We will examine the 30-60-90 triangle concept in this session and learn everything there is to know about it, including its formula, definition, sides, area, and the rules that apply to this triangle.
What is the triangle of 30-60-90?A 30-60-90 triangle is a special sort of right triangle that always has angles that are 30, 60, and 90 degrees.
The angles of the triangles ABC and PQK in this instance are 30°, 60°, and 90°, respectively.
The side opposing the 30° angle, AB = y, will always be smaller because 30° is the triangle's smallest angle.
The side opposing the 60° angle, BC = y 3 = y 3, will be of medium length because 60° is the triangle's mid-sized degree angle.
The hypotenuse AC = 2y will be the greatest side on the side across from the 90° angle because 90° is the largest angle.
Considering that the Pythagorean Theorem is given by:
a² =b² +c²AD² + 1² = 2²AD² = 3²To learn more about triangle refer to:
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Complete question -
High school students from grades 9–10 and 11–12 were asked to choose the kind of band to have play at a school dance: rap, rock, or country.
Their choices were as follows:
Grades 9–10: Rap 40; Rock: 25; Country: 60
Grades 11–12: Rap: 55; Rock: 30; Country: 40
Which of the following is a correct two-way relative frequency table for the data?
Rap Rock Country Total
Grades 9–10 16% 10% 24% 50%
Grades 11–12 22% 12% 16% 50%
Total 38% 22% 40% 100%
Rap Rock Country Total
Grades 9–10 22% 12% 16% 50%
Grades 11–12 16% 10% 24% 50%
Total 38% 22% 40% 100%
Rap Rock Country Total
Grades 9–10 40 25 60 125
Grades 11–12 55 30 40 125
Total 95 55 100 250
Rap Rock Country Total
Grades 9–10 55 30 40 125
Grades 11–12 40 25 60 125
Total 95 55 100 250
Points earned on this question: 0
The correct option is C for the frequency table.
What is a frequency table?A table that depicts the frequency of occurrence of a given characteristic according to a specified set of class intervals.
The correct two-way frequency table for the date will look like this:
RAP ROCK COUNTRY TOTAL
Grades 9-10 40 30 55 125
Grades 11-12 60 25 35 120
TOTAL 100 55 90 245
The sum of the row total is equal to the sum of the column total
125 + 120 = 100 + 55 + 90
245 = 245
The correct option for the frequency table is C.
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Michelle made a bead necklace that was 13 inches long. The length of the necklace, in inches, is equal to 3 added to one-seventh the number of beads, b. How many beads did Michelle use for her necklace?
The number of beads used for Michelle necklace is 70.
How to find the number of necklace Michelle used for the necklace?Michelle made a bead necklace that was 13 inches long. The length of the necklace, in inches, is equal to 3 added to one-seventh the number of beads, b.
The number of beads Michelle used for her necklace can be calculated as follows:
number of beads she used for her necklace = b
Therefore,
13 = 3 + 1 / 7 b
13 - 3 = 1 / 7 b
10 = 1 / 7 b
cross multiply
b = 10 × 7
b = 70
Therefore,
number of beads she used for her necklace = 70
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U and V are similar figures. The scale factor of V to U is 5 : 1. What would be the area of figure U, if the area of figure V is 75 square yards?answer choices75 square yards9 square yards3 square yards15 square yards
The area of the figure/geometric shape U will be 15 yard^2.
What are geometric shapes in mathematics?
In Mathematics, Geometric shapes are the figures which demonstrate the shape of the objects we see in our everyday life. In geometry, shapes are the forms of objects which have boundary lines, angles and surfaces. There are different types of 2d shapes and 3d shapes.
Shapes are also classified with respect to their regularity or uniformity. A regular shape is usually symmetrical such as a square, circle, etc. Irregular shapes are asymmetrical. They are also called freeform shapes or organic shapes. For example, the shape of a tree is irregular or organic.
In plane geometry, the two-dimensional shapes are flat shapes and closed figures such as circles, squares, rectangles, rhombus, etc. In solid geometry, the three-dimensional shapes are cube, cuboid, cone, sphere and cylinder. We can observe all these shapes in our daily existence also. For example books (cuboid shape), glasses (cylindrical shape), traffic cones (conical shape) and so on.
Now
As the scale factor for similar shapes V and U is 5:1.
Then their area should also be in same ratio.
Given Area of V=75 square yard
Therefore,
Area of U=75/5
Area of U =15 square yard
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Darius biked for 2 hours and traveled 21 miles. Kala biked 42 miles in 5 hours. Determine how many miles each person biked in one hour. Who biked more quickly?
Step-by-step explanation:
that's so easy just learn it times
The sum of the base and the height of a triangle is 10 cm. Find the dimensions for which the area is a maximum.
The maximum area of a triangle with a base and height of 10 cm is 50 cm^2. The dimensions for this would be a base of 5 cm and a height of 5 cm.
1. The area of a triangle is calculated by taking the base multiplied by the height, then dividing by 2.
2. Since the sum of the base and the height of the triangle is 10 cm, the base and the height must be equal.
3. Therefore, the base and the height are both 5 cm, and the area of the triangle is (5 cm * 5 cm) / 2, which equals to 50 cm^2.
