A tape manufacturer has created a new formula that is supposed to be more adhesive on all types of surfaces. Managers wish to conduct an experiment on aluminum and wood to see how well the tape sticks to them. To determine this, they take a random sample of tape with the new formula and use four different weights taped to random places on each of the two surfaces. They will measure how long the tape holds the weights on each surface and compare the times. Which of the following best describes this experiment?a. This is an observational study.b. This is an experiment with blocking.c. The type of surface is a confounding variable.d. This is a double-blind experiment.e. This is a randomized experiment resulting in the placebo effect.

The number of children that attend the fair on the day tha 350 were present in the fair is 200

The number of children in the fair is obtained by solve a simultaneous equation generated as follows

let x be the number if children be x and the number of adults be y. such that

x + y = 350

and from  the cost we  have

$3y + $2x = 900

the two equations are

x + y = 350

3y + 2x = 900

solving simultaneously with a calculator

x = 200 and y = 150

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Answer: The correct answer is choice A. 5.4

Step-by-step explanation:

I hope this helps! :D

On solving the provide question, we got to know that volume of cube is  and volume of cuboid is , so volume cube is greater.

We are aware that a rectangle has four corners and is a two-dimensional form. Think of the form as a collection of parallel rectangles. The resultant form is known as a cube. Take a look at the following three-dimensional cube. Height, Width, and Length

The volume of the cube = [tex]a^3[/tex]

Where a is the length of the side = 7cm

volume of cube =                  

[tex]7*7*7[/tex]We are aware that a rectangle is a two-dimensional shape with four corners. Consider the shape to be a set of parallel rectangles. The resulting shape is referred to as a cube. Look at the following cubic object in three dimensions. Length, Width, and Height

volume of the cuboid = l*b*h =

[tex]7*8*4 = 224 cm^2[/tex]

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The derivative of the function F(x) =x2 et4dt is e−x4(2x)−e−x2.

The derivative of a function of a real variable in mathematics quantifies the sensitivity of the function's value (output value) to changes in its argument (input value). Calculus's core tool is the derivative.

Take the derivative to differentiate anything.

Finding the slope at any point is the same as taking the derivative of a function, so differentiating is just finding the slope.

You may be aware that is typically indicated by either

I'm assuming you mean to determine the derivative of F(x)

F(x)=∫x2xe−t2dt

Let G(x)=∫x0e−t2dt

According to the calculus fundamental theorem

F′(x)=ddx(G(x2)−G(x))

=G′(x2)(2x)−G′(x)

=e−x4(2x)−e−x2.

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The value of 98,060 × 4 = 392240.

The distributive property of multiplication states that when we multiply a number by the total of two or more addends, the outcome is the same as when we multiply the number by each addend separately.

The sum and difference of two more numbers are both subject to the distributive property of multiplication.

According to the Distributive Property of Multiplication:  

                            (A + B)C = AC + BC

Here we have

98,060 × 4

As we know 98060 = (98000 + 60)  

=  (98000 + 60) × 4  

=  (98000 × 4) + (60 × 4)      [ ∵ (A + B)C = AC + BC ]

=  392000 + 240

=  392240

Therefore,

The value of 98,060 × 4 = 392240.

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The Pythagorean theorem states that the square of a right-angled triangle's hypotenuse is equal to the sum of the squares of its other two sides.

You can demonstrate the congruence of two right triangles using the Hypotenuse-Leg (HL) Triangle Congruence Theorem, which is a particular instance. A right triangle is congruent with another right triangle if its hypotenuse and one of its legs are congruent with its hypotenuse and one of its legs.

The hypotenuse (longest side) square in a right-angled triangle is equal to the sum of the squares of the other two sides, according to the Pythagorean theorem (base and perpendicular).

The right triangles are said to be congruent if their respective hypotenuses and legs are congruent with one another, according to the hypotenuse-leg (HL) theorem. By the HL theorem, these triangles are congruent.

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The amount of Brown material: 39 gallons and Green material: 13 gallons.

A proportion is a fraction of a total amount, and in problems involving it, basic arithmetic operations such as multiplication or division are used along with the unit rates to find the equivalent measures.

On the first column of the table, the total amount is:

12.75 + 4.25 = 17 gallons.

The fractions of each material are given as follows:

Brown material: 12.75/17 = 0.75

Green material: 4.25/17 = 0.22.

Therefore, the amount of brown material needed with 52 gallons is:

0.75 x 52 = 39 gallons.

The amount of green material needed with 52 gallons is:

0.25 x 52 = 13 gallons.

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From the following set of points, 26 is a trapezoid but not a isosceles trapezoid while 27 is not a trapezoid at all.

