IVan charges an hourly rate for a moving team to load and unload a truck. The charge is a different


hourly rate for a team to pack and unpack boxes. For 8 hours of loading and unloading and 6 hours of


packing and unpacking the company charges $890. For 5 hours of loading and unloading and 3 hours of


packing and unpacking the company charges $515. Write a system of equations and then determine the


company's hourly rates?

Caleb has 30 quarters.

What is arithmetic?

Mathematical arithmetic is the study of the properties of the standard operations on numbers, such as addition, subtraction, multiplication, division, exponentiation, and root extraction.

Here, we have

Given: Caleb has 51 coins (nickels, dimes, and quarters) in a jar, totaling $9. He has three more nickels than dimes.

We have to find out how many quarters Caleb has.

Let x be nickel,

y be dimes and

z be quarters

x + y + z = 51.....(1)

1 quartes = 25 cents

1 dimes = 10 cents

1 nickel = 5 cents

Now, the total dollar is $9,

5x/100 + 10y/100 + 25z/100 = 9

5x + 10y + 25z = 900

x + 2y + 5z = 180....(2)

and

y + 3 = x...(3)

Solving equation(1) and (2), we get

From (1)

x + x-3 + z = 51

2x + z = 54....(4)

From (2)

x + 2(x -3) + 5z = 180

3x + 5z = 186...(5)

Now, by solving equations (4) and (5), we get

x = 12

z = 30

Now,

y + 3 = x

y + 3 = 12

y = 9

Hence, Caleb has 30 quarters.

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The coordinates of point P along the directed line segment AB with a ratio of 1:4 are (-5, -2).

Since the ratio of AP to PB is 1:4, we can use the midpoint formula to find the coordinates of point A. The midpoint formula is

((x₁ + x₂)/2, (y₁ + y₂)/2)

Plugging in the coordinates of points P and B, we get:

((4(-7) - 2)/5, (4(-5) + 0)/5) = (-30/5, -20/5) = (-6, -4)

we can use the point-slope formula to find the equation of the line segment AB:

(y - (-4)) = (1/5)(x - (-6))

Simplifying this equation, we get:

y = (1/5)x + 2

Finally, we can use the given ratio of 1:4 to find the coordinates of point P. Since the ratio of AP to PB is 1:4, we can use the ratio formula to find the coordinates of point P:

(x, y) = (4(-5) + (-2))/5, (4(-2) - (-4))/5) = (-30/5, 12/5) = (-6, 2.4)

Rounding off to one decimal place, we get the coordinates of point P as (-5, -2).

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The probability of a randomly selected tire from this sample having a lifespan greater than 45,000 miles is approximately 0.0639 or 6.39%.

We can use the central limit theorem to approximate the distribution of the sample mean.

In this case, the population mean is 44,000 miles and the population standard deviation is 7,650 miles. We are taking a sample of 120 tires, so the standard deviation of the sample mean is:

σ/√n = 7,650/√120 = 698.68

To find the probability that the sample mean will be longer than 45,000 miles, we need to standardize the sample mean using the formula:

z = (x - μ) / (σ / √n)

where x is the sample mean, μ is the population mean, σ is the population standard deviation, and n is the sample size.

Plugging in the values, we get:

z = (45,000 - 44,000) / (7,650 / √120) = 1.527

We can then look up the probability corresponding to a z-score of 1.527 in a standard normal distribution table or using a calculator. The probability of a randomly selected tire from this sample having a lifespan greater than 45,000 miles is approximately 0.0639 or 6.39%.

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The answer of addition is 94.

The phrase "the addition" refers to combining two or more numbers. Adding two numbers is indicated by the plus sign (+), therefore adding three is written as three plus three.

To add 8 and 78, we can start by adding the ones place digits, which are 8 and 7.

8 + 7 = 15

Since 15 is greater than 10, we need to regroup 10 ones as 1 ten and carry it over to the tens place. We can represent this with place value blocks by moving a rod of 10 ones from the ones place to the tens place.

So we have:

 8

+78

---

```

 8

+78

---

 16 (write 6 in the ones place and carry 1 to the tens place)

```

Now we can add the tens place digits, which are 1 (carried over) and 8:

1 + 8 = 9

So the final result is:

 8

+78

-----

86

Therefore, 8 plus 78, plus 7 is:

```

 8

+78

+ 7

---

 94

```

So the answer of addition is 94.

