using known taylor series find the first 4 nonzero terms of thetaylor series for the function f(t)=e^(t)cos(t) about 0

We can estimate that about 9 grams of water vapor per kg of air would have to condense out to maintain saturation and a relative humidity of 100%.

When air is saturated, it holds the maximum amount of water vapor it can at a given temperature and pressure. Any decrease in temperature leads to the condensation of water vapor out of the air, which can lead to the formation of dew or frost.

To maintain a relative humidity of 100%, the air must remain saturated. So, if the temperature of the room continues to decrease for one more hour, some of the water vapor in the air will condense out to maintain saturation. The amount of water vapor that condenses out depends on the initial temperature, the final temperature, and the amount of water vapor in the air.

To calculate the amount of water vapor that condenses out, we can use the concept of dew point temperature. The dew point temperature is the temperature at which the air becomes saturated and condensation begins to occur. If the temperature of the room reaches the dew point temperature, the air will be fully saturated, and any further decrease in temperature will lead to the condensation of water vapor.

Assuming that the initial temperature of the room was above the dew point temperature, we can estimate the amount of water vapor that would condense out after one hour of cooling by calculating the difference between the initial temperature and the dew point temperature, and then using a psychrometric chart or an online calculator to determine the corresponding amount of water vapor that would have to condense out.

For example, if the initial temperature of the room was 25°C and the dew point temperature was 20°C, and the room cooled to 19°C after one hour, then we can estimate that about 9 grams of water vapor per kg of air would have to condense out to maintain saturation and a relative humidity of 100%. However, this is just an estimate, and the actual amount of water vapor that condenses out depends on many factors, including the humidity and air circulation in the room.

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The equation of the tangent line y = 20x + 61, with m = 20 and b = 61.

To find the equation of the tangent line to the function [tex]f(x) = x^3 - 2x^2 + 5 at x = -2[/tex], we need to first find the slope of the tangent line at that point.

To do this, we can take the derivative of the function f(x), which gives us:

[tex]f'(x) = 3x^2 - 4x[/tex]

Then, we can plug in x = -2 to find the slope at that point:

[tex]f'(-2) = 3(-2)^2 - 4(-2) = 20[/tex]

So the slope of the tangent line at x = -2 is 20.

Now we can use the point-slope form of a line to find the equation of the tangent line. We know that the line passes through the point [tex](-2, f(-2))[/tex], which is (-2, 21) since:

[tex]f(-2) = (-2)^3 - 2(-2)^2 + 5 = 21[/tex]

So the equation of the tangent line is:

[tex]y - 21 = 20(x + 2)[/tex]

Simplifying this equation gives us:

y = 20x + 61

Therefore, the equation of the tangent line in the form y = mx + b is:

y = 20x + 61, with m = 20 and b = 61.

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In perfect square form, the discriminant is either 0 or positive, since we took the square root of a positive number. Therefore, if a quadratic equation is in perfect square form, it either has one repeated solution or two distinct solutions.

To rewrite a quadratic equation in perfect square form, we use a process called completing the square.
Move the constant term (the number without a variable) to the right side of the equation.

Divide both sides by the coefficient of the squared term (the number in front of x^2) to make the coefficient 1.

