Question 1 of 22
Klay's lunch cost $6. This is $2 less than Ella's lunch cost. How much did
Ella's lunch cost? Select the correct solution method, using x to represent the
cost of Ella's lunch.
A.
NIX
= 6. Multiply both sides by 2. Ella's lunch cost $12.
B. 2x = 6. Divide both sides by 2. Ella's lunch cost $3.
C. x + 2 = 6. Subtract 2 from both sides. Ella's lunch cost $4.
O D. X-2 = 6. Add 2 to both sides. Ella's lunch cost $8.

The option that applies to 2cos(x)+sqrt2=0 less than x less than 2pi is options C and D:

c.5pi/4

d.7pi/4

To solve this equation, we can start by isolating the cosine term on one side of the equation:

[tex]2cos(x) = -\sqrt{2[/tex]

[tex]cos(x) = \sqrt{\frac{2}{2} } }[/tex]

The cosine function has a range of [-1, 1], so the only possible value for cos(x) is -sqrt(2)/2. This means that the only solution to the equation is x = acos(-sqrt(2)/2).

The inverse cosine function, denoted as "arccos," gives us the angle whose cosine is a given value. In this case, we want to find the angle whose cosine is -sqrt(2)/2. The domain of the arccos function is [-1, 1], so the range of the function is [0, pi]. This means that the solution x must be an angle in the range [0, pi].

Since the problem specifies that the solution must be in the range [0, 2pi], we need to consider all possible angles in that range that satisfy the equation. This means that the possible solutions are:

[tex]x = acos(-\sqrt (2)/2) + 2\pi *k[/tex]

where k is an integer.

Substituting the values from the given choices into this equation, we find that the possible solutions are:

[tex]a. x = acos(-\sqrt{\frac{2}{2} } + 2\pi 0 = \pi /4 + 0 = \pi /4\\b. x = acos(-\sqrt{\frac{2}{2} } + 2\pi 1 = \pi /4 + 2\pi = 3\pi /4\\c. x = acos(-\sqrt{\frac{2}{2} } + 2\pi 2 = \pi /4 + 4\pi = 5\pi /4\\d. x = acos(-\sqrt{\frac{2}{2} } + 2\pi 3 = \pi /4 + 6\pi = 7\pi /4[/tex]

Therefore, the correct answer is c. and d.

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Answer:

b.3pi/4 

c.5pi/4 

Step-by-step explanation:

Measure of angle ABE is 47°.

An angle is a figure in Euclidean geometry made up of two rays that share a common terminal and are referred to as the angle's sides and vertices, respectively. Angles created by two rays are in the plane where the rays are located. The meeting of two planes also creates angles. We refer to these as dihedral angles. The angle formed by the rays lying perpendicular to the two crossing curves at the point of junction is another property of intersecting curves. Angle can also refer to the length of a rotation or an angle. This metric represents the relationship between a circular arc's length and radius.

Given

∠CBE = 43°

As we know, ∠ABC is a right angle

∠ABC = ∠ABE + ∠CBE

90 = ∠ABE +43

∠ABE = 90 - 43

∠ABE = 47

Measure of angle ABE is 47°.

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Geometric sequence has a common ratio.

Let's verify is the ratio of subsequent terms is common:

As wee se the ratio is common, it confirms that the sequence is geometric.

Common ratio is:

Answer:

Yes, the sequence is geometric.

[tex]\textsf{Common ratio}=\dfrac{2\sqrt{3}}{3}[/tex]

Step-by-step explanation:

Given sequence:

[tex]2, \; \dfrac{4}{\sqrt{3}},\; \dfrac{8}{3},\;\dfrac{16}{3\sqrt{3}},\;...[/tex]

A geometric sequence has a common ratio.

