Please help!
Theresa's Book Barn sold $10,347 worth of books during September. In October, their sales were $12,115. How much higher were Theresa's book sales during October than in September? Explain how you got your answer.

Answer: 4 or \(\sqrt{4 * 4}\)

To find the square root of a number, remember that there will be two factors that are the same that will give you the product.

Lets start from 1:

1 x 1 = 1

2 x 2 = 4

3 x 3 = 9

4 x 4 = 16

As you can see, 4 x 4 is 16. To make sure I'm correct, remember that a square roots consists two identical factors.

4 and 4 are the same numbers.

Therefore, \(\sqrt{16}\) = 4

It can also be written as \(\sqrt{4 * 4}\)

Answer:

the answer is 4

Step-by-step explanation:

I use a calulator but if you dont have one then the way to do square roots is find a number say 4 and put it to the 2 power and it equaks 16 (4^2)=16. I cant really explain much more

After w weeks, the expression for the total cost of games is 250 + 4000w.

What is Expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's structure is as follows: Expression: (Math Operator, Number/Variable, Math Operator)

An algebraic expression known as a linear expression has terms that are either constants or variables raised to the first power. Alternatively put, none of the exponents can be greater than 1.

As an illustration, while x is a variable raised to the first power, x2 is a variable raised to the second power. An illustration of a constant is 5.

Linear expressions are what the two expressions are. One variable raised to the power of one makes up a linear expression.

250 + 1000g.

Where: g(w) = 4w.

250 + 1000(4w).

250 + 4000w.

Therefore, number of games produced in w weeks is 250 + 4000w.

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Answer:

8

Explaining :

4/12 is 8

8+4=12

12-4=8

I hope it work :)

Answer:

7×7 = 49

Step-by-step explanation:

7 is a prime number. 7×7= 49 (product of primes)

got it correct edge 2021

The proof that m∠2 = m∠3 in the two column proof table is; shown in the various steps and concludes with subtraction property of equality

We are given;

∠1 and ∠2 are supplements

∠3 and ∠4 are supplements

∠1 ≅ ∠4

Now, since ∠1 and ∠2 are supplements, it means that;

m∠1 + m∠2 = 180° because of the definition of supplementary angles.

Since ∠3 and ∠4 are supplements, it means that;

m∠3 + m∠4 = 180° because of the definition of supplementary angles.

We are told that ∠1 ≅ ∠4

Thus;

m∠1 + m∠2 = m∠3 + m∠1 (Substitution property of equality)

Finally, we can reduce to get;

m∠2 = m∠3 (subtraction property of equality)

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Answer:

$250

Step-by-step explanation:

8=20

12=30

So waht you do is you know that 4 weeks is $10 so 10 / 4 = 2.5 and 2.50 x 100 = 250.

Answer:

On week 100 she has $250.

Step-by-step explanation:

A proportional relation has the form

y = kx

Let x = week number and y = amount of money in the account.

We use one of the known times and mounts to find the value of k.

At week 8 she had $20.00, so for x = 8, y = 20.

y = kx

20 = k * 8

k = 20/8

k = 2.5

The proportional relation is

y = 2.5x

Now for any number of weeks, x, you can find the amount of money, y, using the equation above.

On week 100, x = 100.

y = 2.5x

y = 2.5(100)

y = 250

Answer: On week 100 she has $250.

The theoretical probability of Nadir being chosen as part of the group of four students for the student council is 4/6, which simplifies to 2/3.

To calculate the theoretical probability, we need to determine the number of favorable outcomes (Nadir being chosen) and divide it by the total number of possible outcomes (all combinations of four students out of the six).

First, let's calculate the number of favorable outcomes. Since we want Nadir to be chosen, we can consider Nadir as one of the positions to be filled. This leaves us with three remaining positions to be filled by the remaining five students (Michelle, Olivia, Parvi, Quinn, and Richard). Therefore, the number of favorable outcomes is the number of ways to choose three students out of the five, which is given by the combination formula: 5 choose 3 = 5! / (3! * (5-3)!) = 10.

Next, let's determine the total number of possible outcomes, which is the number of ways to choose four students out of the six. Using the combination formula again, we have 6 choose 4 = 6! / (4! * (6-4)!) = 15.