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The approximate amount of Hot Asphalt Mix needed to pave the parking lot is 2772 tons. (D)

To calculate the required amount of Hot Asphalt Mix, follow these steps:

1. Convert the dimensions of the parking lot to feet: 100 yards x 3 (feet/yard) = 300 feet and 44 yards x 3 (feet/yard) = 132 feet.
2. Convert the base thickness to feet: 9 inches / 12 (inches/foot) = 0.75 feet.
3. Calculate the volume of the parking lot: 300 feet x 132 feet x 0.75 feet = 29,700 cubic feet.
4. Find the weight of the Hot Asphalt Mix: 29,700 cubic feet x 140 pounds/cubic foot = 4,158,000 pounds.
5. Convert the weight to tons: 4,158,000 pounds / 2000 (pounds/ton) = 2079 tons.

However, the answer options provided do not match the calculated value of 2079 tons. In this case, the closest answer would be option D, 2772 tons.

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The angle of the tops of two vertical poles of heights 20 m and 15 m joined by a taut wire 12 m long slope of the wire = 24.6 °

Height of the 1st vertical pole = 20m

Height of the second vertical pole = 15m

Difference of their height = 5 m

Length of the taut wire = 12m

Using trigonometry ratio of sin we get

Perpendicular = 5 m

Hypotenuse = 12 m

Sin A = Perpendicular/ hypotenuse

Sin A = 5/12

A = [tex]sin^{-1} (5/12)[/tex]

A = 24.6 °

The angle of slope of the wire = 24.6°

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Answer:

2

Step-by-step explanation:

0.50/0.25 = 50/25

= 2

Dividing 0.50/0.25 no. is same as 50/25 when we multultiply by 100/ 100 so it is 2

ans. = 2

0.50 / 0.25

5/10  x  100/5

=2

The amount of time Carl represent is 25-m on the problems.

The statement "Davis spent 25 minutes working on math problems. Carl worked on math problems for m fewer minutes" means that Carl spent some amount of time working on math problems, but that amount is m minutes less than what Davis spent.

To represent the amount of time Carl worked on math problems, we can use the variable X. We know that X is equal to the amount of time Carl worked on math problems, and that X is equal to 25 minus m.

This is because Davis spent 25 minutes on math problems, and Carl worked on them for m fewer minutes. So if we subtract m from 25, we get the amount of time Carl worked on math problems.

Therefore, the equation X = 25 - m represents the amount of time Carl worked on math problems, where X is the amount of time in minutes and m is the number of minutes Carl worked less than Davis.

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.....................

The volume of the rectangular prism is 105 cubic meters.

To find the volume of the rectangular prism, we can use the formula V = lwh, where V is the volume, l is the length, w is the width, and h is the height.

Since there are three pairs of congruent faces, we can deduce that the areas of the three pairs of faces represent the three dimensions of the rectangular prism. The areas are 9, 25, and 49 square meters, which are the squares of the sides' lengths.

Take the square root of each area to find the corresponding side lengths:

√9 = 3 meters
√25 = 5 meters
√49 = 7 meters

Now, apply the formula to find the volume:

V = lwh = 3 × 5 × 7 = 105 cubic meters.

The volume of the rectangular prism is 105 cubic meters.

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The upper and lower bound of the cross-sectional area of the insulation, would be A = [ 3129, 3137 ] cm².

The upper and lower bound of A would be found by the formula :

A = π x ( R ² - r ² )

The upper bound is therefore:

= π x  (( 48. 75 / 2) ² - ( 19.2 45 / 2) ²)

= π x ( 1183. 0625 - 184. 857025 )

= π x 998. 205475

= 3, 137 cm²

The lower bound will then be:

= π x ( ( 48. 65 / 2 ) ²- (19. 255 / 2) ²)

= π x ( 1180. 9225 - 184. 963025)

= π x 995. 959475

= 3, 129 cm²

The interval form is therefore A = [ 3129, 3137 ] cm²

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The statement "the series converges to 31.25" is true about the given series.

Given series is 25 + 5 + 1 + ....

We can clearly see that given series is infinite geometric series.

