Answer:
Step-by-step explanation:
To find the value of x such that f(x) = g(x), we need to set the two functions equal to each other and solve for x.
First, let's define the variables:
f(x) = 2x² - x - 6 is a quadratic function with x as the variable.
g(x) = x² - 4 is also a quadratic function with x as the variable.
Now, to find the value of x such that f(x) = g(x), we set the two functions equal to each other:
2x² - x - 6 = x² - 4
Next, we simplify this equation by subtracting x² from both sides:
x² + x - 10 = 0
This is a quadratic equation, which we can solve for x using either the quadratic formula or by factoring.
Let's try factoring:
x² + x - 10 = (x + 5)(x - 2) = 0
So either x + 5 = 0 or x - 2 = 0. Solving for x, we find that:
x = -5 or x = 2
These are the two values of x such that f(x) = g(x).
Trevor graphed y = 60 - 5x to represent the number of gallons of water left in
a pool that has been draining for x minutes.
The requried domain for the given relationship is (0, 12) or 0 ≤ x ≤ 12.
What is a domain?The domain is defined as the values of the independent variable for which there is a certain value of the dependent variable exists in the range of the function.
here,
The domain of a function represents the set of all possible input values. In this case, the function y = 60 - 5x represents the number of gallons of water left in the pool after x minutes of draining.
So the maximum value of water in the pool left is 60 gallons, while the water is draining at the rate of 5 gallons per minute After a certain minute the water will left be zero gallons(y = 0).
0 = 60 - 5x
-5x = -60
x = 12 minutes
Thus, the requried domain for the given relationship is (0, 12) or 0 ≤ x ≤ 12.
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Find the lower quartile for the data. {63, 74, 63, 76. 73, 70, 74, 69, 69, 65, 70, 70, 72, 70, 65}
A. 65
B. 68
C. 66
D. 67
Answer:
65
Step-by-step explanation:
The lower quartile for the given data is 65. To calculate this, we first need to sort the data in ascending order: {63, 63, 65, 65, 69, 70, 70, 70, 70, 72, 73, 74, 74, 76}. The lower quartile is then calculated as the median of the lower half of the data, which is 65.
Are the ratios 4:6 and 2:3 equivalent? Yes or No
Answer:
Step-by-step explanation:
Yes, the ratios 4:6 and 2:3 are equivalent.
To see why, we can compare the proportions of the two ratios by dividing each term by the smaller term in each ratio.
In the ratio 4:6, if we divide both terms by 4, we get:
4/4 : 6/4 = 1 : 3/2
In the ratio 2:3, if we divide both terms by 2, we get:
2/2 : 3/2 = 1 : 3/2
Since both ratios reduce to the same proportion of 1 : 3/2, we can conclude that the ratios 4:6 and 2:3 are equivalent.
Ratios are mathematical expressions that compare two or more quantities. When two ratios are equivalent, it means that they represent the same proportion, even if the numbers in the ratios are different.
To compare the ratios 4:6 and 2:3, we divided each term in each ratio by the smallest term. This is because dividing each term by the same number will keep the proportion of the ratio the same.
For example, in the ratio 4:6, dividing both terms by 4 gave us the proportion of 1 : 3/2, which is the same as the proportion of 2:3 when divided by 2. This means that, even though the numbers in the two ratios are different, they represent the same proportion, and therefore the ratios are equivalent.
It's important to note that when comparing ratios, it's best to reduce the ratios to their simplest form so that the proportions are more easily compared.
The home range, in hectares, of a carnivorous mammal weighing w grams can be approximated by H(w)= 0.11w^1.36
Which of the following equations represents a parabola with a vertical axis of symmetry, vertex at (10, –4), and p = –3?
(y + 10)2 = 12(x – 4)
(y – 10)2 = –12(x + 4)
(x + 10)2 = 12(y – 4)
(x – 10)2 = –12(y + 4)
(x - 10)² = -12 (y + 4) represents a parabola with a vertical axis of symmetry, vertex at (10, –4), and p = –3 .
What's a vertical parabola?
