PLEASE HELP!I have to turn this into my teacher in 10 minutes 1. Solve the system of equations, y = x – 3 and y = –2x + 6, using the 2. Use the linear combination method to solve the system of equations. –x + 5y = 18 x + 4y = 9 3. Solve this system of equations 3x + 5y = −72 and 2x + 3y = –45 using the linear combination method.

Answer:

c

Step-by-step explanation:

y = \(\frac{5}{2}\) x + 2 → (1)

2y = 5x + 4 ( divide through by 2 )

y = \(\frac{5}{2}\) x + 2 → (2)

the 2 equations are the same and will have infinitely many solutions

The distance between the point where the stick touches the rim and the ground is √(dL - L^2) inches.

A bicycle wheel has a diameter of d inches. A stick of length L inches is placed along the rim of the wheel such that it is tangent to the rim and also touches the ground. What is the distance between the point where the stick touches the rim and the ground?

Let O be the center of the wheel, A be the point where the stick touches the rim, and B be the point where the stick touches the ground. Then, OA is the radius of the wheel, which is d/2 inches, and AB is the distance we want to find.

Since OA is perpendicular to AB, we can use the Pythagorean theorem to find AB:

AB^2 = OA^2 - OB^2

OB is the length of the part of the stick that touches the ground, which is L - OA inches. Substituting the values we know, we get:

AB^2 = (d/2)^2 - (L - d/2)^2

Simplifying, we get:

AB^2 = dL - L^2

Taking the square root of both sides, we get:

AB = √(dL - L^2) inches

Therefore, the distance between the point where the stick touches the rim and the ground is √(dL - L^2) inches.

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Answer: x=180

Step-by-step explanation:

360/120=x/60

3=x/60

x=180

By the similarity of triangles the length of the side RS is 180 units.

A triangle is a three-sided closed-plane figure formed by joining three noncolinear points. Based on the side property triangles are of three types they are Equilateral triangle, Scalene triangle, and Isosceles triangle.

We know in similar triangles the ratio of their corresponding sides are equal.

Given, Are two triangles OPQ and ORS.

Therefore,

OP/PR = PQ/RS.

120/360 = 60/x.

120x = 21600.

12x = 2160.

x = 2160/12.

x = 180.

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Answer:

Jim has to work 48 hours to earn at least $300 per week.

Step-by-step explanation:

Jim makes 8.50 per hour

so in x hours he makes 8.5x

26% is deducted for taxes

so his take home pay is 8.5x(1 - .26) = 8.5x(.74) = 6.29x

To make > = $300 Jim must work enough hours so that

6.29x >= 300

x >= 17.49

To determine their ages, the substitution approach is used.

Joy's age and her brother's age are differed by 10 years.

What is linear system?

It is an system of equation where the maximum power of the variable is consistently 1. a single-dimensional object with no breadth. It consists of an endless number of dots placed side by side.

Given

The combined ages of Joy and her brother total 24.

Joy's older brother is three years older than  twice his age she is.

To locate

Joy's age as compared to that of her brother.

Assume that Joy is x years old and her brother is y.

then in line with the first circumstance.

x + y = 24 ...(1)

And according to the second condition.

2x + 3 = y ...(2)

On solving equations 1 and 2. We get

x + 2x + 3 = 24

            x = 7

Then

y = 2x + 3

y = 17

Then, the difference between Joy's age and her brother's age.

y - x = 17 - 7 = 10

Thus, the difference between Joy's age and her brother's age is 10.

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The estimated total time for all five pools is approximately 13.85 hours.

To estimate the time required to install the fifth pool using the learning curve, we can use the formula:

Time for nth unit = Time for first unit * (n^b)

Where:

Time for nth unit is the estimated time to install the nth pool

Time for first unit is the estimated time to build the first pool (30 hours)

n is the number of units (in this case, n = 5 for the fifth pool)

b is the learning curve exponent (85% learning rate corresponds to b = log(0.85) / log(2))

Let's calculate the estimated time for the fifth pool:

b = log(0.85) / log(2) ≈ -0.157

Time for fifth pool = Time for first pool * (5^b)

Time for fifth pool = 30 * (5^(-0.157))

Calculating this, we find:

Time for fifth pool ≈ 30 * 0.6764 ≈ 20.29 hours

Therefore, the estimated time required to install the fifth pool is approximately 20.29 hours.