First term is a=25

common ratio is r = 5/25

= 1/5

We know that the formula of sum of an infinite geometric series is

S = a / (1 - r)

S = 25 / (1 - 1/5)

S = 25/(4/5)

S = (25*5)/4

S = 125/4

S = 31.5

Therefore, the sum of the infinite geometric series is 31.25.

Since, the sum of the series is a finite number, we can say that the series converges.

Therefore, the statement "the series converges to 31.25" is true about the given series.

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Answer:

2(2(3) + 2(5) + 3(5)) = 2(6 + 10 + 15) = 2(31)

= 62

D is the correct answer.

Answer: C

Step-by-step explanation:

Gastronomy is a way of promoting understanding among different cultures, and of bringing people and traditions closer together.

The practise of choosing, preparing, presenting, and consuming exquisite cuisine. The foundation of gastronomy lies in the connections between food, culture, and tradition. Gastronomy has emerged through time as a more potent cultural force than language or other influences among the peoples of the world.

Molecular gastronomy is a relatively recent branch of science that studies the physical and chemical changes that take place during cooking. Molecular cuisine is the name of the new culinary movement based on this emerging discipline.

Nowadays, the world may be broken down into separate gastronomic zones, where different cuisines are popular and similar cooking techniques are used. Throughout much of Southeast Asia, rice is the main food. The abundant and creative use of spices to give meals an extra flavour is what makes Indian and Indonesian cuisine unique. The prevalent ingredient in Mediterranean recipes is olive oil.

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Complete question:

How can gastronomy help us live harmoniously?

Answer:

-17 and -5

Step-by-step explanation:

-5 x -17 = 85

-5 + -17 = -22

Barak should buy the nails from the Hammer Company as it is cheaper than buying from the Nail Company.

Let's first calculate the cost of buying 550 nails from each company:

Nail Company:

Cost of 1 nail = £4.15 + (20% of £4.15) = £4.15 + £0.83 = £4.98 (rounded to 2 decimal places)

Cost of 50 nails = £4.98 x 50 = £249

Cost of 550 nails = £249 x 11 = £2739

Hammer Company:

Cost of 1 nail = £2.95/25 = £0.118 (rounded to 3 decimal places)

Cost of 75 nails (buy 100 get 25 free) = 100 x £0.118 x 3 = £35.40

Cost of 550 nails = 550 x £0.118 = £64.90

Therefore, Barak should buy the nails from the Hammer Company as it is cheaper than buying from the Nail Company.

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Based on the above, Keenan paid $9,420 in federal income tax in 2009.

Let X be the amount Keenan paid in taxes in 2009.

According to the problem, Keenan paid 70% less in 2010 than he did in 2009. This means that he paid only 30% of what he paid in 2009, since 100% - 70% = 30%.

We can express this mathematically as:

0.30X = 2,826

To solve for X, we can divide both sides of the equation by 0.30:

X = 2,826 ÷  0.30

X = 9,420

Therefore, Keenan paid $9,420 in federal income tax in 2009.

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The region bounded by the given curves is a triangle with vertices at (0,0), (1,1), and (1,0). When this region is revolved around the line y=3, we obtain a solid with a hole in the middle.
To find the volume of this solid, we can use the method of cylindrical shells. Imagine slicing the solid into thin cylindrical shells with radius r and height Δy. The volume of each shell is approximately 2πrΔy times the thickness of the shell.

The distance between the axis of rotation (y=3) and the line y=1 is 2 units. Therefore, the radius of each cylindrical shell is r = 3 - y. The height of each shell is Δy = dx, where x is the distance from the y-axis.

To set up the integral, we need to express x in terms of y. Since the region is bounded by y=x and y=1, we have x=y for 0<=y<=1. Therefore, the integral for the volume of the solid is:
V = ∫[0,1] 2π(3-y)x dx
 = 2π ∫[0,1] (3-y)y dx

Evaluating this integral, we get:
V = 2π [3y^2/2 - y^3/3] from 0 to 1
 = 2π (3/2 - 1/3)
 = 2π/3

Therefore, the volume of the solid obtained by rotating the region bounded by y=x, y=1 about y=3 is (2/3)π cubic units.

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James weighs 6084 more pounds than both of his dogs combined.

To find out how many more pounds James weighs than both of his dogs combined, we first need to calculate the total weight of the dogs. Since he has two dogs that weigh 1314 pounds each, we can find the total weight of the dogs by multiplying 1314 by 2, which gives us 2628 pounds.