Take half of the coefficient of the x term (the number in front of x) and square it. This will be the number we add to both sides of the equation to complete the square.
Add this number to both sides of the equation.
Rewrite the left side of the equation as a squared binomial.
Solve the equation by taking the square root of both sides.
Here are two examples to demonstrate this process:
1. Rewrite the equation [tex]2x^2 + 12x + 7 = 0[/tex] in perfect square form.
Move the constant term to the right side:
[tex]2x^2 + 12x = -7[/tex]
Divide by the coefficient of the squared term:
[tex]x^2 + 6x = -7/2[/tex]
Take half of the coefficient of x and square it:
[tex](6/2)^2 = 9[/tex]
Step 4: Add 9 to both sides:
[tex]x^2 + 6x + 9 = 2.5[/tex]
Rewrite the left side as a squared binomial:
[tex](x + 3)^2 = 2.5[/tex]
Solve by taking the square root:
x + 3 = +/- sqrt(2.5)
x = -3 +/- sqrt(2.5)
Since we get two distinct solutions, the quadratic equation has two solutions.
Rewrite the equation[tex]x^2 - 8x + 16 = 0[/tex] in perfect square form.
Move the constant term to the right side:
[tex]x^2 - 8x = -16[/tex]
Divide by the coefficient of the squared term:
[tex]x^2 - 8x + 16 = -16 + 16[/tex]
Step 3: Take half of the coefficient of x and square it:
[tex](8/2)^2 = 16[/tex]
Add 16 to both sides:
[tex]x^2 - 8x + 16 = 0[/tex]
Rewrite the left side as a squared binomial:
[tex](x - 4)^2 = 0[/tex]
Solve by taking the square root:
x - 4 = 0
x = 4
Since we get one repeated solution, the quadratic equation has only one solution.
Once a quadratic equation is written in perfect square form, we can quickly determine how many solutions it has by looking at the discriminant, which is the expression under the square root in the quadratic formula:
[tex](-b +/- \sqrt{(b^2 - 4ac)) / 2a }[/tex]
If the discriminant is positive, the quadratic equation has two distinct solutions.

If the discriminant is zero, the quadratic equation has one repeated solution.

If the discriminant is negative, the quadratic equation has no real solutions (but it may have complex solutions).

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If Sam needs 2/5 pound turkey to make one sandwich, then to make 7 sandwiches, he will need:

(2/5) x 7 = (2 x 7)/5 = 14/5 = 2.8 pounds of turkey

Therefore, Sam needs 2.8 pounds of turkey to make 7 sandwiches.

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Solution:-

Here,

let, P=$1000

Money vested in IBM= x

Interest=(x×1×5)/100

              =5x/100

Money invested in Macintosh=1000-x

Interest=((1000-x)1×8)/100

              =(8000-8x)/100

Now,

Total Interest=5x/100 + (8000-8x)/100

or, 60.80=(5x+8000-8x)/100

or, 60.80×100=-3x+8000

or, 6080-8000=-3x

or, -1920/-3=x

x=$640

1000-x=1000-640

             =360 

Thus, Colton invested $640 in IBM, and $360 in Macintosh.

The firm should produce 3.5 units to maximize profit, but the maximum profit is -$300, indicating the firm is operating at a loss.

To find the units of production that maximize profit, we need to first find the profit function by subtracting the cost function from the revenue function:

Profit = Revenue - Cost = R - C = 1400x - (700 + 1200x) = 200x - 700

Now, to find the units of production that maximize profit, we need to find the value of x that maximizes the profit function. We can do this by taking the derivative of the profit function with respect to x and setting it equal to zero:

d(Profit)/dx = 200 - 0 = 0

Solving for x, we get:

x = 3.5

Therefore, the firm should produce 3.5 units to maximize its profit.

To find the maximum profit, we can substitute the value of x back into the profit function:

Profit = 200x - 700 = 200(3.5) - 700 = -300

So the maximum profit is -$300, which means the firm is operating at a loss. This suggests that the firm should re-evaluate its production costs and revenue strategies to try and reduce costs or increase revenue in order to achieve a positive profit.

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To solve this problem, we will need to use the equation of motion for a damped harmonic oscillator: mx'' + bx' + k*x = 0 . The position of mass after t seconds : [tex]x(t) = 4*e^(-3t/4)cos(tsqrt(55)/4)[/tex]

b is the damping constant, k is the spring constant, and x' and x'' are the first and second derivatives of x with respect to time, respectively.

We can start by finding the spring constant k using the given information Next, we can find the initial displacement, Oscillation and velocity of the mass: x(0) = 4 m x'(0) = 0 m/s

Now we can substitute these values and the values for m, b, and k into the equation of motion and solve for [tex]x: 8x'' + 18x' + 4*x = 0[/tex], The general solution to this equation is: [tex]x(t) = Ae^(-3t/4)cos(tsqrt(55)/4) + Be^(-3t/4)sin(tsqrt(55)/4)[/tex] where A and B are constants that depend on the initial conditions.

