There were 5 choirs at the choir concert on Friday night. Each choir sang 5 songs.

Which shows how many songs the choirs sang in all?
A.
5 - 5
B.
5 × 5
C.
5 + 5
D.
5 × 6

The missing values are given as shown in the table

A cylinder is a three-dimensional solid figure which has two identical circular bases joined by a curvilinear surface at a particular distance from the center which is the height of the cylinder.

We should understand that the area of a cylinder is given by

Area = 2λr(r+h)

and the volume of the cylinder to be;

volume - λr²h

by substitution we get the values as

diameter        radius         base area     height     `cylinder volume

units                units             square         units          cubic units

                                                units

4                         2                 150.9            10                   62.9

6                         3                151.0               7                    63π

8                          4               25π                  0.875           80π

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The sequences can converge to 0 and also diverge towards infinity.

The two sequences are not mentioned in the question. Please provide the two sequences so that I can give you the first 5 terms of each sequence and determine if each sequence converges or diverges.

To find the first 5 terms of a sequence, you need to use the formula given for the sequence and plug in the values for the first 5 terms. For example, if the sequence is given by a_n = 2n + 1, the first 5 terms would be a_1 = 2(1) + 1 = 3, a_2 = 2(2) + 1 = 5, a_3 = 2(3) + 1 = 7, a_4 = 2(4) + 1 = 9, and a_5 = 2(5) + 1 = 11.

To determine if a sequence converges or diverges, you need to find the limit of the sequence as n approaches infinity. If the limit exists, then the sequence converges to that limit. If the limit does not exist, then the sequence diverges.

For example, the sequence a_n = 1/n converges to 0 as n approaches infinity, while the sequence a_n = n^2 diverges as n approaches infinity.

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a. The area of the family room is 162 ft².

b. 24 tiles will be needed to cover the floor.

c. Mr. Dieter will have to buy 2 boxes to tile the family room.

The solution has been obtained by using the arithmetic operations.

What are arithmetic operations?

All real numbers are thought to be sufficiently described by the four basic operations, also referred to as "arithmetic operations." The mathematical operations quotient, product, sum, and difference come after division, multiplication, addition, and subtraction.

a. There are two different shapes of which one is rectangle and other is triangle.

So,

⇒ Area of rectangle = length x width

⇒ Area of rectangle = 16 x 8

⇒ Area of rectangle = 128 ft²

Also,

⇒ Area of first triangle = [tex]\frac{1}{2}[/tex] x base x height

⇒ Area of first triangle = [tex]\frac{1}{2}[/tex] x 4 x 3

⇒ Area of first triangle = 6 ft²

Similarly,

⇒ Area of first triangle = [tex]\frac{1}{2}[/tex] x base x height

⇒ Area of first triangle = [tex]\frac{1}{2}[/tex] x 8 x 7

⇒ Area of first triangle = 28 ft²

On adding the three areas, we get

⇒ Area of family room = 128 + 6 + 28

⇒ Area of family room = 162 ft²

b. We will convert the area into inches.

We know that 1 feet = 12 inches.

So, using the multiplication, we get

162 feet = 162 * 12 in²

162 feet = 1944 in²

Now,

⇒ Area of tile = 9 * 9

⇒ Area of tile = 81 in²

So,

⇒ Number of tiles = [tex]\frac{1944}{81}[/tex]

⇒ Number of tiles = 24

c. Since, tiles are sold in boxes of 12 so, using the division operation, we get

⇒ Number of boxes needed = [tex]\frac{24}{12}[/tex]

⇒ Number of boxes needed = 2

Hence, the required solution has been obtained.

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Answer: 5.9%

Hope this helps!

The population of a city with 400,000 population growing at a rate of 4% per year can be calculated using the following formula:
P​(t) = P​0 ​ (1 + r)​t
Where P​0 is the initial population, r is the growth rate, and t is the number of years the growth is applied.
In this example, the initial population is 400,000, the growth rate is 0.04, and t is 17 years. Applying this formula, we get:
P(17) = 400,000 (1 + 0.04)17
P(17) = 615,288
Therefore, the population of this city in 17 years will be 615,288 if the growth rate of 4% per year continues.

