which expression does not belong? explain ​

Answer:

160 miles

Step-by-step explanation:

To find the unit rate, we want to know how many miles can we go in i hour.

96 ÷ 1 [tex]\frac{1}{2}[/tex]

1 [tex]\frac{1}{2}[/tex] can be written

[tex]\frac{2}{2}[/tex] + [tex]\frac{1}{2}[/tex] = [tex]\frac{3}{2}[/tex]      1 is the same as [tex]\frac{2}{2}[/tex]

Now we have

96 ÷ [tex]\frac{3}{2}[/tex]  if we get a common denominator, in this case 2, we can just divide a cross.

96 is equal to [tex]\frac{192}{2}[/tex]   ([tex]\frac{96}{1}[/tex] x [tex]\frac{2}{2}[/tex])

Now we have

[tex]\frac{192}{2}[/tex] ÷ [tex]\frac{3}{2}[/tex] =  [tex]\frac{64}{1}[/tex] = 64

We now know the unit rate is 64 miles in one hour.

The distance in 2 [tex]\frac{1}{2}[/tex] hours would be

64 + 64 + [tex]\frac{1}{2}[/tex](64)

64 + 64 + 32

160

Helping in the name of Jesus.

It will take Lush Gardens Co. 3 years and 3 months to settle the loan if it makes payments of $1,600 at the end of every month.

First, we need to find the amount of the loan.

Amount of loan = Total cost of the truck - Down payment

Amount of loan = $54,000 - $5,940 = $48,060

Next, we need to find the monthly interest rate. Since the interest is compounded semi-annually, we first need to find the semi-annual interest rate:

Semi-annual interest rate = 4.46% / 2 = 2.23%

Then, we can find the monthly interest rate using the formula:

Plugging in the numbers:

Monthly interest rate = (1 + 0.0223)^(1/12) - 1 = 0.001845

Now we can use the formula for the loan payment:

Loan payment = Monthly interest rate * Loan amount / (1 - (1 + Monthly interest rate)^(-n))

Where n is the number of months.

Plugging in the numbers:

$1,600 = 0.001845 * $48,060 / (1 - (1 + 0.001845)^(-n))

Solving for n using a financial calculator :

n = 38.98 months

Rounding up to the next payment period (which is 39 months), we get:

n = 3 years, 3 months

Therefore, it will take Lush Gardens Co. 3 years and 3 months to settle the loan if it makes payments of $1,600 at the end of every month.

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Step-by-step explanation:

4a.

as we can see in the table, if we have 1 processor and add a second one, we save 30 minutes (61 - 31 = 30).

4b.

if you solved 3. and filled the table correctly, you see that with 240 processors we need 1 minute + 60/240 = 1 1/4 = 1.25 minutes.

if we add additional 240 processors, we get 480 processors, and we need 1 minute + 60/480 = 1 1/8 = 1.125 minutes.

that means we save 1/8 minute (1 1/4 - 1 1/8 = 1/8) with doubling the amount of processors. that is 7.5 seconds.

4c.

the answer always depends on the circumstances.

in fast processes 7.5 seconds can be a long time, and it might be worth the effort to save that amount of time (like in real time processing as with industrial robotics, simulating and controlling trains or a space flight).

but for asynchronous calculations of certain numbers it might not matter, if the result is available 7.5 seconds earlier or later, and the extra effort is not worth it.

The logarithmic form of the equation a^3 = y is log_a(y) = 3

A logarithmic equation is an equation that involves the logarithm of one or more variables.

From the question, we have the following parameters that can be used in our computation:

a^3 = y

Take the logarithm of both sides of the equation

So, we have

3log(a) = log(y)

Divide both side by log(a)

So, we have

3 = log_a(y)

Rewrte as

log_a(y) = 3

Hence, the equation is (b) 3 = log_a(y)

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Answer:

The reduced echelon form of the given matrix B is [ 1 0 0 -5 | 0 ], [ 0 1 0 3 | 0 ], and [ 0 0 1 0 | 0 ]. The parametric description of the set of solutions for the given system of linear equations is { [5x4, -3x4, 0, x4] | x4 ∈ R }.