We can solve for these constants using the initial displacement and velocity: [tex]x(0) = A = 4 m x'(0) = -3sqrt(55)/4B = 0 B = 0[/tex]

Therefore, position of mass after t seconds: [tex]x(t) = 4*e^(-3t/4)cos(tsqrt(55)/4)[/tex]

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To make it to the second round, a participant needs to score approximately 92 (nearest whole number).

To determine the z-value that corresponds to the top 5%, we use the standard normal distribution table. Since we want to find the top 5%, we subtract 5% from 100%, which gives us 95%. The area under the standard normal distribution curve for z-values corresponding to 95% is 1.645 (from the table).

We can use the formula z = (x - μ) / σ to find the score (x) that corresponds to a z-value of 1.645. Plugging in the given values, we get:

1.645 = (x - 76.2) / 17.1

Solving for x, we get x ≈ 91.8. Since we need the score to the nearest whole number, we round up to 92. Therefore, a participant needs to score approximately 92 to make it to the second round.

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When Kimberly rolls two six-sided number cubes numbered 1 through 6, it creates 36 possible outcomes which is represent in the tree diagram below

A tree diagram is a visual representation of outcomes. It consists of branches that represent the possible outcomes of each step.

When it comes to Kimberly rolling two six-sided number cubes, we can start by rolling the first cube, and then rolling the second cube.

For each roll of the first cube, there are six possible outcomes (1 to 6). For each outcome of the first cube, there are six possible outcomes for the second cube.

This results in a total of 6 x 6 = 36 possible outcomes.

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Note that in order to map A onto B, Kyle would have to dilate the given figure by a scale factor or 3.

The scale factor is a metric for figures with similar appearances but differing scales or measurements. Assume two circles appear similar but have different radii. The scale factor specifies how much larger or smaller a figure is than the original figure.

The original point of figure A which has 4 points are

(0,02)

(-1, 2)

(0, 1)

(1, 2)

Multiply all th e points by 3, and you get,

(0,02) x 3 = (0, -6) =

(-1, 2) x 3 = (-3, 6)

(0, 1) x 3 = (0, 3)

(1, 2) x3 = (3, 6)

Plotting the new values will give us the transformation (dilation) required. See the attached image.

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To answer this question, we need to know the specific governing equation of the system. Without this information, we cannot determine the value of x in steady state for either case.

However, we do know that the coefficient 'a' in the equation is a positive constant. When a=4, we can solve for x in steady state using the given equation and the value of a=4. When a=2, we can solve for x in steady state using the same equation and the new value of a=2.

In general, the value of x in steady state will depend on the specific equation and the values of its coefficients.
Hi there! To help you with your question, I need more information about the governing equation of the system. Please provide the complete equation with 'x' and the coefficient 'a'. Once I have that information, I can help you find the steady-state values of x for a=4 and a=2.

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Mr. Agber needs to employ 48 workers to cultivate his 8 acres of farmland in 6 days. The exact relationship between the parameters is W × D = K × L, and the constant (K) in this case is 36.

To solve this problem, we can use the concept of direct variation. The relationship between the number of workers, the size of the land, and the number of days can be expressed as follows:

Number of Workers (W) × Number of Days (D) = Constant (K) × Size of the Land (L)

In Mr. Agber's case, we know the initial situation is:

20 workers × 9 days = K × 5 acres

To find the constant, K, we can rearrange the equation:

K = (20 workers × 9 days) / 5 acres
K = 180 / 5
K = 36

Now that we have the constant, we can use it to determine the number of workers needed for the 8 acres of land in 6 days:

W × 6 days = 36 × 8 acres

Again, rearrange the equation to find the number of workers, W:

W = (36 × 8 acres) / 6 days
W = 288 / 6
W = 48 workers

So, Mr. Agber needs to employ 48 workers to cultivate his 8 acres of farmland in 6 days. The exact relationship between the parameters is W × D = K × L, and the constant (K) in this case is 36.

