The measure of the angle that it is complementary which is represented by 90-x is always true. Option A
What is an acute angle?An acute angle is simply defined as an angle that measures from 90° and 0°. This means that it is smaller than a right angle.
It is formed in the space between two intersecting lines or planes, or from the intersection of two shapes.
What is a complementary angle?A complementary angle can be defined as a pair of angles whose sum is equal or equivalent to 90 degrees.
From the information given, we have that;
x is the acute angle
The complementary angle is 90 - x
We can see that the angle x must be complementary to be subtracted from 90 degrees.
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The complete question:
If the measure of an acute angle is represented by x, then the measure of its complement is represented by 90 – X.
always true
sometimes true
never true
alexis created the two-way frequency table from information she gathered by asking 88 teenagers about their last online shopping experience. own money parents' money total completed purchase 16 34 50 just looked 22 16 38 total 38 50 88 about what percent of the teenagers purchased something with their parents' money?
The percentage of the teenagers who purchased something with their parents' money can be calculated from the two-way frequency table. About 38.64% of the teenagers purchased something with their parents' money.
There were a total of 88 teenagers who were surveyed by Alexis. 38 of them completed the purchase, and out of these 38 teenagers, 34 of them used their parents' money. So, the percentage of teenagers who purchased something with their parents' money can be calculated as follows:
Percent of teenagers who purchased something with their [tex]parents' money = \frac{Frequency of completed purchase}{Total Number of teenagers surveyed} *100[/tex]
Percent of teenagers who purchased something with their parents' money = [tex]\frac{34}{88} * 100%[/tex]%
Therefore percent of teenagers who purchased something with their parents' money = 38.64%
Therefore, about 38.64% of the teenagers purchased something with their parents' money.
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the correlation coefficient may assume any value between : -1, and 1. 0 and 1. 0 and 8. -1, and 0. -infinity and infinity.
The correlation coefficient may assume any value between -1 and 1. Correct answer option A.
This means that the coefficient might be negative, zero, or positive, with -1 being a perfect negative correlation, 0 representing no connection, and 1 representing a perfect positive correlation.
The correlation coefficient is a numerical measure of two variables' linear connection. It is a measure of the strength of the link between two variables. A correlation coefficient of 1 indicates that there is a perfect positive connection, a coefficient of -1 indicates that there is a perfect negative correlation, and a coefficient of 0 shows that there is no correlation between the two variables.
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sequoia can wash six dishes every two minutes. how long will it take her to wash a stack of 60 dishes?
This table shows values that represent an exponential function.
X
0
1
23456
y
1
2
4
8
16
32
64
What is the average rate of change for this function for the interval from x = 3
to x = 5?
The average rate of change for the exponential function over the interval from x = 3 to x = 5 is 12.
Calculating the average rate of changeThe average rate of change for an exponential function can be found by dividing the change in y-values over the change in x-values for the given interval.
For the interval from x = 3 to x = 5, the change in x-values is 5 - 3 = 2.
The corresponding y-values for x = 3 and x = 5 are
y = 8 and y = 32, respectively.
Therefore, the change in y-values over the interval is 32 - 8 = 24.
The average rate of change for the exponential function over the interval from x = 3 to x = 5 is:
Average rate of change = Change in y-values / Change in x-values
Average rate of change = 24 / 2
Average rate of change = 12
Hence, the average rate of change for the exponential function over the interval is 12
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Determine it the two triangles are congruent. If they are. state how vou know. HL, SSS,ASA,AAS
Answer: The two triangles are congruent by axiom AAS as the opposite side of equal angles are also equal.
Q4 NEED HELP PLEASE HELP
Answer:
D. The electrician charges $23 per hour.
Step-by-step explanation:
C(h)= 23h+30 is in the form y=mx +b
$30 is the initial fee (b)
$23 is the amount charged per hour (h)
Use the unique factorization theorem to write the following integers in standard factored form. (a) 756 2^2.3^3.7. (b) 819 3^2.7.11 (c) 9,075 3^2.5^2.7
The factorizations of these integers above represent their factorizations into their respective prime numbers.
