Reema wants to build a coat rack for the front hallway. The wall is
4 feet long, and the piece of wood she has for the rack is 28 1/4
inches long. She wants to center the coat rack on the wall. There
needs to be an equal amount of space, about 7 or 8 inches,
between the coat hooks. The first and last hooks should be no

less than 1 3/4 inches from either end of the wood. How many
hooks should Reema use? What is the distance between the
hooks? What is the distance of each hook from the left edge of
the wood?

Use tracing paper for the rotation. Put a dot on the origin (0,0) and trace the shape. Then turn the paper 180 degrees and redraw the shape in its new position.

For the reflection, the line y = x + 2 would have an x interrcept of (-2,0) and y intercept of (0,2) so, draw a line through those coordinates and reflect the new shape you traced. That will be your final answer, you can rub out the rotated one as the question asked you to rotate AND reflect. Not just rotate.

Answer:

Step-by-step explanation:

Here are the probabilities for each event:

The probability of drawing a blue or green marble out of a bag containing three blue, two green, eight yellow, four red, and three orange marbles is 0.25.

The probability of choosing a card with a heart on it out of a standard deck of cards is 0.25.

The probability of getting an A or B on a paper if you could get in A,B,C, or F is 0.5.

The probability of getting a heads or tails on a flip of a coin is 0.5.

I hope this helps! Let me know if you have any other questions.

If Erin had 150m/ of buttermilk and recipe require 0.25 cups of buttermilk. Erin would  have enough buttermilk for the recipe (2).

1.2. Convert the units of measurement to a common unit.

Erin has:

150 ml of buttermilk

Recipe requires 0.25 cups of buttermilk.

1 cup=  236.59 ml

So,

0.25 cups = 0.25 * 236.59 = 59.15 ml

Therefore Erin has enough buttermilk for the recipe.

1.3. The cake recipe calls for the following ingredients:

0.8 kg of flour

650 g of sugar

900,000 mg of butter

Simplify the units by converting them to a common unit

0.8 kg = 0.8 * 1000 g = 800 g

650 g = 650 g (no conversion needed)

900,000 mg = 900,000 mg / 1000 = 900 g

Therefore the required amounts of the ingredients are: 800 g of flour, 650 g of sugar, 900 g of butter.

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Answer:

It's the 3rd one down. 4,-12,6,42,18,0

Step-by-step explanation:

Answer:

[24  -12  6]

[42   18  0]

Step-by-step explanation:

Multiply each number in the brackets individually by 6.

Please mark me brainliest! Thanks!

Answer:

Round both numbers to 1 significant figure.

400+400=800

800 is the answer.

Answer will be 27.

Given,

3√81

Now, to solve the expression the squares of whole numbers and square roots for some numbers must be known.

For example, squares of

1² = 1

2² = 4

3² = 9

4² = 16

5² = 25

6² = 36

7² = 49

8² = 64

9² = 81
10² = 100

Square roots,

√100 = 10

√81 = 9

√64 = 8

√49 = 7

√36 = 6

√25 = 5

√16 = 4

√9 = 3

√4 = 2

√1 = 1

Now ,

3√81 = 3× 9

= 27.

Thus the value is 27.

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Step-by-step explanation:

To simplify the expression √3 * √5 * √12, you can combine the square roots and simplify the numbers under the radicals.

Step 1: Simplify the numbers under the radicals:

√3 = √(3) (The square root of 3 cannot be simplified further because 3 is a prime number.)

√5 = √(5) (The square root of 5 cannot be simplified further because 5 is a prime number.)

√12 = √(4 * 3) (The number 12 can be expressed as the product of 4 and 3, and the square root of 4 simplifies to 2.)

√12 = 2√(3)

Step 2: Combine the simplified square roots:

√3 * √5 * √12 = √(3) * √(5) * 2√(3)

Step 3: Apply the rule of multiplying square roots:

√(3) * √(5) = √(3 * 5) = √15

Step 4: Substitute the simplified square roots back into the expression:

√3 * √5 * √12 = √15 * 2√(3)

Step 5: Simplify the expression further:

√15 * 2√(3) = 2√(15) * √(3) = 2√(15 * 3) = 2√(45)

Step 6: Simplify the number under the square root:

2√(45) = 2√(9 * 5) = 2√(9) * √(5) = 2 * 3 * √(5) = 6√(5)

Therefore, the simplified form of √3 * √5 * √12 is 6√5.

