PLEASE I ONLY HAVE AN HOUR!!!!

Answer:

:)

Step-by-step explanation:

This is a calculus problem that involves using differentials to estimate the maximum error in the area of a circle given the error in its radius. According to 1, the errors are related by ΔA=drdAΔr=2πrΔr

Therefore, Δr=2πrΔA

If the radius is 21 cm correct to the nearest cm, then the possible error in the radius is ±0.5 cm. Using this value in the formula above, we get ΔA=2π(21)(0.5)≈65.97 cm2

This is the possible maximum error when calculating the area of a circle with radius 21 cm correct to the nearest cm.

The functions f(x) = -x² + 9 and g(x) = 6 - 2x can be plotted on the same system of axes with their intercepts labeled.

To draw the functions f(x) = -x² + 9 and g(x) = 6 - 2x on the same system of axes, we need to determine their intercepts with the x and y-axes.

Intercepts with the x-axis:

To find the x-intercepts, we set y = 0 for each function and solve for x.

For f(x):

0 = -x² + 9

x² = 9

x = ±√9

x = ±3

So, the x-intercepts of f(x) are x = -3 and x = 3.

For g(x):

0 = 6 - 2x

2x = 6

x = 6/2

x = 3

Therefore, the x-intercept of g(x) is x = 3.

Intercepts with the y-axis:

To find the y-intercepts, we set x = 0 for each function and solve for y.

For f(x):

y = -0² + 9

y = 9

So, the y-intercept of f(x) is y = 9.

For g(x):

y = 6 - 2(0)

y = 6

Therefore, the y-intercept of g(x) is y = 6.

Now, we can plot the points (-3, 0), (3, 0), (0, 9), and (0, 6) on the graph. Connect the points with a smooth curve to represent the function f(x) = -x² + 9.

The line representing g(x) = 6 - 2x will be a straight line with a slope of -2 and a y-intercept of 6.

The graph should show the curve of f(x) passing through the points (-3, 0), (3, 0), and (0, 9), and a straight line for g(x) passing through the points (3, 0) and (0, 6).

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The first five terms of the sequence are 2, 6, 12, 20, and 30.

The sequence can be simply represented using the equation [tex]\(a_n = n^2 + n\)[/tex]. We will substitute values of [tex]n[/tex] from 1 to 5 into the equation to find the first five terms:

[tex]\(a_1 = 1^2 + 1 = 2\),\\\(a_2 = 2^2 + 2 = 6\),\\\(a_3 = 3^2 + 3 = 12\),\\\(a_4 = 4^2 + 4 = 20\),\\\(a_5 = 5^2 + 5 = 30\).[/tex]

The concept used in this problem is that of a sequence, which is nothing but simply an ordered list of numbers or terms. In this question, the sequence is defined by the equation [tex]\(a_n = n^2 + n\)[/tex], where [tex]\(a_n\)[/tex] represents the nth term of the sequence.

In order to find specific terms of the sequence, we will substitute different values of [tex]\(n\)[/tex] into the equation and then further evaluate the expression. This will allow us to generate a list of values that form the sequence.

Therefore, the first five terms of the sequence are 2, 6, 12, 20, and 30.

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(a) | BD | bisects | AC | (reason : Given)

(b) |AD| ≅ |CD| (reason: |BD| is the perpendicular bisector of segment AC).

(c) ∠ABD ≅ ∠CBD (reason: | BD |  bisects angle ABC)

(d) ∠A ≅ ∠ C (reason: complementary angles of a right triangle)

Congruent angles are the angles that have equal measure. So all the angles that have equal measure will be called congruent angles.

From the first statement, we will complete the flow chart as follows;

line BD bisects line AC (reason : Given)

line AD is congruent to line CD (reason: line BD is the perpendicular bisector of segment AC)

Angle ABD is congruent to angle CBD (reason: line BD bisects angle ABC)

Angle A is congruent to angle C (reason: angle ABD = angle CBD, and both triangles ABD and CBD are right triangles).

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Given statement solution is :- The final answer, in its simplest form as a mixed number, is 8 5/6.