Therefore, to check if the given sequence has a common ratio, divide each term by the previous term:

[tex]\boxed{\begin{aligned}\dfrac{16}{3\sqrt{3}} \div \dfrac{8}{3}&=\dfrac{16}{3\sqrt{3}} \times \dfrac{3}{8}\\\\&=\dfrac{48}{24\sqrt{3}}\\\\&=\dfrac{2}{\sqrt{3}}\\\\&=\dfrac{2\sqrt{3}}{3}\end{aligned}}[/tex]

[tex]\boxed{\begin{aligned}\dfrac{8}{3} \div \dfrac{4}{\sqrt{3}}&=\dfrac{8}{3} \times \dfrac{\sqrt{3}}{4}\\\\&=\dfrac{8\sqrt{3}}{12}\\\\&=\dfrac{2\sqrt{3}}{3}\end{aligned}}[/tex]

[tex]\boxed{\begin{aligned} \dfrac{4}{\sqrt{3}} \div 2&= \dfrac{4}{\sqrt{3}} \times \dfrac{1}{2}\\\\&= \dfrac{4}{2\sqrt{3}} \\\\&=\dfrac{2}{\sqrt{3}}\\\\&=\dfrac{2\sqrt{3}}{3}\end{aligned}}[/tex]

As there is a common ratio, the sequence is geometric.

The common ratio is:

22>x>36 is the range for the third side's measurement when two sides of a triangle are measured at 7 km and 29 km.

Given that,

When the other two sides of a triangle are measured at 7 km and 29 km.

We have to determine the range for the third side's measurement.

We know that,

Take the measured sides.

7 km and 29 km

So, we can write as

The two sides added together are greater than the third side.

So, take one side as x

We get,

7+x>29

Taking 7 to the right side we get negative 7
x>29-7

x>22

Now taking 29 to left side and x to sides

7+29>x

36>x

Therefore, 22>x>36 is the range for the third side's measurement when two sides of a triangle are measured at 7 km and 29 km.

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Answer:

160 cm

Step-by-step explanation:

the question says twice this length

the length is 80 cm, therefore

[tex]80 \times 2 = 160[/tex]

This is because the question is dimply asking you to double the length of the shirt

Answer:

number is 4

Step-by-step explanation:

let n be the number then 4 times the number is 4n and

4n = n + 12 ( subtract n from both sides )

3n = 12 ( divide both sides by 3 )

n = 4

that is the number is 4

Assuming that the meal cost $50, the Shapley values (payments) for each player is: number of possible combination , Player 1: $15 , Player 2: $10 , Player 3: $10 , Player 4: $15

1. Calculate the marginal contribution of each player. This is the amount of money that each player adds to the total cost of the meal.

Player 1: $25

Player 2: $15

Player 3: $10

Player 4: $0

2. Calculate the Shapley Value for each player. This is calculated by taking the average of the marginal contribution of each player, weighted by the number of possible combinations they could have been in.

Player 1: ($25*3 + $15*2 + $10*1 + $0*0) / 6 = $15

Player 2: ($25*2 + $15*3 + $10*2 + $0*1) / 6 = $10

Player 3: ($25*1 + $15*2 + $10*3 + $0*2) / 6 = $10

Player 4: ($25*0 + $15*1 + $10*2 + $0*3) / 6 = $15

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Step-by-step explanation:

The first, twelfth and last term of an arithmetic progression are and , respectively. Determine (a) the number of terms in the series, (b) the sum of all the terms and (c) the 80 th term

Answer:

The number can be any value less than or equal to 100.

Thus, it can be any number in this range: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100]

Step-by-step explanation:

Firstly, let's convert the word problem into a math expression:

[tex]\frac{x}{5}+25\leq45[/tex]

We can now solve this inequality for the variable x.

[tex]\frac{x}{5} \leq 20[/tex]

[tex]x \leq 100[/tex].

Therefore x is any value less than or equal to 100.

The results were as follows: a) x = +6, -6; b) x = +-2.6591; c) x = +- 3.1622; and d) x =+-5.

Get a number that, when multiplied twice by itself, equals the original number in order to find the square root of any integer. Similar to this, we must discover a number that, when multiplied three times by itself, equals the original number in order to get the cube root of any integer. equivalently for 4throots and so on.

We have

a)

[tex]x^{2}[/tex] = 36

so x= [tex]\sqrt{36}[/tex]

x = +6, -6

b)

[tex]x^{2}[/tex] = [tex]\sqrt{50}[/tex]

x = [tex]\sqrt[4]{50}[/tex]

x = +-2.6591

c)

[tex]x^{2}[/tex] = [tex]\sqrt{100}[/tex]

x = [tex]\sqrt[4]{100}[/tex]

x = +- 3.1622

d)

2[tex]x^{2}[/tex] = 50

[tex]x^{2}[/tex] = 50/2

[tex]x^{2}[/tex] = 25

x   =+-5

Thus a) x = +6, -6; b) x = +-2.6591; c) x = +- 3.1622; and d) x =+-5.