A vertical parabola has its axis of symmetry at x = h, and the vertex is (h, v). With this information, you can find the focus and directrix. The focus is the distance from the vertex to the focus is 1/(4a), where a can be found in the equation of the parabola (it is the scalar in front of the parentheses).
we know that
If the axis of symmetry is parallel to the y-axis, then we have a vertical parabola
The equation of a vertical parabola is equal to
4p(y - k) = (x - h)²
where
(h,k) is the vertex
In this problem we have
(h,k) = (10, –4)
p= -3
substitute
4*(-3)(y - (-4)) = (x - 10)²
-12 (y + 4) = (x - 10)²
or
(x - 10)² = -12 (y + 4)
Hence , option D is correct.
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please help me. i don't know how to do this.
- 54 is the value of x in the linear equation .
What in mathematics is a linear equation?
An algebraic equation with simply a constant and a first-order (linear) term, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.
Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.
f(X) = x² + 7x - 4
A) f(-2) + f(4) = - 14 + 40 = 26
B) f(-2) - f(4) = - 14 - 40 = -54
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D. Higher Order Thinking A sequence has both even and odd numbers. It follows a subtraction pattern. Can the pattern be subtract 4? Subtract 5? Explain.
Regarding the pattern, we have that:
The pattern cannot be subtract 4.The pattern can be subtract 5.How to identify the correct pattern?Regarding subtraction by even numbers, we have that:
When an even number subtracts an even number, the result is even.When an even number subtracts an odd number, the result is odd.Hence the pattern cannot be subtract 4, as the sequence would be composed either by all even numbers or all odd numbers.
Regarding subtraction by odd numbers, we have that:
When an odd number subtracts an even number, the result is odd.When an odd number subtracts an odd number, the result is even.We can see that the results alternate, hence the pattern can be subtract 5.
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Refer to the accompanying data set and use the 30 screw lengths to construct a frequency distribution. Begin with a
lower class limit of 0.720 in., and use a class width of 0.010 in. The screws were labeled as having a length of 3/4 in.
Click on icon to view the data
Following is the frequency distribution table:
0.720- 0.730
0.730- 0.740
0.740- 0.750
What is Frequency Table?Any table that shows the frequency of values for one or more variables within a set of data. a table displaying each value of the variable and its accompanying frequency for a whole-number variable in a data set.
Given:
The lower limit is given as 0.720 inches.
and, The upper limit is 0.750 inches.
Also, the width of each class is 0.010 inches.
Thus, the intervals will be:
0.720- 0.730
0.730- 0.740
0.740- 0.750
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Determine whether or not the distribution is a discrete probability distribution and select the reason why or why not. x −4 −3 −2 P(X=x) 0.55 0.39 0.06 Answer Keyboard Shortcuts First, decide whether the distribution is a discrete probability distribution, then select the reason for making this decision. Decide Reason
Answer:
x −4 −3 −2
P(X=x) 0.55 0.39 0.06
Step-by-step explanation:
You can jog around your block twice and the park once in 10 minutes. You can jog around your block twice and the park 3 times in 22 minutes.
The system of linear equations representing the given situation is: 2x + y = 10 and 2x + 3y = 22. Solving this system, we find that it takes 6 minutes to jog around the park.
a. Let's use x to represent the number of minutes it takes to jog around the block and y to represent the number of minutes it takes to jog around the park.
From the problem statement, we know that:
2x + y = 10 (jog around the block twice and the park once in 10 minutes)
2x + 3y = 22 (jog around the block twice and the park three times in 22 minutes)
These are the two linear equations that represent the given situation.
b. We can solve this system of equations to find the value of y, which represents the number of minutes it takes to jog around the park.
We can start by eliminating x from the equations. Subtracting the first equation from the second, we get:
(2x + 3y) - (2x + y) = 22 - 10
2y = 12
y = 6
So, it takes 6 minutes to jog around the park.
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Complete question:
You can jog around your block twice and the park once in 10 minutes. you can jog around your block twice and the park 3 times in 22 minutes.
a. write a system of linear equations that represents this situation. let x represent the number of minutes it takes you to jog around your block and y represent the number of minutes it takes you to jog around the park. system of equations:
b. how long does it take you to jog around the park? it takes you minutes to jog around the park.