To calculate the total time for all five pools, we need to sum the time required for each pool from the first to the fifth. Since the learning curve assumes decreasing time with increasing units, we can use a summation formula:

Total time for all units = Time for first unit * ((1 - (n^b)) / (1 - b))

Using this formula, let's calculate the total time for all five pools:

Total time for all five pools = Time for first pool * ((1 - (5^b)) / (1 - b))

Total time for all five pools = 30 * ((1 - (5^(-0.157))) / (1 - (-0.157)))

Calculating this, we find:

Total time for all five pools ≈ 30 * 0.4615 ≈ 13.85 hours

Therefore, the estimated total time for all five pools is approximately 13.85 hours.

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The function F(x, y) has a local maximum at (-2, -3), saddle points at (2, -3) and (-2, 1), and a local minimum at (2, 1).

To find the critical points and classify them as local maxima, local minima, or saddle points, we need to find the partial derivatives of the function F(x, y) and evaluate them at each critical point.

Given the function F(x, y) = x³ - 12x + y³ + 3y² - 9y, let's find the partial derivatives:

∂F/∂x = 3x² - 12

∂F/∂y = 3y² + 6y - 9

To find the critical points, we set both partial derivatives equal to zero and solve the resulting system of equations:

3x² - 12 = 0 --> x² = 4 --> x = ±2

3y² + 6y - 9 = 0 --> y² + 2y - 3 = 0 --> (y + 3)(y - 1) = 0 --> y = -3 or y = 1

Therefore, the critical points are (-2, -3), (2, -3), and (-2, 1).

To classify these critical points, we use the second partial derivatives test. The second partial derivatives are:

∂²F/∂x² = 6x

∂²F/∂y² = 6y + 6

Now, let's evaluate the second partial derivatives at each critical point:

At (-2, -3):

∂²F/∂x² = 6(-2) = -12 (negative)

∂²F/∂y² = 6(-3) + 6 = -12 (negative)

Since both second partial derivatives are negative, the point (-2, -3) corresponds to a local maximum.

At (2, -3):

∂²F/∂x² = 6(2) = 12 (positive)

∂²F/∂y² = 6(-3) + 6 = -12 (negative)

Since the second partial derivative with respect to x is positive and the second partial derivative with respect to y is negative, the point (2, -3) corresponds to a saddle point.

At (-2, 1):

∂²F/∂x² = 6(-2) = -12 (negative)

∂²F/∂y² = 6(1) + 6 = 12 (positive)

Since the second partial derivative with respect to x is negative and the second partial derivative with respect to y is positive, the point (-2, 1) corresponds to a saddle point.

Therefore, the critical points are classified as follows:

Local maximum: (-2, -3)

Saddle points: (2, -3) and (-2, 1)

Local minimum: (2, 1)

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Answer:

5

Step-by-step explanation:

The sentence "64% of women in the sample are the principal investor in their household" serves as an example of descriptive statistics.

This sentence provides a summary of the survey's data and a descriptive statistic (percentage) that characterizes the sample's characteristics.

According to the survey's findings, "there is a correlation between American women and being the principal investor in their household." The sample data are used to draw this conclusion about the population. Despite the fact that the sample is not representative of all American women, the findings indicate that a sizable number of the women in the sample are the principal investors in their households.

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Answer:

 6 just 6 Your welcome !!

Step-by-step explanation:  

A point marked at Negative 2.5, is the correct image that shows the position of -2.5 on the number line.

The correct answer is A, a point marked at Negative 2.5.

To locate -2.5 on the X-axis, we need to find the position that corresponds to a point 2.5 units to the left of the origin (0,0) on the X-axis.

Since each line segment on the X-axis represents one unit, we can count 2.5 units to the left of the origin to find the position of -2.5.

