The number of Barnes & Noble bookstores has increased, then decreased through the years. The piecewise function () given below shows how “pieces of” two functions can help determine the number of Barnes & Noble stores for particular intervals of years. Use =6 for the year 2006, =7 for the year 2007, etc. ()= { −3.692 +65.28+437.30 6≤ <12 −10.17+691 ≥12 a. According to (), how many Barnes & Noble stores were there in 2009?

Answer:

i hope this help

Step-by-step explanation:

Statement Reason

Points A, B, and C form a triangle. Given

Let be a line passing through B and parallel to . Definition of parallel lines

∠3 ≅ ∠5 and ∠1 ≅ ∠4 Definition of corresponding angles in parallel lines

m∠1 = m∠4 and m∠3 = m∠5 Substitution of corresponding angles

m∠4 + m∠2 + m∠5 = 180° Angle addition and definition of a straight line

m∠1 + m∠2 + m∠3 = 180° Substitution.

The required domain of the function is all real numbers. Option A is correct.

The domain is defined as the values of the independent variable for which there is a certain value of the dependent variable exists in the range of the function.

here,
Given function,
f(x) = 2x³ + 8

Since the domain of the given function is all real numbers, and also the range of the function is all real numbers.

Put x = 0,
f(0) = 8

the y-intercept of the function is (0, 8)

Thus, the required domain of the function is all real numbers. Option A is correct.

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Answer: a) No existe un tipo específico de arroz que aporte más vitamina B1. La cantidad de vitamina B1 varía dependiendo del cultivo y la forma de preparación.

b) El arroz fortificado con yodo es el que proporciona una mayor cantidad de yodo al organismo.

c) El arroz integral o de grano entero proporciona una mayor cantidad de fibra en comparación con el arroz refinado.

d) No se puede determinar la cantidad exacta de complejo B que aporta el arroz refinado, ya que depende de varios factores como el tipo de cultivo, la forma de preparación y el método de almacenamiento.

e) El arroz integral o de grano entero es preferible para consumo por una persona que desea obtener una mayor cantidad de potasio, ya que es una fuente rica en este nutriente.

f) El arroz integral o de grano entero es preferible porque es una fuente de nutrientes más completa que el arroz refinado. Sin embargo, esto depende de las necesidades individuales y objetivos nutricionales. Algunas personas pueden necesitar más arroz refinado por motivos de digestibilidad, mientras que otras pueden preferir el arroz integral para obtener una mayor cantidad de fibra, vitaminas y minerales.

Step-by-step explanation:

The 1995 processor when compared to the processor in today's phones is 12 .5 times larger .

To find how much larger the 1995 processor is , you first need to find the area of the processors.

Area of 1995 processor:

= 3. 8 x 2 . 9

= 11. 02 cm ²

Area of 2005 processor :

= 1. 1 x 0. 8

= 0. 88 cm ²

In comparison to the 2009 processor, the 1995 processor is :

= 11. 02 / 0.88

= 12 .5 times larger

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Answer:

hey, what are you asking

Step-by-step explanation:

All of three statements about addition, multiplication and division of rational numbers are true.

The square root of any nonperfect square number is an irrational number.

                                   Complex numbers (a + ib)

Real numbers                                                                 Imaginary numbers.

(a + i0)                                                                                      (0 + ib)

Rational numbers               Irrational numbers

(perfect squares)              (non-perfects squares)

Fractions.  

(p/q, q ≠ 0)            

Integers.

(whole nos. -: 0 to ∞)

(negative integers -: - ∞ to - 1)

(positive integers -: 1 to ∞)

The statement adding two rational numbers is a rational number is true.

The statement multiplying two rational numbers is a rational number is true.

The statement if you divide two rational numbers, you’ll always get a rational number is also true.