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By using properties of triangle, it can be calculated that-

t = 60°

u = 8

What is a triangle?

A triangle is a three sided two dimensional figure. A triangle has three sides and three interior angles.

Based on the sides of a triangle, triangle may be classified as equilateral, isosceles and scalene

Triangle whose all three sides are equal is called equilateral

Triangle whose two sides are equal is called isosceles

Triangle whose all sides are unequal is called scalene

Here,

[tex]\angle[/tex]FGE = 90°

[tex]\angle[/tex]GFE = 30°

[tex]\angle FEG[/tex] = 180 - (90 + 30)

           = 180 - 120

           = 60°

t = 60°

Since FE = HE and [tex]\Delta[/tex]FGE and  [tex]\Delta[/tex]FGE are right angle triangles,

So FG = FH

u = 8

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No information is given for x and it can be fraction or real number, so option D is correct.

What is fraction ?

A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. In a proper fraction, the numerator is less than the denominator.

Fractions represent the parts of a whole or collection of objects. A fraction has two parts. The number on the top of the line is called the numerator.

It tells how many equal parts of the whole or collection are taken.

No information is given for x and it can be fraction or real number, so option D is correct.

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The amount of money on the card decreases by $1.43 per week. The slope is a measure of the steepness of a line

The slope can be positive, negative, or zero. A positive slope means that the line slopes upward from left to right, which means that the value of the dependent variable (in this case, M) increases as the value of the independent variable (t) increases. A negative slope means that the line slopes downward from left to right, which means that the value of the dependent variable decreases as the value of the independent variable increases.

To find the linear equation that models the data, we need to find the slope of the line. The slope is calculated by using the formula:

slope =[tex](y_2 - y_1) / (x_2 - x_1)[/tex]

Where [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex] are two points on the line. In this case, we can use week 0 and week 14 as our two points. Let's say that at week 0, M = $100 and at week 14, M = $80. Then the slope would be:

slope = ($80 - $100) / (14 - 0) = -$20 / 14 = -$1.43

So the linear equation that models the data is:

M = -$1.43 * t + $100

The missing part in the question is shown in the attachment.

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Answer:

32

Step-by-step explanation:

1536 divided by 48 is 32.

I'd say the answer is reasonable because the number is a positive number and also because each item/thing is equal to they are the same thing and nothing is too big or too small.

Answer:

  x = 7.2

Step-by-step explanation:

You want the value of x that makes ∠BCE = 45° = (5x +9)°.

Divide by ° and subtract 9 to get ...

  36 = 5x

Divide by 5, and you have the value of x:

  7.2 = x

The value of x is 7.2.

__

Additional comment

You know that the corner angles of a square are 90°, and that the diagonals bisect the corner angles. Each half is 45°.

Answer:

Step-by-step explanation:

4/4

8/6

4/6

By using the formula for area of parallelogram, it can be calculated that

Felix needs to buy 80 [tex]cm^2[/tex] of tiles

What is area of parallelogram?

Area of parallelogram is the total space taken by the parallelogram.

If b is the base of the parallelogram and h is the height of the parallelogram, then area of the parallelogram is calculated by the formula

Here,

Base of each parallelogram = 4cm

Height of each parallelogram = 2cm

Area of  each parallelogram = 4 [tex]\times[/tex] 2 = 8 [tex]cm^2[/tex]

Area of 10 parallelograms = 8 [tex]\times[/tex] 10 =  80 [tex]cm^2[/tex]

Felix needs to buy 80 [tex]cm^2[/tex] of tiles

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Complete Question

The full diagram has been attached.

Answer:

The inequality has two prime solutions. To determine the number of prime solutions that the inequality has, we need to first solve the inequality to find its solutions. Since the inequality involves a polynomial, we can use the techniques of algebraic manipulation and factoring to solve it.

