Use the image to answer the question. A coordinate plane with four quadrants shows the x- and y-axes ranging from negative 5 to 5 in increments of 1. A solid line and a dotted line intersect each other. The equation of the solid line is x minus 5 y equals 3. The equation of the dotted line is 3 x minus 2 y equals negative 4. The intersection of both lines is shown at negative 2 on the x-axis and negative 1 on the y-axis in quadrant 3.

Review the graphs of a system of two linear equations in two variables: x−5y=7 and 3x−2y=−4. Find the solution to both equations.(1 point)
The intersection point is ()

Answer:

A. is correct

Step-by-step explanation:

20 + 16 = 36 obviously

The likelihood that sample results will generalize to the population is indeed influenced by the representativeness of the sample. When a sample is representative, it accurately reflects the characteristics of the population it was drawn from. Here's a step-by-step explanation:

1. To ensure representativeness, the sample should be selected in a way that every member of the population has an equal chance of being included. This helps to minimize bias and increase the generalizability of the findings.

2. A representative sample is important because it allows us to make valid inferences about the larger population based on the characteristics observed in the sample. If the sample is not representative, the findings may not accurately reflect the population, leading to biased or misleading conclusions.

3. By having a representative sample, we can have more confidence in the generalizability of our results. This means that the findings from the sample are likely to hold true for the entire population.

4. On the other hand, if the sample is not representative, the findings may only be applicable to the specific sample and cannot be confidently extended to the larger population.

In summary, the representativeness of the sample plays a crucial role in determining the extent to which sample results can be generalized to the population. A representative sample ensures that the findings are more likely to be applicable to the entire population and helps to avoid biased or misleading conclusions.

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Answer:

45 & 47

Step-by-step explanation:

Forming the equation,

→ x + (x + 2) = 92

→ 2x + 2 = 92

Now the value of x will be,

→ 2x + 2 = 92

→ 2x = 92 - 2

→ x = 90/2

→ [ x = 45 ]

Then the required integers are,

→ x = 45

→ x + 2 = 45 + 2 = 47

Hence, the integers are 45, 47.

Answer:

6.15

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

let the no of people who share the meal be x

each member paid $17

total cost of meal=$51

so ur equation is

$17x=$51

x=$51/$17(here $ and $ also gets cancel)

x=3

therefore three menber shared the meal.

Note:when  in multiplication when u transfers the number to other side it changes into mltiplication.For example

$17=$51

here $17 is multiplied with x and when we bring $17 to right hand side it divides $51.

Answer:

\(17x = 51 \\ \frac{17x}{17} = \frac{51}{17} \\ x = 3\)

Step-by-step explanation:

The error was that the learner subtracted both sides instead of dividing both sides. The student was supposed to divide both sides by 17 to get the answer.

Given the expression:

using the distributive property we get the following:

therefore, the simplified expression is 0

For n = 3, x = 9, and x = 2i, we can say that one of the factors is (x - 9) as well as (x - 2i).

(x - 2i) is derived from x² = -4 which is equal to (x² + 4). Therefore, the two factors are (x - 9) and (x² + 4). To get the polynomial function, let's multiply the two factors using FOIL Method.

The polynomial function of the first bullet is f(x) = x³ - 9x² + 4x - 36.

For n = 3, x = -1, and x = 4 + i, we can say that the factors are:

(x + 1) , (x - (4 + i)), and (x - (4 - i))

Note: Always remember those complex zeros like x = 4 + i come in conjugate pairs.

To solve the polynomial function, let's multiply the three factors.

The polynomial function of the second bullet is f(x) = x³ - 7x² + 9x + 17.

It is worth noting that there are many other possible choices for a and b that satisfy ab=0. This is because there are many ways to construct matrices with a row or column of zeros, and many ways to choose the nonzero entries in the other positions.

To find nonzero 2x2 matrices a and b such that ab=0, we need to find matrices a and b whose product is the zero matrix. A matrix multiplication is a combination of dot products between rows and columns of the two matrices. In order for the product of two matrices to be zero, one or both of the matrices must have a row of zeros or a column of zeros.

One way to construct such matrices is to set one of the matrices to have a row of zeros and the other to have a column of zeros. Let a be a matrix with a row of zeros and b be a matrix with a column of zeros, but with a nonzero entry in a different position. For example, we could choose:

a = [0 0; 1 0]

b = [0 1; 0 0]

Then, the product ab is:

ab = [0 0; 1 0] * [0 1; 0 0] = [0 0; 0 0]

So, we have found two nonzero 2x2 matrices a and b such that ab=0.

It is worth noting that there are many other possible choices for a and b that satisfy ab=0. This is because there are many ways to construct matrices with a row or column of zeros, and many ways to choose the nonzero entries in the other positions.

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Answer: 20x  + 20

Step-by-step explanation:

    We will distribute the four into the expressions to expand, then we will simplify.

   Given:

4(2x + 3) + 4(3x + 2)

   Distribute:

8x + 12 + 12x + 8

   Combine like terms with addition:

20x + 20

                   20x  + 20

Answer:

p < -2

Step-by-step explanation:

Answer:

The answer is -2

Step-by-step explanation:

4/5-1/2p>9/5

C.L.T

-1/2p>9/5-4/5

-1/2p>5/5

-1/2p=1

-p/2>1

-p=2

p= -2

We use the distributive property.