(a) 756 = 2^2.3^3.7, (b) 819 = 3^2.7.11, (c) 9,075 = 3^2.5^2.7The unique factorization theorem refers to an essential theorem in standard algebraic theory that characterizes the unique factorization properties of integers. Standard factored form, on the other hand, refers to an expression in which an integer is factored into its standard, irreducible components.In view of this, the three provided integers, 756, 819, and 9,075 can be factored as follows:756 = 2^2.3^3.7 (in standard factored form)819 = 3^2.7.11 (in standard factored form)9,075 = 3^2.5^2.7 (in standard factored form)Note that the factorizations of these integers above represent their factorizations into their respective prime numbers.
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Given: Triangle ABC is similar to triangle DEF, side BC = 19, angle ABC = 48, angle BCA = 73.
If the side DF = 15, then AB - EF = ?
Answer:
We are given two similar triangles, triangle ABC and triangle DEF, and some measurements of triangle ABC. We are also given that DF, one of the sides of triangle DEF, is equal to 15 units. Using this information, we are asked to find the difference between the lengths of sides AB and EF.
To solve the problem, we can first use the angle-angle similarity theorem to determine that the corresponding angles of the two triangles are equal. Therefore, angle DEF is equal to angle BCA, and angle ABE is equal to angle DFE.
Next, we can use the law of sines to find the length of side AB. The law of sines states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is equal for all sides and angles in the triangle. Applying this to triangle ABC, we have:
AB/sin(73) = BC/sin(48)
Substituting the value of BC as 19 units, we can solve for AB to get:
AB = 22.78 units
Similarly, we can use the law of sines to find the length of side EF. Since angle DFE is equal to angle ABE, we can use the same ratio as above to get:
EF/sin(73) = DF/sin(48)
Substituting the value of DF as 15 units, we can solve for EF to get:
EF = 18.20 units
Finally, we can subtract EF from AB to get:
AB - EF = 22.78 - 18.20 = 4.58 units
Therefore, the difference between the lengths of sides AB and EF is 4.58 units.
how to calculate the product of two random variable that follows normal distribution with mean 0 and variance 1
The product of two random variables that follows the normal distribution with mean 0 and variance 1 is expected 0.
To compute the product of two random variables that are normal distributed with a mean of 0 and a variance of 1, the following procedure can be employed:
Since the mean of the normal distribution is 0 and the variance is 1, we can assume that the standard deviation is also 1.Thus, we can write the probability density function of the normal distribution as:
f(x) = (1/√2π) * e^(-x^2/2)
Using the definition of expected value, we can write the expected value of a random variable X as:E[X] = ∫x * f(x) dx, where the integral is taken over the entire range of X.
Similarly, we can write the expected value of a random variable Y as:E[Y] = ∫y * f(y) dy, where the integral is taken over the entire range of Y.
Since the two random variables are independent, the expected value of their product is the product of their expected values. Thus, we can write:E[XY] = E[X] * E[Y]
Substituting the probability density function of the normal distribution into the expected value formula, we can write:E[X] = ∫x * f(x) dx = ∫x * (1/√2π) * e^(-x^2/2) dx = 0
E[Y] = ∫y * f(y) dy = ∫y * (1/√2π) * e^(-y^2/2) dy = 0
Thus, the expected value of the product of two random variables that follow a normal distribution with mean 0 and variance 1 is:E[XY] = E[X] * E[Y]
= 0 * 0 ⇒ 0
Therefore, the product of two random variables that follow a normal distribution with mean 0 and variance 1 has an expected value of 0.
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In ABC, D is a point on AB and E is a point
on AC such that DE is parallel to BC. If AE = 3,
EC = x, ED = x + 1, and CB = x + 5, find the
length of EC. [Only an algebraic solution will be
accepted.]
The required value of EC is 5 units.
How to find the value of EC?Since DE is parallel to BC, we can use the property of similar triangles to set up a proportion:
AD/DB = AE/EC
We know that AD + DB = AB = x + 5. Since D is a point on AB, we can express AD and DB in terms of x:
AD = x, DB = x + 5 - x = 5
We also know that AE = 3 and ED = x + 1. Using these values, we can express AD in terms of ED:
AD = ED - AE = (x + 1) - 3 = x - 2
Substituting these values into the proportion, we get:
(x - 2)/5 = 3/EC
Multiplying both sides by 5EC, we get:
x - 2 = 15/EC
Multiplying both sides by EC, we get:
EC(x - 2) = 15
Expanding the left side, we get:
ECx - 2EC = 15
Solving for EC, we get:
EC = 15/(x - 2)
We are given that EC = x, so we can set these expressions equal to each other:
x = 15/(x - 2)
Multiplying both sides by (x - 2), we get:
x(x - 2) = 15
Expanding the left side, we get:
x² - 2x = 15
Bringing all terms to one side, we get:
x² - 2x - 15 = 0
We can factor this quadratic equation:
(x - 5)(x + 3) = 0
Therefore, x = 5 or x = -3. We reject x = -3 since we are given that EC > 0. Thus, the length of EC is: EC = x = 5.