Therefore, A, which shows a point marked at Negative 2.5, is the correct image that shows the position of -2.5 on the number line.

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The values of the variables and numbers in radical form are presented as follows;

43a) x > -5

40a) a > 0

44b) x < 0

47e) x > 0

43b) x = The set of all real numbers

44a) The set of all numbers

45 a) x = 14

45 b) x = 0

45 c) x = -1

45 d) x = -4

45 e) x = 1

42 d)x = 5/196

9 e) x = 4

9 f) x = 8

9 a) √(0.6/36) ≈ 0.13

9 h) √((4 - 10)/(0.01)) = i·10·√6

A radical also known as a root is represented using the square root or nth root symbol and is the opposite of an exponent.

43 a) \(\sqrt{x + 5}\)

x + 5 > 0

Therefore, x > -5

40a) ∛a

a > 0

44b) √(-5·x)³

-5·x < 0

x < 0

47e) √(13 - (13 - 2·x))

(13 - (13 - 2·x)) > 0

13 > (13 - 2·x)

0 > -2·x

x > 0

43b) √|x| + 1

x = All real numbers

44 a) √(-2·x)²

√(-2·x)² = -2·x

x = Set of all numbers

45 a) √(x - 5) = 3

(x - 5) = 3² = 9

x = 9 + 5 = 14

45b) √(2·x + 4) = 2

2·x + 4 = 2²

2·x = 2² - 4 = 0

x = 0/2 = 0

45c) √(x·(x + 1)) = 0

(x·(x + 1)) = 0

(x + 1) = 0

x = -1

45 d) √(x + 5) = -1

(x + 5) = (-1)²

x + 5 = 1

x + 5 = 1

x = 1 - 5 = -4

x = -4

45e) √x + x² = 0

√x = -x²

(√x)² = (-x²)² = x⁴

x  = x⁴

1 = x⁴ ÷ x = x³

x = ∛1 = 1

x = 1

42d) \(\sqrt{\dfrac{5}{x} } +3= 17\)

\(\sqrt{\dfrac{5}{x} }= 17-3 =14\)

\(\dfrac{5}{x} }=14^2=196\)

\(x = \dfrac{5}{196}\)

9e) \(\sqrt{\dfrac{4}{x} } = 1\)

\(\dfrac{4}{x} } = 1^2\)

x × 1² = 4

x = 4

19f) ∛x - 2 = 0

∛x = 2

x = 2³ = 8

9a) \(\sqrt{\dfrac{0.6}{36} }\)

\(\sqrt{\dfrac{0.6}{36} }\) = \(\sqrt{\dfrac{1}{60} }= \dfrac{\sqrt{15}}{30} \approx 0.13\)

9h) \(\sqrt{\dfrac{4-10}{0.01} }\)

\(\sqrt{\dfrac{4-10}{0.01} }\)= √(-600) = √(-1)·√(600) = i·10·√6

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Answer:

A. dilation

Step-by-step explanation:

The triangle are the same but different sizes so it would be a dilation

*plssss give me brainlistttt*

The midsegment linking the cartesian coordinates of two of a triangle's sides is parallel to the fourth aspect of the triangle, and its length is half that of the third side, according to the midsegment theorem.

The assertions that the Greek mathematician Pythagoras discovered the properties of right-angled triangles in the fifth century BC just did not match up, according to many. Some people think following commentary shows it was a joint effort among his disciples, the Pythagoreans.

Equilateral: equal angles and all three sides. Acute isosceles: two identical sides and angles, both of which are only about 90 degrees. Acute scalene has irregular sides and angles, all of which are under 90 degrees. Obtuse isosceles: two identical sides and angles, one of which is more than 90 degrees.

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Answer:

Imperfect substitutes

explanation:

The choices above are not perfect substitutes, meaning they can not be perfectly or directly replace the other. Imperfect substitutes are close substitutes but not perfect substitutes. Unlike perfect substitutes, imperfect substitutes satisfies same utility but has different characteristics and therefore not entirely substitutable. For example, while one may want to have the 40 marks too, he'd rather have 60 marks even if the criteria for a 60 mark score was increasingly hard.

