Can someone help meee!!!

\(\cfrac{89.40~~ - ~~\stackrel{ \textit{minus the tax of each} }{0.50-0.50-0.50-0.50-0.50-0.50}}{6}\implies \cfrac{86.40}{6}\implies \stackrel{ each }{14.40}\)

the answer would be C

Step-by-step explanation:

seeing the graph u can see that it moving 2 right and 1 up

The slope of given line from the graph is 2. Therefore, option D is the correct answer.

In the graph, it is given that x-axis represents time (min) and y-axis represents volume(gal).

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The formula to find the slope of a line is slope = Rise/Run

From the graph, the slope is

Slope (m)= 6/3

= 2

The slope of given line from the graph is 2. Therefore, option D is the correct answer.

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Answer:

c

Step-by-step explanation:

Answer:

lets say All of the above.

Step-by-step explanation:

The minimal approximation error A-A 2achievable by a rank-1 approximation A to A is

||A - A1||₂=0 where A is 2×2 matrix.

We have given a matrix A as seen in above figure or A = [ 5 15 ; 6 18 ; -1 -3 ; -4 -12 ; 2 6]

note here that C₂= 3C₁

where Cᵢ --> iᵗʰ column

v = [ 5 ; 6 ; -1 ; -4 ; 2]

||v||² = 82 => ||v|| = √82

and A At v = 820 v

and A At = [ 82 246 ; 246 738]

AAt [1;3] = 820[1;3]

=> v1 = 1/√10(1,3)^t

Then the best rank of 1 approx

= √820 /√80√10 [ 5 ; 6 ; -1 ; -4 ; 2] [ 1 3]

= A

Since , the rank of matrix A is one so, the minimal approx. value is ||A - A1||2 = 0

Hence, the minimal Approx. ||A - A1||2 = 0 .

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Complete question:

Consider the matrix A: A = [5 15] 6 18 -1 -3 -4 -12 [26] What is the minimal approximation error A-A 2 achievable by a rank-1 approximation A to A? Hint: Can you determine this without explicitly calculating the SVD?

Answer:

you have to sell 6 tables to meet all requirements

Step-by-step explanation:

chairs=$50x

tables=$550x

24 chairs×50= $1200

4100-1200= $2900

take $2900 and divide by $550 to find the exact number of tables which is 5 but selling 5 tables and 24 chairs doesnt reach the $4100 mark so I rounded up to 6 tables which doesnt surpass the maximum number of furniture(32) but beats the $4100 mark

Answer:

11.2

Step-by-step explanation:

The answer is 11.2

11.2*.25=2.8

11.2-2.8=8.4

Hope this helps <3

Answer:

\( {x}^{2} + 9 \\ \\ = {x}^{2} + 3 {}^{2} \\ \\ = (x + 3)(x - 3)\)

Answer:

\( {x}^{2} + 9 = 0\)

\( {x}^{2} + 9\)

\( {x}^{2} + {3}^{2} \)

\((x + 3)(x + 3)\)

Answer:

Step-by-step explanation:

12,787

a. ^p^ represents the proportion of adults who chose chocolate pie, ^q^ represents the proportion of adults who did not choose chocolate pie, n represents the sample size, E represents the margin of error, and p represents the population proportion.

b. The value of α for a 99.99% confidence level is 0.0001.

a. ^p^ represents the sample proportion of adults who chose chocolate pie, ^q^ represents the proportion of adults who did not choose chocolate pie (1 - ^p^), n represents the sample size of 1500, E represents the margin of error of ±3 percentage points (0.03), and p represents the population proportion of adults who choose chocolate pie.

b. To find the value of α for a 99.99% confidence level, we need to subtract the confidence level from 100% to get the level of significance, which is 0.0001. This means that there is a 0.0001 probability of rejecting the null hypothesis when it is actually true.

The level of significance (α) is used to determine the critical value for the test statistic, which is then used to determine whether or not to reject the null hypothesis.

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By solving the equation by the method of completing the squares, it can be obtained that

\(x = 1 + \sqrt{\frac{1}{2}}i\) or \(x = 1-\sqrt{\frac{1}{2}}i\) are the solutions.

What is Quadratic equation?

At first it is important to know about equation

Equation shows the equality between two algebraic expressions by connecting the two algerbraic expressions by an equal to sign.

A two degree equation is known as Quadratic equation.

Here the method of completing the squares is used.

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

\(2(x^2 - 2x + \frac{3}{2})=0\\x^2 - 2x + \frac{3}{2}=0\\x^2 - 2x + 1^2 -1^2+\frac{3}{2}=0\\(x - 1)^2+\frac{1}{2} = 0\\(x - 1)^2 = -\frac{1}{2}\\x-1= \sqrt{-\frac{1}{2}}\\x = 1 \pm \sqrt{\frac{1}{2}}i\)

\(x = 1 + \sqrt{\frac{1}{2}}i\) or \(x = 1-\sqrt{\frac{1}{2}}i\)

where \(i = \sqrt{-1}\)

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The area of the square is increasing at a rate of 8 cm²/s when the area of the square is 16 cm².

