at the grocery store, 8 oranges cost $4. What is the cost for 9 oranges

The systems of linear equations have been matched with their respective solutions as shown in the image attached below.

A system of linear equations can be defined as an algebraic equation of the first order that has two (2) variables with each of its term having an exponent of one (1).

In this exercise, you're required to match the systems of linear equations with their respective solutions as shown in the image attached below.

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Answer:

11.

Step-by-step explanation:

100-32    = money after hat purchase

(100-32) dollars  / 6 dollars / scarf   = 11.33   or 11 scarves (because you cannot buy a fraction of a scarf)

In linear equation, X = 200 millileters of each solution must joy use .

What in mathematics is a linear equation?

A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept.

              Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.

X is the amount of the 20% saline solution

Y is the amount of the 40% saline solution

X + Y = 200

0.2X + 0.4Y = 0.20 * 200 = 40

Solving the first equation for Y and multiplying

the second equation by 10 to clear away the decimals

Y  = 200 - X

2x + 4y = 400

2x + 4(200 - x) = 400

2x + 800 - 4x = 400

0 = 400 - 2x - 800 + 4x

0 = 2x - 400

400 = 2x

x = 200

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Answer:

C: The graph is not a function of x because the line y = 0 intersects the graph at two points.

Step-by-step explanation:

The line y = 0 will intersect the ellipse at the points, (-4 , 0) , (4 , 0)

Answer:

6

Step-by-step explanation:

No. of people going to beach = 46 .

Using Unitary Method ,

9 people can go in one van .

1 person can go in 1/9

46 people can go in 1/9 * 46 = 5.1

Since vans can't be in fraction , 1 extra van for 1 person is need that is for 46th person .

So total number of vans = 5 + 1 = 6

If the corners of the kitchen are (8, 4), (−3, 4), (8, −8), and (−3, −8), the area of the kitchen is 132 square feet. So, the correct option is C.

To find the area of the rectangular kitchen, we need to use the formula for the area of a rectangle, which is A = L x W, where A is the area, L is the length, and W is the width.

From the given ordered pairs, we can determine the length and width of the rectangle. The length is the distance between the points (8,4) and (-3,4), which is 8 - (-3) = 11 feet. The width is the distance between the points (8,4) and (8,-8), which is 4 - (-8) = 12 feet.

Now that we know the length and width, we can find the area by multiplying them together:

A = L x W = 11 x 12 = 132 square feet

Therefore, the correct answer is C.

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Answer    C. 132 fT2  

Step-by-step explanation:

The desired sample size, according to Cochran's formula, is approximately 1067 respondents.

To determine the desired sample size using Cochran's formula, we need to know the population size (N) and the desired margin of error (E). Cochran's formula is given by:

n = (Z² * p * q) / E²

Where:

n = desired sample size

Z = Z-score corresponding to the desired confidence level (99% in this case)

p = estimated proportion of the population with a certain characteristic (we will assume 0.5 for a conservative estimate)

q = 1 - p (complement of p)

E = desired margin of error (0.03 or 3% in this case)

Since the population size is not provided in the question, we will assume a large population where the sample size does not affect the population proportion significantly. In such cases, a sample size of around 1000 is generally sufficient to ensure accuracy.

Using the provided information and assumptions, we can calculate the desired sample size:

n = (Z² * p * q) / E²

n = (2.58² * 0.5 * 0.5) / 0.03²

n ≈ 1067

Therefore, the desired sample size, according to Cochran's formula, is approximately 1067 respondents.

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In the problem,

the given system of linear equations are 10x1 - 7x2 = 7 ...

(i)-3x1 +2.099x2 + 3x3 = 3.901 ...

(ii)5x1 - x2 +5x3 = 6 ...

(iii)Now, the solution of the system of equation using Gauss elimination with partial pivoting with five significant digits with chopping leads to the following solution:

x1 = 1.8975, x2 = 1.6677, x3 = 2.00088So, option (d) x1 = 1.8975, x2 = 1.6677, x3 = 2.00088 is the correct answer. Therefore, option (d) is the right option.

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the answer is $1899.81

After pumping all of container A into container B there will remain empty space in B = 78.5 ft³

The percentage for this empty space is of the entire volume is = 3.4 %

What is volume of cylinder?

Volume of cylinder is calculated as;

v = π r² h  

Since, Container A has a diameter of 18 feet and a height of 9 feet.

