Please HELP! I'll DO ANYTHING!!!!

The requried value of the expression [tex]\sum_{n=11}^{30}n-\sum_{n=1}^{10}n[/tex] is 355.

Simplification involves applying rules of arithmetic and algebra to remove unnecessary terms, factors, or operations from an expression.

Here,
To evaluate the expression:

[tex]\sum_{n=11}^{30}n-\sum_{n=1}^{10}n[/tex]

we can first simplify each summation separately and then subtract the second summation from the first.

[tex]\sum_{n=11}^{30}n[/tex]= 11 + 12 + 13 + ... + 29 + 30

We can use the formula for the sum of an arithmetic series to simplify this expression:

S = (n/2)(a + l)

In this case, a = 11, l = 30, and n = 20 (since we're summing 20 terms).

So, we have:

S = (20/2)(11 + 30)

S= 410

Similarly,

[tex]\sum_{n=1}^{10}n[/tex] = 1 + 2 + 3 + ... + 9 + 10

S = 55

Finally, we can subtract the second summation from the first:

= 410 - 55 = 355

Therefore, the value of the expression is 355.

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Answer:

Step-by-step explanation:

W = w

L = 3w

H = w+4

Now V = LHW

          = (3w)(w+4)(w)

         = (3w²+12w)(w)

        = 3w³+12w²

Answer:

1/4

Step-by-step explanation:

Fractions have two parts, the numerator and the denominator. The denominator is the bottom number and it tells us what unit of fraction we are working with (ie: it denotes fourths, halves, etc.)

Hope it helps! :D

Claire will be 20 years old in 16 years. To solve this problem, we use algebra.

Let's represent Claire's current age with the variable x. According to the problem, in 8 years, Claire will be three times her current age. We can write this as an equation:

x + 8 = 3x
Next, we can rearrange the equation to solve for x:

8 = 2x
x = 4
This means that Claire is currently 4 years old. To find out when she will be 20 years old, we can subtract her current age from 20:

20 - 4 = 16

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Answer:

See below.

Step-by-step explanation:

This is the correct formula for simple interest, but be careful with the numbers.

a = 6 000(1 + 0. 028t)

0.028 means 2.8% interest rate.

For 2.9% interest rate it should be

a = 6 000(1 + 0. 029t)

The polygon with an interior angle

sum of 1080° is an octagon, or

polygon with 8 sides.

We are given that the interior angle

sum of our polygon is 1080°. We also

know that the sum of the interior

angle of any polygon with "n" sides is

given by the formula (n - 2) × 180°.

Therefore, to determine the number

of sides that our polygon has, we set

this formula equal to 1080°, and solve

for "n".

Divide both sides of the equation by

180°.

Add 2 to both sides of the equation.

We get that our polygon has 8 sides,

and the name of a polygon with 8 sides

is an octagon. Therefore, the polygon

that has an interior angle sum of 1080°

is an octagon, or an 8 sided polygon.

Answer:

The possible number of hours Yolanda could rent the boat is 6 hours. I hope this isn't too late, and it's not incorrect lol

Step-by-step explanation:

7t - 3 ≤ 39

*We add 3 to both sides, which will cancel out the 3.*

7t ≤ 42

*We divide 42 by 7 to isolate the variable*

t ≤ 6

(5g^(2)+6g-10)-(2g^(2)+2g+9) = 3g^(2) + 4g - 19

To subtract the two polynomials, we will use the vertical form. This means that we will line up the like terms and subtract them.

Step 1: Line up the like terms in the vertical form.

5g^(2) + 6g - 10

- (2g^(2) + 2g + 9)

Step 2: Distribute the negative sign to each term in the second polynomial.

5g^(2) + 6g - 10

- 2g^(2) - 2g - 9

Step 3: Subtract the like terms.

5g^(2) - 2g^(2) = 3g^(2)

6g - 2g = 4g

-10 - 9 = -19

Step 4: Write the final answer.

3g^(2) + 4g - 19

Therefore, the answer is 3g^(2) + 4g - 19.