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For the following exercises, find the level curves of each function at the indicated value of c to visualize the given function. h(x,y) = 2x-y, c=0, -2,2
The level curves of the function h(x,y) = 2x-y at c = 0, -2, 2 are y = 2x, y = 2x + 2, y = 2x - 2 respectively.
A level curve (also called a contour line or an isocline) of a function is a curve that represents all the points where the function has a constant value. To find the level curve of a function at a given value of c, we need to set the function equal to c and solve for the variables.
For h(x,y) = 2x-y, we can find the level curves at c = 0, -2, 2 by setting the function equal to c and solving for x and y:
c = 0: 2x - y = 0y = 2xc = -2: 2x - y = -2y = 2x + 2c = 2: 2x - y = 2y = 2x - 2The level curves of h(x,y) = 2x-y at c = 0, -2, 2 are the lines y = 2x, y = 2x + 2, y = 2x - 2 respectively. Each line represents a different value of c and separates the domain of x and y into different regions where the function takes on that constant value.
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Match the statistical measure to its notation or name. population mean [Choose ] sample mean [Choose) population variance [Choose] sample variance [Choose ]population standard deviation [Choose] sample standard deviation [Choose ] number of population data values [ Choose] number of sample data values [Choose]
Population Mean is the statistical indicator to its designation or nomenclature.
What is meant by Population Mean?A population is a distinct group of individuals that can be distinguished for the purposes of data collection and analysis by at least one feature. Populations are used in statistics and other branches of mathematics. The population mean can be computed by dividing the sum of all values in the given data/population by the total number of values in the given data/population. We can refer to the total of a set of numbers as a sum. An entire set of people is referred to as a population, regardless of whether that set includes an entire country or just a number of people who share a certain trait. In statistics, the group of people from which a statistical sample is taken for a research is referred to as a population.Therefore,
The formula for the population mean, which is the population's average score on a certain variable, is: μ = ( Σ Xi ) / N. The population mean is represented by the symbol "."
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for all graphs, be sure to correctly and completely label all axes and curves and use arrows to indicate the direction of any shifts. (10 points)
Due to weaker aggregate demand, the negative demand shock will cause the aggregate demand curve to move to the left.
Result: A lower output and price level.
Part B:
Explanation of part B
Result of negative supply shock , aggregate demand falls cause the lower demand for the money . This will lead towards the left shift in money demand.(MD 1 TO MD 2(R1 TO R2)
Part c:
Interest rate and bond price are related inversely . Due to negative demand shock the interest rate falls down. vice-versa bond price will rise.
Part D:
Due to fall in the interest rate central banks will follow contractionary fiscal policy which will increase interest rate and reduce the money supply.
Part E :
If the central banks need to increase the money supply by $80 billion. Central banks need to buy securities in exchange of cash .This will Raise the money supply.
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Find the measure of each angle that adds up to 180
Answer:
? = 50°
Step-by-step explanation:
we have a right triangle, therefore with an angle of 90° (red sign) and an angle of 40°, knowing that the sum of the interior angles of all triangles is 180° we remove the known angles from 180° and find the value of angle "?"
180 - 90 - 40 =
50°
The smallest amount of rotation about the vertex from one ray to the other, measured in degrees.
The smallest amount of rotation about a vertex from one ray to the other can be calculated by subtracting the sum of the two ray measures from 180°.
The smallest amount of rotation about a vertex from one ray to the other can be calculated using the formula θ = 180° - (α + β), where θ is the measure of the angle of rotation, α and β are the measures of the two rays that are connected by the vertex. The amount of rotation between two rays is measured in degrees, which is equal to the angle between the two rays. The formula used to calculate the amount of rotation is the arctangent of the ratio of the difference in the y-coordinates to the difference in the x-coordinates. For example, if the two rays have measures of 90° and 30°, the smallest amount of rotation from one ray to the other would be 60°. This can be calculated by taking 180° - (90° + 30°) = 180° - 120° = 60°. In conclusion, the smallest amount of rotation about a vertex from one ray to the other can be calculated by subtracting the sum of the two ray measures from 180°.
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Triangle XYZ has sides that are 18 mm and 25mm.The third side is represented by the inequality < × < 43
The third side is represented by the inequality 7 < x < 43, where x is the third side.
When you know two sides of a triangle, you can calculate the range for the third side.
Let x would be the third side.
First, since 25 - 18 = 7, the third leg must be greater than 13. Otherwise, the two smaller legs would not be able to connect to form the third leg.
Second, if we combine 18 with 25 and get 63, the third leg must be smaller than 69. Otherwise, the third leg would be able to reach further than the previous two legs.
This means 7 < x < 43.
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During the week Jimmy spent $45 eating out, gained $55 mowing lawns and spent $15on gas. What was Jimmy's change in dollars at the end of the week?