To subtract mixed numbers, we need to find a common denominator for the fractions involved. In this case, the common denominator is 12.

Converting the whole numbers to fractions:

4 = 4/1

2 = 2/1

Now let's convert the mixed numbers to improper fractions:

7/12 = (7 * 12 + 1) / 12 = 85/12

1/4 = 1 * 4 / 4 = 4/4 = 1

So, the problem becomes: 4/1 + 85/12 - 2/1 - 1/4

To combine the fractions, we need to have a common denominator, which is 12:

(4/1) + (85/12) - (2/1) - (1/4) = (48/12) + (85/12) - (24/12) - (3/12)

Now we can subtract the fractions:

(48/12) + (85/12) - (24/12) - (3/12) = (48 + 85 - 24 - 3) / 12 = 106/12 = 53/6

The result is 53/6. To express it as a mixed number, we divide the numerator (53) by the denominator (6):

53 ÷ 6 = 8 remainder 5

Therefore, the final answer, in its simplest form as a mixed number, is 8 5/6.

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The actual bearing of the flight would be N 16.38° W.

North: 420 mph * cos(15) = 406.6 mph

West: 420 mph * sin(15) = 108.8 mph

The wind's velocity vector, when decomposed into north and west components, would be:

North: -15 mph * cos(25) = -13.6 mph (negative because it's in the south direction)

West: 15 mph * sin(25) = 6.3 mph

Now, add the corresponding components of the airplane and wind vectors:

North: 406.6 mph - 13.6 mph = 393 mph

West: 108.8 mph + 6.3 mph = 115.1 mph

Finally, to get the actual bearing, we can calculate the inverse tangent of the west component over the north component, but in this case, we need to consider the fact that we are dealing with bearings, which are usually measured from the North, moving in a clockwise direction.

Let's calculate the angle:

θ = atan(West/North) = atan(115.1/393) = 16.38°

So, the actual bearing of the flight would be N 16.38° W.

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Answer:

C

Step-by-step explanation:

x + [tex]\frac{3}{4}[/tex] y = 5 ( multiply through by 4 to clear the fraction )

4x + 3y = 20 → (1)

x - [tex]\frac{1}{2}[/tex] y = 0 ( multiply through by 2 to clear the fraction )

2x - y = 0 → (2)

multiplying (2) by 3 and adding to (1) will eliminate y

6x - 3y = 0 → (3)

add (1) and (3) term by term to eliminate y

(4x + 6x) + (3y - 3y) = 20 + 0

10x + 0 = 20

10x = 20 ( divide both sides by 10 )

x = 2

Answer:

12 km (565m)

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

Simply substitute x = 2 & y = -1 into the function:

[tex]f(2,-1) =[/tex] [tex]\\\sf{3x + 4y - 8[/tex]

               [tex]3(2) + 4(-1) - 8[/tex]

                [tex]6 - 4 - 8[/tex] = -6

Therefore, the value of f(2, -1) for the function f(x, y) = 3x + 4y - 8 is -6.

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Answer:

Part A: To find the x-intercepts of the graph of f(x), we set f(x) equal to zero and solve for x:

2x² - x - 10 = 0

To factor this quadratic equation, we look for two numbers that multiply to give -20 and add up to -1 (the coefficient of the x-term). The numbers -5 and 4 satisfy these conditions:

2x² - 5x + 4x - 10 = 0

x(2x - 5) + 2(2x - 5) = 0

(x + 2)(2x - 5) = 0

Setting each factor equal to zero gives us:

x + 2 = 0 or 2x - 5 = 0

Solving these equations, we find:

x = -2 or x = 5/2

Therefore, the x-intercepts of the graph of f(x) are -2 and 5/2.

Part B: To determine whether the vertex of the graph of f(x) is a maximum or minimum, we can look at the coefficient of the x² term. Since the coefficient is positive (2), the parabola opens upwards, and the vertex represents a minimum point.

To find the coordinates of the vertex, we can use the formula x = -b / (2a), where a and b are the coefficients of the x² and x terms, respectively.