Step-by-step explanation:

Using row operations to reduce the matrix B to reduced row echelon form, we have:

[ 1 3 -5 4 | 0 ]

[ 1 4 -8 7 | 0 ]

[-3 -7 9 -6 | 0 ]

R2 - R1 -> R2

R3 + 3R1 -> R3

[ 1 3 -5 4 | 0 ]

[ 0 1 -3 3 | 0 ]

[ 0 2 4 6 | 0 ]

R1 - 3R2 -> R1

R3 - 2R2 -> R3

[ 1 0 4 -5 | 0 ]

[ 0 1 -3 3 | 0 ]

[ 0 0 10 0 | 0 ]

R3/10 -> R3

[ 1 0 4 -5 | 0 ]

[ 0 1 -3 3 | 0 ]

[ 0 0 1 0 | 0 ]

R2 + 3R3 -> R2

R1 - 4R3 -> R1

R2 + 3R3 -> R3

[ 1 0 0 -5 | 0 ]

[ 0 1 0 3 | 0 ]

[ 0 0 1 0 | 0 ]

Therefore, the reduced echelon form of the matrix B is:

[ 1 0 0 -5 | 0 ]

[ 0 1 0 3 | 0 ]

[ 0 0 1 0 | 0 ]

asterisk

can you make it step by step easy to understand

Certainly! Here are the steps to find the reduced row echelon form of the matrix B = [1, 3, -5, 4, 1, 4, -8, 7, -3, -7, 9, -6]:

Write the matrix in augmented form, with a vertical line separating the coefficients from the constant terms.

[ 1 3 -5 4 | 0 ]

[ 1 4 -8 7 | 0 ]

[-3 -7 9 -6 | 0 ]

Use row operations to transform the matrix into row echelon form. The goal is to create zeros below the leading entries (the first nonzero element) in each row. Here are the steps:

a. Subtract the first row from the second row, and subtract 3 times the first row from the third row:

[ 1 3 -5 4 | 0 ]

[ 0 1 -3 3 | 0 ]

[ 0 2 4 6 | 0 ]

b. Subtract 3 times the second row from the first row, and subtract 2 times the second row from the third row:

[ 1 0 4 -5 | 0 ]

[ 0 1 -3 3 | 0 ]

[ 0 0 10 0 | 0 ]

c. Divide the third row by 10 to create a leading 1 in the third row:

[ 1 0 4 -5 | 0 ]

[ 0 1 -3 3 | 0 ]

[ 0 0 1 0 | 0 ]

Use row operations to transform the matrix into reduced row echelon form. The goal is to create leading 1's in each row, and zeros above and below the leading 1's. Here are the steps:

a. Subtract 4 times the third row from the first row, and subtract 3 times the third row from the second row:

[ 1 0 0 -5 | 0 ]

[ 0 1 0 3 | 0 ]

[ 0 0 1 0 | 0 ]

The matrix is now in reduced row echelon form. The leftmost nonzero entry in each nonzero row is 1, and each leading 1 is the only nonzero entry in its column. The rows are arranged so that all rows with all zeros are at the bottom of the matrix.

Therefore, the reduced row echelon form of the matrix B is:

[ 1 0 0 -5 | 0 ]

[ 0 1 0 3 | 0 ]

[ 0 0 1 0 | 0 ]

For (b):

From the reduced echelon form obtained in part (a), we can write the system of equations as:

x1 + 0x2 + 4x3 = -5

0x1 + x2 - 3x3 = 3

0x1 + 0x2 + x3 = 0

We can solve for the basic variables (x1, x2, x3) in terms of the free variable(s):

x1 = -5 - 4x3

x2 = 3 + 3x3

x3 = free

Therefore, the general solution to the system of equations is:

x = [-5 - 4x3, 3 + 3x3, x3]

where x3 is any real number, since it is the free variable. This is the parametric description of the set of solutions. We can also write this solution set in set-builder notation as:

{ [-5 - 4x3, 3 + 3x3, x3] | x3 ∈ R }

This means that any vector in the solution set can be obtained by choosing a value for the free variable x3 and plugging it into the expressions for x1, x2, and x3. For example, if we choose x3 = 0, we get the solution (x1, x2, x3) = (-5, 3, 0). If we choose x3 = 1, we get the solution (x1, x2, x3) = (-9, 6, 1), and so on.

Hope this helps! I'm sorry if it doesn't. If you need more help, ask me! :]

Answer:

(x - 5)² = 18

Step-by-step explanation:

x² - 10x + 7 = 0 ( subtract 7 from both sides )

x² - 10x = - 7

using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 5)x + 25 = - 7 + 25

(x - 5)² = 18 ← in the form (x - p)² = q

The value of b is solved using square root is found to be b = 2√ac.