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This simplified form of given expression is: 21952s¹⁵t³/(-8s⁶t¹²) = 21952 / -8 *s¹⁵t³ / s⁶t¹² = 2744 / -1 * s⁹t⁻⁹

An expression or mathematical expression is a finite collection of symbols that is well-formed according to context-dependent norms. In mathematics, an expression is a phrase that has at least two numbers or variables and at least one arithmetic operation. Addition, subtraction, multiplication, or division are all examples of math operations. An expression in mathematics is a collection of numbers, variables, and functions (such as addition, subtraction, multiplication or division etc.) Expressions and phrases are similar in structure.

Here,

Now, we can multiply this result by the original expression raised to the power of 3:

(4s⁵t⁻⁷/−2s⁻²t⁴)³ * (1/(-8s⁶t¹²)) = (4s⁵t⁻⁷)³ / (-8s⁶t¹²)

Finally, we'll simplify the numerator by raising 4s⁵t-7 to the power of 3:

(4s⁵t-7)³ = (4s⁵t)³ * (-7)³ = 64s¹⁵t³ * 343 = 21952s¹⁵t³

Putting it all together, we get the abbreviated version of the given expression: 21952s¹⁵t³/(-8s⁶t¹²) = 21952 / -8 *s¹⁵t³ / s⁶t¹² = 2744 / -1 * s⁹t⁻⁹

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[A] Under the present cash-only sales policy, the firm's net cash flow every three weeks is:

2,548 units x RM35/unit = RM89,180

2,548 units x RM20/unit = RM50,960

= RM38,220

[B] The firm's immediate (now) net cash flow from adoption of the proposed 3-week credit sales policy is:

0

[C] The firm's net cash flow every 3 weeks from adopting the proposed credit policy is:

2,912 units x RM36/unit = RM105,312

2,912 units x RM22/unit = RM63,904

= RM41,408

[D] The incremental cash flow every 3 weeks arising from switching from the present cash to the proposed credit policy is:

RM41,408 - RM38,220 = RM3,188

[E] The firm's effective 3-week required rate of return from receivables is:

7%/4 = 1.75%

[F] The present value of the perpetual incremental 3-week cash flows arising from switching from the cash to credit policy is:

RM3,188 / (1 + 1.75%) = RM3,147.65

[G] The present value of the costs of switching from cash to credit policy is:

0

[H] The net present value of switching from cash to credit policy is:

RM3,147.65 - 0 = RM3,147.65

[I] The firm should switch from the cash to credit policy as the net present value is positive. The increase in revenue from the increased sales volume outweighs the increased cost of goods sold.

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The real roots of the polynomial function are (a) r = -6 and r = 2

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

s(r) = r^5 + 4r^4 - 13r^3 - 10r^2 - 12r + 72

At the real roots of the polynomial function, the following must be true

s(r) = 0

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

Next, we test the options

Option (a)

s(-6) = (-6)^5 + 4(-6)^4 - 13(-6)^3 - 10(-6)^2 - 12(-6) + 72 = 0

s(2) = (2)^5 + 4(2)^4 - 13(2)^3 - 10(2)^2 - 12(2) + 72 = 0

See that s(-6) and s(2) have the values of 0

Hence, the real roots are s = -6 and s = 2

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Step-by-step explanation:

-x² + 4x + 8 = (x + 2)² = x² + 4x + 4

-x² + 8 = x² + 4

4 = 2x²

2 = x²

x = ±sqrt(2)

trinomial just means "3 terms".

binomial just means "2 terms".

(x + 2) is therefore a binomial. its square is (x + 2)².

the question is for what x are the trinomial and the square of the binomial equal.

so, we just set both expressions as equal and solve for the variable x.

there are 2 solutions :

+sqrt(2)

-sqrt(2)

The value of the angle Z will be 56 degrees.

The angles that the same arc subtends at its circumference are equal. At the circle's centre, two equal chords subtend two equal angles.

The triangle in the centre is an isosceles triangle so the two angles will be 34°.

