the value of y varies directly with x. which function represents the relationship between x and y if y=6 and x-9?

Answer:   5x + 2y = 19

x + 4y = 13

Step-by-step explanation:

let x be the cost of each five-pound bag of candy, and y be the cost of each one-pound bag of candy.

5x + 2y = 19

x + 4y = 13

Answer:

1 / 2 or 0.5

Step-by-step explanation:

use the formula ; m = y2 - y1 / x2 - x1

where y2 = 10

y1 = 9

x2 = 5

x1 = 3

1.  [1  2  3]   [x1]   [2]

 [0  1 -1]   [x2] = [8]

 [1  2  1]   [x3]   [4]

2. x3 equals to -11/3.

To solve for x3 using Cramer's rule, we need to find the determinant of the coefficient matrix and then form three additional matrices by replacing the third column of the coefficient matrix with the constants vector. The determinant of the coefficient matrix is:

| 1  2  3 |

| 0  1 -1 |

| 1  2  1 | = 1(1-4)-2(3-1)+3(2-2) = -3

Next, we form three matrices by replacing the third column of the coefficient matrix with the constants vector:

 [1  2  2]   [2]

 [0  1  8] = [8]

 [1  2  4]   [4]

 [1  2  3]   [2]

 [0  1 -1] = [8]

 [1  2  1]   [4]

 [1  2  3]   [2]

 [0  1 -1]   [8]

 [1  2  4]   [4]

The determinants of these matrices are:

| 1  2  2 |    | 1  2  3 |    | 1  2  3 |

| 0  1  8 | = -4| 0  1 -1 | = -3| 0  1 -1 | = 11

| 1  2  4 |    | 1  2  1 |    | 1  2  4 |

Therefore, x3 can be calculated as:

x3 = Det(B)/Det(A) = 11/-3 = -11/3

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Answer: 1/6

Step-by-step explanation:

Note that the depreciation for this vehicle using method 2 will be $340.

To calculate the depreciation using method 2, we need to multiply the cost of the car by the depreciation rate per mile, which is given in cents per mile.

First, we need to calculate the total depreciation for the car in cents by multiplying the miles driven by the depreciation rate per mile:

Total depreciation = Miles driven x Depreciation rate per mile

Total depreciation = 10,000 x 3.4 cents per mile

Total depreciation = 34,000 cents

Next, we need to convert the total depreciation from cents to dollars by dividing it by 100:

Total depreciation = 34,000 cents ÷ 100 cents/dollar

Total depreciation = $340

Therefore, the depreciation for this vehicle using method 2 will be $340.

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Answer:

0.08

Step-by-step explanation:

4/25^1/2 = 0.08

The level of confidence for the given confidence interval is 95% and z-score is 1.96.The calculation involves using the formula for the confidence interval and the given sample proportion and size.

We can use the formula for the confidence interval for a population proportion:

p-hat ± z*(sqrt(p-hat*(1-p-hat)/n))

Where p-hat is the sample proportion, z is the z-score for the desired level of confidence, and n is the sample size.

We're given that p-hat = 0.3 and n = 50. We're also given that the confidence interval is (.1323, .4677), which means that:

p-hat ± z*(sqrt(p-hat*(1-p-hat)/n)) = (.1323, .4677)

We can use the midpoint of the confidence interval as the point estimate for p-hat, which is (0.1323 + 0.4677) / 2 = 0.3.

Substituting the values we have into the equation, we get:

0.3 ± z*(sqrt(0.3*(1-0.3)/50)) = (.1323, .4677)

Simplifying the equation, we get:

z = 1.96

Therefore, the level of confidence for this interval is 95%, since the z-score for a 95% confidence level is 1.96.

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No, this procedure does not result in a binomial distribution because the outcome of each roll is not a success or failure, but rather a specific number from 1 to 6.

In a binomial distribution, there are only two possible outcomes (usually denoted as success or failure) for each trial.
Based on the information provided, the given procedure does not result in a binomial distribution. A binomial distribution has specific requirements, which are:
1. Fixed number of trials (n).
2. Only two possible outcomes (success or failure) in each trial.
3. The probability of success (p) remains constant in each trial.
4. Trials are independent of each other.
In the given procedure, while there is a fixed number of trials (26), there are six possible outcomes (1, 2, 3, 4, 5, and 6) instead of only two. This violates the second requirement of a binomial distribution.

