If w = 4r what is the value of w when r = 7

Answer:

I HATE MATH TeeHee

Step-by-step explanation:

i actually hate it-

ED GE NU IT Y PE OP LE

When printing a newspaper, you are most likely to use a line screen setting of 85 lpi (lines per inch).

The value of x is 23.22°. By using the Cosine rule

The Cosine Rule of trigonometry states that the square of any side of a given triangle is equal to the sum of the squares of the other sides minus twice the product of the other two sides multiplied by the cosine of the angle included between them. The Law of cosines and Cosine Formula are other names for the cosine rule.

The expression for representing cosine rule is expressed as:

c² = a² + b² - 2ab cos C

Given,

a = 26

b = 50

c = 29

Substituting the value to the equation:

c² = a² + b² - 2ab cos C

29² = 26² + 50² - 2(26)(50) cos C

841 = 676 + 2500 - 2600cosC

2335 =2600cos C

cos C = \(\frac{2335}{2660}\)

C = 23.22°

The value of x is 23.22°

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Answer: 23.2 rounded to nearest tenth

Step-by-step explanation:

Answer:

i don't know how to work this

Answer:

x = \(\frac{3}{4}\) , x = 20

Step-by-step explanation:

2(\(\frac{3x-5}{x+2}\) ) - 5 (\(\frac{x+2}{3x-5}\) ) = 3

Multiply through by (x + 2)(3x - 5) to eliminate the fractions

2(3x - 5)² - 5(x + 2)² = 3(x + 2)(3x - 5) ← expand factors on both sides

2(9x² - 30x + 25) - 5(x² + 4x + 4) = 3(3x² + x - 10) ← distribute parenthesis

18x² - 60x + 50 - 5x² - 20x - 20 = 9x² + 3x - 30 ← simplify left side

13x² - 80x + 30  = 9x² + 3x - 30 ( subtract 9x² + 3x - 30 from both sides )

4x² - 83x + 60 = 0 factor by splitting the x- term

4x² - 80x - 3x + 60 = 0

4x(x - 20) - 3(x - 20) = 0

(4x - 3)(x - 20) = 0

Equate each factor to zero and solve for x

4x - 3 = 0 ⇒ 4x = 3 ⇒ x = \(\frac{3}{4}\)

x - 20 = 0 ⇒ x = 20

Answer:

The equation which is equivalent to 60% of 25 is x = 0.6 * 25

An equation is used to show the relationship between variables, numbers.

Let x represent the value of 60% of 25. Hence:

x = 60% of 25

x = 0.6 * 25

Hence the equation which is equivalent to 60% of 25 is x = 0.6 * 25

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Answer:

A. 0.6 • 25 = 15

C. 6/10 = x/25 => 6/10 * 25 = 15 = x

E. X/25 = 60/100 => X = (60/100) * 25 = 15

So the equations that are equivalent to 60% of 25 are A, C, and E.

Step-by-step explanation:

Answer:

2.7

Step-by-step explanation:

6.75/100 = 0.0675

40 times 0.0675 is 2.7

Step-by-step explanation:

2/3+3/5

=10+9/15

=19/15

The mistake she made was that she didn't took right LCM.

The value of the fraction 2/3 + 3/5 is 19/15.

A fraction is written in the form of a numerator and a denominator where the denominator is greater that the numerator.

Example: 1/2, 1/3 is a fraction.

We have,

2/3 + 3/5

= (10 + 9)/15

= 19/15

Thus,

The value is 19/15.

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Answer:

no

Step-by-step explanation: you are solving for the lengths of the different sides of the triangle

The question asks us to determine the surface area of a square-shaped patio that Pedro is covering with ceramic tiles. We are given that the width of the patio is 9 meters.

To find the surface area of a square, we need to multiply the width of one side by itself. In this case, since the patio is square-shaped, the width of one side is also the length of the other side.

So, the surface area of the square patio can be calculated by multiplying the width (9 meters) by itself:

9 meters * 9 meters = 81 square meters.

Therefore, the surface area of the patio that will be covered with ceramic tiles is 81 square meters.

The surface area of the patio that will be covered with ceramic tiles is 81 square meters.

To find the surface area of the square-shaped patio, we multiply the width (9 meters) by itself, since the patio is square-shaped and all sides have the same length. This calculation gives us a surface area of 81 square meters. It is important to note that the unit of measurement for the surface area is square meters, which represents the area covered by the ceramic tiles. The concept of surface area is used to determine the amount of material needed to cover a given space. In this case, Pedro will need 81 square meters of ceramic tiles to cover the entire patio.

