Let's use Priya as an example again. The number of hairs per square cm varies from person to person, but Priya has approximately 150 hairs per square cm.



She measures the diameter of her scalp from front to back and ear to ear and she finds that it is about 28cm in both directions. Her head is round so that makes her think that she could use the area of a circle to estimate how many total hairs she has on her head.



a. What is the area of Priya's scalp?≈


≈


cm2



b. About how many strands of hair are on Priya's head? ≈


≈


strands of hair

It will take approximately 5.28 years for the depth of the lake to reach 26.7 meters.

The situation represents decay because the depth of the lake decreases over time.

The rate of growth or decay, r, is equal to -0.02 (negative because it represents a decrease of 2% per year).

So the depth of the lake each year is 0.98 times the depth in the previous year (100% - 2% = 98%).

To find the number of years it will take for the depth of the lake to reach 26.7 meters, we can use the formula for exponential decay:

26.7 = 30 *[tex](0.98)^n[/tex]

Solving for n, we get:

[tex](0.98)^n = \frac{26.7 }{ 30}[/tex]

n =[tex]log\frac{(\frac{26.7}{30}) }{ log(0.98)}[/tex]

Using a calculator, we find n ≈ 5.28 years.

Therefore, it will take approximately 5.28 years for the depth of the lake to reach 26.7 meters.

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To find the missing measures of a rectangle, we should know that all rectangles have four sides, and each side has a length.

If we have a quadrilateral like a rectangle with four angles, all the angles must be 90 degrees. We need to use the properties of rectangles to find the missing measures of a rectangle. We will find the length of each side first. The length of all sides of a rectangle should be the same. Then, we will calculate the area of the rectangle by multiplying the length of one side by the length of the other side.

Finally, to find the missing measures we will use the Pythagoras Theorem. The Pythagoras Theorem states that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. Using this theorem, we can find the length of the hypotenuse of the rectangle.

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The complete question is " If each quadrilateral is given, then define the steps to find the missing measures of a rectangle."

The number of students who drive to school can be calculated as one-sixth of the total number of students.

Let's assume the total number of students in the Mupuvr CLC MLMMS4 group is represented by the variable 'x'. According to the given information, half of the students walk to school, which is equal to (1/2) * x. One-third of the students take a taxi, which is equal to (1/3) * x. The remaining students, who claim to drive, can be calculated as x - [(1/2) * x + (1/3) * x].

Simplifying this expression, we have x - (5/6) * x, which is equal to (1/6) * x. Therefore, the number of students who claim to drive to school is one-sixth of the total number of students.

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Hunter needs 3 ounces of seeds and 7 ounces of dried fruit, which will cost him $22 in total. The system of equations is 1.5x + 2.5y = 22 and x + y = 10. The solution is (x,y) = (3,7).

The total amount of snack mix required is 10 ounces. So, the sum of the amount of seeds and dried fruit should be 10.

x + y = 10 ---(Equation 1)

The cost of seeds is $1.50 per ounce and the cost of dried fruit is $2.50 per ounce. The total cost of snack mix should be $22.

1.50x + 2.50y = 22 ---(Equation 2)

To solve the system, we can use substitution method. Solving Equation 1 for y, we get

y = 10 - x

Substituting this value of y in Equation 2, we get

1.5x + 2.5(10 - x) = 22

Simplifying and solving for x, we get

1.5x + 25 - 2.5x = 22

-x = -3

x = 3

So, Hunter needs 3 ounces of seeds and 7 ounces of dried fruit to make 10 ounces of snack mix with a total cost of $22.

The ordered pair is (3, 7).

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Anissa's statement is correct.

The classification of distance, d, as either an independent or dependent

variable depends on the context in which it is used.

Distance as an independent variable:

In this case, distance, d, is considered an independent variable because it

affects the amount of time someone has traveled.

When we are interested in studying how the distance traveled affects

other variables, such as time or fuel consumption, we treat distance as the

independent variable and manipulate it to observe its impact on the

dependent variables.

For example, if we conduct an experiment to measure the time it takes to

travel a certain distance under different conditions (e.g., different speeds or

modes of transportation), we would vary the distance as the independent

variable while keeping other factors constant.

In this scenario, distance is the independent variable, and time is the

dependent variable.

Distance as a dependent variable:

On the other hand, distance, d, can also be considered a dependent

variable when it is affected by the speed traveled.

In this case, speed becomes the independent variable, and distance is

dependent on the speed at which an object or person travels.

For instance, if we investigate how the speed of a vehicle affects the

distance it can travel within a given time, we would manipulate the speed

as the independent variable and observe the corresponding changes in

distance.