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Part a): To find f(10)(a), we need to take the 10th derivative of the Taylor series of f(x) at x=a. Since the Taylor series is given by ¿ (-1)n (x-a)^(2n), we need to differentiate this series 10 times with respect to x. Each differentiation will give us a factor of (2n) or (2n-1) times the previous term, and the (-1)n factor will alternate between positive and negative values.

Starting with n=0, we get:

f(x) = ¿ (-1)^n (x-a)^(2n)
f'(x) = ¿ (-1)^n (2n)(x-a)^(2n-1)
f''(x) = ¿ (-1)^n (2n)(2n-1)(x-a)^(2n-2)
f'''(x) = ¿ (-1)^n (2n)(2n-1)(2n-2)(x-a)^(2n-3)
...

After 10 differentiations, we end up with:

f^(10)(x) = ¿ (-1)^n (2n)(2n-1)(2n-2)...(2n-8)(2n-9)(x-a)^(2n-10)

To evaluate this at x=a, we can replace all instances of (x-a) with 0, and we end up with:

f^(10)(a) = ¿ (-1)^n (2n)(2n-1)(2n-2)...(2n-8)(2n-9)(a-a)^(2n-10)
f^(10)(a) = ¿ (-1)^n (2n)(2n-1)(2n-2)...(2n-8)(2n-9)(0)
f^(10)(a) = 0

Therefore, f(10)(a) = 0.

Part b): To find f(11)(a), we need to differentiate the series from part a one more time. We start with the series:

f(x) = ¿ (-1)^n (x-a)^(2n)

and differentiate it 11 times:

f(x) = ¿ (-1)^n (x-a)^(2n)
f'(x) = ¿ (-1)^n (2n)(x-a)^(2n-1)
f''(x) = ¿ (-1)^n (2n)(2n-1)(x-a)^(2n-2)
f'''(x) = ¿ (-1)^n (2n)(2n-1)(2n-2)(x-a)^(2n-3)
...
f^(10)(x) = ¿ (-1)^n (2n)(2n-1)(2n-2)...(2n-8)(2n-9)(x-a)^(2n-10)

and then differentiate once more:

f^(11)(x) = ¿ (-1)^n (2n)(2n-1)(2n-2)...(2n-8)(2n-9)(2n-10)(x-a)^(2n-11)

To evaluate this at x=a, we can replace all instances of (x-a) with 0, and we end up with:

f^(11)(a) = ¿ (-1)^n (2n)(2n-1)(2n-2)...(2n-8)(2n-9)(2n-10)(a-a)^(2n-11)
f^(11)(a) = ¿ (-1)^n (2n)(2n-1)(2n-2)...(2n-8)(2n-9)(2n-10)(0)
f^(11)(a) = 0

Therefore, f(11)(a) = 0.

Given the Taylor series of function f(x):

f(x) = Σ(-1)^n * (x-a)^(2n) / (n+2), where the summation runs from n = 0 to infinity and is centered at x = a.

Part a) To find f(10)(a), we need to determine the 10th derivative of f(x) with respect to x, evaluated at x = a.

Notice that only even terms contribute to the derivatives. The 10th derivative of the Taylor series will have n = 5 (since 2*5 = 10):

f(10)(a) = (-1)^5 * (a-a)^(2*5) / (5+2) = (-1)^5 * 0^10 / 7 = 0

Part b) To find f(11)(a), we need to determine the 11th derivative of f(x) with respect to x, evaluated at x = a. However, the given Taylor series only contains even powers of (x-a), and taking odd derivatives will result in terms with odd powers. Therefore, all odd derivatives, including the 11th derivative, will be 0:

f(11)(a) = 0

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The total area on which the dart may land is 530.93 square units

The dart is a circle and hence the calculations will be accomplished using formula pertaining to a circle.

The circumference of a circle (dart) is given by the formula below

C = 2 * π * r

where

C is the circumference

π = pi is a constant term and

r is the radius.