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Answer:

X = 9

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer:

L = 5u

Step-by-step explanation:

area = 8 × L

L = area ÷ 8

40 ÷ 8 = 5

L = 5u

Answer:

L = 5u

hope it help

Answer:

Her mistake was in the slope for segment AR, (3 - (-1)/(3 -1) = 4/2 ≠ 3/2

Step-by-step explanation:

The steps for obtaining the slope is given as follows;

\(Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}\)

Where;

(x₁, y₁) and (x₂, y₂) are the coordinates of the endpoints of the line

The coordinates of the vertices are;

A(3, 3), R(1, -1), and C(-2, 1)

Slope of AR = (3 - (-1))/(3 - 1) = (3 + 1)/(3 - 1) = 4/2 = 2

The slope of RC = (-1 - 1)/(1 - (-2)) = -2/(1 + 2) = -2/3

The slope of AC = (3 - 1)/(3 - (-2)) = 2/(3 + 2) = 2/5

Therefore, her mistake was the value of the double negation in the numerator when finding the slope of AR is 4 rather than 3

Answer:

the mistake in the slope is , (3 - (-1)/(3 -1) = 4/2 ≠ 3/2

Step-by-step explanation:

Answer:

0.1

Step-by-step explanation:

1. Convert percents to decimals.

0.04, 0.5

2. Solve.

(0.04)(0.5)5

0.1

Answer:

0.1

Step-by-step explanation: Solve from right to left using multiplication.

50% = 1/2

5 x 1/2 = 2.5

4% = 0.04

2.5 x 0.04 = 0.1 :)

Answer:

Third graph  does not represent a function.

Step-by-step explanation:

A function is a relation in which each element of the domain corresponds with exactly one element of the range. You could use the vertical line test to verify whether a given graph represents a function.  The vertical-line test states if a vertical line passes through more than one point on the graph of a relation, then the relation is not a function. A relation is a set of pairs of input (x values) and output (y values).

Looking at the third graph and conducting the vertical line test, you'll see that the vertical line will pass through more than one point on the graph of a relation.  

Below is a screen capture of the vertical line test I've done using the image you've provided. You'll see that given an x-value of 3, it has two corresponding y-values: 4 and -4.

The correct answer is d) To avoid a large number of classes with very small frequencies.

Unequal class intervals are sometimes used in a frequency distribution to avoid a large number of classes with very small frequencies. This can occur when the data range is very large or when there is a lot of variability in the data.

For example, if we have a dataset with values ranging from 0 to 1000, using equal class intervals of size 100 would result in 10 classes. However, if the data is skewed and most of the values fall in the lower range, many of the classes may have very small frequencies. Using unequal class intervals can help group the data in a way that results in more meaningful class frequencies.

Additionally, unequal class intervals can be used to better represent the distribution of the data. For example, if there is a cluster of values around a certain range, using a smaller class interval around that range can provide more detail and information about the data distribution.

Therefore, the correct answer is d) To avoid a large number of classes with very small frequencies.

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Answer:

Ethan will use 49

fl oz of orange juice, and he will have a total of 77

fl oz of punch.

Step-by-step explanation:

He uses a ratio of 7 to 4 of orange juice to sparkling water.

7/4 = ?/28

4 * ? = 7 * 28

Divide both sides by 4.

? = 7 * 7

? = 49

He will use 49 fl oz of orange juice.

The total amount made is: 49 fl oz + 28 fl oz = 77 fl oz

Answer:

Ethan will use 49

fl oz of orange juice, and he will have a total of 77

fl oz of punch.

To find the area of the tile, we need to first find the length of the top horizontal side.

Using the Pythagorean theorem, we can find the length of the diagonal:

d² = 3² + (5+6)²

d² = 9 + 121

d = √130

Now we can use the fact that the diagonal cuts the rectangle into two right triangles to find the length of the top horizontal side:

5x = 3(6)

x = 18/5

Therefore, the length of the top horizontal side is 18/5 centimeters.

Now we can find the area of the tile:

A = (3 + 18/5) * 5/2

A = 15 + 27/5

A = 102/5

Rounding to one decimal place, we get:

A ≈ 20.4 cm²

Therefore, the closest option to the area of the tile shown is 42.5 cm².

the answer is A. it is asking for the incorrect answer therefor all are correct except A.