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All the students in the sixth grade either purchased their lunch or brought their lunch from home on Monday.
* 24% of the students purchased their lunch
* 190 students brought their lunch from home.
How many students are in the sixth grade?
24% of the students bought their lunch on Monday. Therefore, the number of students in the 6th grade is 190
Step-by-step explanation:
Student A can solve 75% of problems, student B can solve 70%. What is the probability that A or B can solve a problem chosen at random?
The probability that student A or B can solve a problem chosen at random is 0.95.
Probability is calculated by dividing the number of favourable outcomes by the number of possible outcomes.
Random: An event is referred to as random when it is not possible to predict it with certainty. The probability that either student A or B will be able to solve a problem chosen at random can be calculated as follows:
P(A or B) = P(A) + P(B) - P(A and B) where: P(A) = probability of A solving a problem = 0.75, P(B) = probability of B solving a problem = 0.7, P(A and B) = probability of both A and B solving a problem. Since A and B are independent, the probability of both solving the problem is:
P(A and B) = P(A) x P(B) = 0.75 x 0.7 = 0.525
Now, using the above formula: P(A or B) = P(A) + P(B) - P(A and B) = 0.75 + 0.7 - 0.525 = 0.925
Therefore, the probability that student A or B can solve a problem chosen at random is 0.95 (or 95%).
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For what value of x, the fraction become undefined 6/x-3
Answer:
the value of x is 3
Step-by-step explanation:
6/3-3=6/0
which is undefinied
Answer:
3
Step-by-step explanation:
The zero product property, says that if a product of two real numbers is 0, then one of the numbers must be 0.
a. Write this property formally using quantifiers and variables.
b. Write the contrapositive of your answer to part (a).
c. Write an informal version (without quantifier symbols or variables) for your answer to part (b).
The contrapositive of the zero product property is that if neither of the two real numbers is 0, then the product of the two numbers will not be 0. In plain language, this means that if neither of the two numbers are 0, then the product of the two numbers cannot be 0.
In an informal version, this can be stated as "if neither number is 0, then their product cannot be 0". This can be understood as "if neither number is 0, the result of multiplying them together cannot be 0". In other words, the product of two real numbers will not be 0 if neither of them is 0.
I like asking random questions so
what is e=mc2
jk jk jk
whats 6+2
I WILL AWARD
Answer: 8
Step-by-step explanation:
6 + 2 is a simple arithmetic operation, which results in 8. When adding 6 and 2, you are combining two numbers to find their total. In other words, you are asking "if I have 6 items and someone gives me 2 more, how many items do I have in total?" The answer is 8, because you would have a total of 8 items.
Answer:
8
Step-by-step explanation:
[tex]6+2[/tex]
We can find the value of this by counting up 2 from 6.
7, 8
So the answer is 8
I NEED HELPP PLEASEEEEEEEE
The slope between the points (-3, 0) and (0, -1) is -1/3.
What is slope?The slope of a line serves as a gauge for its steepness. It may be calculated by dividing the difference in y-coordinate by the difference in x-coordinate between any two points on a line. A line's slope might be zero, positive, negative, or undefinable. A line with a positive slope is moving upward from left to right, a negative slope is moving downward from left to right, and a line with a zero slope is level. The line is vertical if the slope is undefinable.
Let us consider the first two points (-3, 0) and (0, -1).
The slope of the line is given as:
m = (y2 - y1) / (x2 - x1)
Substituting the values we have:
m = (-1 - 0) / (0 - (-3)) = -1/3
Hence, the slope between the points (-3, 0) and (0, -1) is -1/3.
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A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is spun several times, and the results are recorded below:
Spinner Results
Color Frequency
Red 20
Blue 9
Green 11
Yellow 7
Purple 16
Based on these results, express the probability that the next spin will land on red or green or purple as a decimal to the nearest hundredth.