26π = 2πr

Dividing both sides by 2π, we get:

r = 13

Area of the dart (circle)

A = πr²

A = π * (13)²

A = 169π (in terms of pi)

A = 530.93 square units (to 2 decimal place)

Therefore, the total area on which the dart may land is 169π square units.

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The number that best describes the average number of employees' votes each day is 68.

To find the average number of employees' votes each day, we need to find the total number of votes cast and divide it by the number of days:

Total votes cast = 86 + 95 + 38 + 47 + 73 + 68 = 407

Number of days = 6

Average number of employees' votes each day = Total votes cast / Number of days

= 407 / 6

≈ 67.8

Rounding this to the nearest whole number gives us an average of 68 employees' votes each day.

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The distance Gary traveled to visit his brother is 2.1 x 10^2 times as much as the distance he traveled to visit his sister.

To determine how many times the distance to visit Gary's brother is compared to the distance to visit his sister, we'll follow these steps:

1. Identify the distances traveled:
  - Sister: 2 x 10^3 miles
  - Brother: 4.2 x 10^5 miles

2. Divide the distance to the brother by the distance to the sister:
  (4.2 x 10^5 miles) / (2 x 10^3 miles)

3. Simplify the expression:
  - First, let's divide the coefficients: 4.2 ÷ 2 = 2.1
  - Next, divide the exponents: 10^5 ÷ 10^3 = 10^(5-3) = 10^2

4. Combine the results:
  2.1 x 10^2

So, the distance Gary traveled to visit his brother is 2.1 x 10^2 times as much as the distance he traveled to visit his sister.

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Nick bought 11 apples for $9.79.

Nick paid $6.23 for 7 apples, and he bought 9 apples for $9.79.

Nick bought apples at a farmers market where 5 apples cost $4. 45. If Nick bought 7 apples, he paid $. To find the cost of one apple, we divide $4.45 by 5, which gives us $0.89 per apple.

For 7 apples, we multiply $0.89 by 7, which gives us $6.23.

To find the number of apples Nick bought for $9.79, we set up a proportion:

5 apples/$4.45 = x apples/$9.79

Solving for x, we get x = (9.79 × 5) / 4.45 ≈ 11

Therefore, Nick bought 11 apples for $9.79.

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Answer: (1,9) and x=1

Step-by-step explanation: vertex is also known as the turning point of the graph, which is the point at which the gradient of the graph changes sign in this case it is the coordinate (1,9)

axis of symmetry is an equation of a line which will split the graph into two symmetrical parts as in two parts that can reflected and laterally inverted showing no changes. in this case, the line would pass through the vertex vertically which is the line with a gradient of 1 not passing the through the y axis so it equals x=1

Answer:

To simplify the given expression:

(7/2 x 5/3) + (1/6 x 3/2) - (12/8 x 4/3)

Step 1: Simplify the fractions within the parentheses first.

(35/6) + (1/4) - (48/24)

Step 2: Find a common denominator for all three terms. The least common multiple of 6, 4, and 24 is 24.

(35/6 x 4/4) + (1/4 x 6/6) - (48/24 x 1/1)

Step 3: Simplify the numerators using the common denominator.

(140/24) + (6/24) - (48/24)

Step 4: Combine the like terms.

98/24 or 4 1/6

Therefore, the simplified form of the expression is 4 1/6.

Required annual income does Cecilia need to afford to borrow the money is $221,395.

To determine the annual income that Cecilia needs to afford borrowing $95,000 for the house she likes, we need to consider her debt-to-income ratio (DTI).

Normally, lenders require a DTI ratio of 43% or lower which means that the total amount of debt Cecilia has (including the mortgage payment) should not exceed 43% of her gross income.

Let a DTI ratio of 43%, Cecilia's annual income should be at least $221,395 to afford borrowing $95,000 for the house.

We can calculate it by multiplying the amount of the loan by 100 and dividing by the DTI ratio: $95,000 x 100 / 43 = $221,395

Hence, required annual income does Cecilia need to afford to borrow the money is $221,395.