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The coordinates of the centroid (,)(△) of triangle ABC are (-1, 8/3).

To find the coordinates of the centroid, we can use the formula:

(x, y) = ((x1 + x2 + x3)/3, (y1 + y2 + y3)/3)

where (x1, y1), (x2, y2), and (x3, y3) are the coordinates of the vertices A, B, and C, respectively.

Plugging in the coordinates of A (0, 4), B (0, 2), and C (-3, 2), we get:

(x, y) = ((0 + 0 - 3)/3, (4 + 2 + 2)/3) = (-1, 8/3)

In a two-dimensional plane, the centroid of a triangle is the point where the three medians of the triangle intersect. A median is a line segment drawn from a vertex of the triangle to the midpoint of the opposite side. The centroid divides each median into two segments, with the ratio of the length of the segment closer to the vertex to the length of the segment closer to the opposite side being 2:1.

In a three-dimensional space, the centroid of a solid can be found by dividing the solid into smaller parts, finding the centroid of each part, and then averaging them. The centroid of a solid is the point where the lines connecting the centroids of each part intersect.

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Complete Question: -

Give the coordinates of the centroid of triangle ABC, which is denoted by (,)(△) and is the point where the medians of the triangle intersect for a (0 , 4) , b (0 ,2) , and C  (-3 ,2 ).

The graph of this function is a sine curve with amplitude 3√2 and phase shift π/4.

The k cos(ϕ) would be 3 and k sin(ϕ) would be 3.

The combined sound is given by:

f(t) = f1(t) + f2(t)

f(t) = 3 sin(t) + 3 cos(t)

To find k and ϕ, we can use the following trigonometric identity:

k sin(t + ϕ) = k sin(t) cos(ϕ) + k cos(t) sin(ϕ)

Comparing this with the equation for f(t), we can see that:

k cos(ϕ) = 3

k sin(ϕ) = 3

Squaring both equations and adding them gives:

k^2 = 3^2 + 3^2 = 18

k = √18 = 3√2

Dividing the two equations gives:

tan(ϕ) = 3/3 = 1

ϕ = π/4

Therefore, the combined sound has the form:

f(t) = 3√2 sin(t + π/4)

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McKenzie would take 6 hours to complete the landscaping job alone if Lindy calls in sick.

If McKenzie and Lindy can complete the landscaping job in 4 hours working together, it means their combined work rate is 1/4 of the job per hour. Let x be the number of hours it takes Lindy to complete the job alone, then McKenzie can complete the job in x-6 hours.

Using the formula for their individual work rates, we have:

[tex]1/x + 1/(x-6) = 1/4[/tex]

Multiplying both sides by [tex]4x(x-6)[/tex], we get:

[tex]4(x-6) + 4x = x(x-6)[/tex]

Expanding and simplifying, we get:

[tex]2x^2 - 12x - 48 = 0[/tex]

Dividing both sides by 2 and using the quadratic formula, we get:

[tex]x = (12 ± \sqrt{12^2 + 4248}) / (2*2)[/tex]

x = (12 ± 18) / 4

x = 7.5 or -1.5

Since we cannot have a negative time, the answer is that it would take Lindy 7.5 hours to complete the job alone, and McKenzie would take 1.5 hours less, or 6 hours, to complete the job alone if Lindy calls in sick.

Therefore, McKenzie would take 6 hours to complete the landscaping job alone if Lindy calls in sick.

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The man has 7 shirts in total, so he can take 3 of those shirts on his 3-day trip without repetition. This means that he can make 7 different combinations of shirts, since each shirt has only one choice. For example, he could take shirts A, B, and C; or he could take shirts D, E, and F; or he could take shirts G, A, and B. In total, he has 7 different combinations of shirts to choose from.
The number of combinations of shirts that the man can take without repetition can be found using the formula for combinations, which is:
C(n, r) = n! / (r! * (n-r)!)

In this case, n = 7 (the total number of shirts) and r = 3 (the number of shirts he will take with him).

Plugging in these values into the formula, we get:

C(7, 3) = 7! / (3! * (7-3)!)