Then, Radius = 18/2 = 9 ft

Hence, Volume of Container A = π r² h  

                                                = 3.1416 * 9 * 9 * 9

                                                = 2,290.22 ft³

Since,  Container B has a diameter of 16 feet and a height of 11 feet.

Then, Radius = 16/2 = 8 ft

Hence, Volume of Container B = π r² h

                                               = 3.1416 * 8 * 8 * 11

                                               = 2,211.68 ft³

After pumping all of container A into container B there will remain empty space in B = 2,290.22 - 2,211.68 = 78.5 ft³

And, The percentage for this empty space is of the entire volume is,

78.5/2,290.22 = 0.03427 *100 = 3.4 %

So, After pumping all of container A into container B there will remain empty space in B = 78.5 ft³

The percentage for this empty space is of the entire volume is = 3.4 %

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Answer:

1) the signs of the numbers is not in standard form

2) always make sure that the signs of the two equations is standarised and then solve

please follow me

If we take the adjacent side AD and DC  and work out their slopes we get  

AD = (6-4)/(2-0)  = 1 and DC has slope (6-4)/(2-4)  = -1 . This shows that the angle between the 2 lines is 90 degrees so it looks like  this is a square. If you include the slopes  of each adjacent line they are at right angles too.  Now to prove its a square  each line must be of equal length and you'll find this is the case too.

Answer:

length = 4 feet

width = 4 feet

height = 10 feet

Step-by-step explanation:

8x4x5 = 160

4x4x10 = 160

Answer:

length = 4 feet

width = 4 feet

height = 10 feet

Step-by-step explanation:

First we must find the volume of prism A

Assuming that the prism is a rectangular prism we can easily calculate the volume by multiplying the length by the width by the height

So V = 8 * 4 * 5

8 * 4 = 32

32 * 5 = 160

Hence, the volume of prism a is 160ft²

The question states that the volume of prism A is  the same as the volume of prism B. Given that information we want to find the possible dimensions of prism B such that volume of prism A = volume of prism B.

We can do this by find the volume of each answer choice ( again, assuming that their rectangular prism )

For the first answer choice

4 * 4 * 10 = 160

160 = 160 however lets check the other answer choices.

For the second answer choice:

5 * 4 * 7 = 140

140≠160 therefore the second answer choice is not correct

For the third answer choice

8 * 4 * 6 = 192

192 ≠ 160 therefore the third answer choice is not correct

For the fourth answer choice

I can't see the dimensions, however we already know that the answer is the first answer choice.

Step-by-step explanation:

$0.30 because they only sell 30 cents less/more than each other

Testing the hypothesis, it is found that since the p-value of the test is of 0.0143 > 0.01, there is not enough evidence to conclude that more than 75% of the customers wait less than ten minutes  in the queue at the bank.

At the null hypothesis, it is tested if at most 75% of the customers wait less than ten minutes  in the queue at the bank, that is:

\(H_0: p \leq 0.75\)

At the alternative hypothesis, it is tested if the proportion is of more than 75%, that is:

\(H_1: p > 0.75\)

The test statistic is given by:

\(z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}\)

In which:

For this problem, the parameters are: \(p = 0.75, n = 90, \overline{p} = 1 - 0.15 = 0.85\)

Hence, the value of the test statistic is:

\(z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}\)

\(z = \frac{0.85 - 0.75}{\sqrt{\frac{0.75(0.25)}{90}}}\)

\(z = 2.19\)

The p-value of the test is the probability of finding a sample proportion above 0.85, which is 1 subtracted by the p-value of z = 2.19.

Looking at the z-table, z = 2.19 has a p-value of 0.9857.

1 - 0.9857 = 0.0143.

Since the p-value of the test is of 0.0143 > 0.01, there is not enough evidence to conclude that more than 75% of the customers wait less than ten minutes  in the queue at the bank.

A similar problem is given at https://brainly.com/question/25600813

Step-by-step explanation:

Combine like terms: 0 + -22 = -22

-6n = -22

Divide each side by '-6'.

n = 3.666666667

Simplifying

n = 3.666666667

Answer:

C) 2297.5

Step-by-step explanation:

8.5 times 160 is 1360

1/32 of 30,000 is 937.5

1360 + 937.5 is 2297.5

Answer:

It's B

"Yes, the constant of proportionality is 2."