A closed, four-sided trapezoid in two dimensions has a perimeter and an area. Two of the sides are considered the bases of the trapezoid because they are parallel to one another.

The non-parallel sides of a trapezoid are referred to as its legs or lateral sides. The altitude is that distance between two parallel sides that is shortest. The area of a trapezoid can be easily calculated because the opposite sides are parallel to one another.

If the given points make an isosceles trapezoid then AB and CD must be equal and BC and AD must not be equal

Lets solve

26. AB =  [tex]\sqrt{(-4-(-4))^2+(-1-6)^2}[/tex]  = 7

CD =  [tex]\sqrt{(2-(2))^2+ (6-(-4))^2}[/tex] = 10

BC = [tex]\sqrt{(-4-2)^2+ (6-6)^2}[/tex] = 6

AD = [tex]\sqrt{(-4-2)^2+ (-1-(-4))^2}[/tex] = 3√5

Thus, this not an isosceles trapezoid.

27. AB =  [tex]\sqrt{(-5-2)^2+(2-6)^2}[/tex]  = 8.06

CD =  [tex]\sqrt{(-1-2)^2+ (6-1)^2}[/tex] = 5.83

BC = [tex]\sqrt{(-5-(-1))^2+ (6-6)^2}[/tex] = 6

AD = [tex]\sqrt{(2-(-5))^2+ (-1-2)^2}[/tex] = 3√5

None of the side make an trapezoid and it is not a isosceles trapezoid

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Step-by-step explanation:

[tex] - 1 > - 2(x - 4) - 5(4x - 7) \\ - 1 > - 2x + 8 - 20x + 35 \\ - 1 > - 2x - 20x + 8 + 35 \\ - 1 > - 22x + 43 \\ 22x > 43 + 1 \\ 22x > 44 \\ \frac{22x}{22} > \frac{44}{22} \\ x > 2[/tex]

Noah's ambition was $90, and he raised $54 toward that total, or 60% of his fundraising target, in order to benefit the animal sanctuary.

A mathematical equation is a formula that connects two statements using the equal sign (=) to denote equivalence. An algebraic equation is a mathematical statement that establishes the equality of two mathematical expressions. For example, the variables 3x + 5 and 14 are separated by an equal sign in the equation 3x + 5 = 14. Mathematical equations are used to express the connection between two phrases on either side of a letter. There is frequently just one variable, which is also the symbol. example: 2x - 4 = 2.

given

60% x what= $54

Then, by converting 60% to a decimal, we can turn it into a useful number: 0.6. We will substitute x for what because we also need to make "what" simpler to use:

0.6x=54

Get x by itself next, which is referred to as isolating the variable. To accomplish this, divide both sides by 0.6, which is referred to as employing inverse operations.

You must obtain x=90.

Noah's ambition was $90, and he raised $54 toward that total, or 60% of his fundraising target, in order to benefit the animal sanctuary.

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F(x) = 2x³ - x² + 5x − 3 is the polynomial that is in standard form. Thus, option D is correct.

Algebraic expressions called polynomials can include exponents that are multiplied, divided, or added. Different types of polynomials exist. specifically, monomial, binomial, and trinomial. A polynomial with only one term is referred to as a monomial. A polynomial with two unlike terms is referred to as a binomial. An algebraic expression with three terms is known as a trinomial.

Monomials - The term "monomial" refers to algebraic expressions with a single term. In other words, it is an expression that includes any number of similar terms. Hence the name "Bi"nomial," binomials are algebraic expressions with two unlike terms. Trinomials - Trinomials are algebraic expressions with three dissimilar terms, hence the name "Tri"nomial.

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The equation of this parallel line using point slope is  y = 4x - 31.

The equation of a straight line that passes through a particular point and is inclined at a specific angle to the x-axis may be found using the point slope form. Every point on a line must satisfy the equation for the line in order for it to exist. This implies that a line is represented by a linear equation in two variables.

Given that the equation of a line is y = 4x - 2.

Here, we observe that the slope m = 4

Parallel lines have the same slope. So, the slope of the new line is:

m = 4

Given that points (x1, y1) = (5, -11) are also in the new parallel line.

Using the Point-Slope form we can write:

y - y1 = m (x - x1)

Substitute the value of x and y coordinates in the above equation:

y - (-11) = 4 (x - 5)

y + 11 = 4x - 20

y = 4x - 20 -11

y = 4x - 31

Hence, the equation of this parallel line using point slope is  y = 4x - 31.