Here, distance is the dependent variable, and speed is the independent

variable.

In summary, Anissa's statement is accurate because distance, d, can be

considered an independent variable when it affects other factors such as

time, and it can also be a dependent variable when it is influenced by

factors like speed.

The designation of distance as independent or dependent depends on the

specific context and the relationship it shares with other variables in the

given situation.

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The domain of a function is the set of all possible inputs for the function. In this case, the function is h(t)=80t-16t². Since time cannot be negative, the domain of h(t) is all real numbers greater than 0. Then,  required answer for the provided question is Option A.

To evaluate the maximum height reached by the rocket, now to calculate the derivative of the function h(t)=80t-16t² and set it equal to zero.
This will provide  the time at which the rocket reaches its maximum height. Therefore, here we can place  time back into the original function to evaluate the maximum height.
h(t)=80t-16t²
h'(t)=80-32t
0=80-32t
32t=80
t=2.5 seconds

Then the rocket touches its maximum height after 2.5 seconds.
To evaluate the maximum height, place t=2.5 into h(t):
h(2.5)=80(2.5)-16(2.5)²
=100 feet

Hence, the maximum height touched by the rocket is 100 feet.

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The resulting graph of g(x) will resemble the graph of f(x), but it will be stretched vertically and pushed leftward by three units.

Each element of a set (referred to as the domain) is mapped by a rule known as a function to a particular element of this other set (called the range). A function is, in other words, a connection between two subsets in which every member of the domain has a unique relationship to every element of the range. One popular approach to write a function is via function notation, which entails writing the function name surrounded by the incoming signal in parentheses, as in the following example: f (x). For instance, the formula f(x) = 2x + 1 takes the input x and produces the result 2x + 1.

given,

The fundamental quadratic function f(x) = x² serves as the parent function for g(x) = (x + 3)².

Since the argument of the function (x + 3) is x shifted left by 3 units, the graph of f(x) is horizontally displaced to the left by 3 units.

Given that the coefficient of the squared term is 1, the graph of the resulting function is shifted up by a factor of 1.

As a result, the transformation can be represented as a 3 unit horizontal shift and a 1 unit vertical stretch.

The resulting graph of g(x) will resemble the graph of f(x), but it will be stretched vertically and pushed leftward by three units.

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Tommy bounces off Joe at a speed of 5.9451 m/s after the collision.

We need to use the conservation of momentum, which states that the total momentum of a closed system remains constant. In this case, the closed system is the two players, Joe and Tommy.

We can start by calculating the initial momentum of the system, which is given by:

[tex]p_{initial} = m_{Tommy} * v_{Tommy} + m_{Joe} * v_{Joe}[/tex]

where m_Tommy and m_Joe are the masses of Tommy and Joe, respectively, and v_Tommy and v_Joe are their initial velocities.

Plugging in the given values, we get:

[tex]p_{initial} = 91 kg * 5 m/s + 97 kg * 6 m/s[/tex]

p_initial = 1123 kgm/s

After the collision, Joe is standing still, which means his velocity is zero. Let's call Tommy's velocity after the collision v_Tommy', which we need to find.

The final momentum of the system is given by:

[tex]p_{final} = m_{Tommy} * v_{Tommy'} + m_{Joe} * 0[/tex]

where we set Joe's velocity to zero since he's standing still.

Since the momentum is conserved, we can equate p_initial and p_final:

p_initial = p_final

[tex]m_Tommy * v_Tommy + m_Joe * v_Joe = m_Tommy * v_Tommy'[/tex][tex]m_{Tommy} * v_{Tommy} + m_{Joe} * v_{Joe} = m_{Tommy} * v_{Tommy'}[/tex]

91 kg * 5 m/s + 97 kg * 6 m/s = 91 kg * v_Tommy'

Solving for v_Tommy', we get:

[tex]v_{Tommy'} = (91 kg * 5 m/s + 97 kg * 6 m/s) / 91 kg[/tex]

v_Tommy' = 5.9451 m/s (rounded to four decimal places)


In summary, we used the conservation of momentum to calculate the velocity of Tommy after bouncing off Joe. We found that he bounces off Joe at a speed of 5.9451 m/s.

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Answer:

52.5

Step-by-step explanation:

15×7=105÷2

=52.5 ans it means fifteen times seven divided by two

The distance it would take to travel across the river on the bridge than to take the ferry is 4√6 units.

In Mathematics and Geometry, the distance between two (2) end points that are on a coordinate plane can be calculated by using the following mathematical equation:

Distance = √[(x₂ - x₁)² + (y₂ - y₁)²]

Where:

x and y represent the data points (coordinates) on a cartesian coordinate.