Answer:

80.

............................

When triangle DUH is rotated and then dilated by a scale factor of n, it means that the triangle is first turned around a fixed point, and then all of its sides are enlarged or reduced by a factor of n.

The rotation changes the position and orientation of the triangle in the plane, while the dilation changes its size. The resulting triangle will have different angles and side lengths than the original triangle, but it will be similar to it because the shape remains the same. The scale factor n determines how much bigger or smaller the triangle becomes after the dilation.

If triangle DUH is rotated and then dilated by a scale factor of n, it means the triangle has undergone two transformations. First, the triangle is rotated around a point, changing its orientation but keeping its shape and size. Second, the triangle is dilated by a scale factor of n, which enlarges or shrinks the triangle proportionally while maintaining its overall shape. The final result is a triangle with the same shape as the original DUH but with a different size and orientation.

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Answer:

1 is 2/44=40/88

2 is 24/50=48/25

3 is 50/30=100/60

4 is 41/20.5=19/2

Step-by-step explanation:

your just multiplying or dividing by 2

pls mark braliest

Answer:

1: 880, 2: 24, 3: 30, 4: 82

Step-by-step explanation:

1: If we divide by 2 we get 20. Then multiply 44 x 2 = 880

2: 25 is half of 50. So then, we divide 48 by 2 = 24

3: 50 x 2 = 100. Then, we divide 60 by 2 becasue it is reverse; 60÷2 = 30

4: 38 divided by 19 = 2. Then we multiply 41 by 2 becasueit is reversed. 41 x 2=82

Answer:

I dont think you gave the entire question but
bridget is saying x > 3
dana is saying x < 3

Answer:

10kg and 60 kg.

Step-by-step explanation:

Let the kid's mass be x kg, then the goat's mass is 6x.

x + 6x = 70

7x = 70

x = 10.

Answer:

10/3

Step-by-step explanation:

rate of change = gradient

(17-7)/(6-3) = 10/3

basically difference of y values / difference of x values

Notice that the total probability is distributed in 8 minutes. Furthermore, the total probability has to be equal to 1, then:

Where h is the height of the distribution. The first answer is 0.125.

b) Notice that 16-13=3 min. Therefore, the probability we are looking for is:

c) Notice that the probability for the bus to arrive before 15 minutes is:

Thus, the probability that will we wait more than 15 minutes is:

The third answer is 0.25

d) The probability that one will wait at most 15 minutes was found in the previous step:

The fourth answer is 0.75

Answer:

Step-by-step explanation:

m<1 = 50

m<2 = 22

m<3 = 108

m<4 = 50

m<5 = 65

m<6 = 50

m<7 = 43

m<8 = 65

m<9 = 75

m<10 = 18

m<11 = 25

m<12 = 40

m<13 = 115

m<14 = 65

m15 = 115

Answer:

(8-28i)/53

hope it helps!

Step-by-step explanation:

~inequality

3(8 - 4x) < 6(x - 5)

= 24 - 12x < 6x - 30

= -12x - 6x < - 30 - 24

= -18x < - 54

= x > 3 ✔️

~ nice to help you ^^

The point (7,84) represents a precise location on a graph or coordinate plane.

A coordinate is a set of values that specifies the position or location of a point in a geometric space.

The point (7,84) represents a specific location on a graph or coordinate plane. The first number, 7, represents the point's position on the x-axis, which is a horizontal line that runs left to right. The second number, 84, represents the point's position on the y-axis, which is a vertical line that runs up and down. Together, the two numbers give us a precise location for the point.

In this situation, we don't have enough context to know what the point (7,84) represents. It could be the location of a city on a map, the amount of rainfall in inches on a specific day, or the price of a stock at a particular time. However, regardless of the situation, the point (7,84) is simply a specific location in a two-dimensional space that has been identified using coordinates.

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Complete Question:

What does the point (7,84) represent in the graph?​ And define the explanation for each value.