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The headline should be informative and accurately reflect the data presented in the chart.

A chart is a visual representation of data or information that can be used to help people understand complex information quickly and easily. Charts can take many different forms, such as bar charts, line charts, scatter plots, pie charts, and more. They are often used in business, science, and journalism to present data in a way that is clear and easy to interpret. By using charts, people can quickly see patterns and trends in data that might be difficult to discern from a simple list of numbers or words.

Here,

However, a good headline for a chart should accurately and concisely summarize the main findings or trends depicted in the chart. It should also capture the reader's attention and make them want to read more. Depending on the chart, some possible headlines could be:

"New study finds rising trend in global temperatures over past decade"

"Stock market reaches all-time high, driven by tech sector growth"

"Poll shows majority of Americans support stricter gun control laws"

"Obesity rates continue to climb in US, particularly in southern states"

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"The multiplier for decay is given by the formula:

multiplier = (1 - (decay rate/100))^n

where "decay rate" is the percentage rate of decay per time period (usually per year), and "n" is the number of time periods.

For a decay rate of 1%, the multiplier would be:

multiplier = (1 - (1/100))^n = 0.99^n

For a decay rate of 2%, the multiplier would be:

multiplier = (1 - (2/100))^n = 0.98^n

The value of the multiplier depends on the number of time periods "n". For example, if we want to find the value of an initial quantity after 3 years of 1% decay, we would use the multiplier of 0.99 raised to the power of 3:

multiplier = 0.99^3 = 0.9703

This means that the final quantity would be 97.03% of the initial quantity.

Similarly, if we want to find the value of an initial quantity after 5 years of 2% decay, we would use the multiplier of 0.98 raised to the power of 5:

multiplier = 0.98^5 = 0.9039

This means that the final quantity would be 90.39% of the initial quantity." (ChatGPT, 2023)

The functions are evaluated to give;

a. f(5) = 149/25

b. f(-5) = 149/25

c. f(-x) = 6x² - 1/x²

Functions are defined as equation , laws or expressions showing the relationship between variables.

These variables are known as;

From the information given, we have that;

f(x)=6x^2-1/x^2

Now, to determine the functions, f(5), f(-5) and f(-x), we need to substitute the value inside the bracket as the value of x in each of the functions,

We have;

f(5) = 6(5)²- 1/(5)²

expand the bracket and subtract

f(5) = 149/25

For f(-5) = 6(-5)² - 1/(-5)²

f(-5) = 149/25

For f(-x) = 6(-x)² - 1/(-x)²

f(-x) = 6x² - 1/x²

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The correct answer is experimental 22.5% theoretical 18.2%.

The theoretical probability is the likelihood of the event to happen without conducting an experiment,

The experimental probability is the result of the actual experiment, which in this case is the frequency of the letter M when chosen from the bag.  Theoretical probability in this case is the number of M's in the bag divided by the total number of letters in the bag.

In this case, there are nine M's out of a total of 39 letters, giving a theoretical probability of 18.2%. Since the number of M's chosen in the experiment was nine, out of a total of 39 chosen, the experimental probability is 22.5%.

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The correct answer is experimental 22.5% theoretical 18.2%. To calculate the experimental probability of drawing the letter M, we must first identify the total number of items in the bag.

The theoretical probability is the likelihood of the event to happen without conducting an experiment,

The total number of items in the bag is 9 + 12 + 7 + 2 + 4 + 1 + 3 + 2 = 40. Next, we divide the number of items with the letter M (9) by the total number of items to get the experimental probability of drawing the letter M.

Therefore, 9/40 = 0.225

= 22.5%.  

To calculate the theoretical probability of drawing the letter M, we must first identify the total number of letters in the bag.

There are 8 letters in the bag (M, A, T, H, E, I, C, S).

Therefore, the theoretical probability of drawing the letter M is

8/40 = 0.2

≈18.2%

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In the following question, if Chin paid $16. 24 for 7 bags of flour that were on sale for 10% off. Each bag contained 2 pounds of flour. The regular price for 1 pound of flour is $1.29.

Chin paid $16.24 for 7 bags of flour that were on sale for 10% off.

