A wheel of cheese has a radius of 7 inches and a height of 3 inches. What is the approximate surface area of this wheel of cheese? Use 3.14 for pi.

Answer:

Clockwise 90°, enlargement

Step-by-step explanation:

Rotation:

    Rotation means turning around a center and from the center to any point on the shape stays same.

Here, the ΔABC is rotated clockwise 90°with it center O.

Dilation:

          This means resizing either by compression, enlargement or contraction.

Here, the ΔABC is enlarged to ΔA'B'C'

Answer:

224.7

Step-by-step explanation:

sin 57 = 98/ ?

? = 98/sin57° = 224.7

Projab is the projection of vector a onto vector b. It is a vector that is perpendicular to b and has the same magnitude as a, and it is the vector that is closest to a in the direction of b.

In R2, the geometric interpretation is that projab is the vector that is obtained by dropping a perpendicular line from the tip of a onto the line containing b.

In R3, the geometric interpretation is that projab is the vector that is obtained by dropping a perpendicular line from the tip of a onto the plane containing b.

The equation for projab is projab = (a.b/|b|^2)b, where a.b is the dot product of a and b, and |b| is the magnitude of b.

The best estimator's error vector, when seen in terms of mean square errors, is orthogonal to all other feasible estimators, according to the orthogonality principle. The orthogonality principle can be expressed in a variety of ways, but it is most frequently used to describe linear estimators.

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The ratio of the number of astronauts on Earth to the total number of astronauts is 7 : 30.

A ratio is a mathematical expression that compares two or more values by dividing the size of one value by the size of another.

Ratios can be expressed in several different forms, including fractions, decimals, or percentages, and can be used to compare quantities, measurements, or other values in a meaningful way.

Ratios provide a way to express the relationship between two or more values in a compact and concise format, and can be used in a variety of fields, including mathematics, science, finance, and engineering.

If the space program has 23 astronauts in outer space and 7 astronauts on Earth, then the ratio of the number of astronauts on Earth to the total number of astronauts is:

7 : (23 + 7) = 7 : 30

You can simplify the ratio to 7/30 or approximately 0.23 or 23%.

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Answer:

[tex]slope = - \frac{8}{5} [/tex]

Step-by-step explanation:

So it looks like on the line, we have two dots.

Let's find those points, starting from the left one.

The left point is: (-1, 4) --- (x1, y1)

The right point is: (4, -4) --- (x2, y2)

**These are in (X, Y) form**

Now to find the slope, you use this equation

[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]

Now let's plug our numbers into this equation

[tex]m = \frac{ - 4 - 4}{4 - ( - 1)} = \frac{ - 8}{5} = - \frac{8}{5} [/tex]

Two negatives make a positive, so 4-(-1) is the same as 4+1.

Answer:

C

Step-by-step explanation:

You are able to simplify both of the 2/8ths and it comes to be 2/8 + 2/8 = 4/8

(8k+k26) after matching, (10k+72k2) because a trinomial cannot be factored 3k2 + 18k - 13

In maths, a coefficient is a cubic, a sequence, or the exponential coefficient of a descriptive word in an expression. Any phrase is acceptable, though digits are frequently used. If the equations are variables, and so the word "parameter" also could refer to the variables themselves. A coefficients is the product of either a number and then a variable. Some occurrences of correlations are: The coefficient as in sentence . The variable is multiplied by it amount when word g has a coefficient of 1. example Since "z" is a factor and the term's interpretation is 6z, the multiplier is 6. The square root of x has a score of one.

given

((8k +  (k2)) -  6) -  ((7 - 10k) -  2k2)

The first term is 3k2 and it has a 3 coefficient.

The coefficient of the middle word, +18k, is 18.

"The constant," the final term, is -13.

Step 1: Add the constant 3 • -13 to the coefficient of the first term to get -39.

Step 2 is to identify two -39 factors whose combined value is equal to the middle term's coefficient of 18, which is 18.

      -39    +    1    =    -38

     -13    +    3    =    -10

     -3    +    13    =    10

     -1    +    39    =    38

(8k+k26) after matching, (10k+72k2) because a trinomial cannot be factored 3k2 + 18k - 13 .

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Answer:

7.8 cm

Step-by-step explanation:

One tenth of a centimeter = [tex]\frac{1}{10} (1 cm)[/tex] = 0.1 cm . This means the answer has to be rounded to 1 decimal place.

Length of BE = Length of ED = [tex]\frac{6}{2}[/tex] = 3 cm

Focus on the triangles AED and CED. These two are right-angled triangles.

