Please help!! Geometry, will mark brainliest!

Answer:

answer:

the answer is -5

step-by-step explanation:

for an instance you lost 3 fingers of your one hand only to lose the other two then you won't have any finger in one hand therefore you have 5 less (-5) fingers. charot

Answer:

true

Step-by-step explanation:

Answer:

36°; 108°

Step-by-step explanation:

The measure of each interior angle of a regular pentagon is 108°.a) Two consecutive radii are joined to form an angle. The sum of these two angles is equal to 360° as a full rotation. Therefore, each angle formed by two consecutive radii measures (360°/5)/2 = 36°.b) A radius and a side of the polygon form an isosceles triangle with two base angles of equal measure. The sum of the angles of this triangle is 180°. Therefore, the measure of the angle formed by a radius and a side is (180° - 108°)/2 = 36°. Thus, the angle formed by the radius and the side plus two consecutive radii angles equals 180°. Hence, the angle formed by a radius and a side measures (180° - 36° - 36°) = 108°.Therefore, the measures of the angles formed by two consecutive radii and a radius, and a side of the polygon are 36° and 108°, respectively. Thus, the answer is 36°; 108°.

The dimensions of the kitchen is, 12 ft by 14 ft

Find scale:

\(\frac{0.8in}{4ft} = \frac{1.4 in}{7 ft} = 0.2 \frac{in}{ft}\)

Next lets us find the " real " dimensions on the kitchen:

You need to divide the measurements on the scale drawing by 0.2.

2.4 / 0.2 = 12 ft

2.8 / 0.2 = 14 ft

Answer:

x = 70

Step-by-step explanation:

Answer:

Step-by-step explanation:

b/c we know that the inside angles of a triangle add to 180

180 = 38 + x + x + 2

180 = 40 + 2x

140 = 2x

70 = x

The value of m in the diagram is 18°

What is a right-angle?

A right angle is an angle of 90°. When two rays intersect and form a 90˚ angle or are perpendicular to each other at the intersection, they are said to form a right angle.

A right angle is an angle that measures 90 degrees. It is the most commonly seen angle in our day-to-day life.

From the diagram, the two angles sum up to 90°

∠WZX + ∠XZY = ∠WZY

3m + 3 + 33 = 90

3m + 36 = 90

3m = 90 - 36

3m = 54

m = 54/3

m = 18°

In conclusion the value of m is 18°

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Answer:

D

Step-by-step explanation:

she made a sign error when multiplying and should have had 256 as an answer

Answer:

the answer is D

Step-by-step explanation:

I'm taking the test now

The displacement of the roller-coaster car from its starting point can be determined using graphical techniques. The main answer is that the displacement is approximately 157.5 ft in magnitude and in the direction opposite to the car's initial motion.

To explain further, we can break down the motion into horizontal and vertical components. The car initially moves 200 ft horizontally, which means its horizontal displacement is 200 ft. Then, it rises 135 ft at an angle of 30.0° above the horizontal. This vertical displacement can be calculated as 135 ft * sin(30.0°) = 67.5 ft upward.

Next, the car travels 135 ft at an angle of 40.0° downward. This contributes to a vertical displacement of 135 ft * sin(40.0°) = 87.2 ft downward.

To find the total vertical displacement, we subtract the downward displacement from the upward displacement: 67.5 ft - 87.2 ft = -19.7 ft.

Finally, we can use the Pythagorean theorem to calculate the magnitude of the displacement. The horizontal displacement is 200 ft and the vertical displacement is -19.7 ft. So, the magnitude of the displacement is sqrt((200 ft)^2 + (-19.7 ft)^2) ≈ 157.5 ft.

Since the vertical displacement is negative, the displacement is in the direction opposite to the initial motion of the car.

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Answer:

the picture isn't whole, but what I see is a cylinder.

Step-by-step explanation:

The maximum profit is 6 and it is obtained when we mix 0.6 kg of type A, 0 kg of type B, and 0.4 kg of type C.

The optimal mix for the maximum profit can be found as follows:

The company mixes three types of toffees, A, B, and C. Let the weights of type A, B, and C be a, b, and c kg, respectively. Let us assume that we are making 1kg of toffee pack. Therefore, the weight of type C should be 1 - (a + b) kg. Also, the mixture must contain at least 300 gms of type A i.e a >= 0.3 kg

Also, the weight of the first two types (A and B) must be at least equal to the weight of type C, i.e a + b >= c. This condition can also be written as a + b - c >= 0

Let us now calculate the total cost of making 1kg of toffee pack.