Let's first find the total cost of the 7 bags of flour before the discount:

Total cost before discount = $16.24 ÷ 0.9 = $18.04

We know that each bag contained 2 pounds of flour, so the total amount of flour Chin bought was:

7 bags x 2 pounds/bag = 14 pounds

So the cost of 1 pound of flour is:

$18.04 ÷ 14 pounds = $1.29 per pound

Therefore, the regular price for 1 pound of flour would be $1.29.

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The standard matrix is:

| 0      -1 |
| -1      0 |

The standard matrix of the linear transformation T: R2 to R2 that reflects each vector through the line x1=-x2 can be found by following these steps:

1. Start with the standard basis vectors for R2, which are (1,0) and (0,1).

2. Apply the transformation T to each of these vectors to find the new vectors. For the first vector, (1,0), we have x1=1 and x2=0. The reflection through the line x1=-x2 gives us a new vector with x1=-x2=-0=0 and x2=-x1=-1. So the new vector is (0,-1).

3. For the second vector, (0,1), we have x1=0 and x2=1. The reflection through the line x1=-x2 gives us a new vector with x1=-x2=-1 and x2=-x1=-0=0. So the new vector is (-1,0).

4. The standard matrix of the transformation T is the matrix whose columns are the new vectors we found. So the standard matrix is:
```
| 0 -1 |
| -1  0 |
```
This is the standard matrix of the linear transformation T: R2 to R2 that reflects each vector through the line x1=-x2.

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The correct option is the relation is not a function.

A function is defined as a relation in which each input has exactly one output. A relation is any set of ordered pairs. According to the given chart:|Year|Sacramento River|Feather River| 2008|271,999|0| 2009|123,739|0| 2010|174,948|16,857| 2011|158,956|22,129| 2012|163,603|19,799| As we can see in the table, the Sacramento river has different number of salmon at a given year.

For example, in the year 2008, there are 271,999 salmon in the Sacramento river, in the year 2009, there are 123,739 salmon in the Sacramento river. The same with the Feather river. There is a year when there are zero salmon and there are years with different number of salmon.

Therefore, this relation is not a function. Hence, the correct option is the relation is not a function.

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Answer: To calculate the sales growth, we need to find the difference between the current year's revenue and the last year's revenue, divide it by the last year's revenue, and then multiply by 100 to convert it to a percentage.

Sales Growth = ((Sales Revenue Current Year - Sales Revenue Last Year) / Sales Revenue Last Year) x 100%

Sales Growth = (($150,000 - $125,000) / $125,000) x 100%

Sales Growth = ($25,000 / $125,000) x 100%

Sales Growth = 0.20 x 100%

Sales Growth = 20%

Therefore, the sales growth is 20%.

Brainliest  is appreciated. (:

Step-by-step explanation:

In the triangle, the values are p=10.3, [tex]\angle Q=19.5\textdegree[/tex] and [tex]\angle R = 112.5\textdegree[/tex].

The functiοns οf an angle in a triangle are knοwn as trigοnοmetric functiοns, cοmmοnly referred tο as circular functiοns. In οther wοrds, these trig functiοns prοvide the relatiοnship between a triangle's angles and sides. There are five fundamental trigοnοmetric functiοns: sine, cοsine, tangent, cοtangent, secant, and cοsecant.

Here in the given triangle PQR, [tex]\angle P = 48\textdegree[/tex] , q=5 and r=13.

Now using law of cosine fοrmula,

=> [tex]p^2=q^2+r^2-2qr.cos\angle P[/tex]

=> [tex]p^2=5^2+13^2-2.5.13.cos 48\textdegree[/tex]

=> [tex]p^2=25+169-130cos48\textdegree[/tex]

=> [tex]p^2=107[/tex]

=> p = 10.3

Now using law of sine then,

=> [tex]\frac{p}{sinP}=\frac{q}{sinQ}[/tex]

=> [tex]sinQ=\frac{q sinP}{p}[/tex]

=> [tex]sin Q= \frac{5sin 48\textdegree}{10.3}[/tex]

=> sin Q = 0.344

=>[tex]\angle Q = 19.5\textdegree[/tex]

Now sum οf all angles in triangle is 180°. Then,

=>[tex]\angle P+\angle Q+\angle R = 180\textdegree[/tex]

=> [tex]\angle R = 180-48-19.5=112.5\textdegree[/tex]

Hence the answers are p=10.3, [tex]\angle Q=19.5\textdegree[/tex] and [tex]\angle R = 112.5\textdegree[/tex].