Next, we can add the weight of both dogs together to get the total weight of the dogs, which is 2628 pounds. We can then subtract the weight of the dogs (2628 pounds) from James' weight (8712 pounds) to find out how many more pounds James weighs than both of his dogs combined.

Therefore, James weighs 6084 more pounds than both of his dogs combined. This can be calculated by subtracting the weight of the dogs (2628 pounds) from James' weight (8712 pounds), which gives us 6084 pounds.

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Statement 2 is false because while the median score of Group A is higher than Group B, it is not 10 points greater as claimed.

Statement 1 is false because the box plots provide limited information, making it impossible to determine whether at least 50% of students in each group scored more than 165 push-ups.

Statement 3 is false because Group A has more variability in push-up scores than Group B, as indicated by the larger interquartile range (IQR) of Group A.

Looking at the box plots, we can see that the median score of Group A is higher than Group B, but it is not 10 points greater. Therefore, statement 2 is False.

We cannot determine whether at least 50% of students in each group scored more than 165 push-ups. The box plots only show us the quartiles and the minimum and maximum values, so we do not know the exact number of students who scored above 165 push-ups. Therefore, statement 1 is False.

The interquartile range (IQR) of Group A is greater than the IQR of Group B, indicating that Group A has more variability in push-up scores than Group B. Therefore, statement 3 is False.

Hence, All the statement are False.

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The volume of the given cone is 402.1 cubic feet if the slant height is 10ft and the length is 6ft.

To calculate the volume of a cone, the formula used is :

V = (1/3) * π * [tex]r^2[/tex] * h

Here, the radius is the unknown term. we need to calculate the radius of the cone. We can use the Pythagorean theorem to find the radius of the cone.

[tex]l^2 = r^2 + h^2[/tex]

[tex]10^2 = r^2 + 6^2[/tex]

[tex]r = \sqrt{(10^2 - 6^2)}[/tex]

radius = 8 ft

V = (1/3) *  π * [tex]r^2[/tex] * h

V = (1/3) * π *[tex]8^2[/tex] * 6

V = (1/3) * π * 384

V =  402.1 cubic feet

Therefore we can infer that the volume of the given cone is  402.1 cubic feet.

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The complete question is:

'Find the volume of this cone. Round to the nearest tenth.

slant height = 10ft

length = 6ft

Answer:

Step-by-step explanation:

Yes , that is correct. The growth factor for the balance in the account at the end of the year is calculated by adding 1 to the annual interest rate, which is expressed as a decimal, and multiplying the result by the balance. This gives the formula:

Ending balance = Beginning balance * (1 + r)

where r is the annual interest rate as a decimal.

Answer: (670 -110)/8

Step-by-step explanation:

Months: 110 the first month

*Now since she paid 670 in total she subtracts the 110 from the first month which is 560, and now there is an event amound paid in the other months so you divide 560 by 8 since 8 months are left over resulting in $70 each month.

January,

February,

March,

April,

May,

June,

July,

August,

[tex]SIGMA an = 1 + 2 + 3 + ... + n = n(n+1)/2 = ∫_1^n f(x)dx = ∫ f(x)dx[/tex]

f(x) = x is indeed a continuous function that satisfies the given condition.

Yes, we can find a continuous function f(x) such that when an = f(n), we have SIGMA an = ∫ f(x)dx.

One such function is f(x) = x.

To see why this works, let's consider a few terms of the series SIGMA an.

When n = 1, we have a1 = f(1) = 1, so the series starts with 1.

When n = 2, we have a2 = f(2) = 2, so the series becomes 1 + 2. When n = 3, we have a3 = f(3) = 3, so the series

becomes 1 + 2 + 3. And so on.

Notice that this series is just the sum of the first n positive integers, which we know is equal to n(n+1)/2.

But if we take the derivative of f(x) = x, we get f'(x) = 1, which means that the integral of f(x) from 1 to n is just n.

So we have:

[tex]∫ f(x)dx = ∫ xdx = 1/2 x^2 + C[/tex]

[tex]∫_1^n f(x)dx = (1/2 n^2 + C) - (1/2 (1)^2 + C) = 1/2 n^2 - 1/2[/tex]

And therefore:

[tex]SIGMA an = 1 + 2 + 3 + ... + n = n(n+1)/2 = ∫_1^n f(x)dx = ∫ f(x)dx[/tex]

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Answer:

Carlos=1.5041

Mykala=2.6991

William=4.1350

Emily=4.1773

The measurements from greatest to least would be ordered as follows:

First, we need to convert all the units to the same unit. Let's convert everything to inches, since that is the smallest unit.