In both triangles, sides AE and CE are perpendicular sides, whose lengths will be calculated using Pythagorean Theorem:

Triangle AED:

[tex]AD^{2} = AE^{2} + ED^{2}[/tex]

[tex]AD^{2} - ED^{2} = AE^{2}[/tex]

[tex]AE^{2} = 6^{2} - 3^{2}[/tex]

Taking square root on both sides of the equation to get rid of the square:

[tex]AE = \sqrt{6^{2} -3^{2} }[/tex]

[tex]AE = \sqrt{36 - 9}[/tex]

[tex]AE = \sqrt{27}[/tex] cm

Triangle CED:

[tex]CD^{2} = CE^{2} + ED^{2}[/tex]

[tex]CE^{2} = CD^{2} - ED^{2}[/tex]

[tex]CE^{2} = 4^{2} - 3^{2}[/tex]

Taking square root on both sides of the equation to get rid of the square:

[tex]CE = \sqrt{4^{2} -3^{2} }[/tex]

[tex]CE = \sqrt{16 - 9}[/tex]

[tex]CE = \sqrt{7}[/tex] cm

Length of AC = Length of AE + Length of EC

∴ Length of AC = [tex](\sqrt{27} + \sqrt{7})[/tex] cm

                          = 7.841 cm

  Length of AC = 7.8 cm (Rounded to the nearest tenth of a centimeter)

The sum of the interior angles of polygon A is 1260°.

The sum of angles of the exterior angles of a polygon A is 360°

Polygon A

A polygon with 9 sides is called a nonagon. The sum of interior angles of a Nonagon is 1260°. This can be calculated using the formula (n -2) * 180, where n is the number of sides.

Thus, the sum of the interior angles of polygon A is 1260°.

The sum of the exterior angles of a polygon is 360°.Thus, the sum of angles of the exterior angles of a polygon A is 360°.

Polygon B

Polygon B has 7 sides i.e. n = 7

sum of angles of the interior angles of polygon B = (7-4) * 180 = 900°

Thus, y = 900- 135 - 140 - 150 - 120 - 135 - 120 = 100°

x = 180 - 100 = 80°  (sum of angles on a straight line is 180°)

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Then you have 6 different combination to choose from.

"Information available from the question"

For dessert you can choose

Apple, cherry, blueberry, or peach pie to eat, and milk or juice to drink.

To find the how many different combinations of one pie and one beverage are possible?

Now, According to the question:

To eat: Apple pie, Cherry pie, or peach pie = 3 desserts

To drink: milk or juice = 2

Then you can choose one from each:

Then your choices are:

(apple, milk) (apple, juice) (cherry, milk)(cherry, juice) (peach, milk) and (peach, juice)= 6

Then you have 6 different combination to choose from.

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Answer:

Step-by-step explanation:

The rate of change is just the slope of the equation and/or graph.

for the linear function A, y = 2/3x + 5, the slope (therefore rate of change) is 2/3. For B (I can't make it out that clear), 3/2. That gives the answer for C: 3/2 is greater than 2/3.

Answer:

Rise over run for the first one is x=300 and y=600

(a) The probability that the entire system works is  0.3136

(b) The probability that the component a is not working is 0.3

Probability is a scale between 0 and 1 that represents the possibility of an event happening. An event with probability 1 is guaranteed to happen, while an event with probability 0 is impossible. The number of favorable outcomes divided by the total number of potential outcomes in the sample space yields the probability of an event A, commonly denoted as P(A). The sample space, for a fair six-sided die, is the set of all potential outcomes, such as 1, 2, 3, 4, 5, and 6. The probability of rolling a 4 is 1/6. Numerous disciplines employ probability to make predictions, deduce conclusions, and make judgments in the face of uncertainty.

(a) To find the probability that the entire system works, we need to find the product of the probabilities of the individual components working.

For the components connected in series, A and B, the probability that both work is equal to the product of their individual probabilities:

P(A and B) = P(A) * P(B) = 0.7 * 0.8 = 0.56

For the components connected in series-parallel, C, D, and E, the probability that all three work is equal to the product of their individual probabilities:

P(C and D and E) = P(C) * P(D) * P(E) = 0.8 * 0.8 * 0.9 = 0.576

To find the probability of the entire system working, we need to find the product of the probability of A and B working and the probability of C, D, and E working:

P(system works) = P(A and B) * P(C and D and E) = 0.56 * 0.576 = 0.3136

(b) Given that the system works, the probability that component A is not working would be equal to 1 minus the probability that component A is working:

P(A not working | system works) = 1 - P(A working | system works) = 1 - 0.7 = 0.3

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The complete question is

The Adding and Subtracting Rational Expression Calculator is a free online tool that displays the results of rational number arithmetic operations.