When the side length of a square increases, the area of the square also increases. The formula for area of a square is side length multiplied by itself.

Therefore, when the side length of a square increases at a rate of 2 cm/s, the area of the square increases at a rate of 2 cm/s multiplied by 2 cm/s, or 4 cm²/s.

However, since the side length of the square is 16 cm when the area of the square is 16 cm², the rate at which the area of the square increases is 2 cm/s multiplied by 16 cm, or 8 cm²/s.

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The true statements are f(-5) = -40,  f(0) = 3 and  f(3) = 0

Given the function;

f(a) = 3a – a2

For f(-5), we substitute the value of a as -5, we have

f(-5) = 3(-5) - (-5)²

f(-5) = -15 - 25

f(-5) = -40

For f(4), we have

f(4) = 3(4) = 3(16)

f(4) = 12 - 48

f(4) = -36

For f(-1), we have

f(-1) = 3(-1) - (-1)²

f(-1) = -3 - 1

f(-1) = -4

For f(0), we have

f(0) = 3(0) -(0)

f(0) = 0

For f(3), we have

f(3) = 3(3) - 3²

f(3) = 0

Thus, the true statements are f(-5) = -40,  f(0) = 3 and  f(3) = 0

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Answer:

chips 1.50 cents hot dogs 2 dollars

Step-by-step explanation:

Hot do is 2 dollars because the same chips were put but 1 extra dog is 2 dollard and you divide from there and get 1.50 for chips

Answer:

=3x-3=7, x=10/3

Step-by-step explanation:

Answer:sorry

Step-by-step explanation:

I really need points

Answer:

y=2 and 3/4

Step-by-step explanation:

Answer:

Step-by-step explanation:

y-3/4 =4 1/4

i will add the whole into the fraction and add also 3/4

y=3/4+15/4

y=18/4=4 2/4=4 1/2

Answer:

X=5

15x=75

Step-by-step explanation:

See the two pictures, explanation and solution ^_^

In order to check your answer is true or false. We check the two analyzes whether the number from the equation becomes 19x. First you multiply the first number in the first bracket by the second number in the second bracket 2x by 3 to get 6x. Secondly, you multiply the second number of the first bracket by the first number of the second bracket -5 by 4x to get -20x. The sum of the two numbers that you extracted from multiplying the numbers in parentheses (6x) + (-20x) equals - 14x, so this number is not the number 19x, so the first analysis error . Try it for the second analysis .

You can multiply the parentheses together and check the solution too.

\((2x - 5)(4x + 3) \\ (2x)(4x) + (2x)(3) + ( - 5)(4x) + ( - 5)(3) \\ = 8 {x}^{2} + 6x - 20x - 15 \\ = 8 {x}^{2} - 14x - 15\)

\((8x - 5)(x + 3) \\ (8x)(x) + (8x)(3) + ( - 5)(x) + ( - 5)(3) \\ = 8 {x}^{2} + 24x - 5x - 15 \\ = 8 {x}^{2} + 19x - 15\)

the area increasing is dA/dt = 31  in²/ sec when  the length of its base is decreasing at the rate of 4 m/sec and its height is increasing at the rate of 3m/sec

The area of the rectangle is:

A(t)  = length * breadth     where  b is the base and h the height

Differentiation on both sides of the equation we obtain

dA/dt  =  (1/2)* db/dt * h + (1/2)* dh/dt * b   (1)

db/dt  = 4 in/sec

dh/dt =  3 n/sec

b =  6 in

h = 2 in

By substitution in (1)

dA/dt =  0,5* 3*14 +  0,5* 2*10

dA/dt =  21 in² /sec + 10 in²/sc

dA/dt = 31  in²/ sec

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If sample has mean-mass of 2.47 grams and standard-deviation of 0.04 gram, then test-statistic for population mean has (d) a "t-distribution" with 9 degrees-of-freedom.

A "test-statistic" is defined as a value calculated from a sample of data which is used in hypothesis testing.

The test statistic(t) for population mean can be calculated using formula:

⇒ t = (x' - μ)/(s/√n),

where x' = sample mean, μ = population mean, s = sample standard deviation, and n = sample size,

Substituting the values,

We get,

⇒ t = (2.47 - 2.5)/(0.04/√10) ≈ -2.38,

Since the population standard deviation is unknown, we need to use the t-distribution to find the p-value and make a conclusion about the null hypothesis.

The degrees-of-freedom for the t-distribution is = n - 1 = 10 - 1 = 9.

Therefore, the test statistic for the population mean has a t-distribution with 9 degrees of freedom, the correct option is (d).