Cost = 20a + 10b + 5c

If the pack is sold at Rs. 17, then the profit per 1kg of toffee pack is by

Profit = Selling Price - Cost = 17 - (20a + 10b + 5c)

Now we have the following linear programming problem:

Maximize P = 17 - (20a + 10b + 5c)

Subject to constraints: a + b + c = 1 (since we are making 1kg of toffee pack)

a >= 0.3a + b - c >= 0a, b, c >= 0

We can use the simplex method to solve this linear programming problem. However, to save time, we can solve it graphically. The feasible region is as follows:

We can see that the corner points of the feasible region are: (0.3, 0, 0.7), (0.6, 0, 0.4), (0, 0.5, 0.5), and (0, 1, 0).

Let us calculate the profit at each of these corner points. For example, at the point (0.3, 0, 0.7), we have a = 0.3, b = 0, and c = 0.7. Therefore, the profit is

P = 17 - (20(0.3) + 10(0) + 5(0.7)) = 3.5

Similarly, we can calculate the profit at the other corner points as well. The corner point (0.3, 0, 0.7) gives a profit of 3.5

Corner point (0.6, 0, 0.4) result in a profit of 6

Corner point (0, 0.5, 0.5) results in a profit of 5

Corner point (0, 1, 0) gives a profit of 3

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The value of the double integral is 37.5, which represents the volume of the right triangular prism.

To identify the solid represented by the given double integral, we can rewrite the integrand in terms of the height of the solid at each point (x,y).

The integrand is (5 - x), which means that the height of the solid at point (x,y) is given by (5 - x). Therefore, the solid is a right triangular prism with a base in the xy-plane that extends from x=0 to x=5 and a height of 5 units.

The double integral can be evaluated by integrating the height function over the region R. Thus, we have:

∫∫R (5 - x) dA = ∫0^5 ∫0^3 (5 - x) dy dx

Integrating with respect to y first, we get:

∫0^5 ∫0^3 (5 - x) dy dx = ∫0^5 (5 - x) * 3 dx

= 3∫0^5 (5 - x) dx = 3(5x - x^2/2)|0^5

= 3(25/2) = 37.5

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The number of atoms present in 8.500 mole of chlorine atoms can be calculated using Avogadro's number, which is 6.022 x \(10^{23}\) atoms per mole. Therefore:

Number of atoms = 8.500 mole x 6.022 x \(10^{23}\)atoms/mole

Number of atoms = 5.1177 x \(10^{24}\) atoms

The mass of 15.50 mole of oxygen can be calculated using the molar mass of oxygen, which is 16.00 g/mol. Therefore:

Mass = 15.50 mole x 16.00 g/mole

Mass = 248 g

The number of moles of helium in 1.953 x \(10^{8}\) g of helium can be calculated using the molar mass of helium, which is 4.00 g/mol. Therefore:

Number of moles = 1.953 x \(10^{8}\) g / 4.00 g/mol

Number of moles = 4.883 x \(10^{7}\) mol

The number of atoms in 147.82 g of sulfur can be calculated using the molar mass of sulfur, which is 32.06 g/mol, and Avogadro's number. Therefore:

Number of moles = 147.82 g / 32.06 g/mol

Number of moles = 4.608 mol

Number of atoms = 4.608 mol x 6.022 x \(10^{23}\) atoms/mol

Number of atoms = 2.773 x \(10^{24}\) atoms

The molar mass of Co (cobalt) is 58.93 g/mol.

The formula mass of Ca3(PO4)2 can be calculated by adding the atomic masses of each element in the compound. The atomic masses are:

Ca = 40.08 g/mol

P = 30.97 g/mol

O = 16.00 g/mol

Formula mass = (3 x Ca) + (2 x P) + (8 x O)

Formula mass = (3 x 40.08 g/mol) + (2 x 30.97 g/mol) + (8 x 16.00 g/mol)

Formula mass = 310.18 g/mol

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Total No. of cards in a deck = 52

Total no. of suits = 4

Total number of cards in one suit = \(\frac{52}{4} \\\) = 13

Ways of selecting combinations of 4 from 13 hearts (combination) = \(\frac{13!}{9! 4!}\)

= 715

Ways of selecting combinations of 3 from 13 spades (combination) = \(\frac{13!}{10! 3!}\)

= 286

Combining the two independent choices, there are  715×286=204490

ways to select a seven-card hand with 4 hearts and 3 spades.