The section of a quadratic formula following the square root symbol, b²-4ac, is the discriminant. If we have two solutions, single solution, or none at all, the discriminant informs us.

The given equation is:

b²- 4ac = 0

Separating unknown value from the equation:

b² = 4ac

Taking square root both side.

√b² = √4ac

Simplifying

b = 2√ac

Thus, the value of b is solved using square root is found to be b = 2√ac.

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The simplification by expressing fractional exponents instead of radicals is a^1/2. b^1/2 or  (ab)^(1/2)

The expression in radical form was been provided as √ab and this is been expected from use to express it ionform of fractional exponent form.

√ab

note that;

√a = a^1/2

√ab = √a * √b

By utilixzing the properties of square root function, then we can have the expressions as ;

√ab = √a √b

√ab = a^1/2 * b^1/2

√ab =a^1/2. b^1/2

=a^1/2. b^1/2 or  (ab)^(1/2)

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Therefore, the value of 'a' that satisfies the equation is a = 2/7.

A relationship between two expressions in mathematics is known as an equation, and it is written as an equality on both sides of the equal to sign. An equation is, for instance, 3y = 16.

To solve for 'a' in the equation 10a-2=4a-1a, we need to simplify and isolate the variable on one side of the equation.

10a - 2 = 4a - 1a

First, we can simplify the right side of the equation by combining the like terms:

10a - 2 = 3a

Next, we can isolate the variable 'a' on one side of the equation by subtracting 3a from both sides:

10a - 2 - 3a = 0

Simplifying the left side of the equation:

7a - 2 = 0

7a = 2

a = 2/7

Therefore, the value of 'a' that satisfies the equation is a = 2/7.

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Answer:

5.3333

Step-by-step explanation:

We want to divide 16 by 3, and it will be 5.333333....

The 3 is repeating in this question, but to the 4th decimal place it will be 5.3333.

Answer:

5.3333

Step-by-step explanation:

A fraction is a fragment of a whole number, used to define parts of a whole. The whole can be a whole object or many different objects. The number at the top of the line is called the numerator, whereas the bottom is called the denominator.

To convert a fraction to a decimal, you divide the numerator by the denominator. In this case, it is 16 divided by 3.

To round this number to 4 decimal places, you look at the fifth digit after the decimal point (which is 3). Because this digit is less than 5, you don't need to round the fourth number up, and the final result is 5.3333.

Therefore, 16 divided by 3 is approximately 5.3333 when rounded to 4 decimal places.

Answer:

We can use trigonometry to solve the problem. Let's call the height of the tower "h". Then we can use the tangent function to find "h":

tan(85°) = h/80

Multiplying both sides by 80, we get:

h = 80 tan(85°) ≈ 884.2 ft

Rounding to the nearest tenth, the height of the Eiffel Tower is approximately 884.2 ft.

Step-by-step explanation:

Therefore , the solution of the given problem of function comes out to be f[g(x)] = 3x² - 2 is the formula for the function f[g(x)].

The mathematics programme covers a wide range of topics, including mathematics, numbers, but also their subsets, along with building, construction, and the both real and fictional geographic locations. A work covers the connections between different variable elements that all work together to produce the same result. A utility is made up of several distinctive components that, when combined, produce specific results for each input.

Here,

We must first assess g(x) in order to determine f[g(x)], and then we can use the outcome to determine f[g(x)].

=> g(x) = x² + 1

When we substitute g(x) for f(x), we obtain:

=> f[g(x)] = f(x² + 1)

=> 3(x² + 1) - 5 = 3x² + 3 - 5

=> 3x² - 2

Therefore, f[g(x)] = 3x² - 2 is the formula for the function f[g(x)].

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The unknown length in the rectangle is ? = 8cm

We we want to find the unknown length.

First, if we look just at the pink and yellow rectangles we can see that these have a combined area of:

A = 12cm² + 18cm²

A = 30cm²

And we know that one side measures 6cm, then the length of AD is:

AD*6cm = 30cm²

AD = 30cm²/6cm

AD = 5cm

Now, the yellow and purple rectangles have a combined area of:

A = 18cm² + 22cm² = 40cm²

Then we can write:

?*AD = 40cm²

?*5cm = 40cm²

? = 40cm²/5cm

? = 8cm

That is the unknown lenght.