Answer: 6√5

√180 = 6√5

The quadrant of the terminal side for 15) is fourth quadrant.

To change from radians to degrees, you need to the multiple the number of radians by 180/π.

Multiple the number of radians by 180/π.

15) 5 radians = 5 * (180/π)

16) 11π/6 = (11*180)/6 = 330.

19) 3.5 = 3.5*(π/180) degree.

20) 1 = 1*(π/180) degree.

therefore, terminal side for 15) is fourth quadrant.

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total angles of the triangle = 180°

∠BAC + ∠ABC + ∠ACB = 180°

40° + 90° + ∠ACB = 180°

130° + ∠ACB = 180°

∠ACB = 180° - 130°

∠ACB = 50°

∠ACB and ∠ECD is opposite angles. So, that two angles are equal.

∠ACD = ∠ECD = 50° (B)

That's it :)

Step-by-step explanation:

50°

abc is right angle and

a is 40°

b is 90°

c is 50°

so angle acb is vertical opposite to angle ecd and it is equal

Answer:

348 cm²

Step-by-step explanation:

In this problem, we are asked to find the surface area of the regular hexagonal prism. We can use the formula:

[tex]SA = 2A + (P \cdot h)[/tex]

where [tex]A[/tex] is the area of the prism's hexagonal faces, [tex]P[/tex] is the perimeter of the hexagonal faces, and [tex]h[/tex] is the prism's height.

We can solve for the area of the hexagonal faces by splitting it into 6 triangles and multiplying the area of each triangle by 6.

[tex]A = 6\left(\dfrac{1}{2} bh\right)[/tex]

where [tex]b[/tex] is the triangle's base and [tex]h[/tex] is the triangle's height.

[tex]A = 6\left(\dfrac{1}{2}\cdot 4 \cdot 3.5\right)[/tex]

[tex]A = 6\left(2 \cdot 3.5\right)[/tex]

[tex]A = 12 \cdot 3.5[/tex]

[tex]A = 42\text{ cm}^2[/tex]

We can solve for the perimeter by multiplying one side length by 6.

[tex]P = 6(4) = 24\text{ cm}[/tex]

We are given that the height of the prism is 11 cm.

[tex]h = 11\text{ cm}[/tex]

Finally, we can solve for the surface area of the prism by plugging these values into the above formula.

[tex]SA = 2A + (P \cdot h)[/tex]

[tex]SA = 2(42) + (24 \cdot 11)[/tex]

[tex]SA = 84 + 264[/tex]

[tex]\boxed{SA = 348 \text{ cm}^2}[/tex]

Rounding up to the nearest cent, the present value that must be invested in the CD now is approximately $3333.34.

To calculate the present value required to have $4500 after 5 years with a simple interest rate of 7.0%, you can use the formula for simple interest:

Present Value = Future Value / (1 + (Interest Rate × Time))

In this case:

Future Value = $4500

Interest Rate = 7.0%

= 0.07

Time = 5 years

Substituting these values into the formula:

Present Value = $4500 / (1 + (0.07 × 5))

Present Value = $4500 / (1 + 0.35)

Present Value = $4500 / 1.35

Present Value ≈ $3333.33

You may use the simple interest calculation to get the present value necessary to have $4500 after five years with a simple interest rate of 7.0%:

Future Value / (1 + (Interest Rate Time)) = Present Value

In this instance

$4500 is the future value.

Rate of Interest = 7.0% = 0.07

t = 5 years

Substituting these values into the formula:

$4500 / (1 + (0.07 5)) = Present Value

$4500 / (1 + 0.35) equals the present value.