The third angle will be calculated as:-

Central angle = 180 - 34 - 34

Central angle = 112

The measure of the angle Z will be:-

Z = 112 / 2

Z = 56°

Therefore, the measure of the angle Z suspended outside will be 56 degrees.

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Answer:

slope-5\7 is the answer

Answer: A and C

Step-by-step explanation: They both get longer by 3 blocks (X is 3 blocks long, 1 block tall) and 1 block tall per every 3 blocks added length wise.

Step-by-step explanation:

geometric mean theorem for right-angled triangles :

height = sqrt(pq)

where p and q are the parts of side as split by the height of that side.

19.

x = sqrt(4×16) = sqrt(64) = 8

20.

y = sqrt(5×8) = sqrt(40) = 6.32455532...

21.

18 = sqrt(12y)

18² = 12y

324 = 12y

y = 27

22.

10 = sqrt(25x)

10² = 25x

100 = 25x

x = 4

23.

Pythagoras

x² = 5² + height² = 25 + 4×5 = 25 + 20 = 45

x = sqrt(45) = 6.708203932...

24.

Pythagoras

b² = 16² + height² = 256 + 6×16 = 256 + 96 = 352

b = sqrt(352) = 18.76166304...

25.

Pythagoras

27² = 16² + height² = 256 + 16(z - 16) =

= 256 + 16z - 256 = 16z

729 = 16z

z = 729/16 = 45.5625

26.

Pythagoras

x² = (8 - 2)² + height² = 6² + (8 - 2)×2 =

= 36 + 12 = 48

x = sqrt(48) = 6.92820323...

Answer:

D

Step-by-step explanation:

lateral area = circumference * height

= 2π*r *24

=2π*6*24 =288π yd² = 904

A statement which best describes the area of Triangle ABC shown above include the following: D. It is one-half the area of a rectangle of length 2 units and width 4 units.

Mathematically, the area of a triangle can be calculated by using this mathematical expression:

Area of a triangle = 1/2 × b × h

Where:

Mathematically, the area of a rectangle can be calculated by using this formula:

Area of a rectangle = LW or bh

Where:

In this context, we can reasonably infer and logically deduce that the area of a triangle ABC is half the of a rectangle i.e A = (bh)/2.

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Answer:

Choice A (x=9)

Step-by-step explanation:

There are 180 degrees in a triangle, as seen in the picture; the triangle shown is an equilateral triangle meaning all angles are the same; therefore, each side has to be 60 degrees. Therefore the answer we plug into 5x+15 must simplify to 60. So:

5x+15

plug in 9

= 5 (9) + 15

= 45 + 15

= 60

The standard deviation of the number of toys donated by juniors is greater than that of seniors.

It is the measure of the dispersion of statistical data. Dispersion is the extent to which the value is in variation.

[tex]\rm \sigma = \sqrt{\dfrac{\Sigma (x_i - \mu)^2}{n}}[/tex]

For the seniors, the mean is given as,

Mean = (5 x 2 + 35 x 2 + .... + 15 x 2) / 10

Mean = 26

Then the standard deviation is given as,

σ = √[(26 - 5)² + (26 - 5)² + (26 - 15)²] / 10

σ = 14.28

For the juniors, the mean is given as,

Mean = (40 x 2 + 25 x 2 + ....... + 40 x 2) / 10

Mean = 26

Then the standard deviation is given as,

σ = √[(26 - 40)² + (26 - 25)² + (26 - 40)²] / 10

σ = 13.19

The standard deviation of the number of toys donated by juniors is greater than that of seniors.

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The complete question is given below.

a) The leash is 12.2 ft long.

b) The diagonal is 7.1m

c) The altitude is 6.1 in

We can see a right triangle here, where the leash is the hypotenuse of that triangle.