In this case, a = 2 and b = -1:

x = -(-1) / (2 * 2) = 1/4

To find the corresponding y-coordinate, we substitute this x-value back into the equation:

f(1/4) = 2(1/4)² - 1/4 - 10

f(1/4) = 1/8 - 1/4 - 10

f(1/4) = -81/8

Therefore, the vertex of the graph of f(x) is a minimum and has coordinates (1/4, -81/8).

Part C: To graph f(x), we can use the information obtained in Part A and Part B.

1. Plot the x-intercepts: Mark -2 and 5/2 on the x-axis.

2. Plot the vertex: Mark (1/4, -81/8) as the lowest point on the graph.

3. Determine additional points: Choose a few more x-values, calculate the corresponding y-values using the equation f(x) = 2x² - x - 10, and plot these points.

4. Draw a smooth curve: Connect the plotted points with a smooth curve, keeping in mind that the parabola opens upward.

Using these steps, you can graph f(x) and accurately represent the x-intercepts, vertex, and overall shape of the parabolic curve.

Hello!

So the 2 angles of the base are equal, so:

(180 - 74)/2 = 53° one of the 2 angles

          74°

          /\
        /    \
      /        \
    /            \

53°             53°

180 - 74*2 = 32°

          32°

          /\
        /    \
      /        \
    /            \

74°             74°

So the others angles can be:

- 74° and 53°

- 74° and 32°

Answer: 1/ 3 ^9

Step-by-step explanation:

Answer:

1/39

Step-by-step explanation:

3-9=1/39

The answer is 0ne over three exponent nine

Using cosine Rule, the value of the requested angle is 33.12°

Since the three sides are given, we use the Cosine rule :

Hence,

CosA = (10²+4²-7²) / (2 × 10 × 4)

Cos A = 67/80

Cos A = 0.8375

A = [tex] {cos}^{ - 1} (0.8375)[/tex]

A = 33.12

Therefore, the value of the missing angle is 33.12

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Answer:

To find the sum of x₁ and x₂, we need to solve the system of equations:

y = x² ...(1)

y = 1,002x - 2,000 ...(2)

Since both equations are equal to y, we can set them equal to each other:

x² = 1,002x - 2,000

To solve this quadratic equation, we can rearrange it into standard form:

x² - 1,002x + 2,000 = 0

Now, we can factorize the equation:

(x - 2)(x - 1,000) = 0

Setting each factor equal to zero, we get two solutions:

x - 2 = 0 => x = 2

x - 1,000 = 0 => x = 1,000

The sum of distinct solutions x₁ and x₂ to the system of equations y = x² and y = 1,002x - 2,000 is 1,002.

The problem here involves finding the solutions to the system of equations. Those equations are y = x² and y = 1,002x - 2,000. To solve this system of equations, we can set the two equations equal to each other, because they both equal y.

So, we have: x² = 1,002x - 2,000. Rearranging, we get x² - 1,002x + 2,000 = 0. This is a quadratic equation, and we can solve for x using the quadratic formula: x = [1,002 ± sqrt((1,002)² - 4*1*2,000)] / (2*1). This will yield 2 solutions for x, let's call them x₁ and x₂.

The question asks for the sum of x₁ and x₂. In a quadratic equation ax² + bx + c = 0, the sum of solutions is given by -b/a. Here, a = 1 and b = -1,002, so the sum of solutions x₁ and x₂ is -(-1,002)/1 = 1,002.

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Answer:

----------------------

We have two similar triangles:

The ratio of corresponding sides of similar figures is same.

Set up equal ratios and find the missing side:

Based on the analysis, the equations that are equivalent to the original equation A = h(b1 + b2) are options A and B

To determine which equations are equivalent to the equation A = h(b1 + b2), we need to simplify and compare each equation to the original equation. Let's go through each option:

A. A = h(b1 + b2)

This is the original equation, so it is equivalent to itself.

B. 2Ahb1 + 52

To check if this equation is equivalent to the original, we can simplify it:

2Ahb1 + 52 = 2A(hb1) + 52 = 2Ahb1 + 52

The equation is equivalent to the original equation.