A rational expression is nothing more than the product of two polynomials. In other words, it is a fraction with polynomial numerator and denominator. Rational expressions resemble fractions with variable denominators (and often numerators too).

Adding or subtracting rational expressions involves four steps: All fractions must be written as equivalent fractions with a common denominator. Combine the fractions to form a single fraction with a common denominator. Reduce the complexity of the expression at the top of the fraction. Reduce the fraction to its simplest terms.

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The value of t is 8 and the value of r is 8√2. The solution has been obtained by using trigonometry.

What is trigonometry?

The study of triangle sides, angles, and relationships is the focus of the mathematical field of trigonometry.

We are given a right angled triangle with an angle 45° and the perpendicular measuring 8.

Using trigonometry,

We know that tan theta = opposite side/ adjacent side

So,

⇒tan 45° = 8/t

⇒1 = 8/t (tan 45° = 1)

⇒t = 8

Similarly,

We know that cos theta = adjacent side/hypotenuse

So,

⇒cos 45° = 8/r

⇒1/√2 = 8/r (cos 45° = 1/√2)

⇒r = 8√2

Hence, the value of t is 8 and the value of r is 8√2.

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Since, there are multiple questions so, the question answered above is attached below.

Answer:

The height of the lamp posts is 20.49 m and the distance between them is 70.98 m.

Step-by-step explanation:

Draw a diagram using the given information (see attachment).

[tex]\boxed{\begin{minipage}{7 cm}\underline{Tan trigonometric ratio} \\\\$\sf \tan(\theta)=\dfrac{O}{A}$\\\\where:\\ \phantom{ww}$\bullet$ $\theta$ is the angle. \\ \phantom{ww}$\bullet$ $\sf O$ is the side opposite the angle. \\\phantom{ww}$\bullet$ $\sf A$ is the side adjacent the angle. \\\end{minipage}}[/tex]

Use the tan trigonometric ratio to create two equations for h.

Triangle ACD:

[tex]\implies \tan 30^{\circ}=\dfrac{h}{x}[/tex]

[tex]\implies h=x\tan 30^{\circ}[/tex]

[tex]\implies h=\dfrac{\sqrt{3}}{3}x[/tex]

Triangle BCD:

[tex]\implies \tan 45^{\circ}=\dfrac{h}{x-15}[/tex]

[tex]\implies h=(x-15)\tan 45^{\circ}[/tex]

[tex]\implies h=(x-15)\cdot 1[/tex]

[tex]\implies h=x-15[/tex]

Substitute the second equation into the first equation and solve for x:

[tex]\implies x-15=\dfrac{\sqrt{3}}{3}x[/tex]

[tex]\implies x-\dfrac{\sqrt{3}}{3}x=15[/tex]

[tex]\implies \dfrac{3-\sqrt{3}}{3}x=15[/tex]

[tex]\implies (3-\sqrt{3})x=45[/tex]

[tex]\implies x=\dfrac{45}{3-\sqrt{3}}[/tex]

[tex]\implies x=35.4903810...[/tex]

To find h, substitute the found value of x into the second equation and solve for h:

[tex]\implies h=x-15[/tex]

[tex]\implies h=35.4903810...-15[/tex]

[tex]\implies h=20.4903810...[/tex]

[tex]\implies h=20.49\; \sf m\;\;(2\;d.p.)[/tex]

As the distance between the two lamp posts is 2x:

[tex]\implies 2x=2 \cdot 35.4903810...[/tex]

[tex]\implies 2x=70.9807621...[/tex]

[tex]\implies 2x=70.98\; \sf m\;\;(2\;d.p.)[/tex]

Therefore:

The statements that are true about parallelogram WXYZ:

XD ≅ ZD

∠WXZ ≅ ∠YZX

Consider the following diagram.

The diagonals of parallelogram WXYZ intersect at D.

We know that the property of parallelogram that the diagonals bisect each other.

From this property we get,

XD ≅ ZD

Also, from the definition of parallelogram the opposite sides are equal and parallel.

So, we have

WX and YZ are parallel lines with XY transversal.

So, ∠WXZ ≅ ∠YZX as they are alternate interior angles

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Answer:

If 58% of the people surveyed said YES to a YES or NO question, the number of people who said YES is

58/100 * 6700 = 3886.