By substituting the given end points into the distance formula, we have the following;

Distance AC = √[(-4 - 0)² + (2 - 2)²]

Distance AC = √[(-4)² + (0)²]

Distance AC = √[16 + 0]

Distance AC = √16

Distance AC = 4 units.

Distance AB = √[(2 - 0)² + (0 + 2)²]

Distance AB = √[(2)² + (2)²]

Distance AB = √[4 + 4]

Distance AB = √8

Distance AC = 2√2 units.

From Pythagorean Theorem, the length of BC is given by;

BC² = (2√2)² + 4²

c² = 8 + 16

c = √24

c = 4√6 units.

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Answer:

E

Step-by-step explanation:

This figure contains a square and a quarter of a circle

The perimeter is the sum of all side lengths

Let's find the circumference of the quarter of a circle:

[tex]0.25c = 2\pi \times r[/tex]

The diameter is equal to a square's side length:

d = 8

hence, r = 0,5 × 8 = 4

[tex]0.25c = 2 \times 3.14 \times 4 = 25.12[/tex]

Now, we can find the perimeter:

P = 25,12 + 8 + 8 = 41,12

As an estimation of the exchange rates, 16 Euros is approximately equal to 12 Pounds.

To convert Euros to Pounds, we first need to determine the conversion rate between these two currencies. From the information provided, we know that 3 Pounds is approximately equal to 4 Euros. Using this information, we can establish a conversion factor by dividing 3 Pounds by 4 Euros:

Conversion factor = 3 Pounds / 4 Euros = 0.75 Pounds per Euro

Now that we have the conversion factor, we can use it to convert 16 Euros to Pounds. To do this, we simply multiply the amount in Euros (16) by the conversion factor (0.75 Pounds per Euro):

16 Euros * 0.75 Pounds per Euro = 12 Pounds

So, as an estimation, 16 Euros is approximately equal to 12 Pounds. Keep in mind that exchange rates between currencies can fluctuate over time, so it's always a good idea to double-check the current rate before making any financial transactions.

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Complete Question:

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

Convert €16 to pounds.

Answer:

Step-by-step explanation:

explanation in image

The difference in masses is equal to 1,728 grams.

In Mathematics and Geometry, the volume of a rectangular prism can be calculated by using the following formula:

Volume of a rectangular prism = L × W × H

Where:

By substituting the given dimensions (parameters) into the formula for the volume of a rectangular prism, we have the following;

Volume of rectangular prism = 9 × 3 × 8

Volume of rectangular prism = 216 cm³.

Mass of gold = density × volume

Mass of gold = 19.3 × 216

Mass of gold = 4,168.8 grams.

Mass of lead = 11.3 × 216

Mass of lead = 2,440.8 grams.

Difference in masses = 4,168.8 grams - 2,440.8 grams.

Difference in masses = 1,728 grams.

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To show that Harold is wrong about the cost of chocolate biscuits being $2 each, we can use the given information:

You bought 3 packets of plain biscuits and 5 packets of chocolate biscuits, and the total cost was $34.

Let's use the variables P for the cost of plain biscuits and C for the cost of chocolate biscuits.

We can write the equation:

3P + 5C = $34

Harold claims that the cost of chocolate biscuits is $2 each. So, let's substitute C = $2 into the equation:

3P + 5($2) = $34

Now, we can solve for P:
3P + $10 = $34
3P = $24
P = $8

So, the cost of plain biscuits is $8 each. This means you bought 3 packets of plain biscuits for $24 and 5 packets of chocolate biscuits for $10, which adds up to the total cost of $34.

Since the cost of plain biscuits came out to be a whole number, Harold's claim that chocolate biscuits cost $2 each is not necessarily wrong.

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Answer:

Step-by-step explanation:

EX.  in function f(x) = 2 cos x -2  

The first 2 is your amplitute, how high from middle line it goes

the last 2 is the shift in y direction.  

For f(x) = 2 cos x -2   (see image for this function)

it has been shifted down 2 and has a period

At [tex]\pi[/tex] your function has a solution of -4

The first blank is  f(x) = cos x+2

Second blank is f(x) =  cos x -2

The relation is not an equivalence relation. (a) {(2,2),(2,3),(2,4),(3,2),(3,3),(3,4)}:

Reflexive: (2,2), (3,3) are present, but (1,1) and (4,4) are not present. Hence, not reflexive.

Symmetric: (2,3) is present, but (3,2) is also present. Hence, not symmetric.

Transitive: No counterexample to transitivity exists. Hence, it is transitive.