Finally, we divide the number of favorable outcomes by the total number of possible outcomes: 10 / 15 = 2/3. Therefore, the theoretical probability of Nadir being chosen as part of the group is 2/3.

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In linear equation, 3437.5  feet - lbs is the work done to haul the anchor .

What in mathematics is a linear equation?

An algebraic equation with simply a constant and a first-order (linear) term, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.

                          Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.

Anchor  weighing = 100 lbs

   given 3  lb/ft

  the combined weight  = 3( 25 -y ) + 100

                                 = 175 - 3y

    the workdone on small solution is = (175 - 3y)Δy

                      w = ∫₀²⁵ (175 - 3y) dy

                        = 175[y]²⁵₀- 3/2[y²]²⁵₀

                       = 175 [ 25 - 0 ] - 3/2 [ 25²- 0²]

                       = 3437.5  feet - lbs

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The volume of the octahedron is (Base area ×Height)/3 when two pyramids can be formed from an octahedron, the volume of an octahedron is twice that of a pyramid.

Given that,

An octahedron is made by connecting the centers of the faces of the right rectangular prism in the illustration below.

We have to find what is the octahedron's volume.

The Greek term "Octahedron," which means "8 faces," is the source of the English word "octahedron." Eight faces, twelve edges, six vertices, and four edges that intersect at each vertex make up an octahedron, a polyhedron. It is one of the five platonic solids with equilateral triangle-shaped faces.

Since two pyramids can be formed from an octahedron, the volume of an octahedron is twice that of a pyramid. We can compute the volume of one pyramid, then multiply it by two to obtain the volume of an octahedron.

The pyramid's volume is equal to (Base area ×Height)/3.

Since the pyramid's base is square, its base area is equal to a².

Therefore, The volume of the octahedron is (Base area ×Height)/3 when two pyramids can be formed from an octahedron, the volume of an octahedron is twice that of a pyramid.

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The process to show the vector field V(x,y,z) as conservative is show  below and the scalar potential f is \(f(x,y,z) =xyz^{2} + e^{\pi }\)   .

A Vector field can be called as conservative if we are able to find the potential function "f" , whose gradient is field .

The Gradient is vector that is made from partial derivatives of potential function .

The Vector function is given as , V(x,y,z) = \((yz^{2} )i + (xz^{2} )j + (2xyz)k\) ,

So , we can write the partial derivatives function of potential function as :

\(\frac{\partial f}{\partial x} = yz^{2}\) ; \(\frac{\partial f}{\partial y} = xz^{2}\) ; \(\frac{\partial f}{\partial z} = 2xyz\),

On Antidifferentiating any of the above three partial derivatives ,

we get ; \(f=xyz^{2} + C\) , here the constant C can take any value ,

so , we take C as \(e^{\pi }\) .

Therefore , the potential Function is \(f(x,y,z) =xyz^{2} + e^{\pi }\) .

The given question is incomplete , the complete question is

Show that the vector field defined by the vector function V(x,y,z) = (yz²)i + (xz²)j + (2xyz)k is conservative by finding a scalar potential f .

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The double of 60 is just two times 60, so:

Answer:120

Step-by-step explanation: Just do 60x2=120

The number of combinations by a TV and a VCR can select is 28 thus option (d) is correct.

When the order of the arrangements counts, a permutation is a numerical approach that establishes the total number of alternative arrangements in a collection.

The number of alternative configurations in a collection of things when the order of the selection is irrelevant is determined by combination.

As per the given,

Number of types of TV = 7

Number of types of VCR = 4

Number of possible combination = 7 x 4 = 28

Hence "There are 28 possible combinations that a TV and a VCR can choose from".

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Answer:

you probably can.

Step-by-step explanation:

I kinda used brainly for my tests, but not all answers were on here. you could ask the question from the exam instead of searching the question

Answer:

I mean why not.....

Step-by-step explanation:

Answer:

EF

Step-by-step explanation:

this line is a mirror version of AB when you reflect it across x=1

Hope this is helpful! :))

Answer:

EF

Step-by-step explanation:

Edge2021

Compute the Gaussian density for the following cases. (a) x=0, m=0, s-1. Give the name of question5a (b) x-2, m=0, s-1. The value of the account on January 1, 2021, would be $2,331.57.