Answer: 0.75
Step-by-step explanation:
The total frequency of all the colors is 20+9+11+7+16=63.
The probability of landing on red or green or purple is the sum of the frequencies of these three colors divided by the total frequency:
P(red or green or purple) = (20+11+16)/63
P(red or green or purple) ≈ 0.75(rounded to the nearest hundredth)
Therefore, the probability of the next spin landing on red or green or purple is approximately 0.75.
Answer:
0.75
Step-by-step explanation:
The total spins was 63. The total amount of spins for red, green or purple is 47.
Dividing, we get 47/63 ≈ 0.75.
Hope this helps!
-2y=6. 6x+9y=9 in substitution form
Answer:
[tex]y=-3,\:x=6[/tex]
Step-by-step explanation:
hope this helped :P
suppose the mean income of firms in the industry for a year is 80 million dollars with a standard deviation of 13 million dollars. if incomes for the industry are distributed normally, what is the probability that a randomly selected firm will earn less than 96 million dollars? round your answer to four decimal places.
The probability that a randomly selected firm will earn less than 96 million dollars is 0.8907
The given data is that the mean income of firms in the industry for a year is 80 million dollars with a standard deviation of 13 million dollars. Now, it is required to find the probability that a randomly selected firm will earn less than 96 million dollars if incomes for the industry are distributed normally.
The probability is calculated by the Z-score formula which is given as below:
z = (x - μ) / σ
Where,μ = 80 (Mean), x = 96 (Randomly selected firm income), σ = 13 (Standard deviation)
Putting the values in the formula we have,
z = (96 - 80) / 13z = 1.23
Now we will use the Z-table to find the probability value. From the Z-table, we can say that the probability of Z-score = 1.23 is 0.8907.
Therefore, the probability that a randomly selected firm will earn less than 96 million dollars is 0.8907 (approx) when rounded off to four decimal places.
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Find the perimeter of the given figure. tb +b) 4cm 5cm 8cm 3cm. 1èm
The perimeter of the figure with dimensions (4cm, 5cm, 8cm, and 3cm) is 20 cm
What is the perimeter?
The entire length of a shape's boundary is referred to as the perimeter in geometry. A shape's perimeter is calculated by combining the lengths of all of its sides and edges. Its dimensions are expressed in linear measures like centimeters, meters, inches, and feet.
Why is a perimeter important?
They help you to quantify physical space and also provide a foundation for more advanced mathematics found in algebra, trigonometry, and calculus. Perimeter is a measurement of the distance around a shape and area gives us an idea of how much surface the shape covers.
What is the formula for the perimeter of a rectangle?
The formula for the perimeter of a rectangle is,
P = length + breadth + length + breadth.
Perimeter of given figure(4cm, 5cm, 8cm, and 3cm) = 4 + 5 + 8 + 3
= 20
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Describe the translation of figure SPOT. Complete the sentence to explain your answer. Two squares plotted on the same coordinate plane. Square S P O T has vertices at (2, 3), (3, 2), (2, 1), and (1, 2). The corresponding vertices of square S prime P prime O prime T prime are at (5, 4), (6, 3), (5, 2), and (4, 3). Figure SPOT is translated unit(s) right and unit(s) up
Figure SPOT is translated unit(s) right and unit(s) up to the right move 8 and to the up move 9.
An effective method for beginning to make this idea clear for translating squares is to give them a slice-out shape to get across the page truly.
Afterward, kids need to figure out how to have the option to interpret a shape without this support.
while doing the above task, ideally, let's begin by putting the effective method for beginning making this idea clear for translating square is to give them a slice out shape to get across the page truly.
Afterward, kids need to figure out how to have the option to interpret a shape without this support.
while doing the above task, ideally, let's begin by putting the mark of your pencil on the upper left-hand corner of the shape and afterward dropping your pencil down 1 and right 2, then, at that point, plotting the primary place of your new shape with a dab.
You would then have to do likewise with the upper right-hand corner of the shape, the bottom left, and afterward the bottom right.
To respond to this, they would have to interpret the square and afterward give the directions of point An on the new shape, which would be (8, 9). mark your pencil on the upper left-hand corner of the shape and afterward drop your pencil down 5 and right 6, then, at that point, plot the primary place of your new shape with a dab.
You would then have to do likewise with the upper right-hand corner of the shape, the bottom left, and afterward the bottom right.