Answer:

A got it right

Step-by-step explanation:

Answer:

x = -8

Step-by-step explanation:

Step 1: Write out equation

-3 = x + 5

Step 2: Subtract both sides by 5

-3 - 5 = x + 5 - 5

-8 = x

Step 3: Rewrite

x = -8

Step 4: Check

-3 = -8 + 5

-3 = -3

Answer:

-8

Step-by-step explanation:

-3 - 5 = -8

-8 + 5 = -3

hope this helps

plz mark brainlesit

Answer:

26.77 mph

Step-by-step explanation:

Formula for Avg. Speed = Distance/Time

80.31/3 = 26.77

Answer:

26.77 miles per hour

Step-by-step explanation:

Distance ÷Time

80.31 miles ÷3hrs

= 26.77 miles per hour

Step-By-Step:

The height triangle has a height of 17.3 yards and a width of 12 yards. 3. Finally, connect the two triangles to create the pyramid's surface area. The surface area of the pyramid is 116.7 yards².

Answer:

116.7 yards².

Answer:

The first step is to find the area of the base triangle:

Area = (1/2) x base x height

Area = (1/2) x 20 yards x 17.3 yards

Area = 173 square yards

To find the surface area of the pyramid, we need to find the areas of the four triangular faces and add them to the base area.

Area of a triangular face = (1/2) x base x height

Area of each face = (1/2) x 20 yards x 12 yards

Area of each face = 120 square yards

Now we can add up all the areas:

Surface area = base area + area of four faces

Surface area = 173 square yards + 4 x 120 square yards

Surface area = 653 square yards

Therefore, the surface area of the pyramid is 653 square yards.

Answer:

i think a. srry if im wrong,

Step-by-step explanation:

have a nice day:)

The temperature at 7:00 am is -19.3°C.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Midnight temperature = -13°C

The temperature drops each hour = 0.9°C

The number of hours from midnight to 7:00 am.

= 7 hours.

Now,

The temperature at 7:00 am.

= -13 - 7 x (0.9)

= -13 - 6.3

= -19.3°C.

Thus,

-19.3°C is the temperature at 7:00 am.

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The answer is A. Network redundancy. During an audit of an existing wireless system, network redundancy does not have to be specifically checked.

Network redundancy refers to the existence of backup systems or paths to ensure uninterrupted connectivity in case of failures. While network redundancy is an important consideration in designing and maintaining a reliable wireless network, it is not typically part of the audit process.

On the other hand, the condition of the wireless system and the transmitter output are important aspects that need to be checked during an audit. The condition involves assessing the physical state of the equipment, such as antennas, cables, and access points, to ensure they are functioning properly. The transmitter output refers to the signal strength and quality being emitted by the transmitters, which is a crucial factor in assessing the performance of the wireless system.

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Answer:

178 text messages

Step-by-step explanation:

You have do 7.05 times 3 and you get 21.15. Then you do 26.70 minus 21.15 and you get 5.55. Then you do 7.05 divided by 47 then you get 0.15.  SO each messages is 0.15 cents so you do 0.15 times 37 and you get 5.55 and then you add 21.15 and 5.55 and you get 26.70. Then you take 141 and add it to 37 and you get 178 as your answer          

The value Newton's interpolating polynomial P 2(x) of f(x) of f[x0, x1] is -4.

In Newton's interpolating polynomial, the coefficients of the linear terms (x) correspond to divided differences. The divided difference f[x0, x1] represents the difference between the function values f(x0) and f(x1) divided by the difference between x0 and x1.

Since we are given P2(x) = \(x^2 + x + 2\), we can substitute the given x-values into P2(x) to find the corresponding function values.

For x0 = -3, substituting into P2(x) gives f(-3) = \((-3)^2 + (-3) + 2 = 12\).

For x1 = 1, substituting into P2(x) gives f(1) = \((1)^2 + (1) + 2 = 4\).

To calculate f[x0, x1], we need to find the divided difference between these two function values: f[x0, x1] = (f(x1) - f(x0)) / (x1 - x0) = (4 - 12) / (1 - (-3)) = -8 / 4 = -2.

Therefore, f[x0, x1] = -2, and the correct answer choice is b. -4.

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