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The probability of Paulina getting injured in either volleyball or soccer is 0.19.

To find the probability of Paulina getting injured in either volleyball or soccer, we can use the formula:

P(Volleyball or Soccer) = P(Volleyball) + P(Soccer) - P(Volleyball and Soccer)

We are given that the probability of Paulina getting injured playing volleyball is 0.1, and the probability of her getting injured playing soccer is 1/10 = 0.1 as well. However, we are not given any information about whether these events are independent or not, so we cannot assume that P(Volleyball and Soccer) is equal to the product of P(Volleyball) and P(Soccer).

If we assume that the events are independent, then we can calculate P(Volleyball and Soccer) as:

P(Volleyball and Soccer) = P(Volleyball) * P(Soccer) = 0.1 * 0.1 = 0.01

Then, using the formula above, we can calculate the probability of Paulina getting injured in either volleyball or soccer as:

P(Volleyball or Soccer) = 0.1 + 0.1 - 0.01 = 0.19

Therefore, the probability of Paulina getting injured in either volleyball or soccer is 0.19, assuming that the events are independent.

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We can rewrite the integrand as follows:

1 / (2 + e^x + e^(-x))

To evaluate this integral, we use the substitution u = e^x:

du/dx = e^x

dx = du/u

Substituting u and dx in terms of u into the integral, we get:

∫ (1 / (2 + u + 1/u)) du

Multiplying the numerator and denominator by u, we get:

∫ (u / (2u + u^2 + 1)) du

Next, we complete the square in the denominator:

u^2 + 2u + 1 = (u + 1)^2

So, we can write:

∫ (u / ((u + 1)^2 + 1)) du

Now, we use the substitution v = u + 1:

dv/du = 1

du = dv

Substituting v and du in terms of v into the integral, we get:

∫ ((v - 1) / (v^2 + 1)) dv

Using partial fractions, we can write:

(v - 1) / (v^2 + 1) = A(v - i) + B(v + i)

where A and B are constants to be determined, and i = sqrt(-1).

Multiplying both sides by v^2 + 1 and simplifying, we get:

v - 1 = A(v - i)(v^2 + 1) + B(v + i)(v^2 + 1)

Substituting v = i, we get:

-i - 1 = A(0) + B(2i)

B = -(i + 1)/2i = (1 - i)/2

Substituting v = -i, we get:

i - 1 = A(-2i) + B(0)

A = (1 - i)/2i = (i - 1)/2

Therefore, we have:

(v - 1) / (v^2 + 1) = [(i - 1)/(2i)](v + i) - [(1 - i)/(2i)](v - i)

Substituting back for v, we get:

(u / ((u + 1)^2 + 1)) = [(i - 1)/(2i)][(u + 1) + ie^x] - [(1 - i)/(2i)][(u + 1) - ie^x]

Substituting this expression back into the integral and simplifying, we get:

∫ (1 / (2 + e^x + e^(-x))) dx = [(i - 1)/(2i)]*ln(e^x + e^(-x) + 2) - [(1 - i)/(2i)]*ln(e^x - i) + C

where C is the constant of integration.

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Lizzie's divisibility test works for numbers that are multiples of 11.

Lizzie's divisibility test for a number m works as follows: break a positive integer n into two-digit chunks, find the alternating sum of these two-digit numbers, and if the result is divisible by m, then n is also divisible by m.

For example, if we have a number n = 354764, we would break it into the two-digit chunks 64, 47, and 35, then find the alternating sum of these numbers (64 - 47 + 35 = 52).

If we want to test if n is divisible by m = 4, we check if 52 is also divisible by 4. If 52 is divisible by 4, then we can conclude that 354764 is also divisible by 4.

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The quadratic parent function is f(x) = x^2, which is a U-shaped curve that passes through the origin. When we apply transformations to the quadratic parent function, its shape and position change accordingly.

One of the most common transformations applied to the quadratic parent function is vertical translation, which shifts the entire graph up or down. If we add a constant k to the function, the graph is shifted k units up. Similarly, if we subtract a constant k from the function, the graph is shifted k units down.Another common transformation is horizontal translation, which shifts the entire graph left or right.