Therefore, the relation is not an equivalence relation.

(b) {(1,1),(1,2),(2,1),(2,2),(3,3),(4,4)}:

Reflexive: (1,1), (2,2), (3,3), (4,4) are present. Hence, reflexive.

Symmetric: (1,2) is present, but (2,1) is also present. Hence, symmetric.

Transitive: No counterexample to transitivity exists. Hence, it is transitive.

Therefore, the relation is an equivalence relation.

(c) {(2,4),(4,2)}:

Reflexive: (2,2) and (4,4) are not present. Hence, not reflexive.

Symmetric: (2,4) is present, but (4,2) is not present. Hence, not symmetric.

Transitive: No counterexample to transitivity exists. Hence, it is transitive.

Therefore, the relation is not an equivalence relation.

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It would take approximately 125 of the smallest cubes to fill the largest cube.

To determine the number of the smallest cubes that would fit inside the largest cube, we need to calculate the volume of both cubes.

The volume of a cube can be calculated by multiplying the length of one side by itself three times (since a cube has three equal sides). So, the volume of the smallest cube would be 1.5 x 1.5 x 1.5 = 3.375 cubic inches.

The volume of the largest cube can be calculated in the same way. The length of one side is 7.5 inches, so the volume would be 7.5 x 7.5 x 7.5 = 421.875 cubic inches.

To determine how many of the smallest cubes would fit inside the largest cube, we need to divide the volume of the largest cube by the volume of the smallest cube. So, 421.875 divided by 3.375 equals approximately 125.

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The zeros of the function y = (x − 4)(x² − 12x + 36) are 4 and 6.

To find the zeros of the function y = (x - 4)(x² - 12x + 36), we need to set y to zero and solve for x.

0 = (x - 4)(x² - 12x + 36)

Now, solve for each factor separately:

1) x - 4 = 0
x = 4

2) x² - 12x + 36 = 0
This is a quadratic equation, and we can factor it as (x - 6)(x - 6).
So, x - 6 = 0
x = 6

The zeros of the function are x = 4 and x = 6. The zeros of a function are the values of its variables that meet the equation and result in the function's value being equal to 0.

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To evaluate the line integral JF.dr, where F = (-2 sin x, 2 cos y, 6zx) and C is the path given by r(t) = (3t^3, -3t^2, -3t) for 0 <= t <= 1, we first need to parameterize F and r in terms of t.

For F, we have:

F = (-2 sin x, 2 cos y, 6zx) = (-2 sin (3t^3), 2 cos (-3t^2), 6(3t^3)(-3t)) = (-2 sin (3t^3), 2 cos (3t^2), -54t^4)

For r, we already have the parameterization:

r(t) = (3t^3, -3t^2, -3t)

Now we can use the formula for the line integral:

JF.dr = ∫(F dot dr)

= ∫(-2 sin (3t^3) dx + 2 cos (3t^2) dy - 54t^4 dz)

= ∫(-18t^2 cos (3t^2) + 18t^2 cos (3t^2) - 54t^4) dt

= ∫(-54t^4) dt

= -9t^5 + C

Evaluating this expression for t = 1 and t = 0, we get:

JF.dr = (-9(1)^5 + C) - (-9(0)^5 + C)

= -9 + 9

= 0

Therefore, the line integral JF.dr evaluated along the path given by r(t) = (3t^3, -3t^2, -3t) for 0 <= t <= 1 is equal to 0.

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Answer:

8.19 units.

Step-by-step explanation:

I didn't use desmos, i completed the question with all steps and working and didn't require desmos. Hope this Helps. Question was solved using trignometric ratios.

Answer:

Around 3 years

Step-by-step explanation:

6% of 30000 is 1800. I subtracted 1800 from 30000 until it got down too 24000 so im assuming that's how old

The amount of carrying charges for a $10,000 college loan with a 5% down payment, a 10% APR, and a 36-month repayment period is approximately $1,571.44.

To calculate the amount of carrying charges for a $10,000 college loan with a 5% down payment, a 10% annual percentage rate (APR), and a 36-month repayment period, follow these steps:
1. Determine the down payment: 5% of $10,000 = $500.
2. Subtract the down payment from the loan amount: $10,000 - $500 = $9,500. This is the principal loan amount.
3. Calculate the monthly interest rate: 10% APR / 12 months = 0.833% or 0.00833 as a decimal.