To calculate the value of the account on January 1, 2021, we need to consider the compounding interest for each year.

First, we calculate the value of the initial deposit after three years (12 quarters) using the formula for compound interest:

Principal = $1,000

Rate of interest per period = 8% / 4 = 2% per quarter

Number of periods = 12 quarters

Value after three years = Principal * (1 + Rate of interest per period)^(Number of periods)

                           = $1,000 * (1 + 0.02)^12

                           ≈ $1,166.41

Next, we calculate the value of the additional $1,000 deposit made on January 1, 2019, after two years (8 quarters):

Principal = $1,000

Rate of interest per period = 2% per quarter

Number of periods = 8 quarters

Value after two years = Principal * (1 + Rate of interest per period)^(Number of periods)

                         = $1,000 * (1 + 0.02)^8

                         ≈ $1,165.16

Finally, we add the two values to find the total value of the account on January 1, 2021:

Total value = Value after three years + Value after two years

                ≈ $1,166.41 + $1,165.16

                ≈ $2,331.57

Therefore, the value of the account on January 1, 2021, is approximately $2,331.57.

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Answer:

-73

Step-by-step explanation:

Here's the solving step

Answer:

So what you would do is on a numberline subtract 7 units to the negative side and place your point there

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

to do % you have to multiply your number (50) by the % which is 40%

but you have to turn your number into a decimal (.40) then multiply

you'll get 20 and there is your answer!

hope this helps!

We can conclude that the special tutoring session seems to have had a positive impact on the students' performance, as their mean score increased from below 60% to 70%.

We can conclude that the special tutoring session has been effective since the students' mean score increased from 60 percent to 70 percent on the second test.

The students who scored less than 60 percent on the first test were given a special tutoring session, which resulted in their mean score increasing to 70 percent on the second test.

Therefore, we can conclude that the special tutoring session has been effective in improving the students' performance on the second test.

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Answer:

not all of em

Step-by-step explanation:

some are

To know more about finding the number of arithmetic means: To find the value of 'n', the number of arithmetic means inserted between 6.2 and 19.4, we can use the formula for the sum of an arithmetic series.

The sum of an arithmetic series is given by the formula S = (n/2)(a + l), where S is the sum, n is the number of terms, a is the first term, and l is the last term. In this case, the first term (a) is 6.2, the last term (l) is 19.4, and the sum (S) is 76.8.

By substituting the given values into the formula, we get 76.8 = (n/2)(6.2 + 19.4). Simplifying further, we have 76.8 = (n/2)(25.6). Dividing both sides by 25.6, we get (n/2) = 76.8/25.6. Simplifying the right side, we have (n/2) = 3. Therefore, n = 2 * 3, which equals 6.

Hence, the number of arithmetic means (n) inserted between 6.2 and 19.4 is 6.

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Answer:

3/8 of a pizza

(a) The recurrence relation for y' = 3y is \(\(3c_n = \sum_{n=1}^{\infty} c_n \cdot n \cdot x^{n-1}\).\)

(b) A solution of y' = 3y is given by \\((y = c_0 + c_1x + \frac{2}{3}c_1x^2 + \frac{4}{9}c_1x^3 + \ldots\)\), where the value of c₁ determines the behavior of the solution.

(a) To find the recurrence relation for y' = 3y, we can differentiate the power series representation of y and equate it to 3y.

Differentiating y, we have:

\(\[y' = \sum_{n=0}^{\infty} c_n \cdot n \cdot x^{n-1}.\]\)

Equating this to 3y, we have:

\(\[3y = 3 \sum_{n=0}^{\infty} c_n x^n.\]\)

Comparing the coefficients of the powers of x on both sides, we get:

\(\[3c_n = \sum_{n=0}^{\infty} c_n \cdot n \cdot x^{n-1}.\]\)

To simplify the right side, we can rewrite it as:

\(\[\sum_{n=1}^{\infty} c_n \cdot n \cdot x^{n-1}.\]\)

Now we have the recurrence relation:

\(\[3c_n = \sum_{n=1}^{\infty} c_n \cdot n \cdot x^{n-1}.\]\)

(b) To find a solution of \(\(y' = 3y\)\), we can solve the recurrence relation from part (a) to determine the coefficients \(\(c_n\)\).