Using the Pythagorean's theorem we can write:

leash = √( (10ft)² + (7ft)²)

leash = 12,2 ft

8) Remember that for a square of side length S, we have:

perimeter = 4*S

diagonal = √2*S

We know that the perimeter is 20 meters, then:

20m = 4*S

S = 20m/4 = 5m

Then the diagonal is:

D = √2*5m = 7.1m

9) For an equilateral triangle of sidelength S, the altitude is:

A = √( S² - (S/2)²)

In this case the side length is 7 inches, then:

A = √( (7in)² - (7in/2)²)

A = 6.1 in

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The student would consume 1,095/24, or 45.625 cases of Mt. Dew per year.

Consume is an action or process of buying or using goods or services. It is the use of a resource, typically money or time, for a specific purpose. It is the purchase of goods or services for personal use or for the use of a family, business or organization. Consumption of goods and services is the basic activity of any economy.

Assuming that there are 365 days in a year, the student would consume 1,095 cases of Mt. Dew per year. This can be calculated by multiplying 3 cans per day by 365 days, resulting in a total of 1,095 cans. Since there are 24 cans per case, the student would consume 1,095/24, or 45.625 cases of Mt. Dew per year.

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Answer: -.6, 0, .6

Step-by-step explanation: (-1,6) (0,0) (1, .6)

Let's let w = the width of the rectangle.  If the length is 10 yards less than 3 times the width, then the length is 3w - 10.

How do we find the area?  Length times width, right?

So, we have w(3w - 10) = 77.  Distributing, we get 3w2 - 10w = 77.

We need to put it all on one side, so we subtract 77 from both sides.

3w2 - 10w - 77 = 0

Now, we have to factor the left side. To do this, we multiply 3(-77) = -231.  What are two factors of -231 that add up to -10? How about -21 and 11?  -21(11) = -231 and -21 + 11 = -10.

This may not be how you are taught, but we are now going to split -10w into -21w + 11w and plug that into our equation.

Sooooo, now we have 3w2 - 21w + 11w - 77 = 0

Next, we are going to look at the first two terms, 3w2 - 21w.  What is common between the two? 3w. Factoring out 3w, we get 3w(w - 7).

Now, the second two terms, 11w - 77. What is common? 11. Factoring out 11, we get 11(w - 7).

Putting all of that together, we now have 3w(w - 7) + 11(w - 7) = 0.

I can explain why and make it more confusing, so I'll just tell you that, since the w - 7 is the same in both parentheses, we keep that as one set of parentheses and combine what's in front into a second set of parentheses.

So, we have (w - 7)(3w + 11) = 0

Lastly, for the left side to equal 0, then either w - 7 and/or 3w + 11 has to equal 0, right?

We pull each out and set them equal to 0.

w - 7 = 0

     w = 7

If we plug in 7, we get (7-7)(3(7) + 11) = (0)(21+11) = 0(32) = 0, which is what we want.

3w + 11 = 0

        3w = -11

          w = -11/3

If we plug -11/3 into the same equation, we'd get 0, again what we want.  However, we can't have a negative length!  Therefore, -11/3 is out as an answer.

Our width is 7.  Since the length is 3w - 10, we plug in 7 and get 3(7) - 10 = 21 - 10 = 11.

Let's check. Length times width = 7(11) = 77. Check!

Answer:

Interest = $720

Balance = $9,720

Step-by-step explanation:

P = $9,000, the principal

r = 8% = 0.08, the interest rate

n = 2, semiannual compounding

After 6 months, the interest is

9000 * 0.08 = $720

The balance after 6 months is

9000 + 720 = $9720

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The area of the folded napkin is 81 square inches.

Square inch is a unit of area, equal to the area of a square with sides of one inch.

A square with an area of 324 square inches can be folded in half to form a rectangle with half the area, or 162 square inches.

Folding the rectangle in half again will result in a smaller square with a side length equal to half the shorter side of the rectangle. The area of this smaller square is (1/2)^2 * 162 square inches = 81 square inches.