The ratio of the length to width of a rectangle is 3 to 2. If the length of the rectangle is 1 3/4 feet, what is the area of the rectangle in square inches?
Answer:
If the ratio of the length to width of the rectangle is 3 to 2, we can write the length and width as:
length = 3x and width = 2x
where x is a common factor that can be determined once we know one of the dimensions.
Since the length of the rectangle is given as 1 3/4 feet, we can set x = 1 3/4:
length = 3x = 3 * 1 3/4 = 5 1/4 feet
width = 2x = 2 * 1 3/4 = 3 1/2 feet
Now that we know the length and width of the rectangle, we can calculate its area in square inches:
area = length * width = 5 1/4 * 3 1/2 = 18 3/8 square feet
To convert from square feet to square inches, we multiply by 12^2 = 144:
area = 18 3/8 * 144 = 2664 square inches
So the area of the rectangle is 2664 square inches.
Solve for x with the given measures
How many cans of a nutritional supplement as a patient in just over seven days if each can contains 12 Ozzie in the mountain just per day is 1080 milliliters is vegan
Answer:
Second Option : 21
Step-by-step explanation:
At 1080 ml per day for 7 days, the patient would have to ingest 1080 x 7 = 7,560 ml
Since the can capacity is given in oz we have to convert both values to the same units
1 ml = 0.033814 fl oz
Therefore 7,560 ml ≡ 7,560 ml x 0.033814 fl oz
= 255.634 oz
Since each can holds 12 oz, the number of cans = 255.634/12
= 21.3
From the answer choices, the closest to this value is Second Option : 21 cans
Hakeem made 5% of his free throws over the season. If he shot 200 free throws, how many did he make?
Hakeem made 10 shots. The solution has been obtained by using proportions.
What is proportion?
Two numbers are compared. It is known as a proportion in mathematics. The law of proportion states that if two sets of given numbers rise or decrease in the same ratio, they are considered to be directly proportionate to one another.
We are given that Hakeem made 5% of his free throws over the season.
He shot 200 free throws and was able to make 5% from them.
So,
Number of throws he made = Number of free throws x Percentage made
Using this, we get
⇒Number of throws he made = 200 x 5%
⇒Number of throws he made = 10
Hence, Hakeem made 10 shots.
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Find the equation of the line L
to get the equation of any straight line, we simply need two points off of it, let's use those two in the picture above
[tex](\stackrel{x_1}{-1}~,~\stackrel{y_1}{-1})\qquad (\stackrel{x_2}{-3}~,~\stackrel{y_2}{1}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{1}-\stackrel{y1}{(-1)}}}{\underset{\textit{\large run}} {\underset{x_2}{-3}-\underset{x_1}{(-1)}}} \implies \cfrac{1 +1}{-3 +1} \implies \cfrac{ 2 }{ -2 } \implies - 1[/tex]
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-1)}=\stackrel{m}{- 1}(x-\stackrel{x_1}{(-1)}) \implies y +1 = - 1 ( x +1) \\\\\\ y+1=-x-1\implies {\Large \begin{array}{llll} y=-x-2 \end{array}}[/tex]
a. A and D
b. B, C, and E
c. A,B,C,D, and E
d. A,D, and E
Answer:
b. B, C, and E
Step-by-step explanation:
The lateral surface area is the sum of the areas of all the faces except for the base.
Margaux pays $19 for postage. What is the mass of her parcel?
To find the mass of her parcel, you must solve the equation for the input when the output is of 19.
How to find the numeric value of a function or of an expression?To find the numeric value of a function or of an expression, we replace each instance of the variable in the function or in the expression by the value at which we want to find the numeric value.
For this problem, we have that the numeric value is of $19, hence the equation must be solved for the input variable to find the mass of the parcel.
Missing Information
The problem is incomplete, hence the general procedure to solve it was presented.
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1 1/2 + 3 2/3 + 2/3 equals what?