Present Value = $4500 / 1.35

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The present value that must be invested now in order to have $4500 for a home-entertainment center in 5 years at an interest rate of 7.0% is approximately $3333.33

Using the formula for calculating the future value of a single sum:

Future Value (FV) = Present Value (PV) + (PV * Interest Rate * Time)

We rearrange the formula to solve for the present value (PV):

PV = FV / (1 + Interest Rate * Time)

Plugging in the given values:

FV = $4500

Interest Rate = 7.0% = 0.07

Time = 5 years

PV = $4500 / (1 + 0.07 * 5)

PV = $4500 / (1 + 0.35)

PV = $4500 / 1.35

PV ≈ $3333.33

Therefore, the present value that must be invested now in order to have $4500 for a home-entertainment center in 5 years at an interest rate of 7.0% is approximately $3333.33 (rounded up to the nearest cent).

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Answer:

15.36

Step-by-step explanation:

192*0.02*4= 15.36

Ki traveled at an average speed of approximately 41.05 miles per hour without any stops.

To calculate the average speed at which Ki traveled from Memphis to Atlanta, we can use the formula:

Average Speed = Total Distance / Total Time

First, let's calculate the total time taken for the journey. Ki started from Memphis at 5:30 am and arrived in Atlanta at 3:00 pm, which is a total of 9.5 hours.

Next, we divide the total distance traveled, which is 391 miles, by the total time taken, which is 9.5 hours:

Average Speed = 391 miles / 9.5 hours

Calculating this, we find that Ki's average speed was approximately:

Average Speed ≈ 41.05 miles per hour

Therefore, Ki traveled at an average speed of approximately 41.05 miles per hour without any stops.

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Answer:

Step-by-step explanation:

9 is dependent 6 is independent

The value of x for which the two lines are parallel is given as follows:

x = 60º.

We have two parallel lines that are cut by a transversal, and the two angles are between the parallel lines and on the same side of the transversal, meaning that they are consecutive interior angles.

Consecutive interior angles are supplementary, meaning that the sum of their measures is of 180º, hence the value of x can be found as follows:

x + 2x = 180

3x = 180º

x = 180º/3

x = 60º.

The figure is given by the image presented at the end of the answer.

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The expression to calculate the profit be,

⇒ P(x) = -2x² - 15x + 4,000

To calculate the profit of the company in a month,

we need to subtract the expenses from the revenue.

The profit equation (P) for the company in a month can be represented as,

⇒ P(x) = R(x) - E(x)

Substituting the given revenue and expense equations, we get,

⇒ P(x) = (5,000 - 2x²) - (15x + 1,000)

Simplifying the equation, we get,

⇒ P(x) = -2x² - 15x + 4,000

Therefore,

The profit of the company in a month can be calculated using the above equation,

where x represents the number of units sold or any other relevant variable.

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While these examples demonstrate some practical applications, divisibility rules are primarily mathematical tools that assist in simplifying calculations, verifying results, and understanding number properties.

Divisibility rules can be applied in various real-life scenarios, particularly in mathematics, finance, and everyday calculations. Here are a few examples:

Checking for even or odd numbers: The divisibility rule for 2 states that a number is divisible by 2 if its last digit is even (0, 2, 4, 6, or 8). This rule can be helpful when determining if a given quantity or count is even or odd. For example, in inventory management, you can quickly estimate the number of items in a collection by checking the parity of the count.

Divisibility by 3: The divisibility rule for 3 states that a number is divisible by 3 if the sum of its digits is divisible by 3. This rule can be useful when dealing with numbers or quantities that need to be evenly distributed or divided.

Divisibility by 9: The divisibility rule for 9 states that a number is divisible by 9 if the sum of its digits is divisible by 9. This rule can be applied in various financial calculations, such as checking if a large number is divisible by 9 to verify the accuracy of calculations involving money, invoices, or balances.

Divisibility by 10: The divisibility rule for 10 states that a number is divisible by 10 if its last digit is 0. This rule is often used in practical situations like determining if a given quantity can be divided evenly into groups of 10 or used in financial transactions involving rounding to the nearest multiple of 10.

Checking prime numbers: Divisibility rules can also help in determining whether a number is prime. For example, the rule that states a number is not divisible by any number greater than its square root can be used to quickly eliminate potential factors when checking for primality.

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Let's assume David's average speed is S km/h.

A) To find David's average speed, we can use the formula: Speed = Distance / Time.