Let's start with the initial condition \(\(c_0\)\) and find \(\(c_1\)\). From the recurrence relation, we have:

\(\[3c_1 = c_1 \cdot 1 \cdot x^{1-1} = c_1.\]\)

This implies that c₁ can take any value.

Next, we can find c₂ in terms of c₁:

\(\[3c_2 = c_2 \cdot 2 \cdot x^{2-1} = 2c_2x.\]\)

Simplifying, we have \(\(c_2 = \frac{2}{3}c_1x\).\)

Continuing in this manner, we can find \(\(c_n\)\) in terms of \(\(c_1\) and \(x\)\) for each n.

Therefore, a solution of y' = 3y is given by:

\(\[y = c_0 + c_1x + \frac{2}{3}c_1x^2 + \frac{4}{9}c_1x^3 + \ldots.\]\)

Note that the value of \c₁ determines the behavior of the solution.

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This model must be completed to represent 377 ÷ 12 as follows;

      30     1___

12 | 360  | 17 | 5.

In order to divide the given numbers by using the box method, we would write an expression to represent the number of times in which the number (377) can be divided by the number (12), while including the remainder (17) as follows;

377 ÷ 12 = (360 + 17) ÷ 12

377 ÷ 12 = (360 ÷ 12) + (17 ÷ 12)

377 ÷ 12 = 30 + (17 ÷ 12)

Note: 12 would divide 17 to give an output of one (1) remainder five (5).

In this context, the above mathematical expression would be re-written as follows;

377 ÷ 12 = 30 + 1 R 5.

Where:

The variable R represents remainder.

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If a differentiable function f: ℝ³ ⟶ ℝ has an absolute maximum value K ≠ 0 and an absolute minimum m, then the function f must have a critical point where the derivative of the function is zero (or undefined).

Given that, suppose f : ℝ³ ⟶ ℝ is a differentiable function which has an absolute maximum value K ≠ 0 and an absolute minimum m.

Since f is continuous on a compact set, it follows that f has a global maximum and a global minimum. We are given that f has an absolute maximum value K ≠ 0 and an absolute minimum m. Then there exists a point a ∈ ℝ³ such that f(a) = K and a point b ∈ ℝ³ such that f(b) = m.Then f(x) ≤ K and f(x) ≥ m for all x ∈ ℝ³.

Since f(x) ≤ K, it follows that there exists a sequence {x_n} ⊆ ℝ³ such that f(x_n) → K as n → ∞. Similarly, since f(x) ≥ m, it follows that there exists a sequence {y_n} ⊆ ℝ³ such that f(y_n) → m as n → ∞.Since ℝ³ is a compact set, there exists a subsequence {x_nk} and a subsequence {y_nk} that converge to points a' and b' respectively. Since f is continuous, it follows that f(a') = K and f(b') = m.

Since a' is a limit point of {x_nk}, it follows that a' is a critical point of f, i.e., ∇f(a') = 0 (or undefined). Similarly, b' is a critical point of f. Therefore, f has at least two critical points where the derivative of the function is zero (or undefined). Hence, the statement is true.

Therefore, the above explanation is verified that if a differentiable function f: ℝ³ ⟶ ℝ has an absolute maximum value K ≠ 0 and an absolute minimum m, then the function f must have a critical point where the derivative of the function is zero (or undefined).

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Answer:

A

Step-by-step explanation:

A is the only one with (4,0) (1,-1) (0,0) and (-2,5)

Answer:

w = 20

Step-by-step explanation:

Add 18 on both sides:

\(\frac{w}{4} =5\)

Multiply by 4 on both sides:

w = 20

Answer:

20

Step-by-step explanation:

Let's solve your equation step-by-step.

−13=−18+ w/ 4

Step 1: Simplify both sides of the equation.

−13=−18+ w/ 4

−13=−18+ 1/ 4 w

−13= 1/ 4 w−18

Step 2: Flip the equation.

1/ 4 w−18=−13

Step 3: Add 18 to both sides.

1/ 4 w−18+18=−13+18

1/ 4 w=5

Step 4: Multiply both sides by 4.

4*( 1/ 4 w)=(4)*(5)

w=20