We begin by multiplying out the left-hand side of the inequality to obtain:

(n²-17)(n²-100)≤0

This expression can be further simplified by multiplying out the terms in the brackets, which gives us:

n⁴ - 117n² + 1700 ≤ 0

To solve this inequality, we need to find the values of n that make the left-hand side equal to zero. We can do this by setting the expression equal to zero and then factoring it to obtain:

n⁴ - 117n² + 1700 = 0

n² (n² - 117) + 1700 = 0

(n² - 19)(n² - 90) + 1700 = 0

(n² - 19)(n² - 90) = -1700

To find the solutions of this equation, we need to find the values of n that make the left-hand side equal to zero. We can do this by setting each factor equal to zero and solving for n:

n² - 19 = 0 or n² - 90 = 0

n² = 19 or n² = 90

n = ±√19 or n = ±√90

Since the problem states that n is a prime number, we need to consider only the solutions where n is a prime number. Of the solutions above, only n = ±√19 and n = ±√90 are prime numbers, so these are the only solutions that we need to consider. Since there are two such solutions, the inequality has two prime

To calculate the total amount of interest that Edgar will owe on his credit card debt after 2 years of quarterly compounding at a 20% annual interest rate, we need to use the formula A = P(1 + r/n)^nt, where A is the total amount of money owed after t years, P is the initial principal (or amount borrowed), r is the annual interest rate, n is the number of times the interest is compounded per year, and t is the number of years. In this case, the initial principal is $9,000, the annual interest rate is 20%, the number of times the interest is compounded per year is 4 (since the interest is compounded quarterly), and the number of years is 2. Plugging these values into the formula, we get A = $9,000(1 + 0.20/4)^4 * 2 = $9,000(1.05)^8 = $9,000 * 1.4064 = $12,658.40. Thus, after 2 years of quarterly compounding at a 20% annual interest rate, Edgar will owe approximately $12,658.40 on his credit card debt. This result should be rounded to the nearest cent, giving us $12,658.40.

Answer:

  1, 4, 5

Step-by-step explanation:

You want to identify correct proportions between the sides of similar isosceles trapezoids ABCD and WXYZ.

The similarity statement tells us the corresponding side pairs are ...

A proper proportion will be equate ratios of the corresponding sides in the same trapezoid, or the corresponding sides in different trapezoids.

AB/WX = DA/ZW . . . . . . correct

AB/WX = ZW/DA . . . . . . incorrect

CB/XY = WX/AB . . . . . . incorrect

AB/WX = CB/YX . . . . . . correct

DA/AB = ZW/WX . . . . . . correct

BC/AD = XY/YZ . . . . . . incorrect

The angle in the similar triangles is as follows:

m∠N = 42 degrees

Similar triangles are the triangles that have corresponding sides in proportion to each other and corresponding angles equal to each other.

In other words, two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion.

Therefore, triangle JKL is similar to triangle NOP. This means the corresponding angles are congruent.

Hence,

∠J = ∠N

∠K = ∠O

∠L = ∠P

Therefore,

m∠N = 180 - 80 - 58(sum of angles in a triangle)

m∠N = 42 degrees

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The rent per unit should be $8,354.22 to generate a Net Operating Income (NOI) of $100,000, given the vacancy rate and operating expenses.

The operating expenses are costs that must be deducted from the gross operating income to arrive at the net operating income.

The operating expenses do not include some period expenses, which are indirect costs.

                                                                                            Total

Rent per unit (per month) = $696.19 ($8,354.22/12)   $150,376

Vacancy Rate (5% of Potential Gross Income)                   7,519

Effective Gross Income                                                $142,857

Operating Expenses (30% of Effective Gross Income) 42,857

Net Operating Income (NOI)                                      $100,000

Number of Units 18

Gross operating income = net operating income + operating expenses

Operating expenses = 30% of effective gross income

Net operating income = 70% of effective gross income (100 - 30%)

= $100,000

Effective Gross Income (100%) = $142,857 ($100,000 ÷ 70%)

Vacancy rate = 5% of potential gross income

Effective Gross Income = 95% (100 - 5)

Potential gross income = $150,376 ($142,857 ÷ 95%)

Number of units = 18

Rent per unit = $8,354.22 ($150,376/18)

Rent per month = $696.19 ($8,354.22 ÷ 12)

Thus, a rent of $8,354.22 per unit can generate a Net operating income of $100,000.