Ways of selecting 7 cards from 52 cards = \(\frac{52!}{7! 45!}\) = 133784560

Probability of getting 4 hearts and 3 spades on drwaing 7 cards from the deck = \(\frac{204490}{133784560}\) = 0.0015285 (approx.)

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The descriptions of the average distance from the earth to the moon cannot both be correct. At least one of them must be wrong.

The average distance from the earth to the moon is a well-established scientific measurement, and it is highly unlikely for two reputable sources to provide significantly different values for such a widely known and studied parameter.

The accepted average distance from the earth to the moon is approximately 384,400 kilometers.

This value has been determined through extensive astronomical observations and measurements.

While small variations in measurements may occur due to factors like the moon's elliptical orbit, these variations are typically within a narrow range.

Therefore, a difference of 467 kilometers between the two given values is significant and suggests that at least one of the descriptions is incorrect or based on inaccurate information.

It is important to rely on reliable and authoritative sources when referring to scientific measurements like the average distance from the earth to the moon.

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Answer:

10

Step-by-step explanation:

use Pythagoras Theron

a^2+b^2=c^2

let ms know if you have further questions

Using Pythagorean theorem

\(\\ \sf\longmapsto H^2=P^2+B^2\)

\(\\ \sf\longmapsto H^2=(5√3)^2+5^2\)

\(\\ \sf\longmapsto H^2=75+25\)

\(\\ \sf\longmapsto H^2=100\)

\(\\ \sf\longmapsto H=10\)

The probability of a man checking their fingernails by curled up is, 0.2373

Hence option 4 is correct.

To find the probability of a man checking their fingernails by curled up, we need to divide the number of men who reported looking at their fingernails curled up by the total number of men who responded to the questionnaire.

So, the number of men who reported looking at their fingernails curled up is 14,

And the total number of men who responded to the questionnaire is,

⇒ 14 + 45 = 59.

Therefore,

The probability of a man checking their fingernails by curled up is,

⇒ P(Curled Up) = 14/59

                          = 0.2373

So, the correct answer is option 4: 0.0473.

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In a competitive market, we need to graph the market demand and supply curves and determine the equilibrium quantity. The equilibrium quantity represents the quantity at which the demand and supply curves intersect.

To sketch the supply and demand curves, we first need to gather information on the market demand and supply. The demand curve represents the quantity of ventilators that the four hospitals are willing to purchase at different prices, while the supply curve represents the quantity of ventilators that the four producers are willing to sell at different prices.

Using the multipoint drawing tool, we can plot the market demand curve based on the data provided for the hospitals. Label this line as 'Demand'. Next, using the same tool, we can plot the market supply curve based on the data provided for the producers. Label this line as 'Supply'.

The equilibrium quantity is determined at the point where the demand and supply curves intersect. It represents the quantity of ventilators that will be sold in the market. To find this point, we identify the quantity at which the demand and supply curves meet on the graph.

By following the instructions and accurately plotting the demand and supply curves, we can determine the equilibrium quantity of ventilators sold in the market.

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Answer:

the constant rate of change is 20

Step-by-step explanation:

The required, equation to determine the number of people is T + (T + 5,500) + 2T + (2T + 300) = 36,700 and there were 10,300 people at the fair on Saturday.

Let's call the number of people who attended the fair on Thursday "T". Then we can use the information in the problem to set up an equation:

Friday's attendance = T + 5,500

Saturday's attendance = 2T

Sunday's attendance = 2T + 300

Total attendance = T + (T + 5,500) + 2T + (2T + 300) = 36,700

Simplifying the equation, we get:

6T + 5,800 = 36,700

6T = 30,900

T = 5,150

Therefore, the attendance on Thursday was 5,150 people. We can use this information to find the attendance on Saturday:

Saturday's attendance = 2T = 2(5,150) = 10,300

Thus, there were 10,300 people at the fair on Saturday.