C(7, 3) = 7! / (3! * 4!)

C(7, 3) = 5040 / (6 * 24)

C(7, 3) = 5040 / 144

C(7, 3) = 35

Therefore, the man can take 35 different combinations of shirts without repetition.

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Answer:

24,000, 36

Step-by-step explanation:

it is literally x100

Go figure.

Answer:

y = -1/35x + 71/35

Step-by-step explanation:

slope of the perpendicular line = -1/35  (the negative reciprocal of 35)

use the point (1,2) and the point-slope form:

y - 2 = -1/35(x - 1)  now put it in slope-intercept form

y = -1/35x + 1/35 + 2

y = -1/35x + 71/35

0r,  y = -1/35(x - 71)

The equation of the line perpendicular to y = 35x − 4 and passing through the point (1, 2) is y = (-1/35)x + 71/35.

To find the equation of the line perpendicular to y = 35x − 4 and passing through the point (1, 2), we need to follow these steps:

y - 2 = (-1/35)(x - 1)

y - 2 = (-1/35)x + 1/35
y = (-1/35)x + 1/35 + 2
y = (-1/35)x + 71/35

So, the equation of the line perpendicular to y = 35x − 4 and passing through the point (1, 2) is y = (-1/35)x + 71/35.

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We want to graph a number line and graph some locations on it, the graph can be seen at the end of the answer.

A number line is just a line with equidistant marks on it, that can be used to find the distance between numbers, so to graph the number line we just graph a line and do marks on it.

The north will be referred to as the right side of a number line that is positive, and the south will be the opposite.

Now let's complete the graph:

a) We want to graph the truck stop; we can do this at the zero of the number line.

b) 5 miles up north of the truck stop.

Here, if each mark represents a mile, we just mark a point that is 5 marks at the right of the truck stop.

c) 3.5 miles south of a truck stop, at this location.

Here we mark a point that is at 3 and a half marks at the left of the truck stop.

The graph can be seen below.

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If f(x)=2x+1 and g(x)=x^2 +5, the value of  g(f(2)) = 30.

The question is asking to evaluate the composition of the two functions, g(f(2)). This means that first the innermost function, f(2), needs to be evaluated, and the result substituted in place of f(2) in the expression for g(f(2)).

First, evaluating f(2) yields f(2) = 2*2 + 1 = 5. Then, substituting 5 in place of f(2) in the expression for g(f(2)) yields g(f(2)) = g(5) = 5^2 + 5 = 30.

Therefore, the answer to the question is g(f(2)) = 30.

A composite function is a function evaluated on another function.

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The 42 grams of aluminum implies that the chemist has 0.06429ml of aluminum

The density of material shows the denseness of that material in a specific given area. A material’s density is defined as its mass per unit volume. Density is essentially a measurement of how tightly matter is packed together. It is a unique physical property of a particular object. The principle of density was discovered by the Greek scientist Archimedes. It is easy to calculate density if you know the formula and understand the related units The symbol ρ represents density or it can also be represented by the letter D.

How to determine the amount of aluminum?

The mass is given as:  Mass = 42 grams

The density of aluminum is: Density = 2.7 g/cm³

So, we have: Volume = Density/Mass

This gives, Volume = 2.7/42

Evaluate : Volume = 0.06429cm³

Convert to ml

Volume = 0.06429ml

Hence, the chemist has 0.06429ml of aluminum

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The number of stamps given for the books in question are :

To find the number of stamps needed for 1 book, the formula is :

= Stamps needed for 19 books / Number of books

= 380 / 19

= 20 stamps

For 7 books :

= 7 books x 20 stamps per book

= 140 stamps

For 12 books :

= 12 books x 20 stamps per book

= 240 stamps

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The system of inequalities is correctly graphed on Shannon's graph.

Here we have the following system of inequalities:

y ≥ (1/2)*x - 1

x - y > 1

We can rewrite the second inequality as:

y < x - 1

Then the system becoimes:

y ≥ (1/2)*x - 1

y < x - 1

The first line will be one with positive slope, it is solid (due to the symbol ≥) and the shaded area is above the line.