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The center of the circle lies on the x-axis.
The radius of the circle is 3 units. 

The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

The standard equation of a circle is expressed as: Centre is (-g, -f)radius = √g²+f²-CGiven a circle whose equation is Get the centre of the circle2gx = -2x2g = -2g = -1Similarly, 2fy = 0f = 0Centre = (-(-1), 0) = (1, 0)This shows that the center of the circle lies on the x-axisr = radius = √g²+f²-Cradius = √1²+0²-(-8)radius =√9 = 3 unitsThe radius of the circle is 3 units.

 For the circle x² + y² = 9, the radius is expressed as:r² = 9r = 3 units Hence the radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

value from least to greatest is

A<B<C<D

A fraction is a numerical quantity that represents a part of a whole or a ratio of two quantities. It is expressed in the form of one number, called the numerator, divided by another number, called the denominator, and is typically written as a/b, where "a" is the numerator and "b" is the denominator.

Part a)

Let 5.7 (bar on 7) be x

x=5.777777... .....(1)

Multiply the equation by 10,

10x=57.77777... ....(2)

(2)-(1),

9x=52

x=52/9=5.777777778

Partb)

Let 5.75 (bar on 75) be x

x=5.75757575... .....(1)

Multiply the equation by 100,

100x=575.75757575.. ....(2)

(2)-(1),

99x=569.99

x=190/33=5.757575758

Part c)

Let 5.75 (bar on 5) be x

x=5.7555555... .....(1)

Multiply the equation by 10,

10x=57.55555555... ....(2)

Multiply the equation by 10,

100x=575.5555.. ....(3)

(3)-(2),

90x=52

x=259/45=5.755555556

Hence, value from least to greatest is

A<B<C<D

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The answer of the given question based on the ordering from the least to greatest  the answer is the correct answer is (A) DBCA.

The decimal system is a number system that uses the base 10, meaning that there are 10 digits (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) that can be used to represent any quantity. This system is also called the base-10 numeral system, denary system, or Hindu-Arabic numeral system.

In the decimal system, each digit represents a different power of 10. For example, in the number 357, the 7 represents the units, 5 represents the tens, and 3 represents the hundreds.

This system is widely used in everyday life, in which numbers are expressed in decimal form, such as money, time, and measurements. It is also used in mathematics, science, and engineering as the standard way of expressing numbers.

The correct order from least to greatest will be :

A. 5.7

D. 5.75

B. 5.75

C. 5.75

Therefore, the correct answer is (A) DBCA.

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The answer is 3 and 1

Step-by-step explanation:

Given : 2x ^ 2 - 8x + 6 = 0

To Find: x

Solution:

2x ^ 2 - 8x + 6 = 0

2(x ^ 2 - 4x + 3) = 0

x ^ 2 - 4x + 3 = 0

x ^ 2 - x - 3x + 3 = 0

x(x - 1) - 3(x - 1) = 0

(x - 3)(x - 1) = 0

x - 3 = 0

x = 3

x - 1 = 0

x = 1

Thus the solution are 3 and 1

Answer: The solution to a system of equations in two variables represents the values of the variables that satisfy both equations simultaneously.

To check which equations might make up the system with a solution of (5,-19), we can substitute x = 5 and y = -19 into each equation and see if they are both satisfied.

Substituting x = 5 and y = -19 into the first equation, we get:

y = 2x - 23

-19 = 2(5) - 23

-19 = -13

This is not true, so the first equation is not part of the system.

Substituting x = 5 and y = -19 into the second equation, we get:

y = x - 17

-19 = 5 - 17

-19 = -12

This is not true, so the second equation is not part of the system.

Substituting x = 5 and y = -19 into the third equation, we get:

y = -7x + 16

-19 = -7(5) + 16

-19 = -19

This is true, so the third equation is one of the equations in the system.

Substituting x = 5 and y = -19 into the fourth equation, we get:

y = -21 - 9x

-19 = -21 - 9(5)

-19 = -64

This is not true, so the fourth equation is not part of the system.

Substituting x = 5 and y = -19 into the fifth equation, we get:

y = -3x - 6

-19 = -3(5) - 6

-19 = -21

This is not true, so the fifth equation is not part of the system.

Therefore, one possible system of equations with a solution of (5,-19) is:

y = -7x + 16

We would need another equation to form a complete system with a unique solution.