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The value of K so that the line passing through (-4, 1) and (k, 3) is perpendicular to 8x + 13y = 26 is solved to be

A linear function consists of functions where the variables has exponents of 1. the relationship is expressed in the slope intercept form as below.

y = mx + c

definition of variable to suit the problem

y = output variable

m = slope

x = input variable

c = y intercept

The given equation is rewritten in slope intercept form as follows

8x + 13y = 26

13y = 26 - 8x

y = 2 - 8/13 x

the slope is 8/13

For a perpendicular line the slope = -1/m

= -1/(8/13)

= -13/8

For a line to have a slope of -13/8, the points will be

-13/8 = (1 - 3) / (-4 - k)

cross multiplying

-13(-4 - k) = 8(1 - 3)

52 + 13k = -16

solving for k

13k = -16 - 52

13k = 68

k = 68/13

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Answer:

slope = - 1

Step-by-step explanation:

calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = A (0, 2 ) and (x₂, y₂ ) = B (2, 0 )

m = [tex]\frac{0-2}{2-0}[/tex]  = [tex]\frac{-2}{2}[/tex] = - 1

A: The differential equation can be expressed in the form f(x ,y) = g(x)h(y) = 0, indicating that it is homogeneous. Divide both sides of the equation by y to observe this, which results in  dy/dx + sin^2(x) = cos^2(x)

B: Since there is just one function y and its derivative dy/dx involved in the equation, it is an ODE.

D: Because there is only one function y and its derivative  dy/dx involved in the equation, first-order differential equations are what it is.

G: The formula for the equation is a(x)y' + b(x)y = c(x), where a(x)=1, b(x) = sin^2(x), c(x) = cos^2(x) . Given that x and the coefficients of y and dy/dx are constants, the equation is linear.

H: The equation may be written as dy / y =  (cos^2(x))dx/(1+sin^2(x)),and it is a candidate for integrating factors because we can multiply both sides by (1+sin^2(x))dx .

I: The variables x and y can be separated by integrating both sides of the equation, which can be represented as  (dy/y) = (cos^2(x))dx/(1+sin^2(x)) + (sin^2(x))dx .

J: The equation is self-sufficient; it is not dependent on any explicit function of t.

       Therefore, the differential equation  dy/dx+sin^2(x)y=cos^2(x)y .A candidate for integrating factors exists in the first-order linear, homogeneous, separable, and autonomous ODE known as y.

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The resulting quadratic equation is x^2 - x - 7 = 0.

The x-values for which f(x) < 1 can be determined by solving the inequality f(x) < 1.

Since f(x) is not given in the question, we must first define it. Let's assume f(x) = x^2 - 2x + 1.

The resulting equation is (x - 1)^2 < 0.

The function f(x) is defined as f(x) = x^2 - x - 6.

From here, the equation can be solved for x using the quadratic formula, which gives us x = [7 + sqrt(73)]/2 and x = [7 - sqrt(73)]/2.

Therefore, the x-values for which f(x) < 1 can be expressed in interval notation as (-∞, [7 - sqrt(73)]/2) U ([7 + sqrt(73)]/2, ∞).

(-∞, -3/2] ∪ [-3/4, 1)

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For the given expression, the correct answer is C, 7x².√2x⁴.6√2x¹² = 84x¹⁰.

Finding the value of an algebraic expression when a specified integer is used to replace a variable is known as evaluating the expression. We use the given number to replace the expression's variable before applying the order of operations to simplify the expression.

A variable is a letter, like x, y, or z, that stands in for an arbitrary number. You must substitute a number for each variable and carry out the arithmetic operations in order to evaluate an algebraic expression. Since 6 + 6 equals 12, the variable x in the example above is equal to 6.

Given,

the expression is 7x².√2x⁴.6√2x¹²,

Solving the under root,

⇒ 7x².√2x².6√2x⁶

⇒ 7x² . √2 x². 6. √2 . x⁶     [√2 × √2 = 2]

⇒ 7 × 6 × 2 × x¹⁰ = 84 x¹⁰

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Answer:

581.3

Step-by-step explanation:

Answer:

11.  TS = 123.8 cm

12.  SW = 108.8 cm

13.  m∠SVU = 123°

14.  m∠STU = 123°

15.  US = 217.6 cm

16.  m∠TUV = 57°

Step-by-step explanation:

Properties of a Parallelogram:

11.  Opposite sides are equal in length:

12. Diagonals bisect each other (divide into 2 equal parts):

13. Adjacent angles are supplementary (sum to 180°):

     ⇒ m∠SVU + m∠TSV = 180°

     ⇒ m∠SVU + 57° = 180°

     ⇒ m∠SVU = 123°

14. Opposite angles are equal:

15. Diagonals bisect each other (divide into 2 equal parts):

     ⇒ US = 2 × UW

     ⇒ US = 2 × 108.8

     ⇒ US = 217.6 cm

16. Opposite angles are equal:

The rearranged formulae with x as the subject is x=y-2

Linear equations help in representing the relationship between variables such as x, y, and z, and are expressed in exponents of one degree. In these linear equations, we use algebra, starting from the basics such as the addition and subtraction of algebraic expressions.