Step-by-step explanation:

The time or X shows the same numbers shown in distance or Y

it's just Time x2 for distance

Answer:

Step-by-step explanation:

You want the remainder of a number when divided by 3 if (1) the sum of digits is 5, and (2) the remainder from division by 9 is 5.

The sum of digits of a 2-digit number will be 5 if that number is one of ...

  {14, 23, 32, 41, 50}

In every case, the remainder when divided by 3 is 2. Effectively, it is the remainder of 5 when that is divided by 2.

In addition to the numbers listed above, 2-digit numbers with a sum of digits of 14 will also have a remainder of 5 when divided by 9. This adds five more numbers to the list:

  {59, 68, 77, 86, 95} . . . . have remainders of 5 when divided by 9

The remainders when divided by 3 are all 2 for these numbers as well.

__

Additional comment

The process of (recursively) summing the digits of a positive integer is called "casting out 9s". It effectively finds the modulo 9 value of the number, with the exception that a sum of 9 corresponds to a modulo 9 value of 0.

Since 9 is divisible by 3, the modulo 3 value of a number will be the modulo 3 value of the modulo 9 value. In other words, if the sum of digits is 5, or the remainder from division by 9 is 5, then the mod 3 value is 5 mod 3 = 2.

A graph of each of the exponential equation is shown in the image attached below.

In Mathematics, an exponential function can be modeled by using this mathematical expression:

f(x) = ab^x

Where:

Since Amber shared her photo with 3 people who continued to share it, an exponential function that models the situation is given by:

f(x) = 3(4)^x

Similarly, Ben's post was shared with 2 friends and each of them shared it with 3 more every day, tripling the number of shares every day, an exponential function that models the situation is given by:

g(x) = 2(3)^x

Lastly, an exponential function that represents the spread of Carter's social media post is given by:

h(x) = 10(2)^x

In this scenario, we would use an online graphing calculator to graph each function as shown in the image attached below.

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They continued to share it, so the number of shares increases every day, as shown by the function.

Social Media Post Shares f(x) = 3(4)x

Day Number of Shares

0 2

1 6

2 18 Carter shared his post with 10 friends, who each share with only 2 people each day.

Answer:

Most likely yes... there is a problem in the way you asked your question ...

if the question is   \(y = ( \frac{-4}{5}) x\) then the answer is yes and the constant is -4/5's

If by some chance the actual question is   \(y = \frac{-4}{(5x)}\) (you can not tell by the way y0u presented tis problem.. then the answer would be NO it would be "inverse" relation

Step-by-step explanation:

Answer:

Step-by-step explanation:

Siny= 4xy +x²

dy/dx(cos y) =4y+ 4x(dy/dx)+2x

making dy/dx the subject

dy/dx(cos y)-4x(dy/dx)=4y+2x

dy/dx(cos y -4x)=4y+2x

dy/dx=(4y+2x)/(cos y -4x)

the given transformation is not onto or Option D.The given transformation is one-to-one, but not onto.

To find if the given linear transformation is one-to-one, we check if the columns of the standard matrix, A are linearly independent or not. If the columns of A are linearly independent, then T is one-to-one. Otherwise, it is not. A transformation is one-to-one if and only if the columns of the standard matrix A are linearly independent.

The determinant of A is -41, which is non-zero. So the columns of the standard matrix, A are linearly independent. Therefore, the given transformation is one-to-one.Answer: Option C.(b) Is the linear transformation onto?

To find if the given linear transformation is onto, we check if the standard matrix A has a pivot position in every row or not. If A has a pivot position in every row, then T is onto.

Otherwise, it is not.The rank of A is 2. It has pivot positions in the first two rows and no pivot position in the last row.

Therefore, the given transformation is not onto. Option D.Explanation: The given transformation is one-to-one, but not onto.

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Zeros:

x = -2

x = 6

Smaller zero: -2

Hey I dont know that answer but if you download Gaumath and take a picture of the problem the tutors on there will help you for free

y=ax^4 + bx^3 + cx^2 + dx + e

Since a< 0 we know that it has to go to - infinity for x going to - infinity and x going to + infinity. That rules out choices B and C.

The maximum number of turning points a polynomial can have is n-1 where n is the degree of the polynomial

(turning points is change of direction)

The graph D has 5 turning points and the degree of the polynomial is 4 so it is not possible

A is your solution.