For the second we will have a dashed line, and now the shaded area is below the dashed line.

From that, we caonclude that Shannon's graph is the correct one.

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If Colin wants to make 2 batches of Lavender soap and 2 batches of Vanilla soap, then he will need $9.57 for the oils

Here, Colin needs 1.5 ounces of Scented oil to make a batch of soap.

He wants to make 2 batches of Lavender soap and 2 batches of vanilla soap.

So, the amount of scented oil for 2 batches would be:

1.5 × 2 = 3 ounces

The cost of an ounce of Lavender oil is $1.54

So, using unitary method the cost of oil for the 2 batches of Lavender soap would be:

C₁ = 3 × 1.54

C₁ = 4.62 dollars

The cost of an ounce of Vanilla oil is $1.65

So,  using unitary method the cost of oil for the 2 batches of Vanilla soap would be:

C₁ = 3 × 1.65

C₁ = 4.95 dollars

Thus, the total cost would be,

C = C + C

C = 4.62 + 4.95

C = 9.57 dollars

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The midpoint of the line segment whose endpoints are the given points is (8.1 , -21.7).

To find the exact distance between the points (9.6,-19.7) and (6.6,-23.7), we can use the distance formula:

distance = sqrt((x2 - x1)^2 + (y2 - y1)^2)

Substituting the given values:

distance = sqrt((6.6 - 9.6)^2 + (-23.7 - (-19.7))^2)

Simplifying:

distance = sqrt((-3)^2 + (-4)^2)

distance = sqrt(9 + 16)

distance = sqrt(25)

distance = 5

Therefore, the exact distance between the points is 5.

To find the midpoint of the line segment whose endpoints are the given points, we can use the midpoint formula:

midpoint = ((x1 + x2)/2 , (y1 + y2)/2)

Substituting the given values:

midpoint = ((9.6 + 6.6)/2 , (-19.7 + (-23.7))/2)

Simplifying:

midpoint = (16.2/2 , -43.4/2)

midpoint = (8.1 , -21.7)

Therefore, the midpoint of the line segment whose endpoints are the given points is (8.1 , -21.7).

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Answer:$72 Total

Step-by-step explanation:

20%=1/5

1/5 + 5/5(total) = 6/5

60 * 6/5 = $72

Debra's two area baking plates are 17 square inches different in size.

The area surrounding a shape forms its perimeter. Area is a unit of measurement for interior space. Surface area is a measurement of a solid shape's exposed surface, whereas area is a two-dimensional measurement of the size of a flat surface (three-dimensional).

The square baking dish has the following surface area with an 8-inch side length:

Area of first square = (side length)² = 8² = 64 square inches

Similarly, the surface area of a square baking dish with 9-inch sides is:

Area of second square = (side length)² = 9² = 81 square inches

Difference in area = |Area of second square - Area of first square|

Difference in area = |81 - 64|

Difference in area = 17 square inches

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hi, attached is the answer

Hope this helps:)

The most accurate comparison is that a gamma ray has more energy than a radio wave because it has a shorter wavelength and higher frequency.

The most energetic and high frequency particles are gamma rays. On the other side, radio waves are the EM radiation types with the lowest energies, longest wavelengths, and lowest frequencies.

All electromagnetic radiation travels in a vacuum at the speed of light (c), which is the same for all electromagnetic radiation types, including microwaves, visible light, and gamma rays.

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Yes, the binomial 2x+3 is a factor of the given polynomial P(x)=2x^(3)+3x^(2)-2x-3. We can verify this by using synthetic division.

First, we need to find the zero of the binomial, which is -3/2. Then, we can use synthetic division to divide the polynomial by the binomial.