Given here:

y=x+2

rearranging we get

x=y-2

Hence, The rearranged formulae with x as the subject is x=y-2

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Answer: 9/4 (This a fraction)

Step-by-step explanation:

We do Keep. Switch. Flip aka KSF

we keep 3/4 and change the sign multiplication and flip 1/3 to 3/1

3/4 x 3/1 = 9/4

Note: I tried my best, don't hate me if it's wrong.

When she comes back to the lab the next morning at 8:00AM, the number of bacteria that will there be is 2000.

From the information, the biologist is researching a newly-discovered species of bacteria. At 8:00AM when she arrives at the lab, she puts a population of 600 bacteria into a favorable growth medium.

She measures the sample again before she goes home at 4:00PM and notes that the population is now 1300 bacteria. The difference in the population will be:

= 1300 - 600

= 700

When she comes back to the lab the next morning at 8:00AM, the number of bacteria that will there be will be:

= 1300 + 700

= 2000

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120 tacos were sold that day. I have attached the work down below.

Answer:

[tex]\displaystyle x=\frac{1\pm\sqrt{5}i}{2}[/tex]

Step-by-step explanation:

[tex]\displaystyle 2x^2=2x-3\\2x^2-2x+3=0\\\\x=\frac{-(-2)\pm\sqrt{(-2)^2-4(2)(3)}}{2(2)}\\\\x=\frac{2\pm\sqrt{4-24}}{4}\\ \\x=\frac{2\pm\sqrt{-20}}{4}\\ \\x=\frac{2\pm2\sqrt{5}i}{4}\\\\x=\frac{1\pm\sqrt{5}i}{2}[/tex]

Answer:

9) 11.18 feet

10) 6.14 inches

Step-by-step explanation:

The first problem sets up a situation with a right triangle. See image. Two sides are given, so you can use Pythagorean Theorem to find the last side. See image.

The second problem also sets up a right triangle. But here only one side length is given and one angle, so you use trigonometry. Sine is the ratio of the opposite side/hypotenuse. Use sine to find the missing length. See image.

I rounded these answers to the nearest hundredth (two decimal places) Check directions if they should be rounded more or less.

To fulfill all of the orders, they must pay their employees a total of $9600 as 480 * 20 = $9600 .

This unit technique is a way of problem-solving that entails calculating the value of a specific unit, multiplying that value, and then calculating the required value. To put it simply, the unit method is used to extract a single model value from a specified multiple. One pen costs 400 rupees, thus 40 pens would cost 400 rupees. There might be a regular procedure for doing this out. merely one nation. anything containing a distinctive component. Mechanics of matrices or operators, abstract algebra, mathematical analysis, and its adjoint and reciprocal are all equivalent.

given

Each employee is paid $12 per hour for the first 40 hours,

therefore $480 must be paid to all of their employees in order to fulfill all orders (20 * 3 = 60 days for 20 automobiles

, or 5 employees working 8 hours per day).

480 * 20 = $9600

To fulfill all of the orders, they must pay their employees a total of $9600.

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Frank is going to plant d vegetable seeds in one garden, and 3d + 6 vegetable seeds in another. So Frank is going to plant 4d + 6 vegetable seeds in total.

Algebra is a branch of mathematics that deals with mathematical symbols and the rules for manipulating these symbols. Algebra is used to solve problems and to describe patterns and relationships between variables. It is a powerful tool for modeling and understanding many types of real-world situations.

In algebra, letters or other symbols are used to represent numbers or quantities that are not known. These symbols can be manipulated using mathematical operations, such as addition, subtraction, multiplication, and division. Equations and inequalities involving these symbols can be solved to find the values of the unknowns. Algebraic equations can also be graphed to visualize the relationship between the variables.

To find the total number of vegetable seeds Frank is going to plant, we can add the number of seeds he is planting in each garden:

d + (3d + 6) = d + 3d + 6 = 4d + 6

So Frank is going to plant 4d + 6 vegetable seeds in total.

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Factor of x ^2+7x−18 is (x−2)(x+9)

What is factorization?

In mathematics, factorization or factoring consists of writing a number or another mathematical object as a product of several factors, usually smaller or simpler objects of the same kind.

We are given a polynomial expression in terms of variable x as:

x² - 7x + 18

x ^2+7x−18

=x ^2−2x+9x−18

=x(x−2)+9(x−2)

=(x−2)(x+9)

∴ x ^2+7x−18=(x−2)(x+9)

Hence, Factor of x ^2+7x−18 is (x−2)(x+9)

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