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Answer:

Solving steps:

Question: jasmine has all nickels x and dimes y in her coin jar. if she has 36 coins in all, and four more dimes than. nickels find how much money she has in her coin jar

Find: how much money she has in her coin jar

Solution: let's make an equation for this problem

She has 4 more dimes than nikels:y= x+4 Let's use this value for y in the next equation:

she has 18 nickels and 36-18= 18 dimes

The required Jasmine has 16 nickles and 20 dimes which constitute  $2.80 in her coin jar.

Let's use the given information to set up a system of equations to solve for the number of nickels (x) and dimes (y) in Jasmine's coin jar.

We are given that Jasmine has a total of 36 coins in her jar, so we have the equation:

x + y = 36 -- Equation 1

We are also given that Jasmine has four more dimes than nickels, which can be expressed as:

y = x + 4 -- Equation 2

Now, let's solve this system of equations. We can substitute Equation 2 into Equation 1 to eliminate y:

x + (x + 4) = 36

2x = 36 - 4

x = 16

Now that we have the value of x, we can substitute it back into Equation 2 to find y:

y = x + 4

y = 16 + 4

y = 20

Therefore, Jasmine has 16 nickels (x) and 20 dimes (y) in her coin jar.

To find the total amount of money she has, we need to calculate the value of the nickels and dimes separately:

Value of nickels = 0.05 * 16 = $0.80

Value of dimes = 0.10 * 20 = $2.00

The total amount of money in her coin jar is:

$0.80 + $2.00 = $2.80

Jasmine has $2.80 in her coin jar.

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The amount of work done when winding up a 50-foot long cable with a weight density of 8 pounds per foot is 14 feet is 5600 foot-pounds.

To explain this answer in more detail, work is a measure of energy and is calculated by multiplying force and distance. In this case, the force is the weight-density of the cable, which is 8 pounds per foot. The distance is the amount of cable that was wound up, which is 14 feet. Multiplying 8 and 14 together gives us the force of 112 pounds. Multiplying 112 by the total length of the cable, which is 50 feet, gives us the answer of 5600 foot-pounds.

To further explain, it is important to remember that 1 foot-pound is equal to 1 pound-foot. That means that 1 pound of force must be applied to move an object 1 foot in order to do 1 foot-pound of work. When this is applied to the example above, we can see that 8 pounds of force must be applied to the cable in order to move it 1 foot. Multiplying this by the length of the cable (50 feet) and the amount of cable wound up (14 feet) gives us the total amount of work done, which is 5600 foot-pounds.

In summary, the amount of work done when winding up a 50-foot long cable with a weight density of 8 pounds per foot is 14 feet is 14 x 8 x 50 = 5600 foot-pounds.

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Using trigonometric identity, cos(A-B) is:

\(cos (A-B) = \frac{2\sqrt{8}\ + \sqrt{5}}{9}\)

Trigonometry deals with the relationship between the ratios of the sides of a right-angled triangle with its angles.

If sin A = 1/3 and A terminates in Quadrant 1. All trigonometric functions in Quadrant 1  are positive

sin A = 1/3 (sine = opposite/hypotenuse)

adjacent = √(3² - 1²)

               = √8 units

cosine = adjacent/hypotenuse. Thus,

\(cos A = \frac{\sqrt{8} }{3}\)

If cos B = 2/3 and B terminates in Quadrant 4.

opposite = √(3² - 2²)

                = √5

In  Quadrant 4, sine is negative. Thus:

\(sin B = \frac{\sqrt{5} }{3}\)

We have:

cos(A-B) = cosA CosB + sinA sinB

\(cos (A-B) = \frac{\sqrt{8} }{3} * \frac{2}{3} + \left \frac{1}{3} * \frac{\sqrt{5} }{3}\)

\(cos (A-B) = \frac{2\sqrt{8} }{9} + \left\frac{\sqrt{5} }{9}\)

\(cos (A-B) = \frac{2\sqrt{8}\ + \sqrt{5}}{9}\)

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The distribution A must has a smaller standard deviation. So, option C is correct.

Normal usually refers to the word "normal" in normal distribution.

The normal distribution is somewhat similar where the main observation (mean or its surrounding) occurs frequently and as we go far from mean, its chances decrease.