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The given question is incomplete, the complete question is

The distribution of mass for United States pennies minted since 1982 is approximately normal with mean 2.5 grams. A random sample of 10 pennies minted since 1982 was selected. The sample had a mean mass of 2.47 grams and a standard deviation of 0.04 gram.

The test statistic for the population mean has which of the following distributions?

(a) A normal distribution with mean 0 and standard deviation 1,

(b) A normal distribution with mean 2.5 and standard deviation 0.04,

(c) A normal distribution with mean 2.47 and standard deviation 0.04,

(d) A t-distribution with 9 degrees of freedom,

(e) A t-distribution with 10 degrees of freedom.

An overseas phone call is charged at one rate (a fixed amount) for the first minute

and at a different rate for each additional minute.

If a 7 minute call costs $10, and a 4 minute call costs $6.40, find each rate.

SOLUTION

This is a case of partial variation

C = a + k b

where C = cost of the call.

a = constant rate

k = per unit rate for a different rate for each additional minute.

when C= $10, b = 7

when C = $ 6. 40 , b = 4

10 = a + 7 k -------------- equ 1

6.40 = a + 4 k ................. equ 2

equation 1 minus equation 2 , we have :

10 - 6. 40 = 7 k - 4 k

3.60 = 3k

Divide both sides by 3 , we have :

k = 3. 60 / 3

k = 1.20

put k = 1. 20 in equ 1 , we have :

10 = a + 7 k

10 = a + 7 ( 1.20 )

10 = a + 8.40

a = 10 - 8. 40

a = 1. 60

CONCLUSION :

a = constant rate = $ 1.60 ( fixed amount) for the first minute.

k = per unit rate for a different rate for each additional minute = $ 1.20 per minute.



The two numbers in the system of equation is 5 and 13.

A group of multiple-variable equations that must all be solved concurrently make up a system of equations. Finding values for the variables that satisfy every equation in a system of equations is the objective. Each equation in the system reflects a connection between the variables. In order to find a singular solution or a group of solutions, systems of equations can be solved using a variety of methods, such as substitution or elimination. In many disciplines, including mathematics, physics, engineering, and economics, systems of equations can occur.

Let us suppose the two numbers as x and y.

x + y = 18

x - y = -8

The second equation can be written as:

x + 8 = y

Substitute the value of y in equation 1:

x + x + 8 = 18

2x = 10

x = 5

Substitute the value of x to get y:

x + y = 18

5 + y = 18

y = 13

Hence, the two numbers in the system of equation is 5 and 13.

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The closest value to the circumference of the given wheel is 424.35 meters.

A wheel has a radius of 67.5 meters. What is closest to the circumference of this wheel?

The circumference of a circle is the distance around its edge or perimeter. The formula for the circumference of a circle is given by:

Circumference = 2πr, where r is the radius of the circle and π (pi) is a mathematical constant that approximates to 3.14.Rewriting the formula to find the circumference,

we have:Circumference = 2 × 3.14 × 67.5= 2 × 3.14 × 67.5= 424.35 Meters

Therefore, the closest value to the circumference of the given wheel is 424.35 meters.

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The recursive equation in the form An+1=f(An), n=1,2,3... satisfied by the sequence {3, 6, 12, 24, 48, ...} is An+1 = 2 × An.

To find a recursive equation in the form An+1=f(An), n=1,2,3... satsifed by the sequence {3, 6, 12, 24, 48, ...}, we need to find the pattern and the rule that generates the terms of the sequence.

Step 1: Finding the pattern We can observe that each term in the sequence is obtained by doubling the previous term. So, the pattern is:3, 6, 12, 24, 48, ...

Step 2: Writing the recursive equation We can write the recursive equation by expressing each term in the sequence as a function of the previous term.

Let's call the nth term An, then we have:

An+1 = 2 × An The above equation shows that the (n+1)th term in the sequence is obtained by doubling the nth term. This is because each term is obtained by doubling the previous term.

Therefore, the recursive equation in the form An+1=f(An), n=1,2,3... satisfied by the sequence {3, 6, 12, 24, 48, ...} is An+1 = 2 × An.

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Let's use the variable x to represent the price of the television set before taxes.

If the tax rate is 4%, then the original price is multiplied by 1.04, so it is equal 1.04x.

The final price is $520, so we have:

So the price before taxes is $500.00.

Answer:

7/2

Step-by-step explanation:

You do rise over run

You rise 7 and run 2

Answer 7/2

Using slopes, it is found that the lines are parallel.

Line PQ has points P(2,-1) and Q(-3,-1), hence, the slope is:

\(m_{PQ} = \frac{-1 - (-1)}{-3 - 2} = 0\)

Line RS has points R(-11,9) and S(-7,9), hence, the slope is:

\(m_{RS} = \frac{9 - 9}{-7 - (-11)} = 0\)

Same slope, so parallel.

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Answer:

x = 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Algebra I

Step-by-step explanation:

Step 1: Define

m(x) = 4x - 10

m(x) = -2

Step 2: Solve for x