To respond to this, they would have to interpret the square and afterward give the directions of point An on the new shape, which would be (5, 4), (6, 3), (5, 2), and (4, 3).
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1. A 180-day simple interest loan in the amount of $16, 400 will be paid in full in the amount of $16, 851. Find the interest rate of
the loan. Use the banker's method, which uses 360 days in a year.
OR=5.5%
OR=5.0%
OR=4.5%
R= 6.0%
Answer:
Using the banker's method, we can use the following formula to find the interest:
Interest = (Principal x Rate x Days) / 360
Where,
Principal = $16,400
Amount = $16,851
Days = 180
We know that the interest plus the principal equals the amount, so we can set up the following equation:
Interest + Principal = Amount
Substituting the values:
(16,400 x Rate x 180) / 360 + 16,400 = 16,851
Multiplying both sides by 360:
16,400 x Rate x 180 + 5,904,000 = 6,066,360
16,400 x Rate x 180 = 162,360
Rate = 162,360 / (16,400 x 180)
Rate = 0.055 or 5.5%
Therefore, the interest rate of the loan is 5.5%.
Y = -5 (x + 2)^2
Convert the equation from vertex form to standard form.
-5x^2 - 20x- 30, the equation from vertex form to standard form.
What is an equation?An equation is a mathematical statement containing two algebraic expressions flanked by equal signs (=) on either side.
It shows that the relationship between the left and right printed expressions is equal.
All formulas hav LHS = RHS (left side = right side).
You can solve equations to determine the values of unknown variables that represent unknown quantities.
If a statement does not have an equals sign, it is not an equation. A mathematical statement called an equation contains the symbol "equal to" between two expressions of equal value.
Hence, -5x^2 - 20x- 30, the equation from vertex form to standard form.
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a normal distribution is observed from the times to complete an obstacle course. the mean is 69 seconds and the standard deviation is 6 seconds. using the empirical rule, what is the probability that a randomly selected finishing time is greater than 87 seconds? provide the final answer as a percent rounded to two decimal places. provide your answer below: $$ %
The probability that a randomly selected finishing time is greater than 87 seconds is 14.08%. This can be calculated using the empirical rule.
The empirical rule states that for any data that is normally distributed, about 68% of the data will fall within one standard deviation of the mean (in this case, within 69 ± 6 seconds). Approximately 95% of the data will fall within two standard deviations (in this case, within 69 ± 12 seconds), and about 99.7% of the data will fall within three standard deviations (in this case, within 69 ± 18 seconds).Given the mean and standard deviation given, we can calculate the probability that a randomly selected finishing time is greater than 87 seconds.
We can do this by subtracting the area under the curve from the mean to the value we are interested in (in this case, 87 seconds). Since the total area under the curve is 1, subtracting the area from the mean to 87 seconds will give us the desired probability.To calculate the area under the curve, we need to calculate the Z-score, which is the number of standard deviations away from the mean a particular value is. In this case, the Z-score is (87 - 69) / 6, which is 2.16. Using a Z-table, the probability of a Z-score of 2.16 or higher is 0.8592. Therefore, the probability that a randomly selected finishing time is greater than 87 seconds is 1 - 0.8592, which is 0.1408. Rounding to two decimal places, this is 14.08%.
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In ΔJKL, the measure of ∠L=90°, JK = 7. 3 feet, and KL = 4. 7 feet. Find the measure of ∠J to the nearest tenth of a degree
The measure of ∠J in ΔJKL is approximately 57.5 degrees.
The measure of ∠J in ΔJKL can be found using the trigonometric function tangent, which is defined as the ratio of the opposite side to the adjacent side.
The straight line that "just touches" the plane curve at a given point is called the tangent line in geometry. It was defined by Leibniz as the line that passes through two infinitely close points on the curve.
tan(∠J) = JK/KL
tan(∠J) = 7.3/4.7
∠J = arctan(7.3/4.7)
∠J = 57.5 degrees (rounded to the nearest tenth of a degree)
Therefore, the measure of ∠J in ΔJKL is approximately 57.5 degrees.
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The midpoint of AB is =M−−6, 2. One endpoint is =A−−8, 7. Find the coordinates of the other endpoint, B
If the midpoint of AB is =M(−6, 2) and one endpoint is =A(−8, 7), then the coordinates of the other endpoint B is (-4, -5)
To find the coordinates of endpoint B, we can use the midpoint formula, which states that the midpoint of a line segment is the average of the coordinates of its endpoints.