Answer: 35/6 or 5 and 5/6
Step-by-step explanation:
Answer:
35/6
Step-by-step explanation:
The period of a function represents _____.
the displacement of x at which the graph begins to repeat
the displacement of y at which the graph begins to repeat
the displacement of y from the central axis of the wave
the displacement of x from the central axis of the wave
T (ABCD) = (A'B'C'D'). If A is (6, −8), A' is (−2, 4), and B is (4, −6), what are the coordinates of B'?
A. (−4, −12)
B. (−8, −4)
C. (−4, 6)
D. (−2, −12)
Option C : (-4, 6) are the coordinates of B'.
What are meant by coordinates?
Coordinates are two integers (Cartesian coordinates) or often a letter and a number that identify a particular place on a grid known as a coordinate plane. A coordinate plane has four quadrants and two axes: the horizontal x-axis and the vertical y-axis (vertical).
Given T(ABCD) = (A'B'C'D') and A = (6, -8) , A' = (-2, 4)
If B = (4, -6) then let B' = (x, y)
now, x - 4 = -2 - 6
x = 4 - 2 - 6 = -4
and y - (-6) = 4 - (-8)
y + 6 = 4 + 8
y = 6
Therefore, B' = (-4, 6)
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When hired at a new job selling jewelry, you are given two pay options:
Option A: Base salary of $17,000 a year, with a commission of 8% of your sales
Option B: Base salary of $24,000 a year, with a commission of 4% of your sales
In order for option A to produce a larger income, you would need sell at least $
of jewelry each year.
Answer:
$175,000
Step-by-step explanation:
We can use a system of inequalities to solve this problem
Let X be the sales of jewelry in $
Option A
Base salary = $17,000
Commission: 8% of sales
Commission at 8% =8% x $X = 8/100 x $X = $0.08X
Total remuneration = 17,000 + 0.08X
Option B
Base salary = $24,000
Sales = X$
Commission = 4% of $X = 4/100 x $X = $0.04X
Total remuneration = 24,000 + 0.04X
For Option A to be a better deal(higher income)
Total remuneration on Option A > Total remuneration on Option B
17,000 + 0.08X ≥ 24,000 + 0.04X
(we are using ≥ symbol though the question does state larger income, later on it states at least how many $ worth of sales)
Subtract 0.04X from both sides:
17,000 + 0.08X - 0.04X >= 24,000 + 0.04X -0.04X
17,000 + 0.04X >= 24,000
Subtract 17,000 both sides:
17,000 - 17,000 + 0.04X ≥ 24,000 - 17,000
0.04X ≥ 7,000
X ≥7000/0.04
X ≥ $175,000
So under Option A, you would need to sell at least $175,000 worth of jewelry to make a larger income.
Actually at $175,000 the income from both options are equal
A collection of nickels, dimes, and quarters consist of
11
coins with a total of
$1.70
. If the number of dimes is equal to the number of nickels, find the number of each type of coins.
The number of each type of coins are 3 nickle, 3 dime and 5 quarters.
What are coins?A usually flat piece of metal issued by governmental authority as money.
Given that, a collection of nickels, dimes, and quarters consist of 11 coins with a total of $1.70
We know that, the values are:
quarters (q) = 25 cent, nickles (n) = 10 cent, dime (d) = 5 cent:
q + n + d = 11 coins…(x)
25q + 10n + 5d = 170 cents
Since, d = n
Therefore,
q + 2n = 11
25q + 15n = 170
q + 2n = 11...(i)
5q + 3n = 34...(ii)
Put q = 11-2n, in eq(ii)
Therefore,
5(11-2n)+3n = 34
55-10n+3n = 34
7n = 21
n = 3
Put n = 3 in eq (i)
q = 11-6
q = 5
Put the values of n and q in eq (x)
3+5+d = 11
d = 3
Hence, the number of each type of coins are 3 nickle, 3 dime and 5 quarters.