The surface area of the patio that Pedro will cover with ceramic tiles measures 81 square meters.

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Answer:

the slope is m=6 and the y -intecept is b=3 or (0,3)

Answer:

A regular polygon is a polygon with sides of equal length. Some examples include, a equilateral triangle, square, regular pentagon, regular hexagon, regular heptagon, regular octagon, regular nonagon, regular decagon...

Answer:

JK=80

Step-by-step explanation:

7x+ 5= 8x

5= 8x-7x

5=x

x=5

8×5=40

40×2=80

Hope this helps!

Please mark me brainliest if possible. :)

Answer:

Step-by-step explanation:

y - 1/6 = 0(x - 12/6)

y - 1/6 = 0

y = 1/6

The coffee will reach a temperature of 143 degrees Fahrenheit in approximately 18.67 minutes.

Newton's law of cooling states that the rate of cooling of an object is proportional to the temperature difference between the object and its surroundings. Mathematically, we can write this as:

dT/dt = -k(T - T_s)

where dT/dt is the rate of change of temperature with respect to time, T is the temperature of the object, T_s is the temperature of the surroundings, and k is a constant of proportionality.

In this problem, we are given that the coffee has a temperature of 200 degrees Fahrenheit when freshly poured and cools to 188 degrees Fahrenheit after 2 minutes in a room at 80 degrees Fahrenheit. Let's call the time at which the coffee reaches a temperature of 143 degrees Fahrenheit as t.

Using Newton's law of cooling, we can set up an equation as:

(dT/dt) = -k(T - T_s)

Integrating both sides, we get:

ln(T - T_s) = -kt + C

where C is a constant of integration.

Using the initial conditions, we can solve for C:

ln(200 - 80) = -k(0) + C

C = ln(120)

So the equation becomes:

ln(T - 80) = -kt + ln(120)

Now we can use the fact that the temperature of the coffee has cooled to 188 degrees Fahrenheit after 2 minutes to find the value of k:

ln(188 - 80) = -k(2) + ln(120)

k = (ln(120) - ln(108)) / 2

k ≈ 0.0776

Now we can solve for the time t when the coffee reaches a temperature of 143 degrees Fahrenheit:

ln(143 - 80) = -0.0776t + ln(120)

t ≈ 18.67 minutes

Therefore, the coffee will reach a temperature of 143 degrees Fahrenheit in approximately 18.67 minutes.

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Answer:

42

Step-by-step explanation:

7 x 6 = 42, making 42 a multiple of seven and less than 45.

Answer:

Step-by-step explanation:

Answer: hmmmm, nothing’s there!

Step-by-step explanation:

Answer:

help with what?

Step-by-step explanation:

The size of each section of the circle graph are 40%, 20%, 10%, 15%, and 15%.

A circle graph representing the data in this survey is shown below.

In Mathematics, a circle graph is sometimes referred to as a pie chart and it can be defined as a type of graph that is used for the graphical representation of the proportional relationship between each part to a whole, especially by dividing a circle into various sectors or sections.

Since there were 180 students surveyed, their preference can be calculated as follows:

Strawberries = 72/180 × 100 = 40%

Grapes = 36/180 × 100 = 20%

Bananas = 18/180 × 100 = 10%.

Oranges = 27/180 × 100 = 15%.

Apples = 27/180 × 100 = 15%.

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We can determine that events A and B are dependent.

Based on the given information, we can determine if the events A and B are dependent or not. Two events are considered dependent if the occurrence of one event affects the probability of the other event occurring.

In this case, we know that the probability of event A occurring given that event B happens is 0.7. This suggests that the occurrence of event B affects the probability of event A occurring. Therefore, we can conclude that events A and B are dependent.

Moreover, we can use the formula for conditional probability to calculate the probability of both events occurring together. The formula states that the probability of A and B occurring together is equal to the probability of A given B multiplied by the probability of B.

P(A and B) = P(A | B) x P(B)
P(A and B) = 0.7 x 0.2
P(A and B) = 0.14

This means that the probability of events A and B occurring together is 0.14, which is relatively low. However, since the events are dependent, it is important to consider the occurrence of event B when calculating the probability of event A.

In conclusion, based on the given information, we can determine that events A and B are dependent, and we can calculate the probability of both events occurring together using the formula for conditional probability.