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Answer:

huh? where is the pic of graph

Step-by-step explanation:

no pic was shown

P(x) is a continuous function on [0, 2]. We can conclude that the given function has a root on [0, 2].

The Intermediate Value Theorem is a mathematical theorem that states that a continuous function between two points takes on every value between the two points. The proof of this theorem is easy to understand and uses the definition of a continuous function. The theorem is used to establish the existence of roots or zeroes of functions.The statement is given by the Intermediate Value Theorem that “if f(x) is a continuous function on the interval [a,b], then for any value k that lies between f(a) and f(b) inclusive, there must be at least one value c on the interval [a,b] such that f(c)=k”.Use the Intermediate Value Theorem to show that P(x) = x5 + 4x3 − 10x − 6 has a root on [0, 2]Given, the function P(x) = x5 + 4x3 − 10x − 6Step 1: Verify if the function is continuous on [0, 2].The function P(x) is a polynomial function, and all the polynomial functions are continuous functions.

Therefore, P(x) is a continuous function on [0, 2].Step 2: Check the signs of the function at the endpoints f(0) and f(2).Let’s check f(0) and f(2)f(0) = P(0) = 0^5 + 4(0)^3 – 10(0) – 6= -6f(2) = P(2) = 2^5 + 4(2)^3 – 10(2) – 6= 50Step 3: Check if the value 0 lies between f(0) and f(2) inclusive.f(0) < 0 < f(2)Since 0 lies between f(0) and f(2), according to the Intermediate Value Theorem, there must be at least one value c on the interval [0,2] such that f(c)=0Hence, we can conclude that the given function has a root on [0, 2] Therefore, we can conclude that the given function has a root on [0, 2].

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Answer:

i think 150 is the answer

Step-by-step explanation:

150 is a 3 digit numbers (as written in question (a)) and is a multiple of 5 and 3

150/5 = 30

150/3 = 50

The sides of the triangle to the nearest hundredth are: a ≈ 8.99, b ≈ 7.96

and c ≈ 9.44.

To solve the triangle, we can use the Law of Sines, which states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is the same for all three sides.

Using this law, we can find the length of side a as follows:

sin A / a = sin B / b

sin 56° / a = sin 57° / 9

a = 9 * sin 56° / sin 57°

a ≈ 8.99

Similarly, we can find the length of side c as follows:

sin C / c = sin B / b sin (180° - A - B) / c = sin 57° / 9

sin 67° / c = sin 57° / 9

c = 9 * sin 67° / sin 57°

c ≈ 9.44

Now, we can use the Law of Cosines to find the length of the remaining side, side b:

b 2 = a 2 + c 2 - 2ac cos B

b 2 = (8.99) 2 + (9.44) 2 - 2(8.99)(9.44) cos 57°

b ≈ 7.96

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(a) A sound with an intensity of 1 watt per square meter has a decibel level of -120.

(b) A sound with an intensity of 10⁻² watt per square meter has a decibel level of -140.

(c) The number of decibels is not 100 times as great as the intensity, even though the intensity in part (a) is 100 times greater than the intensity in part (b).

Using the relationship of intensity of sound and number of decibels, we can calculated the required number of decibels as follows;

β =10 log(I x 10⁻¹²)

(a) Decibel level: plugging in I = 1 watt per square meter into the equation, we get:

β = 10 log(1 x 10⁻¹²) = 10 log(10⁻¹²) = -120 decibels

(b) Decibel level: plugging in I = 10⁻² watt per square meter into the equation, we get:

β = 10 log(10⁻² x 10⁻¹²) = 10 log(10⁻¹⁴) = -140 decibels

(c) Let's calculate the decibel level for the sound in part (a) using the given formula:

β₁ = 10 log(I₁ x 10⁻¹²) = 10 log(100 x I₂ x 10⁻¹²) = 10 log(I₂ x 10⁻¹⁴) + 20

where;

Using the result from part (b), we can substitute I₂ = 10⁻² watt per square meter and get:

β₁ = -140 + 20 = -120 decibels

Comparing this result to the decibel level for the sound in part (a) (which is also -120 decibels), we see that they are the same.