4. Calculate the monthly payment using the loan payment formula: P = r * PV / (1 - (1 + r)⁻ⁿ), where P is the monthly payment, r is the monthly interest rate, PV is the present value (principal loan amount), and n is the number of monthly payments. P = 0.00833 * $9,500 / (1 - (1 + 0.00833)⁻³⁶) = $307.54.
5. Determine the total amount paid over the loan term: Monthly payment * Number of monthly payments = $307.54 * 36 = $11,071.44.
6. Calculate the carrying charges: Total amount paid - Principal loan amount = $11,071.44 - $9,500 = $1,571.44.

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The expression that is equivalent to the one Regina wrote is y + 27/4

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

y + 9 x 3/4

This means that

Expression = y + 9 x 3/4

When expanded, we have

Expression = y + 27/4

Using the above as a guide, we have the following:

The expression that is equivalent to the one Regina wrote is y + 27/4

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The expression that represents the cost, in dollars, of admission to the museum including admittance to n special exhibits can be written as 12.50 + 2n

Here, 12.50 is the base admission cost without any special exhibit, and 2n represents the cost of n special exhibits, where each exhibit costs an extra $2.00.

By multiplying the number of special exhibits, n, by $2.00, we get the total cost of special exhibits, which we can then add to the base admission cost to get the total cost of admission to the museum including admittance to n special exhibits.

For example, if someone wants to visit the museum and see 3 special exhibits, the cost of admission would be:

12.50 + 2(3) = 12.50 + 6 = $18.50

Therefore, the expression 12.50 + 2n represents the total cost of admission to the museum including admittance to n special exhibits.

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Complete question is:

A museum charges $12.50 for admission. Each special exhibit costs an extra $2.00. Part A Write an expression that represents the cost, in dollars, of admission to the museum including admittance to n special exhibits

Two  vectors in opposite directions that are orthogonal to u are v = 5i + 4j and w = -4i + 5j.

To find two vectors in opposite directions that are orthogonal to u, we need to use the cross product. The cross product of two vectors is a vector that is perpendicular to both of them. We can choose any two non-collinear vectors as long as they are orthogonal to each other and the given vector.

Let's find the cross product of u and a vector v. The cross product of two vectors a and b is given by:

a x b = |a| |b| sinθ n

where |a| and |b| are the magnitudes of the vectors, θ is the angle between them, and n is a unit vector perpendicular to both a and b in the direction given by the right-hand rule.

Since we want v to be orthogonal to u, we need to choose v such that u x v = 0. This means that the angle between u and v is either 0 or 180 degrees, and |v| is arbitrary.

Let v = 5i + 4j. Then, we have:

u x v = (1/4 i - 4/5j) x (5i + 4j)

= (-16/20)i - (5/20)j + (1/20)k

= (-4/5)i - (1/4)j + (1/20)k

Since u x v is not equal to zero, v is not orthogonal to u. To find another vector that is orthogonal to u, we can take the cross product of u and w, where w = -4i + 5j. Then, we have:

u x w = (1/4 i - 4/5j) x (-4i + 5j)

= (-5/20)i + (16/20)j + (1/20)k

= (-1/4)i + (4/5)j + (1/20)k

Since u x w is also not equal to zero, we need to adjust the signs of v and w to make them orthogonal to u. We can do this by taking the opposite of v and w. Therefore, two vectors in opposite directions that are orthogonal to u are v = 5i + 4j and w = -4i + 5j.

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The particle's velocity vector at t=5 is v(5) = 1i + 30j, and the acceleration vector at t=5 is a(5) = 0i + 6j.

To find the particle's velocity, we take the derivative of the path r(t) with respect to time:

v(t) = r'(t) = i + 6t j

Substituting t=5, we get:

v(5) = 1i + 30j

To find the particle's acceleration, we take the derivative of the velocity with respect to time:

a(t) = v'(t) = 0i + 6j

Substituting t=5, we get:

a(5) = 0i + 6j

Note that the acceleration vector is constant, which is expected since the particle is moving along a parabolic path, and the curvature of the path remains constant.

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To find the sale price of each item, we need to use some basic algebra. Let's call the sale price of each item "x".

First, we need to find the total cost of the table rental for all six friends. Since each friend needs to pay $7.20, the total cost of the table rental is 6 * $7.20 = $43.20.

Next, we need to find the total revenue from selling the items. Each friend sells 3 items, so the total number of items sold is 6 * 3 = 18. The total revenue is the number of items sold multiplied by the sale price, so the total revenue is 18x.

We know that the total profit is $25.20, which is the total revenue minus the total cost of the table rental. So we can set up the equation:

18x - $43.20 = $25.20

Simplifying this equation, we get:

18x = $68.40

Dividing both sides by 18, we get:

x = $3.80

Therefore, the sale price of each item is $3.80.

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