6 yards = 6 x 3 = 18 feet

18 feet = 18 x 12 = 216 inches

2 1/2 feet = 2 x 12 + 6 = 30 inches

So now we have:

6 yards = 216 inches

2 1/2 feet = 30 inches

45 inches = 45 inches

Putting these in order from greatest to least, we have:

216 inches, 45 inches, 30 inches

Therefore, the measurements from greatest to least would be ordered as follows:

6 yards, 45 inches, 2 1/2 feet

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The full question is:
Put the measurements from greatest to least. 45 inches, 6 yards, and 2 1/2 feet

The radius of gyration of the plate about the x-axis is [tex]6 \sqrt{6} / 5[/tex] units.

To find the radius of gyration of a plate covering the region bounded by [tex]y = x^2[/tex], x = 6, and the x-axis with respect to the x-axis, we need to use the formula:

[tex]k_x = \sqrt{(I_x / A)}[/tex]

where [tex]k_x[/tex] is the radius of gyration, [tex]I_x[/tex] is the moment of inertia of the plate about the x-axis, and A is the area of the plate.

We can calculate the area A of the plate as follows:

[tex]A = \int\limits^6_0 { x^2}\, dx\\= [x^3/3]\ from\ 0\ to\ 6\\= 72[/tex]

To find the moment of inertia [tex]I_x[/tex], we can use the formula:

[tex]I_x = \int\ {y^2} \, dA[/tex]

where y is the perpendicular distance of an element of area [tex]dA[/tex] from the x-axis. We can express y in terms of x as y = x². Therefore, we have:

[tex]dA = y dx = x^2 dx\\I_x = \int\limits^6_0 { x^2 (x^2)} dx\\= \int\limits^6_0 {x^4}\, dx\\= [x^5/5]\ from\ 0\ to\ 6\\= 6^5/5[/tex]

Substituting these values into the formula for [tex]k_x[/tex], we get:

[tex]k_x = \sqrt{(I_x / A)}\\= \sqrt{((6^5/5) / 72)}\\= \sqrt{(6^3 / 5)}\\= 6 \sqrt{6} / 5[/tex]

Therefore, the radius of gyration of the plate about the x-axis is [tex]6 \sqrt{6}/ 5[/tex] units.

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The customer purchased 2 small baskets and 6 large baskets.

Let x be the number of small baskets and y be the number of large baskets that the customer purchases.

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

Equation 1: x + y = 8 (The total number of baskets purchased is 8)

Equation 2 3x + 5y = 36:  (The total amount paid for the baskets is $36)

To solve this system, we can use either substitution or elimination method.

Using substitution method:

From Equation 1, we have x = 8 - y.

Substitute this into Equation 2:

3(8 - y) + 5y = 36

24 - 3y + 5y = 36

2y = 12

y = 6

Now, we can substitute y = 6 back into Equation 1 to find x:

x + 6 = 8

x = 2

Therefore, the customer purchased 2 small baskets and 6 large baskets.

Using elimination method:

We can multiply Equation 1 by 3 and subtract it from Equation 2 to eliminate x:

 3x + 5y = 36

- (3x + 3y = 24)

   2y = 12

    y = 6

Now, we can substitute y = 6 back into either Equation 1 or Equation 2 to find x. Let's use Equation 1:

x + 6 = 8

x = 2

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If the cost after the coupon is $21.25 and she decides to add a 20% tip, she will be adding $4.25 for the tip.

Find out how much a 20% tip would be on a cost of $21.25 after applying a coupon.
Identify the total cost after the coupon.
In this case, the cost is $21.25.
Determine the percentage for the tip.
The tip percentage is given as 20%.
Convert the percentage to a decimal.
To do this, divide the percentage by 100. So, 20% divided by 100 is equal to 0.2.
Multiply the total cost by the tip percentage in decimal form.
Now, multiply $21.25 (total cost) by 0.2 (tip percentage as a decimal).
$21.25 x 0.2 = $4.25
Calculate the tip amount.
The tip amount is $4.25.

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