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Answer:

y = -3x

Step-by-step explanation:

Using the 'y=mx+c' form,

Since m = -3,

y = -3x + c

Substituting (0,0) into the above equation:

0 = 0 + c

Hence,

y = -3x

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The inverse of the function f(x) = 2(x - 4)³ + 7 is g(x) = ∛[(x - 7) / 2] + 4.

A mathematical notion known as a function explains the connection between two sets of values known as the domain and the range. A function takes a value from the domain as an input, applies some logic to it, and returns a value in the range. Just one output value in the range corresponds to each input value in the domain. Functions can be described verbally or with mathematical symbols. They are employed throughout the mathematical discipline as well as in the sciences of physics, engineering, economics, and computer science.

The given function is f(x) = 2(x - 4)³ + 7.

Swap the variables, that is substitute x = y and vice versa as follows:

x = 2(y - 4)³ + 7

x - 7 = 2(y - 4)³

(x - 7) / 2 = (y - 4)³

Taking the cube root of both sides gives:

y - 4 = ∛[(x - 7) / 2]

y = ∛[(x - 7) / 2] + 4

Therefore, the inverse of f(x) = 2(x - 4)³ + 7 is g(x) = ∛[(x - 7) / 2] + 4.

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Answer:

(5w + 9)(5w - 9)

Step-by-step explanation:

hmmm, dunno man.

(5w + 9)(5w - 9)

The estimate of 445 pints in ounces is 7120 ounces

The given measurement from the question can be represented as

Measure = 445 pints

By the standard metrics of conversion, we have

1 pint = 16 ounces

Using the above conversion rules as a guide, we have the following:

Measure = 445 * 16 ounces

Evaluate the product

So, we have the following representation

Measure =  7120 ounces

The above represents the required estimate

Hence, the estimate is 7120 ounces

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Using linear equations 5x + 8y = 115 and 3x + 5y = 70,  the cost of each table is $15 and the cost of each chair is $5.

What is a linear equation, exactly?

A linear equation is a mathematical expression that describes a straight line relationship between two variables. It can be written in the form y = mx + b, where x and y are variables, m is the slope of the line, and b is the y-intercept.

Now,

Let x = cost of each table and y= cost of each chair. Then, we can set up the following system of linear equations based on the given information:

5x + 8y = 115 (equation 1)

3x + 5y = 70 (equation 2)

Equation 1 represents the cost of 5 small tables with 8 chairs, and equation 2 represents the cost of 3 tables with 5 chairs.

Now,

Solve equation 2 for x:

3x + 5y = 70

3x = 70 - 5y

x = (70 - 5y)/3

Substitute x into equation 1:

5x + 8y = 115

5[(70 - 5y)/3] + 8y = 115

Simplify and solve for y:

350/3 - 25/3 y + 8y = 115

23/3 y = 115 - 350/3

y = 5

Substitute y = 5 into equation 2 and solve for x:

3x + 5y = 70

3x + 5(5) = 70

3x = 45

x = 15

Therefore,

               the cost of each table is $15 and the cost of each chair is $5.

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By answering the above question, we may state that As a result, the equation antenna's height is roughly 25 metres.