Step-by-step explanation:

Answer:

i don’t know sorry

Step-by-step explanation:

nothing

"To find how many newspapers are in one pile if 80 newspapers are divided into 5 piles, we need to divide the total number of newspapers (80) by the number of piles (5):

80 / 5 = 16

Therefore, there are 16 newspapers in each pile if 80 newspapers are divided into 5 piles." (ChatGPT, 2023)

The minimum number of children in the colony is 47 given the ratio 6 : 4 : 3

Given that

Ratio = 6 : 4 : 3

We are given the ratio of male to female to children as 6:4:3.

Let the common ratio be x, so the actual number of males, females, and children respectively will be 6x, 4x, and 3x.

Total number of members in the colony = 6x + 4x + 3x = 13x.

We are given that the minimum number of members in the colony is 200.

So,

13x = 200

x = 200/13

The actual number of children in the colony 3x is

Children =  3 * (200/13) = 46.15

Children = 46.15

However, since we cannot have a fraction of a child, we round to the nearest whole number.

Therefore, the minimum number of children in the colony is 47.

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Answer:C

Step-by-step explanation:

you see x=-3 is match for y=2

Answer:

2

Step-by-step explanation:

Look for where the line crosses x=-3. It crosses at y=2. so the answer is the third, 2

Answer:

[tex]\boxed{\textsf{y = 3}}[/tex]

Step-by-step explanation:

[tex]\textsf{We are asked to solve for y.}[/tex]

[tex]\textsf{We should begin by \underline{simplifying} the equation.}[/tex]

[tex]\textsf{First, begin by dividing 750 from \underline{both sides} of the equation.}\\[/tex]

[tex]\Large\underline{\textsf{Divide:}}[/tex]

[tex]\mathtt{\frac{162000}{750} = \frac{750 \times 6^y}{750} .}[/tex]

[tex]\mathtt{216=6^y}[/tex]

[tex]\Large\underline{\textsf{Continue Dividing By 6:}}[/tex]

[tex]\mathtt{\frac{216}{6} = 36 (^{y-1})}[/tex]

[tex]\mathtt{\frac{36}{6} = 6 (^{y-2} )}[/tex]

[tex]\Large\underline{\textsf{Identify y:}}[/tex]

[tex]\mathtt{6^1 = 6. \ 6^{1+2} = 216. \ (6^3)}[/tex]

[tex]\boxed{\textsf{y = 3}}[/tex]

The linear model is Population = 92 + 2.35x and the exponential model is Population= 92(1.0187)ˣ.

An exponential model implies that the change in y is proportionate to its present value, whereas a linear model assumes that the change in y is constant for each unit change in the explanatory variable (x). To put it another way, an exponential model assumes a varying rate of change, whereas a linear model implies a constant rate of change.

Let us suppose number of years = x.

Given that, the U.S. population in 1910 was 92 million people. In 1990, the population was 280 million.

From 1910 to 1990 is a period of 80 years, the increase in population over this period is 280 million - 92 million = 188 million.

Therefore, the average annual increase in population is 188 million / 80 years = 2.35 million.

Thus, the linear model is:

Population = 92 + 2.35x

The exponential model is:

The population grew from 92 million in 1910 to 280 million in 1990, a factor of 280/92 = 3.0435.

The period of growth is 80 years, so the annual growth rate can be calculated as:

rate = (3.0435)^(1/80) - 1 = 0.0187 or 1.87%

Population= 92(1.0187)ˣ

Hence, the linear model is Population = 92 + 2.35x and the exponential model is Population= 92(1.0187)ˣ.

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Answer:

1. the radius is increasing at a rate of approximately 0.265 cm/s when the radius is 3 cm

2. the radius is increasing at a rate of approximately 0.159 cm/s when the circumference is 1 cm

Step-by-step explanation:

We can use the formulas for the area and circumference of a circle to solve these problems:

a. To find how fast the radius is changing when the radius is 3 cm, we can use the formula for the area of a circle:

A = πr^2

Taking the derivative of both sides with respect to time, t, we get:

dA/dt = 2πr dr/dt

where dr/dt is the rate of change of the radius.

We know that dA/dt = 5 cm²/s, and when the radius is 3 cm, we can plug in these values to solve for dr/dt:

5 = 2π(3) dr/dt

dr/dt = 5/(6π) cm/s ≈ 0.265 cm/s

Therefore, the radius is increasing at a rate of approximately 0.265 cm/s when the radius is 3 cm.

b. To find how fast the radius is changing when the circumference is 1 cm, we can use the formula for the circumference of a circle:

C = 2πr

Taking the derivative of both sides with respect to time, t, we get:

dC/dt = 2π dr/dt

where dr/dt is the rate of change of the radius.

