound and simple interest. The formula P (1 + r/100)n, where P = principal, r = yearly rate of interest, and n = the number of years or time periods, yields the amount if interest is compounded annually.

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