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Hana Coffee Company roasts and packs coffee beans. The process begins by placing coffee beans into the Roasting Department. From the Roasting Department, coffee beans are then transferred to the Packing Department. The following is a partial work in process account of the Roasting Department at July 31: ACCOUNT Work in Process—Roasting Department ACCOUNT NO. Date Item Debit Credit Balance Debit Credit July 1 Bal., 6,300 units, 2/5 completed 14,112 31 Direct materials, 283,500 units 595,350 609,462 31 Direct labor 113,500 722,962 31 Factory overhead 28,400 751,362 31 Goods transferred, 284,000 units ? 31 Bal., ? units, 2/5 completed ? Required: Question Content Area 1. Prepare a cost of production report, and identify the missing amounts for Work in Process—Roasting Department. If an amount is zero, enter "0". When computing cost per equivalent units, round to two decimal places.
Based on the information provided, we can prepare a cost of production report for the Roasting Department as follows: (see attached images)
What is a Cost of Production Report?A Cost of Production Report is a document that summarizes the total costs incurred by a company to manufacture a product or provide service during a specific period of time.
The report provides information on the direct materials, direct labor, and factory overhead costs that were involved in producing the item, as well as any other costs associated with the production process.
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Find the Value of X
A. 4
B. 8
C. 22
D. 14
Answer:B
Step-by-step explanation:
5x+15=55
5x=40
x=8
Mary can jog twice as fast as she can walk. She was able to jog the first 13.5 miles to
her grandmother's house, but then she tired and walked the remaining 1.5 miles. If the
total trip took 1.5 hours, then what was her average jogging speed?
Answer: Let's call Mary's walking speed "w". Then, her jogging speed is 2w.
The total distance of the trip was 13.5 + 1.5 = 15 miles.
The total time she spent jogging was 1.5 hours, so the time she spent walking was 1.5 - 1.5 = 0 hours.
Her average speed for the whole trip was 15 miles / 1.5 hours = 10 miles per hour.
So, we can set up the equation:
(13.5 miles / 2w) + (1.5 miles / w) = 1.5 hours
We can substitute 2w for jogging speed and w for walking speed, and simplify:
(13.5 miles / 2w) + (1.5 miles / w) = 1.5 hours
13.5 / 2w + 1.5 / w = 1.5
27 / 2w = 1.5
2w = 27 / 1.5
2w = 18
Finally, we can find Mary's jogging speed by dividing the expression for 2w by 2:
w = 18 / 2
w = 9
So, Mary's jogging speed was 9 miles per hour.
Step-by-step explanation:
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To encourage bulk buying, a company reduces the list price of $4,000 per unit by
three cents times the number of units bought. Write a function statement for the
company's revenue (R) from a particular distributor that buys x units.
R(x) =
The expression (4000 - 0.03x) represents the discounted price per unit when x units are purchased and multiplying by x gives the total revenue from selling x units at that price.
What is revenue?
Revenue can be defined as the total amount of income generated by the sale of goods and services related to the primary operations of the business.
The revenue (R) from a particular distributor that buys x units can be calculated using the following function statement:
R(x) = (4000 - 0.03x) * x
Where
4000 is the original list price per unit 0.03 is the discount per unit per unit purchased x is the number of units purchasedThe expression (4000 - 0.03x) represents the discounted price per unit when x units are purchased, and multiplying by x gives the total revenue from selling x units at that price.
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Factor out the greatest common factor from the expressions below to find an equivalent ex
pression. (Hint First combine the like terms and them find the GCF and factor the expression
4 16p+5+9p+25
The solution is, the Factor out the greatest common factor from the expression is 5(5p+6).
What is GCF?The greatest common factor (GCF) of a set of numbers is the largest factor that all the numbers share. For example, 12, 20, and 24 have two common factors: 2 and 4. The largest is 4, so we say that the GCF of 12, 20, and 24 is 4. GCF is often used to find common denominators.
here, we have,
given expression is,
16p+5+9p+25
=25p+30
=5(5p+6)
Hence, The solution is, the Factor out the greatest common factor from the expression is 5(5p+6).
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This right circular cylinder has a radius of 8 in. And a height of 15 in. What is its volume, v?.
The volume of the cylinder is approximately 9,558.4 cubic inches.
The volume V of a right circular cylinder is given by the formula:
V = πr^2h
where r is the radius of the circular base and h is the height of the cylinder.