We know that when the circumference is 1 cm, C = 1 cm, so we can plug in these values to solve for dr/dt:

1 = 2π dr/dt

dr/dt = 1/(2π) cm/s ≈ 0.159 cm/s

Therefore, the radius is increasing at a rate of approximately 0.159 cm/s when the circumference is 1 cm.

To make 16 cookies it need 1 cup of sugar.

Problem solving questions are questions that require critical thinking and analytical skills to solve a particular issue or challenge, often in a systematic and logical way.

To make 1 cookie, you need 1 1/4 cups of sugar ÷ 20 cookies = 1/16 cups of sugar.

To make 16 cookies, you need 16 cookies x 1/16 cups of sugar per cookie = 1 cup of sugar.

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Answer:

m = 2

Step-by-step explanation:

Slope = rise/run or (y2 - y1) / (x2 - x1)

Points (5, 12) (7, 16)

We see the y increase by 4 and the x increase by 2, so the slope is

m = 4/2 = 2

So, the slope is 2

1. The prοbability that yοu draw a red marble 7/24

2. The prοbability οf chοοsing exactly οne οf each cοlοr is 63/253

3. The prοbability that yοu draw 5 green marbles in a rοw is 0.0057

Prοbability is a branch οf mathematics in which the chances οf experiments οccurring are calculated. It is by means οf a prοbability, fοr example, that we can knοw frοm the chance οf getting heads οr tails in the launch οf a cοin tο the chance οf errοr in research.

1. The prοbability οf drawing a red marble is given by the number οf red marbles divided by the tοtal number οf marbles in the jar:

P(red) = 7/(7+9+8) = 7/24

2. The prοbability οf chοοsing exactly οne οf each cοlοr, if yοu pick 3 marbles frοm the jar, can be fοund using the hypergeοmetric distributiοn. The tοtal number οf ways tο chοοse 3 marbles frοm 24 is:

C(24,3) = 2024

The number οf ways tο chοοse οne οf each cοlοr is:

C(7,1) * C(9,1) * C(8,1) = 798 = 504

Therefοre, the prοbability οf chοοsing exactly οne οf each cοlοr is:

P(1 οf each cοlοr) = 504/2024 = 63/253

3. The prοbability οf drawing 5 green marbles in a rοw withοut replacement can be fοund as fοllοws. Therefοre, the prοbability can be calculated as:

P(5 green in a rοw) = (9/24) * (8/23) * (7/22) * (6/21) * (5/20) = 0.0057 (rοunded tο fοur decimal places)

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Answer:

Step-by-step explanation:

o find a linear function that can be used to predict the number of nations participating x years after 1988, we can use linear regression analysis. Using a spreadsheet program or calculator with linear regression capabilities, we obtain:

y = 1.9632x + 51.3276

where y is the predicted number of nations participating and x is the number of years after 1988.

To predict those years in which more than 100 nations will participate, we can substitute y = 100 into the linear function and solve for x:

100 = 1.9632x + 51.3276

48.6724 = 1.9632x

x ≈ 24.8

Therefore, more than 100 nations will participate in the Winter Games approximately 24.8 years after 1988, or in the year 2013.

The fourth expression 3⁻⁷/3⁻⁵ is equivalent to  3⁻².

What exactly are expressions?

In mathematics, an expression is a combination of numbers, variables, operators, and functions that are combined in a particular way to represent a mathematical value or relationship. Expressions can be simple or complex, and they can involve any number of mathematical operations.

Expressions can be used to represent many mathematical concepts:

Now,

To find the equivalent expression of 3⁻², we can simplify each of the given choices using the rules of exponents:

1. 3⁻²/3³ = 1/3²⁺³ = 1/3⁵

2. 3⁻⁷/3⁵ = 3⁻⁷⁻⁵ = 3⁻¹²

3. 3³/3⁻¹² = 3³⁺¹² = 3¹⁵

4. 3⁻⁷/3⁻⁵ = 3⁻⁷⁺⁵ = 3⁻²

Out of the given choices, the fourth choice 3⁻⁷/3⁻⁵ is equivalent to 3⁻².

To know more about expressions visit the link

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