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Answer:

j(-18) = -.4

Step-by-step explanation:

j(x) = 0.3x + 5

Let x = -18

j(x) = 0.3*-18 + 5

     = -5.4+5

    = -.4

Answer:

sin (x) ≥ 0, between 0° and 180° or 0 and π,

sin(x) ≥ 1/2, between 30° and 150° or π/6 and 5π/6

Step-by-step explanation:

This is how I would do it. Subtract sin(x) from both sides

2\(sin^{2} (x)\) - sin(x) ≥ 0 , then factor out sin(x)

sin(x) [2 sin(x) - 1] ≥0, then set each factor ≥ 0

sin(x) ≥ 0 and 2 sin(x) - 1 ≥ 0

sin (x) ≥ 0, between 0° and 180° or 0 and π

2 sin(x) ≥ 1

sin(x) ≥ 1/2, between 30° and 150° or π/6 and 5π/6

Answer:

10 miles

Step-by-step explanation:

The three main techniques of measuring quantitative data are surveys, experiments, and observational studies.

1. Surveys: Surveys involve collecting data by asking a sample of individuals to respond to a set of questions. This method can be done through various formats such as questionnaires, interviews, or online polls. Surveys are useful for gathering information on opinions, attitudes, or preferences and can help determine relationships between variables.
2. Experiments: Experiments involve manipulating one or more variables to observe the effect on a dependent variable. Participants are typically randomly assigned to different conditions, and the researcher measures the outcomes to determine cause-and-effect relationships. Experiments can provide strong evidence for causal relationships and are often used in scientific research.
3. Observational studies: Observational studies involve collecting data by observing and recording the natural behavior or characteristics of individuals or groups without any intervention. Researchers can observe the participants in their natural settings or use existing data sources such as records, databases, or archival data. Observational studies are useful for understanding patterns, trends, and relationships between variables, but they cannot establish causality.
These techniques can provide valuable insights into various aspects of quantitative data, allowing for informed decision-making and improved understanding of patterns and relationships.

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When a cylinder is sliced in such a way that the plane passes through the cylinder in a slanted direction without going through either base, the resulting cross section is an elliptical shape.

To visualize this, imagine a cylinder with circular bases. When a plane intersects the cylinder in a slanted direction, it cuts through the curved surface of the cylinder, creating an elliptical cross section.

The exact shape and size of the elliptical cross section will depend on the angle at which the plane intersects the cylinder and the specific orientation of the cylinder. The major axis of the resulting ellipse will be parallel to the slanted direction of the plane, while the minor axis will be perpendicular to it.

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-1

Step-by-step explanation:

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

Answer:

Step-by-step explanation:

The answer is B, the solution to your equation is at (2,1). Your solution is where the two lines meet.

Answer:

The second option.

Step-by-step explanation:

When two lines intersect, they usually intersect at just one point (unless they are parallel, where they never intersect; or no solutions when they infinitely intersect).

According to the graph provided, the lines are intersecting at one point: (2, 1).

So, your answer will be the second option!

Hope this helps!

The pair of equations whose lines are perpendicular is (d) y = 1/6x + 3; y = -6x - 3

from the question, we have the following parameters that can be used in our computation:

The pair of equations

By definition;

The slopes of perpendicular lines are opposite reciporcals

So, we have

(a) -1/3 and -3 false

(b) -3 and -6 false

(c) 3 and 3 false

(d) 1/6 and -6 true

Hence, the equations are (d) y = 1/6x + 3; y = -6x - 3

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d. Expected life in years of the depreciable asset. The acceptable way to express the useful life of a depreciable asset is in terms of the expected life in years.

The useful life refers to the period of time over which the asset is expected to contribute to the revenue-generating activities of a business.

While options a, b, and c may be relevant factors for certain specific assets (such as units produced, hours of productivity, or miles driven), they do not encompass the overall concept of useful life. Useful life is a broader measure that takes into account the anticipated duration of productive use, regardless of specific output or activity metrics.

Expressing the useful life in years provides a common standard for comparison and allows for consistency in depreciation calculations and financial reporting. It is a practical and widely accepted approach to estimating the lifespan of a depreciable asset.

It is worth noting that the estimated useful life in years may vary depending on the nature of the asset and industry practices. It is typically determined based on factors such as technological advancements, physical wear and tear, economic obsolescence, and the intended purpose of the asset.

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Capital asset pricing model (CAPM) Applications of Capital Asset Pricing Model (CAPM) are as follows;The most important application of CAPM is in the calculation of the cost of equity.

CAPM is used by financial analysts and investors to determine the appropriate rate of return for individual stocks and portfolios. CAPM is also useful in determining the required rate of return for capital projects. By calculating the cost of equity capital, companies can make better investment decisions by determining which projects will yield the greatest return on investment.

CAPM can be used in the valuation of assets, such as stocks, real estate, and other investments. Finally, CAPM is useful in evaluating risk.

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