So, the area of the folded napkin is 81 square inches.

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The approximation for the population of the bacteria 5 minutes from now is 3506 organisms.

Let's call the current time "t", and the population of the bacteria at time "t" be "P(t)".

So, we have two points on the curve:

(t, P(t)) = (0, 1661), and (t + 9, P(t + 9)) = (9, 3 * 1661) = (9, 4983).

The equation of the line that passes through these two points can be found using the point-slope form of the line:

y - y1 = m(x - x1)

Substituting the points into the equation, we get:

4983 - 1661 = m(9 - 0)

m = (4983 - 1661) / (9 - 0) = 3322 / 9 = 369

So, we have

y = 369x + 1661

For the next 5 minutes, we have

P(t + 5) ≈ y = 369 * 5 + 1661 = 3506 (rounded to the nearest whole number)

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Answer

We have, 6% × x = 24 or, 6 100 × x = 24

Step-by-step explanation:

Multiplying both sides by 100 and dividing both sides by 6,

Answer:

24 % of that number is 4

Step-by-step explanation:

First solution:

If 6% of a number is 1, then 1% is 1/6 which is a repeating decimal, so we can just take it as 1/6. Then, to find 24% of that number we would have to do 1/6 x 24 which is equal to 24/6. 6 can evenly divide 24 which is 4.

Second solution:

We can see that since 24 is evenly divided by 6, to find 24%, we can multiply 1 by 4 because 6% x 4 = 24%

Therefore, 24% of that number is 4.

The weight of the table in terms of y is 2y

What is an equation?

An equation is a mathematical statement that proves two mathematical expressions are equal in algebra, and this is how it is most commonly used. In the equation 3x + 5 = 14, for instance, the two expressions 3x + 5 and 14 are separated.

Let z be the weight of 1 cupboard

Let x be the weight of 1 table

Z = 5y+6+x

3z+4x=29y+18

=> 4x=29y+18 - 3z

Substitute for z

4x=29y+18 - 3(5y+6+x)

   = 29y+18 -15y-18-3x

4x+3x=14y

=> 7x=14y

=> x=2y

The weight of the table in terms of y is 2y

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If Sandy used a virtual coin toss app to show the results of flipping a coin 100 times, 500 times, and 1,000 times. The things that most likely happened in Sandy's experiment is: C. Sandy's experimental probability was closest to the theoretical probability in the experiment with 1,000 flips.

Sandy's experimental probability was closest to the theoretical probability in the experiment with 1,000 flips.

This is because as the number of trials increases, the experimental probability tends to as well  approach the theoretical probability. The theoretical probability of getting heads or tails in a fair coin flip is always 0.5 or 50%. The larger the sample size, the more likely the experimental probability will be close to the theoretical probability.

Therefore the correct option is C.

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The amount that should be deposited monthly is $286.66.

The monthly deposit is the periodic payment into an investment account that earns interest at a compound rate.

The monthly deposit can be determined using an online finance calculator.

N (# of periods) = 60 months (5 years x 12)

I/Y (Interest per year) = 6%

PV (Present Value) = $0

FV (Future Value) = $20,000

Results:

Monthly Deposit = $286.66

Sum of all periodic deposits = $17,199.36

Total Interest = $2,800.64

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The length of AB is 10 cm.

What is the Pythagorean Theorem?

The Pythagorean theorem is a mathematical theorem that states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. It can be expressed as c² = a² + b².

The length of AB can be found using the Pythagorean theorem. The theorem states that in a right triangle, the sum of the squares of the lengths of the two shorter sides equals the square of the length of the hypotenuse (the longest side). In this case, we can form two right triangles, one with sides AD and AC and another with sides BC and AB.

Using the Pythagorean theorem, we have:

AB² = AC² + AD²

AB² = (8²) + (6²)

AB² = 64 + 36

AB² = 100

AB = √(100) = 10

Hence, AB is 10 cm.

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