David completed the race in 5 hours, so his speed is S km/h. Therefore, we have:

S = Distance / 5

B) Ken's average speed is 9.8 km/h less than David's average speed, which means Ken's average speed is (S - 9.8) km/h.

Ken took 7 hours to complete the race, so we have:

S - 9.8 = Distance / 7

Now, we can solve the system of equations to find the values of S and Distance.

From equation (1): S = Distance / 5

Substitute this into equation (2):

Distance / 5 - 9.8 = Distance / 7

Multiply both sides of the equation by 35 to eliminate the denominators:

7 * Distance - 35 * 9.8 = 5 * Distance

7 * Distance - 343 = 5 * Distance

Subtract 5 * Distance from both sides:

2 * Distance - 343 = 0

Add 343 to both sides:

2 * Distance = 343

Divide both sides by 2:

Distance = 343 / 2 = 171.5 km

Therefore, the distance of the cycling race is 171.5 kilometers.

To find David's average speed, substitute the distance into equation (1):

S = Distance / 5 = 171.5 / 5 = 34.3 km/h

So, David's average speed was 34.3 km/h.[tex][/tex]

Answer:

A) 34.3 km/h

B) 171.5 km

Step-by-step explanation:

Since Ken's average speed is said to be 9.8km/h less than David's average speed, and we know that Ken's average speed is dependent on him traveling for 7 hours, then we have our equation to get the distance of the cycling race:

[tex]\text{Ken's Avg. Speed}=\text{David's Avg. Speed}\,-\,9.8\\\\\frac{\text{Distance}}{7}=\frac{\text{Distance}}{5}-9.8\\\\\frac{5(\text{Distance})}{7}=\text{Distance}-49\\\\5(\text{Distance})=7(\text{Distance})-343\\\\-2(\text{Distance})=-343\\\\\text{Distance}=171.5\text{ km}[/tex]

This distance for the cycling race can now be used to determine David's average speed:

[tex]\text{David's Avg. Speed}=\frac{\text{Distance}}{5}=\frac{171.5}{5}=34.3\text{ km/h}[/tex]

Therefore, David's average speed was 34.3 km/h and the distance of the cycling race was 171.5 km.

I can guide you on how to perform the dilation with a scale factor of 3 for the figure.

To perform a dilation with a scale factor of 3, you would multiply the coordinates of each point of the original figure by 3. This will result in the figure being enlarged by a factor of 3.

Let's assume the coordinates of the original figure ABCDEFGH are as follows:

A: (1, 1)

B: (4, 1)

C: (4, 4)

D: (1, 4)

E: (2, 2)

F: (3, 2)

G: (3, 3)

H: (2, 3)

To obtain the image of the figure after dilation with a scale factor of 3, multiply each coordinate by 3:

A': (3, 3)

B': (12, 3)

C': (12, 12)

D': (3, 12)

E': (6, 6)

F': (9, 6)

G': (9, 9)

H': (6, 9)

These new coordinates (A', B', C', D', E', F', G', H') represent the image of figure ABCDEFGH after the dilation with a scale factor of 3. You can plot these new coordinates on a graph or use a drawing tool to visualize the enlarged figure.

Using calculator, the quadratic regression function that models the data is

f(x) = -290.6x² + 7127.4x - 43447.5.

the profit ≈  582.43

To find the profit for a selling price of $18.75, we substitute x = 18.75 into the equation.

f(18.75) = -147.30(18.75)² + 3231.00(18.75) - 8213.66

= -147.30 x 351.5625 + 60581.25  - 8213.66

=582.43375

f(18.75) ≈ 582.43

Therefore, the profit for a selling price of $18.75 is approximately $ 582.43

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The solutions to the trigonometric equation in this problem are given as follows:

Two angles are said to be complementary angles when the sum of their measures is of 90º.

For complementary angles, we have that the sine of one of the angles is the cosine of the other angle, hence in this problem we have that 2θ and θ are complementary angles.

Then the value of θ is obtained as follows:

2θ + θ = 90

3θ = 90

θ = 30º.

θ = π/6.

The equivalent angles, which are also solutions to the equation, are given as follows:

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The value of x is equal to 4 units.

In Mathematics, the midpoint of a line segment with two end points can be calculated by adding each end point on a line segment together and then divide by two (2).