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Answer:

A.) All reptiles run fast

Step-by-step explanation:

Tortoises are reptiles that run slow, so they would be a counterexample to the conjecture that all reptiles run fast. This is because tortoises are a type of reptile that do not run fast, even though the conjecture states that all reptiles do.

In general, reptiles are a class of animals that includes many different species. Some reptiles, such as snakes and lizards, are known for their speed and agility. However, other reptiles, such as tortoises and turtles, are not known for their speed and tend to move much slower than other reptiles. This shows that the conjecture that all reptiles run fast is not always true, and tortoises are a counterexample to this conjecture.

In addition to their speed, tortoises are also distinguished by their hard shells and thick legs. They are typically found in warm, dry environments, and they are known for their long lifespan and low metabolic rate. They are also typically herbivores, feeding on a diet of plants and vegetation. This is in contrast to other reptiles, such as snakes and lizards, which are often carnivorous and hunt for their food. Overall, tortoises are a unique and interesting group of reptiles that do not always fit the generalizations made about reptiles.

Answer:

False

Step-by-step explanation:

False. A material in which thermal energy is transferred slowly is actually an insulator. A conductor is a material that easily allows the transfer of thermal energy. This is because conductors have loosely bound electrons that can move freely through the material, allowing heat to be easily transferred. Examples of good conductors include metals such as copper, aluminum, and silver. On the other hand, insulators have tightly bound electrons that do not move easily, making them poor conductors of heat. Examples of good insulators include materials like glass, plastic, and rubber.

Answer:

pls rate as brainliest it will go a long way

Step-by-step explanation:

(x–1)(x+2)

STEP 1

using the first bracket to expand the other

= x(x + 2) –1(x + 2)

= x² + 2x –x –2

= x² + x – 2

Step 2

or by using the other bracket to expand the other

(x – 1)(x + 2)

x(x – 1) + 2(x – 1)

= x² – x + 2x – 2

= x² + x – 2

Answer:

g(x) = 4x - 3

Step-by-step explanation:

f(x) = 2x − 3

g(x) = f(2x)

g(x) = 2(2x) - 3  ==> plugin 2x for x in f(x) in order to get f(2x)

g(x) = 4x - 3

Answer:

Step-by-step explanation:

the lateral area of the drawing the lateral area of the drawing is 40 mi2. Area rectangle = w * l 5 * 2 = 10 mi² (area 1 rectangle) then you multiply by 4 10 * 4 = 40 mi² or 5 * 2 * 4 = 40 mi²

Answer:

  294 m²

Step-by-step explanation:

You want the lateral area of a regular hexagonal prism with side lengths 7 m and height 7 m.

The lateral area is the sum of the areas of the 6 square faces.

Each of the 6 faces is a square 7 m on the edge. Its area is ...

  (7 m)² = 49 m²

There are 6 of these square faces, so their total area is ...

  6 × 49 m² = 294 m²

The lateral area of the prism is 294 m².

The final score is of:

4-2 for the Blue team.

The number of ways that each score could have been obtained is of:

8.

These three bullet points are given:

The possible scores with six goals and the blue team winning are of:

If the team didn't score more than two goals in a row at any point of the game, the difference is of two, hence the score was 4 - 2.

The goals can be arranged as follows:

Then the total number is of ways that the goals could be obtained is of:

3! + 1 + 1 = 8.

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The specified number of New Year's resolutions Harry makes which is 5 more than the resolutions Tim makes, and the total number of resolutions of 13 indicates a word problem with a solution that Harry makes 9 New Year's resolutions.

A word problem is a mathematics or science question, presented using complete sentences, rather that mathematical expressions or science symbols.

A word problem consists of presenting a problem in terms of a real  situation such, with the solution being obtained easiest through the use of mathematical or science procedures.

Let x represent the number of resolutions Tim makes

The number of resolutions Harry makes = x + 5

The number of resolutions Harry and Tim made together = 13

Therefore, we get; x + x + 5 = 13

2·x + 5 = 13

2·x = 13 - 5 = 8

x = 8 ÷ 2 = 4

The number of resolutions Tim makes, x = 4

The number of resolutions Harry makes = x + 5

Therefore, the number of resolutions Harry makes = 4 + 5 = 9

Harry made 9 New Year's resolutions

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