The midpoint formula is
Midpoint = ((x1 + x2)/2, (y1 + y2)/2)
where (x1, y1) and (x2, y2) are the coordinates of the endpoints.
We know the coordinates of point M, which is the midpoint of the line segment AB:
M = (-6, 2)
We also know the coordinates of one endpoint of the line segment, A:
A = (-8, 7)
Let's use the midpoint formula to find the coordinates of endpoint B:
Midpoint = ((x1 + x2)/2, (y1 + y2)/2)
Substituting the values we know:
(-6, 2) = ((-8 + x2)/2, (7 + y2)/2)
Simplifying
-6 = (-8 + x2)/2 and 2 = (7 + y2)/2
Multiplying both sides of each equation by 2:
-12 = -8 + x2 and 4 = 7 + y2
Adding 8 to both sides of the first equation:
-4 = x2
Subtracting 7 from both sides of the second equation:
-5 = y2
Therefore, the coordinates of endpoint B are B = (-4, -5)
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Select the correct answer.Adam constructed quadrilateral PQRS inscribed in circle O. How can he prove PQRS is a square?A.He needs to show only that the diagonals are perpendicular.B.He needs to show only that the diagonals are perpendicular and congruent.C.He needs to show only that the diagonals are perpendicular and bisect each other.D.He needs to show that the diagonals are perpendicular, congruent, and bisect each other.
Adam needs to show that the diagonals are perpendicular, congruent, and bisect each other.Therefore Option D is correct.
To prove that PQRS is a square, Adam needs to show that all four sides are congruent and that all four angles are right angles.
One way to do this is by showing that the diagonals of PQRS are perpendicular, congruent, and bisect each other.
If the diagonals are perpendicular, then opposite angles are congruent and the quadrilateral is a kite.
If the diagonals bisect each other, then opposite sides are congruent and the kite is a rhombus.
If the diagonals are also congruent, then all sides are congruent and the rhombus is a square.
Therefore, He needs to show that the diagonals of PQRS are perpendicular, congruent, and bisect each other to prove that PQRS is a square.
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For AAS Triangle Congruence Theorem, where does the side need to be at?
The two triangles have to have two equal angles that's congruent and one set of corresponding sides who are congruent or adjacent to the angles in order to satisfy the AAS (Angle-Angle-Side) a triangle congruence theory.
What are a triangle's three sides?A right triangle's hypotenuse is its longest side, its "opposite" side was the one that faces a specific angle, and its "adjacent" side is the one that faces the angle in question. To define the edges of right triangles, we use specific terminology.
What are the kinds of triangles?A triangle represents a closed, three-sided object in two dimensions. The various kinds of circles go by various titles. Three different kinds of triangles—scalene, isosceles, and equilateral—are distinguished by the lengths of their sides.
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What is 900x 5 to the 5 power
Answer:
[tex] 900^5x^{25} [/tex]
Step-by-step explanation:
[tex] (900x^5)^5 = [/tex]
[tex] = 900^5(x^5)^5 [/tex]
[tex] = 900^5x^{25} [/tex]
what is the product of any two invertible matrices is invertible.
The product of any two invertible matrices is invertible that is (BC) = A⁻¹
Now, let's consider the product of two invertible matrices, say A and B. Since A and B are invertible, they both have an inverse, denoted by A⁻¹ and B⁻¹, respectively.
To show that the product AB is also invertible, we need to find a matrix that satisfies the definition of an inverse. Let's call this matrix C.
If C is the inverse of AB, then we should have:
(AB)C = C(AB) = I
where I is the identity matrix.
Now, we can use the associativity of matrix multiplication to expand the left-hand side of the equation:
(AB)C = A(BC)
Notice that B and C are both matrices, so their product BC is also a matrix. Thus, we can write:
A(BC) = I
Since A is invertible, we can multiply both sides by A⁻¹ to get:
A⁻¹A(BC) = A⁻¹I
The left-hand side simplifies to:
(BC) = A⁻¹
Now, we have found a matrix C that satisfies the definition of an inverse for AB, which means that AB is invertible.
To summarize, the product of two invertible matrices is invertible, and the proof relies on the fact that the inverse of a matrix is unique and the associativity of matrix multiplication.
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