Here are the steps for synthetic division:

1. Write the coefficients of the polynomial in a row: 2  3  -2  -3
2. Write the zero of the binomial to the left of the row: -3/2 | 2  3  -2  -3
3. Bring down the first coefficient: -3/2 | 2  3  -2  -3
               0  -3   6  -6
               ---------------
               2  0   4   -9
4. Multiply the zero by the first coefficient and write the result below the second coefficient: -3/2 * 2 = -3
5. Add the second coefficient and the result: 3 + (-3) = 0
6. Repeat steps 4 and 5 for the remaining coefficients: -3/2 * 0 = 0, -2 + 0 = -2; -3/2 * -2 = 3, -3 + 3 = 0
7. The final row of numbers represents the coefficients of the quotient: 2x^(2) + 0x + 4, with a remainder of -9.

Since the remainder is not zero, the binomial is not a factor of the polynomial. However, if we divide the polynomial by the binomial using long division, we get the following:

2x^(2) + 4 - (9/(2x+3))

This means that the polynomial can be written as: P(x) = (2x+3)(2x^(2) + 4) - 9

So, the binomial 2x+3 is a factor of the polynomial P(x)=2x^(3)+3x^(2)-2x-3.

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The Finance Charge for the Delgados obtained for an instrument is $1200 to repay the loan in 12 months.

The given data is as follows:

Instrument loan =  $12,000

Loan at APR = 10%

Number of months = 12 Months

The finance charge is calculated by using the formula,

Finance charge = Loan amount x APR x No' of months to repayment / No' of months in a year

Finance charge  = ($12,000 x 10% x 12) / 12

Finance charge = 14400 / 12

Finance charge = $ 1200

Therefore we can conclude that the Finance charge for the Delgados obtained for an instrument is $1200.

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Answer:

Please review the trigonometric proof below

Step-by-step explanation:

Given

[tex]\csc x -\sin x=\cos x \cot x[/tex]

Apply the reciprocal identity to [tex]\csc x[/tex].

[tex]\frac{1}{\sin x} -\sin x=\cos x \cot x[/tex]

Write [tex]-\sin x[/tex] as a fraction then multiply by [tex]\frac{\sin x}{\sin x}[/tex].

[tex]\frac{1}{\sin x} + \frac{-\sin x}{1} =\cos x \cot x[/tex]

[tex]\frac{1}{\sin x} + \frac{-\sin x}{1} *\frac{\sin x}{\sin x}=\cos x \cot x[/tex]

[tex]\frac{1}{\sin x} + \frac{-\sin x\sin x}{\sin x}=\cos x \cot x[/tex]

Combine the numerators over the common denominator.

[tex]\frac{1-\sin x\sin x}{\sin x}=\cos x \cot x[/tex]

Multiply [tex]\sin x[/tex] by [tex]\sin x[/tex].

[tex]\frac{1-\sin^2 x}{\sin x}=\cos x \cot x[/tex]

Apply the Pythagorean identity [tex]1-\sin^2 x=\cos^2 x[/tex]

[tex]\frac{\cos^2 x}{\sin x}=\cos x \cot x[/tex]

Factor [tex]\cos x[/tex] out of [tex]\cos^2 x[/tex].

[tex]\frac{\cos x\cos x}{\sin x}=\cos x \cot x[/tex]

Separate into two fractions.

[tex]\frac{\cos x}{1} *\frac{\cos x}{\sin x}=\cos x \cot x[/tex]

Apply the quotient identity [tex]\frac{\cos x}{\sin x}=\cot x[/tex].

[tex]\frac{\cos x}{1} *\cot x=\cos x \cot x[/tex]

Anything over 1 is just itself.

[tex]\cos x\cot x=\cos x \cot x[/tex]

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, = space

Answer:

csc x − sin x

= [tex]\frac{1}{sin, x}[/tex] - sin x

= [tex]\frac{1 - sin^{2}, x }{sin, x}[/tex]

= [tex]\frac{cos^{2}, x }{sin, x}[/tex]

= [tex]\frac{cos, x}{sin, x}[/tex] * cos x

= cot x cos x

∴csc x - sin x - cot x cos xQED

It is the most " explanation " I can think of.

Thus the answer is shown above..

Answer:

3.5 * 10²

Step-by-step explanation:

In standard form, the number before the point has to be less than ten so

0.035 = 3.5 *10²