The number of people who said NO is

6700 - 3886 = 2814.

Answer:

1 and 10

Step-by-step explanation:

Account #1: one year (because it doubles each year)

Account #2: ten years (100 * 10 = 1000)

Answer:

$ 56.34

Step-by-step explanation:

    height = h = 2. 1m

    diameter = 0.7m

            radius = diameter ÷2

                    r  = 0.7 ÷ 2 = 0.35 m

Substitute the values of r and h in the below mentioned formula and find the surface area of the tank.

[tex]\boxed{Area \ of \ cylindrical \ tank = 2\pi r((r + h)}[/tex]

                                            = 2 * 3.14 * 0.35 (0.35 + 2.1)

                                            = 2 * 3.14 * 0.35 * 2.45

                                            = 5.39 square meter

To find the cost of painting the surface area of tank, multiply the cost of painting per square meter by the total surface area of tank.

Cost of painting = 5.93 * 9.50

                           = $ 56.34

The area of the brick walkway in the front yard is 122 square feet.

An open, flat object with four straight sides and one pair of parallel sides is referred to as a trapezoid or trapezium.

A trapezium's non-parallel sides are referred to as the legs, while its parallel sides are referred to as the bases. The legs of a trapezium can also be parallel. The parallel sides may be vertical, horizontal, or angled.

The altitude is the measurement of the angle perpendicular to the parallel sides.

We know, The area of a trapezoid is,

(1/2)×(sum of the two parallel sides)×height, And The area of a rectangle is (length×width).

From the given, Diagram the total area would be the sum of the area of a rectangle and a trapezoid which is,

= [(15×6) + (1/2)(10 + 6)×4] square feet.

= [90 + 32] square feet.

= 122 square feet.

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The degree of expression will be the highest level of each of the aforementioned individuals' expression, or 6.

It is necessary to multiply, dividing, add, or subtract as mathematics. The following is how an assertion is put together: Number, expression, and mathematical operator The components of a mathematical form include numbers, variable, and functions (such as addition, subtraction, multiplication or division etc.)

It is possible that contrast statements and phrases. An expression, often known like an algebraic expression, is there any mathematical statement that abstract, numbers, and a numerical operation between them. For illustration, the word m in the balanced formula is separated from the parts 4m and 5 by the arithmetic symbol +, as is the variable m in the phrase 4m + 5.

given:

6y⁶-4y³ is the given expression.

6 y⁶ has a degree of 6.

3 is the degree of - 4y³.

However, the level of expression will be the greatest level of the individual expression of the aforementioned, i.e. 6.

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Answer:

Let x be the number of red M&Ms.

Then the number of blue M&Ms is x + 5, the number of yellow M&Ms is x - 9, and the number of brown M&Ms is (1/2)x + 13.

The total number of M&Ms is 135, so we can write an equation:

x + (x + 5) + (x - 9) + (1/2)x + 13 = 135

Simplifying this equation, we get:

3.5x + 9 = 135

Subtracting 9 from both sides, we get:

3.5x = 126

Dividing both sides by 3.5, we get:

x = 36

So there are 36 red M&Ms, 41 blue M&Ms (36 + 5), 27 yellow M&Ms (36 - 9), and 31 brown M&Ms (1/2 * 36 + 13).

Answer:

Step-by-step explanation:

r: the number of red M&Ms

b: the number of blue M&Ms

y: the number of yellow M&Ms

br: the number of brown M&Ms

We can translate the given information into equations:

r + b + y + br = 135 (the total number of M&Ms is 135)

b = r + 5 (there are five more blue M&Ms than red ones)

y = r - 9 (there are nine less yellow M&Ms than red ones)

br = 13 + (1/2)r (there are thirteen more brown M&Ms than half the number of red ones)

We can use equations 2, 3, and 4 to substitute for b, y, and br in equation 1:

r + (r + 5) + (r - 9) + (13 + (1/2)r) = 135

Simplifying this equation, we get:

3.5r + 9 = 135

Subtracting 9 from both sides, we get:

3.5r = 126

Dividing both sides by 3.5, we get:

r = 36

Now that we know the value of r, we can use equations 2, 3, and 4 to find the values of b, y, and br:

b = r + 5 = 36 + 5 = 41

y = r - 9 = 36 - 9 = 27

br = 13 + (1/2)r = 13 + (1/2)(36) = 31

Therefore, the number of red, blue, yellow, and brown M&Ms in the mixture are 36, 41, 27, and 31, respectively.