Multiply the outer term 2 by each term inside ('a' and b)

2 times a = 2a

2 times b = 2b

We add those results to get 2a+2b. We cannot combine these terms as they are not like terms.

True. Hexadecimal numbers are written using the base 16 number system, where digits range from 0 to 9 and A to F. They are commonly used in computer systems for concise representation and easy conversion to binary.

In the hexadecimal number system, there are 16 symbols used to represent values, namely 0-9 and A-F. Each digit in a hexadecimal number represents a multiple of a power of 16.

The symbols 0-9 represent the values 0-9, respectively. The symbols A-F represent the values 10-15, respectively, where A represents 10, B represents 11, C represents 12, D represents 13, E represents 14, and F represents 15.

For example, the hexadecimal number "3F" represents the value (3 * 16^1) + (15 * 16^0) = 48 + 15 = 63 in decimal.

Similarly, the hexadecimal number "AB8" represents the value (10 * 16^2) + (11 * 16^1) + (8 * 16^0) = 2560 + 176 + 8 = 2744 in decimal.

Hexadecimal numbers are commonly used in computer systems, as they provide a convenient way to represent large binary numbers concisely. Each hexadecimal digit corresponds to a four-bit binary number, allowing for easy conversion between binary and hexadecimal representations.

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Answer:

160 packages in 4 minutes

Step-by-step explanation:

If this helped please mark brainliest

The waiting time for patients admitted for additional treatment is more variable than the waiting time for patients who are discharged after receiving treatment.

To determine which waiting time is more variable, we need to compare the standard deviation of the two groups. The standard deviation measures the amount of variability or dispersion of a set of data.

A larger standard deviation indicates that the data is more spread out, while a smaller standard deviation indicates that the data is more tightly clustered.

In this case, the standard deviation for patients admitted for additional treatment is 15.1 minutes, while the standard deviation for patients discharged after receiving treatment is 11.4 minutes.

Since 15.1 is larger than 11.4, this indicates that the waiting time for patients admitted for additional treatment is more variable than the waiting time for patients who are discharged after receiving treatment.

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The divergence of the vector field F(x, y, z) = (5x^2 + 7 - sin(xz))i + 0j + (5x^2 + 7 - sin(xz))k is 20x - 2zcos(xz).

To find the divergence of the vector field F(x, y, z) = (5x^2 + 7 - sin(xz))i + 0j + (5x^2 + 7 - sin(xz))k, you need to take the divergence operator (∇ · F).

The divergence of a vector field in Cartesian coordinates is given by the following formula:

∇ · F = (∂Fx/∂x) + (∂Fy/∂y) + (∂Fz/∂z),

where Fx, Fy, and Fz are the x, y, and z components of the vector field F, respectively.

In this case, we have:

Fx = (5x^2 + 7 - sin(xz)),

Fy = 0, and

Fz = (5x^2 + 7 - sin(xz)).

Taking the partial derivatives, we get:

∂Fx/∂x = 10x - zcos(xz),

∂Fy/∂y = 0, and

∂Fz/∂z = 10x - zcos(xz).

Now, substituting these derivatives into the divergence formula, we have:

∇ · F = (10x - zcos(xz)) + 0 + (10x - zcos(xz)).

Simplifying further, we get:

∇ · F = 20x - 2zcos(xz).

Therefore, the divergence of the vector field F(x, y, z) = (5x^2 + 7 - sin(xz))i + 0j + (5x^2 + 7 - sin(xz))k is 20x - 2zcos(xz).

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Answer:

Im pretty sure it's two and twenty six thousandths

Answer:

Two and twenty six tenths

Answer:

15cm by 20cm by 25cm

Step-by-step explanation:

Let the sides of the right angle be x, y and h

x is the breadth

y is the height

h is the hypotenuse

Perimeter = x + y + h

x + y +h  = 60

x+y = 60-h .... 1

If its area is equal to 150 square cm, then;

Area = 1/2 * base * height

Area = 1/2 *x * y

xy/2 = 150

xy = 300 ....2

According to pythagoras theorem;

x² + y² = h²

On expanding x² + y²

x² + y² = (x+y)² - 2xy

The equation becomes

(x+y)² - 2xy = h² ... 3

Substitute equation 1 and 2 into 3;

From 3;

(x+y)² - 2xy = h² ... 3

(60-h)² - 2(300) = h²

3600-120h + h² - 600 = h²

3600-120h - 600 = 0

-120h = 600-3600

-120h = -3000

h = 3000/120

h = 25cm

Recall that x+y+h = 60

x+y+25 = 60

x+y = 60 - 25

x+y = 35 ... 4

From equation 2;

xy = 300

x = 300/y ..... 5

Substitute 5 into 4;

300/y + y = 35

(300+y²)/y = 35

300+y² = 35y

y²-35y + 300 = 0

y²-20y-15y + 300 = 0

y(y-20)-15(y-20) = 0

y-20 = 0 and y - 15 =0

y = 20 and 15

since x+y = 35

x + 20 = 35

x = 35 - 20

x = 15

Hence the sides of the triangle are 15cm by 20cm by 25cm

Answer:

You could solve this by taking the y value and adding it to the multiplied rate.