C. b1 - 24 - b2

To check if this equation is equivalent to the original, we can simplify it:

b1 - 24 - b2 = b1 - b2 - 24

This equation is not equivalent to the original equation since it does not involve the variable A or the term hb1.

D. A - hb2

To check if this equation is equivalent to the original, we can simplify it:

A - hb2 = h(b1 + b2) - hb2 = hb1 + hb2 - hb2 = hb1

This equation is not equivalent to the original equation since it only involves the variable b1 and not A.

E. bl

This equation is not equivalent to the original equation since it only involves the variable bl, which is not present in the original equation.

Based on the analysis, the equations that are equivalent to the original equation A = h(b1 + b2) are options A and B.

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Answer:

Assuming that a movie has strong marketing and positive reviews, it is reasonable to expect that it could earn $16 million in its opening weekend.

Step-by-step explanation:

The question of when a movie will earn $16 million is a complex one that depends on a variety of factors. The success of a film is influenced by its marketing, critical reception, and competition from other movies in the marketplace. However, there are some general trends that can be observed when it comes to box office performance.

Typically, the first week of a movie's release is the most important for earning revenue. This is because theaters often give priority to new releases and allocate more screens to them.

The improper form of [tex]1 \frac{1}{2}[/tex] is 3/2 ([tex]\frac{3}{2}[/tex])

I hope this helps!

Answer: 3/2

Step-by-step explanation:

The measure of angle D of the given Kite is: 127°

From the diagram, the figure represents a kite.

Properties of a kite are:

- Two pairs of adjacent sides are equal.

- Two diagonals intersect each other at right angles.

- The longer diagonal bisects the shorter diagonal.

- The angles opposite to the main diagonal are equal.

Thus:

The angle B = the angle D

The sum of all angles of a quadrilateral = 360

Given: ∠A = 36 and ∠C = 70

Thus:

2∠D = 360 - (36 + 70)

2∠D = 254

∠D = 127°

So, the measure of angle D = 127°

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Answer:

Step-by-step explanation:

4 dozen = 48 cupcakes

The number must be odd over 48

Number must be multiple of 3 + 2

so:

With the number x:
x = 2a + 1 = 3b + 2 = 4c + 3 =?

2a + 1 = 3b + 2 = 4c + 3

2a + 1 = 59

3b + 2 = 59

4c + 3 = 59

Answer: 59

Step-by-step explanation:

48/2=24

24-3=21

21/7=3

3*19.9999999999997=59

The measure of the angle B is 32. 0 degrees

To solve the given triangle, we need to know the different trigonometric identities and their ratios.

We have that these identities are;

From the information given, we have that;

Opposite side of angle B = 5

Hypotenuse side = 9.43

Using the sine identity, we get that;

sin B = 5/9.43

Divide the values, we have;

sin B= 0.5302

Find the inverse value of the sine identity and then substitute

B = 32. 0 degrees

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Answer:  the temperature drop from day to night in the city is 31°C.

Step-by-step explanation:

o calculate the temperature drop from day to night, we need to find the difference between the average daily high temperature and the average nightly low temperature.

Temperature drop = Average daily high temperature - Average nightly low temperature

Temperature drop = (-9°C) - (-40°C)

Temperature drop = -9°C + 40°C

Temperature drop = 31°C

The simplified expression is m^1 or simply m.

To simplify the expression −m^(-8) * m^9 without using negative exponents, we can utilize the properties of exponents.

First, let's deal with the negative exponent. A negative exponent indicates that the term should be moved to the denominator. So, we can rewrite −m^(-8) as 1/m^8.

Now, we can simplify the expression further: 1/m^8 * m^9.

When multiplying terms with the same base, we add the exponents. In this case, we have m^(-8) * m^9, which becomes m^(-8 + 9) = m^1 = m.

Finally, multiplying 1/m^8 by m gives us (1/m^8) * m = 1/m^(8-1) = 1/m^7.

Therefore, the simplified expression is 1/m^7, where m is the variable restricted to those numbers for which the expression is defined. By eliminating the negative exponent and combining like terms, we've simplified the expression without using negative exponents.