If we replace x with x + h in the function, the graph is shifted h units to the left. If we replace x with x - h, the graph is shifted h units to the right.These transformations can be combined to create a variety of different quadratic functions. Each transformation changes the position or shape of the graph in a specific way, allowing us to create complex and interesting functions from the simple quadratic parent function.

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we can see that there is no stem value of 4 and therefore no department store with 49 pairs of glasses.

To find the largest number of pairs of glasses at any one department store, we need to examine the stem-and-leaf plot provided.

The stem-and-leaf plot shows the number of pairs of glasses at each store, with the first digit (the stem) indicating the tens place and the second digit (the leaf) indicating the ones place.

Looking at the plot, we can see that the largest stem is 4, which corresponds to the number 40. The largest leaf for stem 4 is 8, which corresponds to the number 48. Therefore, the largest number of pairs of glasses at any one department store is 48.

We can also verify this by scanning through the leaves in the plot and looking for the largest value. The largest leaf value is 9, which corresponds to the number 49. However, we can see that there is no stem value of 4 and therefore no department store with 49 pairs of glasses.

The largest number of pairs of glasses at any one department store is indeed 48.

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Thus, the smallest number of boxes of pencils and erasers, teacher should buy are - 7 and 5.

A natural number other than 1 whose own factors are 1 and itself is said to have a prime factor. In actuality, the initial handful of prime numbers are 2, 3, 5, 7, 11, and so forth. Nevertheless, we may also apply the so-called prime factorization, which actually involves using factor trees, for numbers.

Given data:

1 pencil box = 10 pencils

1 Erasers box = 14 Erasers

This can be written as the prime factors as:

10 = 2 x 5

14 = 2 x 7

Taken the least common number of each.

2 x 5 x 7

= 70

Thus,  lowest common multiple.

To find the number of boxes.

boxes of pencils  : 70 / 10 = 7

boxes of erasers : 70 / 14 = 5

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Complete question:

pencils are sold in boxes of 10, erasers are sold in boxes of 14, a teacher wants to buy the same number of pencils and erasers. Work out the smallest number of boxes of each item she should buy.

Answer: 50

Step-by-step explanation:

37 is 74 percent of what number

We already have our first value 37 and the second value 74. Let's assume the unknown value is Y which answer we will find out.

As we have all the required values we need, Now we can put them in a simple mathematical formula as below:

STEP 1   37 = 74% × Y

STEP 2   37 = 74/100× Y

Multiplying both sides by 100 and dividing both sides of the equation by 74 we will arrive at:

STEP 3     Y = 37 × 10074

STEP 4     Y = 37 × 100 ÷ 74

STEP 5     Y = 50

Finally, we have found the value of Y which is 50 and that is our answer.

Answer:

Set A: 1, 7, 10, 17, 20

Range: 19

Mean: 11

Set B: 10, 12, 16, 17, 18

Range: 8

Mean: 14.6

How to find...

Mean: Divide the sum of all values in a data set by the number of values.

Range: Find the largest observed value of a variable (the maximum) and subtract the smallest observed value (the minimum).

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The expanded form of the smallest bone in the human body located in the ear which is about 2. 8 millimeters in length is                                       2 × 1 millimeter + 8 × 0.1 millimeters.

Given that the smallest bone in the human body is the stapes bone. It is located in the ear and is about 2. 8 millimeters in length.

To write 2.8 millimeters in expanded form, we need to express each digit's place value in the number.

2.8 millimeters can be written as:

2 millimeters + 0.8 millimeters

or

2 millimeters + 8/10 millimeters

In expanded form, this is:

2 millimeters + 8 tenths of a millimeter

or

2 × 1 millimeter + 8 × 0.1 millimeters

Therefore, 2.8 millimeters in expanded form is:

2 × 1 millimeter + 8 × 0.1 millimeters = 2.0 + 0.8 = 2.8 millimeters

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