A math equation is a mechanism for connecting two claims by using the equals sign (=) to indicate equivalence. A mathematical statement that establishes the equivalence of two mathematical expressions is known as an equation in algebra. The equal symbol, for example, splits the numbers 3x + 5 and 14. A mathematical formula can be used to describe the relationship between two phrases written on opposite sides of a letter. The logo and programme are frequently the same. 2x - 4 Equals 2, for example.  

draw a diagram of the situation

                B

                |

                | h

                |

   A------------C---------

   |          θ2|        θ1

   |            |

   |            | 16 m

   |            |

   D            E

We need to calculate the height h of point B above point A. To begin, we may use the tangent function to get the heights of points C and E:

[tex]hC = 16 * tan(θ1)\\hE = 16 * tan(θ2)\\DE = hE - hC\\hB = hC + DE * tan(θ2)\\h = hB + 1.5\\θ1 = 41\\θ2 = 49\\DE = 16 * (tan(θ2) - tan(θ1)) ≈ 9.7587 m\\hC = 16 * tan(θ1) ≈ 12.2272 m\\hB = hC + DE * tan(θ2) ≈ 23.7333 m\\h ≈ hB + 1.5 ≈ 25.2333 m\\[/tex]

As a result, the antenna's height is roughly 25 metres.

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The expression for time will be, Time = 5/r + 10/w.

What exactly are expressions?

In mathematics, an expression is a combination of numbers, symbols, and operators that represent a value or a computation.

Expressions can be simple or complex, and they can contain variables, constants, and functions. They can be evaluated to produce a single value, or they can be simplified or transformed using mathematical rules and operations.

Now,

Let's assume that Juan ran at a speed of "r" miles per minute, and let's also convert the 10 minutes of walking to miles per minute by dividing by the walking speed "w".

Then, the total time Juan spent exercising can be expressed as:

Time = Time Running + Time Walking

Time Running = Distance / Speed = 5 / r

Time Walking = 10 / w

Therefore,

             the expression for the total amount of time Juan spent exercising is:

Time = 5/r + 10/w

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Answer:

Total amount = R41 337.50

Step-by-step explanation:

The value of the deposit is 15% of the total purchase price:

Deposit = 15/100 x R35 000

Deposit = R5 250

To calculate the balance that Claire will have to pay off, we need to subtract the deposit from the total purchase price:

Balance = Total purchase price - Deposit

Balance = R35 000 - R5 250

Balance = R29 750

To calculate the interest that Claire will have to pay on the balance, we can use the formula:

Interest = Principal x Rate x Time

where:

Principal is the amount of the balance

Rate is the annual interest rate (13%)

Time is the duration of the loan in years (3)

So, the interest that Claire will have to pay is:

Interest = R29 750 x 0.13 x 3

Interest = R11 587.50

Therefore, the total amount that Claire will have to pay back over the 3-year period is:

Total amount = Balance + Interest

Total amount = R29 750 + R11 587.50

Total amount = R41 337.50

Note that this assumes that the interest is calculated annually and added to the balance at the end of each year. In reality, the interest may be calculated differently depending on the terms of the hire purchase agreement.

Answer:

t = 1

Step-by-step explanation:

I will assume that there is a parenthesis missing:  the equation should read 3t-18=4(-3- 3/4t) and not 3t-18=4(-3- 3/4t

3t-18=4(-3- 3/4t)

3t-18= -12- 12/4t   [Remove parentheses by multiplying each term by 4]

3t-6= - 3/t    [Simplify]

3t^2-6t = -3  [Multiply both sides by t]

3t^2-6t +3 = 0

3(t^2-2t+1)=0

3(t-1)*(t-1) = 0

Two solutions, both the same value:  

(t-1) = 0

t = 1

===

Does t=1 result in 0 for the equation?

3t-18=4(-3- 3/4t)

3(1)-18=4(-3- 3/4*(1))

3-18 = 4(-3-3/4)

-15 = 4(-3.75)

-15 = -15  YES

The expression is undefined when x = 9. the expression will be undefined when x-9 = 0.

To find the values of x for which the expression is undefined, we need to look for values of x that would make the denominator of the expression equal to zero. In this case, the denominator is x-9. Therefore, the expression will be undefined when x-9 = 0. Solving for x, we get x = 9.

When x is equal to 9, the denominator becomes zero, which would make the expression undefined as dividing by zero is undefined in mathematics. For all other values of x, the expression is defined and can be evaluated.

We can verify this by substituting x = 9 in the expression and observing that it becomes (9² - 36)/(9-9), which is (81-36)/0, and division by zero is undefined.

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Complete Question:

For which values of x is the expression undefined?

[tex]x^2-36/x-9[/tex]