Since H is the midpoint of line segment GI, we can logically deduce the following relationship:

Line segment GI = Line segment GH + Line segment HI

Line segment GH = Line segment HI

By substituting the given line segments into the equation above, we have the following:

4x - 6 = 2x + 2

4x - 2x = 6 + 2

2x = 8

x = 8/2

x = 4 units.

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Answer:

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

Let d be the number of dimes and q be the number of quarters.

We can set up two equations based on the information given:

Use substitution here:

So he has 5 quarters.

We can plug that back into either equation to find the number of dimes:

So he has 9 dimes and 5 quarters.

Answer:

C=62.8

Step-by-step explanation:

1) In the formula C=πd, d represents the diameter, which is 20 inches. All you need to do is apply 20 into the equation and you get C=π20.

2) They said to use 3.14 instead of pi, so we are going to multiply 20*3.14, which is 62.8.

[tex]\theta =\cfrac{14}{3}\pi \implies \theta =\cfrac{14\pi }{3}\implies \theta =\cfrac{6\pi +6\pi +2\pi }{3} \\\\\\ \theta =\cfrac{6\pi }{3}+\cfrac{6\pi }{3}+\cfrac{2\pi }{3}\implies \theta =2\pi +2\pi +\cfrac{2\pi }{3}[/tex]

so if we take a look at that, we can say that the angle θ does two revolutions and then it lands on 2π/3, so the terminal point of it is the same as 2π/3's, and if you check your Unit Circle, as you should have one

[tex]\sin(\theta )=\cfrac{\sqrt{3}}{2}\hspace{5em}\cos(\theta )=-\cfrac{1}{2}[/tex]

Answer:

sin∅ = √3/2

cos∅ = -1/2

Step-by-step explanation:

Notice that 14π/3 is just under 3π, so the reference angle made with the negative x-axis is π/3. Since sin(π/3) = √3/2, then sin(14π/3) is also √3/2.

cos(14π/3) works somewhat similarly. Since cos(π/3) = 0.5, and cos(14π/3) would be located in Quadrant II where the negative axis is, then cos(14π/3) = -0.5

The angle formed is 91.84° which can be obtained using Cosine Rule since all the three sides are given.

CosC = (a²+b²-c²) /2(ab)

a = 31

b = 42

c = 53

Substituting the values into the relation

CosC = (31² + 42² - 53²) / 2(31×42)

CosC = - 84 / 2604

CosC = −0.032258

C =

[tex]C = {cos}^{ - 1} (- 0.03225)[/tex]

C = 91.84°

Hence, the angle formed is 91.84°

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Answer:

  (d)  (0, 0), (0, 9), (9, 0)

Step-by-step explanation:

You want to know the vertices represented by the matrix 3T, where ...

  [tex]T=\left[\begin{array}{ccc}0&0&3\\0&3&0\end{array}\right][/tex]

The scaled matrix 3T is found by multiplying each element by the scale factor:

  [tex]3T=\left[\begin{array}{ccc}0&0&9\\0&9&0\end{array}\right][/tex]

Each column is an (x, y) pair representing a vertex. The vertices of the scaled triangle are ...

  (0, 0), (0, 9), (9, 0)

<95141404393>

In the ellipse shown below, each point marked with a dot is called a(n)  focus

In an ellipse, the focus (plural: foci) is a pair of special points that play a significant role in defining the shape of the ellipse. The focus points are located inside the ellipse along the major axis, which is the longer axis of the ellipse.

The defining property of an ellipse is that the sum of the distances from any point on the ellipse to the two foci is constant. This property is known as the "focus-directrix property."

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Answer:

x = 6 , y = 4

Step-by-step explanation:

for the figure to be a parallelogram , the opposite sides must be congruent, that is

5y = 20 ( divide both sides by 5 )

y = 4

and

2(x + y - 1) = x + 3y ← distribute parenthesis on left side by 2

2x + 2y - 2 = x + 3y ← substitute y = 4

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

2x + 8 - 2 = x + 12

2x + 6 = x + 12 ( subtract x from both sides )

x + 6 = 12 ( subtract 6 from both sides )

x = 6