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Answer:

446.95m²

Step-by-step explanation:

10+9+13.45=32.5

32.5x11=356.95

9x10=90

356.95+90=446.95

Among the given answer choices, the correct option that represents this range is "0 100 200 none of the answer choices".

To determine the range of the number of RVs that need to be sold each month for the company to make a profit, we need to consider the profit function and find the values of x that result in a positive profit.

The profit function is given by P(x) = -50x + 20,000x - 1,500,000.

To make a profit, the value of P(x) must be greater than zero (P(x) > 0). We can set up the inequality:

-50x + 20,000x - 1,500,000 > 0.

Combining like terms, we have:

19,950x - 1,500,000 > 0.

Now, let's solve this inequality for x:

19,950x > 1,500,000.

Dividing both sides by 19,950, we get:

x > 1,500,000 / 19,950.

Simplifying the right side, we have:

x > 75.

The range of the number of RVs that need to be sold each month for the company to make a profit is x > 75.

Among the given answer choices, the correct option that represents this range is "0 100 200 none of the answer choices".

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The distance between Basti and Cian is approximately 138.2 ft. Option D

To find the distance between Basti and Cian, we can use the Law of Sines, which relates the lengths of sides to the sines of their opposite angles in a triangle.

Let's label the points: A, B, and C. Ali is at point A, Basti is at point B, and Cian is at point C.

Given:

Angle ABC = 50 degrees (angle opposite side AC)

Angle BAC = 60 degrees (angle opposite side BC)

Ali is 150 ft away from Basti (side AB)

We want to find the distance between Basti and Cian, which is side BC.

Using the Law of Sines, we have:

BC/sin(50) = AB/sin(60)

Substituting the known values:

BC/sin(50) = 150/sin(60)

To find BC, we can rearrange the equation:

BC = (150/sin(60)) * sin(50)

Using a calculator to evaluate the expression:

BC ≈ 138.2 ft

Option D is correct.

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The expression (-9x)^4 can be represented as -6561x^3 without using exponents.

To express the expression (-9x)^4 without using exponents, we can expand it by multiplying the base (-9x) four times using the multiplication property.

(-9x)^4 = (-9x) * (-9x) * (-9x) * (-9x)

To simplify this expression, we can multiply the terms together, taking care to apply the rules of multiplication:

(-9x) * (-9x) = (-9 * -9) * (x * x) = 81 * x^2 = 81x^2

So, by substituting this result back into the original expression, we get:

(-9x)^4 = 81x^2 * (-9x) = -6561 x^3

Therefore, the expression (-9x)^4 can be represented as -6561x^3 without using exponents.

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The measure of angel BDC in this problem is given as follows:

m < BDC = 43º.

The angle measures for this problem are given as follows:

As the figure is a rectangle, these two angles are complementary, hence the value of x is given as follows:

7x + 1 + 9x - 7 = 90

16x = 96

x = 6.

Then the measure of angle BDC is given as follows:

m < BDC = 7(6) + 1

m < BDC = 43º.

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Assuming that you want this to be expanded, simply multiply each term in the first set of parentheses with each term in the second parentheses:

(-2x + 10) (-9x + 5)

18x^2 - 10x - 90x + 15

18x^2 - 100x + 15

If the question, instead, is asking you to find the x-intercepts, set the expression to zero and solve:

0 = (-2x + 10) (-9x + 5)

0 = -9x + 5 <- divide -2x+10 on all sides

5/9 = x

OR

0 = -2x + 10

5 = x

Answer:

(-2x + 10) (-9x + 5) is a polynomial expression that represents the product of two binomials. To solve this expression, you can use the FOIL method, which stands for First, Outer, Inner, Last.

FOIL method:

First: multiply the first terms of each binomial (-2x and -9x) to get 18x^2

Outer: multiply the outer terms of each binomial (-2x and 5) to get -10x

Inner: multiply the inner terms of each binomial (10 and -9x) to get -90x

Last: multiply the last terms of each binomial (10 and 5) to get 50

Then, combine like terms to get the final expression:

(-2x + 10) (-9x + 5) = 18x^2 - 100x - 90x + 50 = 18x^2 - 190x + 50

Step-by-step explanation:

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