For example: For Jill's 6 year mark, the equation would be 11(6) + 15.

Hope this makes sense, don't hesitate to ask for clarification on a certain part of the answer.

Chunking is a good way to introduce your child to some of the more basic concepts of division, and once they have come to terms with this they can then move onto the short method of division.

Now, According to the teaching Ideas:

We have four basic arithmetic operations i.e., addition, subtraction, multiplication, and division. Amongst these four operations, the division is one of the major operations we use in our daily activities. It is the process of splitting a large group into equal smaller groups. For example, divide 25 by 5. Division fact for this example will be, 25 ÷ 5 = 5.

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Answer:

A . or C. is probley your best bet if not I'm sorry

The radius of convergence, R, of the series ∑[infinity]n=1 xn8n-1 is 1/8. The interval of convergence, I, is (-1/8, 1/8) or (-1/8 ≤ x ≤ 1/8).

To find the radius of convergence, we can use the ratio test. Let's apply the ratio test to the given series:

lim |xn+1 × 8n / (xn × 8n-1)| as n approaches infinity.

Simplifying the expression, we get:

lim |x × 8n / 8n-1| as n approaches infinity.

Since the absolute value of x does not affect the limit, we can simplify further:

lim |8x| as n approaches infinity.

For the series to converge, the limit must be less than 1. Therefore, we have:  |8x| < 1.

Solving for x, we find:   -1/8 < x < 1/8.

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Answer: 6/7

Step-by-step explanation:

Hope this helps

Answer:

  A.  The temperatures of the iron bars after 30 minutes would be less than 160°C because heat would be lost to the surroundings.

Step-by-step explanation:

The hotter bar would lose heat to both the cooler bar and the surroundings. The cooler bar would gain heat from the hotter bar, but lose heat to the surroundings. Because heat is lost to the surroundings, the temperature of the iron will be less at the same time (after 30 minutes) than it would be in an isolated system.

Answer:

y = -5/2x +4

Step-by-step explanation:

First, make the equation into standard form.

5x + 2y = -10

2y = -5x - 10

y = -2.5x - 5

In order for two lines to be parallel, they must have the same slope. (In y = mx + b, "m" is the slope)

The slope in y = -2.5x - 5 is -2.5, so we need to find an equation with a slope of -2.5 (or -5/2)

In y = -2/5x - 8, the slope is -2/5

In y = 2/5x + 7, the slope is 2/5

In y = 5/2x - 6, the slope is 5/2

In y = -5/2x +4, the slope is -5/2.  

Thus, y = -5/2x +4 is the right answer

Answer:

Step-by-step explanation:

The perimeter of a triangle is the sum of the lengths of its sides. Therefore, to find the perimeter of the triangle with sides a = 24, b = 45, and c = ?, we need to add up the lengths of the known sides:

Perimeter = a + b + c

Plugging in the values, we get:

Perimeter = 24 + 45 + c

Simplifying, we get:

Perimeter = 69 + c

We still need to find the length of the third side, c. However, we can use the fact that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. In other words:

a + b > c

24 + 45 > c

69 > c

Therefore, we know that c must be less than 69.

On the other hand, we can also use the fact that the difference between the lengths of any two sides of a triangle must be less than the length of the third side. In other words:

|a - b| < c

|24 - 45| < c

21 < c

Therefore, we know that c must be greater than 21.

Putting these two inequalities together, we have:

21 < c < 69

So the perimeter is:

Perimeter = 69 + c

And we know that:

21 < c < 69

Therefore, we can say that the perimeter is somewhere between:

69 + 21 = 90

and

69 + 69 = 138

Rounding to the nearest tenth, we get:

Perimeter ≈ 90.0 - 138.0

Therefore, the perimeter is somewhere between 90.0 and 138.0, depending on the actual length of the third side, c.

The total distance in meters the swimmer swims is 995 meters.

Based on the provided information, the diving watch records the location of the swimmer each time the swimmer turns around and after swimming for one hour, the watch shows the values which are measures in meters: 145, -260, 190, -300, 100.

In order to determine the total distance that the swimmer swam in an hour, the values shown on the watch are added. In case of negative values, the negative sign indicates the opposite direction, hence the negative sign is ignored when adding the values.

The total distance = 145 + 260 + 190 + 300 + 100 = 995 meters

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We are required to calculate how many minutes does it take Autumn to walk to work now

The number of minutes does it take Autumn to walk to work now is 25.35 minutes

Time taken to walk to work = 39 minutes

Percentage decrease = 35%

Decrease in time = 35% of 39 minutes

= 35/100 × 39 minutes

= 0.35 × 39 minutes

= 13.65 minutes

Number of minutes does it take Autumn to walk to work now

= 39 minutes - 13.65 minutes

= 25.35 minutes

Therefore, the number of minutes does it take Autumn to walk to work now is 25.35 minutes

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