If we've got a normal distribution, then we can convert it to a standard normal distribution and its values will give us the z score.

If we have

\(X \sim N(\mu, \sigma)\)

(X is following a normal distribution with mean and standard deviation )

then it can be converted to a standard normal distribution as

\(Z = \dfrac{X - \mu}{\sigma}, \\\\Z \sim N(0,1)\)

Normal curve A has a wider distribution than Normal curve B.

The distribution A must has a smaller standard deviation.

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Federick chopin-nocturne Op. 9 revloutionary etude which peice conveys chopins passionate side, Nocturne Op. 9 No. 2 conveys Chopin's passionate side is the correct answer, so option B is correct.

The Nocturne Op. 9 No. 2 is generally considered to be the piece that conveys Chopin's passionate and emotional side, as it is a beautiful and expressive melody with a romantic character. The Revolutionary Etude, on the other hand, is known for its fiery and intense nature, as it was written to reflect Chopin's feelings about the political situation in his native Poland.

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To solve this problem, we can use the concept of rates and the formula:

Rate = Work / Time

Let's denote the rate of work for the first robot as R1 (in units of tasks per minute) and the rate of work for the second robot as R2 (in units of tasks per minute).

We are given that when both robots work together, they can complete the task in 5 minutes. So, their combined rate of work is:

R1 + R2 = 1 task / 5 minutes

We are also given that the first robot working alone can complete the task in 15 minutes. Therefore, its rate of work is:

R1 = 1 task / 15 minutes

Now, we can solve the system of equations:

R1 + R2 = 1/5

R1 = 1/15

To find R2, we substitute the value of R1 into the first equation:

1/15 + R2 = 1/5

To combine the fractions on the left side, we need a common denominator:

(1 + 3R2)/15 = 1/5

Cross-multiplying gives:

5 + 15R2 = 15

Subtracting 5 from both sides:

15R2 = 10

Dividing both sides by 15:

R2 = 10/15 = 2/3

Therefore, the rate of work for the second robot is 2/3 tasks per minute.

To find the time it would take for the second robot to complete the task alone, we can use the formula:

Time = Work / Rate

Time = 1 task / (2/3 tasks per minute) = 3/2 minutes

So, the second robot can complete the task alone in 3/2 minutes, which is equivalent to 1 minute and 30 seconds.

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The appropriate test to examine the relationship between the number of steps taken and HR in a group of 1000 athletes depends on the type of data and the research question.

If the number of steps and HR are both measured on a continuous scale and the research question is to examine the strength and direction of the relationship between the two variables, then the appropriate test would be Pearson's correlation coefficient.

If either the number of steps or HR is measured on a continuous scale and the other variable is measured on an ordinal scale, then the appropriate test would be Spearman's correlation coefficient.

However, if the research question is to predict HR based on the number of steps taken, and there are other variables that may influence the relationship, then multiple regression analysis would be the appropriate test.

Chi-Square test is used to examine the association between two categorical variables. It is not appropriate for examining the relationship between a continuous and categorical variable.

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The last two rows of the table should be completed as follows:

Input   Output

8       22.80

10      28.50

An algebraic expression is a mathematical phrase that contains numbers, variables, and operations. It is used to represent a single quantity or value, and can be written in terms of one or more variables.

The rule given is an algebraic expression, x, which is the input, multiplied by 2.85, which is the output. Using this information, we can determine the cost of 10 muffins.

To find the cost of 10 muffins, we can use the algebraic expression given. First, we will multiply 10, the number of muffins, by 2.85, the cost of one muffin. This gives us a total of 28.50. Therefore, the cost of 10 muffins is 28.50.

Using this same rule and process, we can also determine the cost of any number of muffins. For example, if we want to know the cost of 15 muffins, we can simply multiply 15 by 2.85, giving us a total of 42.75.

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Answer:

the number is -6  (assuming "3 lots of" means 3 times)

Step-by-step explanation:

Let the number be x

1 less than a doubled number

2x-1

5 more than 3 lots of (times???) the number

3x+5

Solve for x

2x-1 = 3x + 5

-x = 5+1

x = -6

it is delivered with the help of short note or a clear outline

Answer:

it means that 5000 was 30 percent of them

so ask your self if 30 is 5000

100 ?

Step-by-step explanation:

30. 5000

100. x

100*5000/30=16666