In this case, the radius is 8 inches and the height is 15 inches. Substituting these values into the formula, we get:
V = π(8^2)(15)
= π(64)(15)
= 3,040π cubic inches
Therefore, the volume of the cylinder is 3,040π cubic inches. If you want an approximate value, you can use the approximation π ≈ 3.14 and calculate:
V ≈ 3,040(3.14)
≈ 9,558.4 cubic inches
So, the volume of the cylinder is approximately 9,558.4 cubic inches.
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∠X = 89°, ∠Y = 90°, ∠Z = ?
∠X = 89°, ∠Y = 90°, ∠Z = 40° ∠X+∠Z=180---------> ∠X=180-∠Z-----> ∠X=180-40°----> ∠X=140°
→ (2b+6)+(3b-1)=90----> 5b+5=90----> 5b=85----> b=17°
→ ∠Z=2b+6---- 2*17+6-----> ∠Z=40°
→ ∠Y=3b-1---> ∠Y=3*17-1---> ∠Y=50°
angle Y and W are supplementary angles
so
→ ∠Y+∠W=180---------> ∠W=180-∠Y------> ∠W=180-50----> ∠W=130°
angle X and Z are supplementary angles
so
→ ∠X+∠Z=180---------> ∠X=180-∠Z-----> ∠X=180-40°----> ∠X=140°
Therefore, the answer is
∠Z=40°
Need help with this maths vector question
Answer:
Step-by-step explanation:
(a) We can find the position vectors of the points L, M, and N by taking the average of the position vectors of the points they lie between.
The midpoint of AB is given by:
N = (A + B)/2 = (41 + (41 + 21))/2 = (41 + 62)/2 = 51.5i
The midpoint of AD is given by:
L = (A + D)/2 = (41 + 6k)/2 = 23i + 3k
The midpoint of BD is given by:
M = (B + D)/2 = (41 + 21 + 6k)/2 = 31i + 3.5k
Now, we can find the vector MN by subtracting the position vectors of M and N:
MN = M - N = (31i + 3.5k) - (51.5i) = -20.5i + 3.5k
The angle between the directions of MN and OB can be found using the dot product:
cos(θ) = (MN . OB) / (|MN| * |OB|)
where θ is the angle between the two vectors. We can find the dot product and the magnitudes of the vectors as follows:
MN . OB = -20.5i + 3.5k . 41i + 21j = -20.5 * 41 + 3.5 * 21 = -847.5
|MN| = √((-20.5)^2 + (3.5)^2) = 21
|OB| = √(41^2 + 21^2) = √(1764) = 42
Substituting these values into the formula for cos(θ), we get:
cos(θ) = (-847.5) / (21 * 42) = -0.5
The angle θ can be found from the cosine inverse:
θ = cos^-1(-0.5) = 120 degrees
So, the angle between the directions of MN and OB is 120 degrees.
(b) To find the value of p, we can use the intersection of the lines through P and B and the lines through C and L. Let's call the intersection point R.
The line through P and B can be represented as P + t(B - P) = R
where t is a scalar and R is the position vector of the intersection point. Similarly, the line through C and L can be represented as:
C + s(L - C) = R
where s is a scalar. Setting these two expressions equal to each other, we get:
P + t(B - P) = C + s(L - C)
Expanding and simplifying, we get:
P + t(41i + 21j + 6k) = 21i + 6s(23i + 3k)
Comparing the i, j, and k components, we get:
P + 41t = 21 + 6s * 23
t = (21 - P)/41
6s = (P - 21)/23
s = (P - 21)/138
Substituting s back into the equation for C + s(L - C), we get:
C + (P - 21)/138 * (L - C) = R
21i + 6k + (P - 21)/138 * (23i + 3k - 6k) = R
Expanding, we get:
21i + 6k + (23/138) * Pi + (3/138) * k = R
Comparing the i and k components, we get:
21 + (23/138) * P = Ri
6 + (3/138) * P = Rk
Solving for P, we get:
P = 138 * (Ri - 21)/23 = 138 * (Rk - 6)/3
So the value of p for which the line through P and B intersects the line through C and L is given by the above formula.