first off, let's notice that the y-coordinates are the same for both points, meaning is really just a horizontal line, and its slope is 0, however, let's go through the rigamarole

[tex](\stackrel{x_1}{5}~,~\stackrel{y_1}{-3})\qquad (\stackrel{x_2}{8}~,~\stackrel{y_2}{-3}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{-3}-\stackrel{y1}{(-3)}}}{\underset{\textit{\large run}} {\underset{x_2}{8}-\underset{x_1}{5}}} \implies \cfrac{-3 +3}{3} \implies \cfrac{ 0 }{ 3 } \implies \text{\LARGE 0}[/tex]

Answer:

2700

Step-by-step explanation:

turn 2% into a decimal and multiply by 135,000.

The coordinate of the point R of the line segment QS will be (-3.8, -0.4). Then the correct option is A.

Let A (x₁, y₁) and B (x₂, y₂) be a line segment. Then the point P (x, y) divides the line segment in the ratio of m:n. Then we have

x = (mx₂ + nx₁) / (m + n)

y = (my₂ + ny₁) / (m + n)

The endpoints are Q(-6, -2) and S(5, 6). And m:n is 1:4. Then the coordinate of the point R is given as,

x = (5 · 1 + (-6) · 4) / (1 + 4)

x = -3.8

y = (6 · 1 + (-2) · 4) / (1 + 4)

y = -0.4

The coordinate of the point R of the line segment QS will be (-3.8, -0.4). Then the correct option is A.

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The way that increasing the amount of charge on an object affects the electric force it exerts on another charged object is; The electric force increases because the amount of charge has a direct relationship to the force

The amount of charge on an object due to the effect of the force that is exerted on it can be calculated by using the formula :

F = E × q

Where;

F is the electric force.

E is the energy.

q is the charge.

The electric force between charged particles at rest is known as electrostatic force.

The magnitude of the electric force between point charges is directly proportional to the multiplication of the charges and inversely proportional to the distance between them.

Therefore, we conclude that increasing the amount of charge on an object would increase the electric force because the amount of charge has a direct relationship with the force.

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The time complexity is O(1) as the recurrence reduces to a constant.

T(n) = 2T(n/2) + n/log n

T(1) = 1

T(2) = 2T(1) + 2/log 2

= 2 + 2/log 2

T(4) = 2T(2) + 4/log 4

= 2(2 + 2/log 2) + 4/log 4

T(8) = 2T(4) + 8/log 8

= 2(2(2 + 2/log 2) + 4/log 4) + 8/log 8

T(n) = 2^k T(1) + (2^k + 2^(k-1) + ... + 2 + 1)*n/log n

= 2^k + (2^k + 2^(k-1) + ... + 2 + 1)*n/log n

= 2^k + n*Σ_(i=1)^k▒2^i/log n

= 2^k + n/log n*(2^(k+1) - 1)

= 2^k + n/log n*(n/2 - 1)

= (2^k + n/2 - n/log n)*n/log n

= (2n - n/log n)*(log n/n)

= 2 - 1/log n

The time complexity is O(1) as the recurrence reduces to a constant.

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The expression 3a² + 10a + 7 can be completely factored as (a + 7)(3a + 1).

The expression 3a² + 10a + 7 can be factored as a product of two binomials.

To factor this expression, we can find two numbers that multiply to 7 and add up to 10. The only pair of numbers that have this property is 1 and 7. So, we can write:

3a² + 10a + 7 = 3a² + 7a + a + 7

= a(3a + 1) + 7(1 + 3a)

= (a + 7)(3a + 1)

Factorization is the process of breaking down a mathematical expression into simpler, more manageable parts. There are various methods to factorize an expression, including:

Grouping: This method involves grouping terms in pairs and then factoring out a common factor.

Difference of Squares: This method involves factoring the expression into the difference of two squares.

Sum or Difference of Cubes: This method involves factoring the expression into the sum or difference of two cubes.

Using Factor Trees: This method involves finding the prime factorization of the expression and then grouping the factors to find the final answer.

Using Identities: This method involves using various mathematical identities to simplify the expression.

It's best to determine the method to use based on the specific expression you're trying to factorize.

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The BEST estimate for the x-coordinate of the solution to this system is -4

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

The graph

On the graph, we can see that the lines intersect at

Approximately (-4, 3)

This means that the x-cooridnate of the solution is

x = -4

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Answer:

Step-by-step explanation: