Steven earns extra money babysitting. He charges $24.75 for 3 hours and $66.00 for 8 hours. Enter an equation to represent the relationship. Let x represent the number of hours Steven babysits and y represent the amount he charges.

Answer:

What are you trying to find???

Step-by-step explanation:

If it is median, then it is the line in the middle of the box, which is on 19.

The solution to the first logarithmic equation is x = 3. The solution to the second logarithmic equation is x = 84.

For the first logarithmic equation, we have: log(5x) = log(2x + 9)

By setting the logarithms equal, we can eliminate the logarithms:5x = 2x + 9 and now we solve for x:

5x - 2x = 9

3x = 9

x = 3

Therefore, the solution to the first logarithmic equation is x = 3.

For the second logarithmic equation, we have: -6 log3(x - 3) = -24

Dividing both sides by -6, we get: log3(x - 3) = 4

By converting the logarithmic equation to exponential form, we have:

3^4 = x - 3

81 = x - 3

x = 84

Therefore, the solution to the second logarithmic equation is x = 84.

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The probability of getting a 2 or 1 when rolling a single fair four-sided die is 2/4 or 1/2. There are 4 possible outcomes in total.

When rolling a fair four-sided die, each face has an equal probability of landing face up. Since we are interested in the probability of getting a 2 or 1, we need to determine how many favorable outcomes there are.

In this case, there are two favorable outcomes: rolling a 1 or rolling a 2. Since the die has four sides in total, the probability of each favorable outcome is 1/4.

To calculate the probability of getting a 2 or 1, we add the individual probabilities together:

Probability = Probability of rolling a 2 + Probability of rolling a 1 = 1/4 + 1/4 = 2/4 = 1/2

Therefore, the probability of getting a 2 or 1 is 1/2.

As for the total number of possible outcomes, it is equal to the number of sides on the die, which in this case is 4.

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Answer:

5

Step-by-step explanation:

let x = missing exponent

x - 2 + 1 = 4

x -1 = 4

x = 5

After 10 years, around 612.34 g of the initial sample will remain based on the given decay function.

(a) After 10 years, approximately 612.34 g of the sample will be left.

To find the amount of the sample remaining after 10 years, we substitute t = 10 into the given function A(t) = 800e^(-0.028t):

A(10) = 800e^(-0.028 * 10)

      = 800e^(-0.28)

      ≈ 612.34 g (rounded to the nearest hundredth)

Therefore, after 10 years, approximately 612.34 g of the initial sample will be left.

After 10 years, around 612.34 g of the initial sample will remain based on the given decay function.

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dt = 6t * exy + (3t²) * exy * (dy/dt)

To find dt using the chain rule, we'll start by differentiating Z with respect to t.

Given: Z = xexy, x = 3t², and y is a variable.

First, let's express Z in terms of t.

Substitute the value of x into Z:
Z = (3t²) * exy

Now, we can apply the chain rule.

1. Differentiate Z with respect to t:
dZ/dt = d/dt [(3t²) * exy]

2. Apply the product rule to differentiate (3t²) * exy:
dZ/dt = (d/dt [3t²]) * exy + (3t²) * d/dt [exy]

3. Differentiate 3t² with respect to t:
d/dt [3t²] = 6t

4. Differentiate exy with respect to t:
d/dt [exy] = exy * (dy/dt)

5. Substitute the values back into the equation:
dZ/dt = 6t * exy + (3t²) * exy * (dy/dt)

Finally, we have expressed the derivative of Z with respect to t, which is dt. So, dt is equal to:
dt = 6t * exy + (3t²) * exy * (dy/dt)

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Answer:

Step-by-step explanation:

To find the missing quantity in the formula for future value, A = P(1 + rt), where A = $2,160, r = 5%, and t = 4 years, we can rearrange the formula to solve for P (the initial principal or present value).

The formula becomes:

A = P(1 + rt)

Substituting the given values:

$2,160 = P(1 + 0.05 * 4)

Simplifying:

$2,160 = P(1 + 0.20)

$2,160 = P(1.20)

To isolate P, divide both sides of the equation by 1.20:

$2,160 / 1.20 = P

P ≈ $1,800

Therefore, the missing quantity, P, is approximately $1,800.

To find the y-intercept of the given equation, we need to set x = 0 and evaluate the equation V(x).

When x = 0, the equation becomes:

V(0) = 500(0)^2 - 500(0) + 125,000

= 0 - 0 + 125,000

= 125,000

Therefore, the y-intercept is 125,000.

In terms of the value of the home, the y-intercept represents the initial value of the home when x = 0, which in this case is $125,000. This means that in the year 2020 (x = 0), the value of the home is $125,000.

Answer:

5a. V = (1/3)π(8²)(15) = 320π in.³

5b. V = about 1,005.3 in.³

f(a + 2) is represented as -3a^2 - 12a - 5.

To determine f(a + 2) when f(x) = -3x^2 + 7, we substitute (a + 2) in place of x in the given function:

f(a + 2) = -3(a + 2)^2 + 7

Expanding the equation further:

f(a + 2) = -3(a^2 + 4a + 4) + 7

Now, distribute the -3 across the terms within the parentheses:

f(a + 2) = -3a^2 - 12a - 12 + 7

Combine like terms:

f(a + 2) = -3a^2 - 12a - 5

Therefore, f(a + 2) is represented as -3a^2 - 12a - 5.

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Hello !

Answer:

[tex]\Large \boxed{\sf V_{\sf hemisphere}=486\pi\ mm^3}[/tex]

Step-by-step explanation:

The volume of a sphere is given by [tex]\sf V_{\sf sphere}=\frac{4}{3} \pi r^3[/tex] where r is the radius.

Moreover, the volume of a hemisphere is half the volume of a sphere, so :

[tex]\sf V_{\sf hemisphere}=\dfrac{1}{2} V_{sphere}\\\\\sf V_{\sf hemisphere}=\dfrac{2}{3} \pi r^3[/tex]

Given :

Let's replace r with its value in the previous formula :

[tex]\sf V_{\sf hemisphere}=\frac{2}{3} \times\pi \times 9^3\\\sf V_{\sf hemisphere}=\frac{2}{3} \times 729\times\pi\\\boxed{\sf V_{\sf hemisphere}=486\pi\ mm^3}[/tex]

Have a nice day ;)

There are 20,160 different six-letter permutations that can be formed from the first eight letters of the alphabet.

There are 70 different signals that can be made by hoisting four yellow flags, two green flags, and two red flags on a ship's mast at the same time.

To determine the number of six-letter permutations that can be formed from the first eight letters of the alphabet, we need to calculate the number of ways to choose 6 letters out of the available 8 and then arrange them in a specific order.

The number of ways to choose 6 letters out of 8 is given by the combination formula "8 choose 6," which can be calculated as follows:

C(8, 6) = 8! / (6! * (8 - 6)!) = 8! / (6! * 2!) = (8 * 7) / (2 * 1) = 28.

Now that we have chosen 6 letters, we can arrange them in a specific order, which is a permutation. The number of ways to arrange 6 distinct letters is given by the formula "6 factorial" (6!). Thus, the number of six-letter permutations from the first eight letters of the alphabet is:

28 * 6! = 28 * 720 = 20,160.

Therefore, there are 20,160 different six-letter permutations that can be formed from the first eight letters of the alphabet.

Now let's move on to the second question regarding the number of different signals that can be made by hoisting flags on a ship's mast. In this case, we have 4 yellow flags, 2 green flags, and 2 red flags.

To find the number of different signals, we need to calculate the number of ways to arrange these flags. We can do this using the concept of permutations with repetitions. The formula to calculate the number of permutations with repetitions is:

n! / (n₁! * n₂! * ... * nk!),

where n is the total number of objects and n₁, n₂, ..., nk are the counts of each distinct object.

In this case, we have a total of 8 flags (4 yellow flags, 2 green flags, and 2 red flags). Applying the formula, we get:

8! / (4! * 2! * 2!) = (8 * 7 * 6 * 5) / (4 * 3 * 2 * 1) = 70.

Therefore, there are 70 different signals that can be made by hoisting four yellow flags, two green flags, and two red flags on a ship's mast at the same time.

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Answer:  x to the power of x+c

Step-by-step explanation:

Let I =∫xx (logex)dx

The missing angle measures in parallelogram RSTU are:

The opposite angles of the parallelogram are the same.

From the diagram:

∠S = ∠U and ∠R = ∠T

Given:

Since the sum of angles in a quadrilateral is 360 degrees, hence:

[tex]\angle\text{R}+\angle\text{S}+\angle\text{T}+\angle\text{U} = 360[/tex]

Since ∠R = ∠T, then:

[tex]\angle\text{Y}+\angle\text{S}+\angle\text{T}+\angle\text{U} = 360[/tex]

[tex]2\angle\text{T} + 70+70 = 360[/tex]

[tex]2\angle\text{T} =360-140[/tex]

[tex]2\angle\text{T} = 220[/tex]

[tex]\angle\text{T} = \dfrac{220}{2}[/tex]

[tex]\bold{\angle T = 110^\circ}[/tex]

Since ∠T = ∠R, then ∠R = 110°

Hence, m∠R = 110°, m∠T = 110°, m∠U = 70°. Option B is correct.

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Answer: f(-6) = 44

Step-by-step explanation:

You replace every x with -6

2(-6) squared +  5(-6) - -6/3

36 x 2 -30 + 2

72 - 30 + 2

42 + 2

44

The events of Jeremy's SAT score and his ACT score are independent.

Two events are considered independent if the outcome of one event does not affect the outcome of the other. In this case, Jeremy's SAT score of 1350 and his ACT score of 23 are independent events because the scores he achieved on the SAT and ACT are separate and unrelated assessments of his academic abilities.

The SAT and ACT are two different standardized tests used for college admissions in the United States. Each test has its own scoring system and measures different aspects of a student's knowledge and skills. The fact that Jeremy scored 1350 on the SAT does not provide any information or influence his subsequent performance on the ACT. Similarly, his ACT score of 23 does not provide any information about his SAT score.

Since the SAT and ACT are distinct tests and their scores are not dependent on each other, the events of Jeremy's SAT score and ACT score are considered independent.

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The answer cannot be provided in one row as the specific transformation steps and calculations are not provided in the question.

The given problem involves transforming the function f(x) using Legendre's polynomial function.

Legendre's polynomial function is a series of orthogonal polynomials used to approximate and transform functions.

In this case, the function f(x) is transformed using Legendre's polynomial function, which involves expressing f(x) as a linear combination of Legendre polynomials.

The specific steps and calculations required to perform this transformation are not provided, but the result of the transformation will be a new representation of the function f(x) in terms of Legendre polynomials.

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Answer:

AM: 8.6 units

BM: 8.6 units

M is the center

Step-by-step explanation:

We are given that the diameter of a circle is AB, where point A is at (-1, -9) and point B is (-11, 5).

We know that point M, which is at (-6, -2) is on AB. We want to know if it is the center of the circle.

If it is the center, then it means that the distance (measure) of AM is the same as the distance (measure) of BM.

Recall that the distance formula is [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex], where [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] are points.

The endpoints are point A and point M. We can label the values of the points to get:

[tex]x_1=-1\\y_1=-9\\x_2=-6\\y_2=-2[/tex]

Now, plug them into the formula.

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

[tex]d=\sqrt{(-6--1)^2+(-2--9)^2}[/tex]

[tex]d=\sqrt{(-6+1)^2+(-2+9)^2}[/tex]

[tex]d=\sqrt{(-5)^2+(7)^2}[/tex]

[tex]d=\sqrt{25+49}[/tex]

[tex]d=\sqrt{74}[/tex] ≈ 8.6 units

The endpoints are point B and point M. We can label the values and get:

[tex]x_1=-11\\y_1=5\\x_2=-6\\y_2=-2[/tex]

Now, plug them into the formula.

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

[tex]d=\sqrt{(-6--11)^2+(-2-5)^2}[/tex]

[tex]d=\sqrt{(-6+11)^2+(-2-5)^2}[/tex]

[tex]d=\sqrt{(5)^2+(-7)^2}[/tex]

[tex]d=\sqrt{25+49}[/tex]

[tex]d=\sqrt{74}[/tex] ≈ 8.6 units.

Since the length of AM an BM are the same, M is the center of the circle.

The normal vector of the desired plane is (6, 0, -12), and a scalar equation for the plane is 6x - 12z + k = 0, where k is a constant that can be determined by substituting the coordinates of one of the given points, such as M(1, 2, 3).

A scalar equation for the plane through points M(1, 2, 3) and N(3, 2, -1) that is perpendicular to the plane with equation 3x + 2y + 6z + 1 = 0 is:

3x + 2y + 6z + k = 0,

where k is a constant to be determined.

To find a plane perpendicular to the given plane, we can use the fact that the normal vector of the desired plane will be parallel to the normal vector of the given plane.

The given plane has a normal vector of (3, 2, 6) since its equation is 3x + 2y + 6z + 1 = 0.

To determine the normal vector of the desired plane, we can calculate the vector between the two given points: MN = N - M = (3 - 1, 2 - 2, -1 - 3) = (2, 0, -4).

Now, we need to find a scalar multiple of (2, 0, -4) that is parallel to (3, 2, 6). By inspection, we can see that if we multiply (2, 0, -4) by 3, we get (6, 0, -12), which is parallel to (3, 2, 6).

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For strings of length 7 with no repeated characters, there are 1,814,400 possible passwords. For strings of length 6 with no repeated characters and the first character not being a special character, there are 30,240 possible passwords.

To compute the number of passwords that satisfy the given constraints, let's analyze each case separately:

(i) Strings of length 7 with no repeated characters:

In this case, the first character can be any character except a special character. The remaining six characters can be chosen from the set of digits, special characters, or letters, with no repetition.

1. First character: Any character except a special character, so there are 10 choices.

2. Remaining characters: 10 choices for the first position, 9 choices for the second position, 8 choices for the third position, and so on until 5 choices for the sixth position.

Therefore, the total number of passwords that satisfy the constraints for strings of length 7 is:

10 * 10 * 9 * 8 * 7 * 6 * 5 = 1,814,400 passwords.

(ii) Strings of length 6 with no repeated characters and the first character not being a special character:

In this case, the first character cannot be a special character, so there are 10 choices for the first character (digits or letters). The remaining five characters can be chosen from the set of digits, special characters, or letters, with no repetition.

1. First character: Any digit (0-9) or letter (a-z, A-Z), so there are 10 choices.

2. Remaining characters: 10 choices for the second position, 9 choices for the third position, 8 choices for the fourth position, and so on until 6 choices for the sixth position.

Therefore, the total number of passwords that satisfy the constraints for strings of length 6 is:

10 * 10 * 9 * 8 * 7 * 6 = 30,240 passwords.

Note: It seems there's a typo in the "Special characters" set definition. The third character, "8. #\", appears to be a combination of characters rather than a single character.

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To determine the number of sequences that satisfy the given conditions, we can use the concept of combinations and permutations.

(a) There are no restrictions:

Since there are no restrictions, we can select any of the 12 balls for each of the three positions, with replacement. Therefore, the number of sequences is 12^3 = 1728.

(b) The first ball is red, the second is yellow, and the third is green:

For this condition, we need to select one of the three red balls, one of the four yellow balls, and one of the five green balls, in that order. The number of sequences is 3 * 4 * 5 = 60.

(c) The first ball is red, and the second and third balls are green:

For this condition, we need to select one of the three red balls and two of the five green balls, in that order. The number of sequences is 3 * 5C2 = 3 * (5 * 4) / (2 * 1) = 30.

(d) Exactly two balls are yellow:

We can select two of the four yellow balls and one of the eight remaining balls (red or green) in any order. The number of sequences is 4C2 * 8 = (4 * 3) / (2 * 1) * 8 = 48.

(e) All three balls are green:

Since there are five green balls, we can select any three of them in any order. The number of sequences is 5C3 = (5 * 4) / (2 * 1) = 10.

(f) All three balls are the same color:

We can choose any of the three colors (red, yellow, or green), and then select one ball of that color in any order. The number of sequences is 3 * 1 = 3.

(g) At least one of the three balls is red:

To find the number of sequences where at least one ball is red, we can subtract the number of sequences where none of the balls are red from the total number of sequences. The number of sequences with no red balls is 8^3 = 512. Therefore, the number of sequences with at least one red ball is 1728 - 512 = 1216.

In summary:

(a) 1728 sequences

(b) 60 sequences

(c) 30 sequences

(d) 48 sequences

(e) 10 sequences

(f) 3 sequences

(g) 1216 sequences

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Answer:

(1, 0), (3, 2), (5, 0)

Step-by-step explanation:

To find the vertices of the triangle given the midpoints of its sides, we can use the midpoint formula:

[tex]\boxed{\begin{minipage}{7.4 cm}\underline{Midpoint between two points}\\\\Midpoint $=\left(\dfrac{x_2+x_1}{2},\dfrac{y_2+y_1}{2}\right)$\\\\\\where $(x_1,y_1)$ and $(x_2,y_2)$ are the endpoints.\\\end{minipage}}[/tex]

Let the vertices of the triangle be:

Let the midpoints of the sides of the triangle be:

Since D is the midpoint of AB:

[tex]\left(\dfrac{x_B+x_A}{2},\dfrac{y_B+y_A}{2}\right)=(2,1)[/tex]

[tex]\implies \dfrac{x_B+x_A}{2}=2 \qquad\textsf{and}\qquad \dfrac{y_B+y_A}{2}\right)=1[/tex]

[tex]\implies x_B+x_A=4\qquad\textsf{and}\qquad y_B+y_A=2[/tex]

Since E is the midpoint of BC:

[tex]\left(\dfrac{x_C+x_B}{2},\dfrac{y_C+y_B}{2}\right)=(4,1)[/tex]

[tex]\implies \dfrac{x_C+x_B}{2}=4 \qquad\textsf{and}\qquad \dfrac{y_C+y_B}{2}\right)=1[/tex]

[tex]\implies x_C+x_B=8\qquad\textsf{and}\qquad y_C+y_B=2[/tex]

Since F is the midpoint of AC:

[tex]\left(\dfrac{x_C+x_A}{2},\dfrac{y_C+y_A}{2}\right)=(3,0)[/tex]

[tex]\implies \dfrac{x_C+x_A}{2}=3 \qquad\textsf{and}\qquad \dfrac{y_C+y_A}{2}\right)=0[/tex]

[tex]\implies x_C+x_A=6\qquad\textsf{and}\qquad y_C+y_A=0[/tex]

Add the x-value sums together:

[tex]x_B+x_A+x_C+x_B+x_C+x_A=4+8+6[/tex]

[tex]2x_A+2x_B+2x_C=18[/tex]

[tex]x_A+x_B+x_C=9[/tex]

Substitute the x-coordinate sums found using the midpoint formula into the sum equation, and solve for the x-coordinates of the vertices:

[tex]\textsf{As \;$x_B+x_A=4$, then:}[/tex]

[tex]x_C+4=9\implies x_C=5[/tex]

[tex]\textsf{As \;$x_C+x_B=8$, then:}[/tex]

[tex]x_A+8=9 \implies x_A=1[/tex]

[tex]\textsf{As \;$x_C+x_A=6$, then:}[/tex]

[tex]x_B+6=9\implies x_B=3[/tex]

Add the y-value sums together:

[tex]y_B+y_A+y_C+y_B+y_C+y_A=2+2+0[/tex]

[tex]2y_A+2y_B+2y_C=4[/tex]

[tex]y_A+y_B+y_C=2[/tex]

Substitute the y-coordinate sums found using the midpoint formula into the sum equation, and solve for the y-coordinates of the vertices:

[tex]\textsf{As \;$y_B+y_A=2$, then:}[/tex]

[tex]y_C+2=2\implies y_C=0[/tex]

[tex]\textsf{As \;$y_C+y_B=2$, then:}[/tex]

[tex]y_A+2=2 \implies y_A=0[/tex]

[tex]\textsf{As \;$y_C+y_A=0$, then:}[/tex]

[tex]y_B+0=2\implies y_B=2[/tex]

Therefore, the coordinates of the vertices A, B and C are:

Answer:

time = 101.84 years

Step-by-step explanation:

The formula for compound interest is given by:

A(t) = P(1 + r/n)^(nt), where

Thus, we can plug in 35007 for A(t), 2500 for P, 0.026 for r, and 4 for n in the compound interest formula to find t, the time in years (rounded to the nearest hundredth) that it will take for the savings account to reach 35007:

Step 1:  Plug in values for A(t), P, r, and n.  Then simplify:

35007 = 2500(1 + 0.026/4)^(4t)

35007 = 2500(1.0065)^(4t)

Step 2:  Divide both sides by 2500:

(35007 = 2500(1.0065)^4t)) / 2500

14.0028 = (1.0065)^(4t)

Step 3:  Take the log of both sides:

log (14.0028) = log (1.0065^(4t))

Step 4:  Apply the power rule of logs and bring down 4t on the right-hand side of the equation:

log (14.0028) = 4t * log (1.0065)

Step 4:  Divide both sides by log 1.0065:

(log (14.0028) = 4t * (1.0065)) / log (1.0065)

log (14.0028) / log (1.0065) = 4t

Step 5; Multiply both sides by 1/4 (same as dividing both sides by 4) to solve for t.  Then round to the nearest hundredth to find the final answer:

1/4 * (log (14.0028) / log (1.0065) = 4t)

101.8394474 = t

101.84 = t

Thus, it will take about 101.84 years for the money in the savings account to reach $35007

There are 32 integers included in both Set A and Set B.

To find the number of integers included in both Set A and Set B, we need to determine the overlapping range of values between the two sets. Set A contains all integers from 50 to 100 (inclusive), while Set B contains all integers from 69 to 138 (exclusive).

To calculate the number of integers included in both sets, we need to identify the common range between the two sets. The common range is the intersection of the ranges represented by Set A and Set B.

The common range can be found by determining the maximum starting point and the minimum ending point between the two sets. In this case, the maximum starting point is 69 (from Set B) and the minimum ending point is 100 (from Set A).

Therefore, the common range of integers included in both Set A and Set B is from 69 to 100 (inclusive). To find the number of integers in this range, we subtract the starting point from the ending point and add 1 (since both endpoints are inclusive).

Number of integers included in both Set A and Set B = (100 - 69) + 1 = 32.

Therefore, there are 32 integers included in both Set A and Set B.

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The effective interest rate is 0.00%.

To find the effective interest rate, we can use the formula for the present value of an annuity:

PV = P × [(1 - (1 + r)^(-n)) / r]

Where:

PV = present value (loan amount) = $40,140

P = periodic payment = $1,540

r = interest rate per period (quarter) that we want to find

n = total number of periods = 9 years * 4 quarters/year = 36 quarters

Let's solve the equation for r:

40,140 = 1,540 × [(1 - (1 + r)^(-36)) / r]

We can simplify the equation and solve for r using numerical methods or financial calculators. However, since you mentioned that the effective interest rate is 0.00%, it suggests that the loan is interest-free or has an interest rate close to zero. In such a case, the periodic payment of $1,540 is sufficient to settle the loan in 9 years without accruing any interest.

Therefore, the effective interest rate is 0.00%.

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Answer:

50 p Is a better deal

Step-by-step explanation:

if wrong let me know

The final result of long division is: 9x - 11 with the remainder -12.

To divide (9x² - 21x - 20) by (x - 1) using long division:

To divide using long division, follow these steps:

Step 1: Write the problem in long division format. Place the dividend, which is 9x² - 21x - 20, inside the long division symbol. Place the divisor, which is x - 1, on the left side.

        _______________________
x - 1  |   9x² - 21x - 20

Step 2: Divide the first term of the dividend (9x²) by the first term of the divisor (x). Write the quotient above the long division symbol.

        _______________________
x - 1  |   9x² - 21x - 20
         9x

Step 3: Multiply the quotient (9x) by the divisor (x - 1) and write the result below the dividend. Subtract this result from the dividend.

        _______________________
x - 1  |   9x² - 21x - 20
         9x² - 9x

                - (9x² - 9x)
        _______________________
x - 1  |   9x² - 21x - 20
         9x² - 9x
        ________________
                    -12x - 20

Step 4: Bring down the next term of the dividend (-20) and continue the process.

        _______________________
x - 1  |   9x² - 21x - 20
         9x² - 9x
        ________________
                    -12x - 20
                    -12x + 12
        ________________
                           -32

Step 5: Divide the new term (-32) by the first term of the divisor (x). Write the new quotient above the long division symbol.

        _______________________
x - 1  |   9x² - 21x - 20
         9x² - 9x
        ________________
                    -12x - 20
                    -12x + 12
        ________________
                           -32
                           -32

Step 6: Multiply the new quotient (-32) by the divisor (x - 1) and write the result below. Subtract this result from the previous result.

        _______________________
x - 1  |   9x² - 21x - 20
         9x² - 9x
        ________________
                    -12x - 20
                    -12x + 12
        ________________
                           -32
                           -32
         _________________
                              0

Step 7: The division is complete when the remainder is zero. The final quotient is 9x - 12.

Therefore, (9x² - 21x - 20) / (x - 1) = 9x - 12.

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The work required to pitch a 6.6 oz softball at 90 ft/sec is approximately 37.125 ft-lb.

To find the work required to pitch a softball, we can use the formula:

Work = Force * Distance

In this case, we need to calculate the force and the distance.

Force:

The force required to pitch the softball can be calculated using Newton's second law, which states that force is equal to mass times acceleration:

Force = Mass * Acceleration

The mass of the softball is given as 6.6 oz. We need to convert it to pounds for consistency. Since 1 pound is equal to 16 ounces, the mass of the softball in pounds is:

6.6 oz * (1 lb / 16 oz) = 0.4125 lb (rounded to four decimal places)

Acceleration:

The acceleration is given as 90 ft/sec.

Distance:

The distance is also given as 90 ft.

Now we can calculate the work:

Work = Force * Distance

= (0.4125 lb) * (90 ft)

= 37.125 lb-ft (rounded to three decimal places)

Therefore, the work required to pitch a 6.6 oz softball at 90 ft/sec is approximately 37.125 ft-lb.

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A: ZABC is a right angle. (Given)

B: DB bisects ZABC. (Given)

C: m/ABD = m/CBD. (Definition of angle bisector)

D: m/ABD + m/CBD = 90°. (Sum of angles in a right triangle)

By substitution property, m/CBD + m/CBD = 90° should be m/ABD + m/CBD = 90°.

A: Given: ZABC is a right angle.

B: Given: DB bisects ZABC.

C: To prove: m/CBD = 45°

D: Proof:

ZABC is a right angle. (Given)

DB bisects ZABC. (Given)

m/ABD = m/CBD. (Definition of angle bisector)

m/ABD + m/CBD = 90°. (Sum of angles in a right triangle)

Substitute m/CBD with m/ABD in equation (4).

m/ABD + m/ABD = 90°.

2 [tex]\times[/tex] m/ABD = 90°. (Simplify equation (5))

Divide both sides of equation (6) by 2.

m/ABD = 45°.

Therefore, m/CBD = 45°. (Substitute m/ABD with 45°)

Thus, we have proved that m/CBD is equal to 45° based on the given statements and the reasoning provided.

Please note that in step 5, the substitution of m/CBD with m/ABD is valid because DB bisects ZABC. By definition, an angle bisector divides an angle into two congruent angles.

Therefore, m/ABD and m/CBD are equal.

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The solution to the equations are

(i) x = 0

(ii) x ≈ 3.032

(i) 12 + 3eˣ + 2 = 15

First, we can simplify the equation by subtracting 14 from both sides:

3eˣ = 3

isolate the exponential term.

eˣ = 1

solve for x by taking natural logarithm of both sides

ln(eˣ) = ln (1)

x = ln (1)

Since ln(1) equals 0, the solution is:

x = 0

(ii) 4ln(2x) = 10

To solve this equation, we'll isolate the natural logarithm term by dividing both sides by 4:

ln(2x) = 10/4

ln(2x) = 2.5

exponentiate both sides using the inverse function of ln,

e^(ln(2x)) = [tex]e^{2.5}[/tex]

2x =  [tex]e^{2.5}[/tex]

Divide both sides by 2:

x = ([tex]e^{2.5}[/tex])/2

Using a calculator, we can evaluate the right side of the equation:

x ≈ 3.032

Therefore, the solution to the equation is:

x ≈ 3.032 (rounded to 3 decimal places)

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