The change in dollars at the end of the week is - $5
How to determine the amount received as changeFrom the question, we have the following parameters that can be used in our computation:
Amount spent = $45
Amount gained = $55
Amount spent on gas = $15
The change is then calculated as
Change = Amount gained - Amount spent - Amount spent on gas
Substitute the known values in the above equation, so, we have the following representation
Change = 55 - 45 - 15
Evaluate
Change = -5
Hence, the change is a deficit of $5
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BA
6. Kathleen spent $231 on concert tickets
for herself and 11 friends. Each ticket
cost the same.
Part A
Estimate the cost of each ticket. Write an
equation to show your work.
Part B
Find the exact cost of each ticket.
Compare your answer to your estimate
to check for reasonableness.
The equation of cost of each ticket is 11k = 231 and the exact cost of each ticket is $21.
What is algebraic expression ?
Algebraic expression can be defined as the combination of variables and constants .
Given,
Kathleen spent $231 on concert tickets for herself and 11 friends. Each ticket cost the same.
So we have to find the cost of each ticket. Write an equation to show your work and the exact cost of each ticket. Compare your answer to your estimate to check for reasonableness.
From the given information ,
The equation to show the work could be ,
231 = k * 11
SO, this is the equation 11k = 231 .
we can say that,
= $231 / 11
= $21
Hence, the equation of cost of each ticket is 11k = 231 and the exact cost of each ticket is $21
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find the missing term in the series given below 3,12,25,42?88
Answer:
63
Step-by-step explanation:
the value of the difference between the terms increases by 4 as the series continues.
basically, this shows that the difference between 3 and 12 is 9, the difference between 12 and 25 is 13 (which is 4 more than 9), the difference between 25 and 42 is 17 (which is 4 more than 12), and so on.
using this pattern, all we have to do is find the next difference- the one between 42 and the missing term.
to do this, we take the previous difference, 17, and add 4. this gives us 21.
we then add 21 to 42 to get the next term: 63.
hope this helped, good luck!
One of the cases for the known measures of an oblique triangle is given. State whether the Law of Cosines can be used to solve the triangle.
In the given oblique triangle , the required value of c using cosine rule is given by c = 34.4.
As given in the question,
In the given oblique triangle ABC,
a = 12 feet
b = 30 feet
∠A = 20°
Let us consider in triangle side opposite to angle A, B, and C are a, b, and c respectively.
Using cosine rule we have,
a² = c² + b² - 2cbcos A
Substitute the values we get,
⇒ 12² = c² + 30² - 2(c )(30) cos 20°
⇒ 144 = c² + 900 - 60c ( 0.9396)
⇒ c² -56.376c + 900 - 144 = 0
⇒ c² -56.376c +756 = 0
using quadratic formula :
c = [ ( 56.376) ± √56.376² -4(1)(756) ]/ 2
= [ 56.376 ± 12.42 ] / 2
= (56.38 + 12.42) / 2 or (56.38 - 12.42) / 2
= 34.4 or 21.98
Correct value is c = 34.4
Therefore, using the cosine rule the required values c of the triangle is equal to 34.4 .
The above question is incomplete, the complete question is :
One of the cases for the known measures of an oblique triangle is given. In triangle ABC, where a = 12 feet, b = 30 feet, and A = 20°. State whether the Law of Cosines can be used to solve the third side of the triangle .
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If the angle of elevation of P from Q is 38, then the angle of depression of Q from P is:
Answer:
52°
Step-by-step explanation:
The angle of depression is 90 - angle of elevation
So angle of depression = 90 - 38 = 52°
which of the following time-series plots is the most appropriate? hint: pay close attention to the title, axes labels, and scale.
The most appropriate time-series plot will depend on the data being visualized. The title, axes labels, and scale should all be chosen to accurately describe the data and provide the clearest understanding of the data.
The most appropriate time-series plot for a particular dataset will depend on the data being visualized. The title, axes labels, and scale should all be chosen carefully to accurately describe the data and provide the clearest understanding of the data. For example, for a time series of stock prices, the title could be "Stock Price Over Time", the axes could be labeled "Time" and "Price", and the scale could range from the lowest to the highest stock price. Additionally, the time intervals should be appropriately labeled, such as monthly, quarterly, or annually. It is important to choose the right type of plot to ensure that the data is accurately and clearly represented.
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The complete question is
which of the following time-series plots is the most appropriate? hint: pay close attention to the title, axes labels, and scale should all be chosen to accurately.
What is the answer for -7g+3-8-3g+7h
Answer:
= -10g - 5 + 7h
Step-by-step explanation:
= -7g +3 - 8 - 3g + 7h
Grouping of like terms
= -7g -3g + 3 - 8 +7h
= -10g - 5 + 7h.
The yield of corn on Mr. Geller's farm since 2001 can be modeled by the function N(t) = 10t + 88.5 (measured in kilograms) and the price per kilogram of corn can be modeled by P(t) = 81? - 10t + 1.1, where t is the number of years since 2001. According to this model, what is Mr. Geller's total amount of income generated by planting corn in 2008? Round your answer to the nearest cent.
The required total income generated by planting corn in 2008 is the amount of $1917.85.
What are the functions?The function is defined as a mathematical expression that defines a relationship between one variable and another variable.
The yield of corn on Mr. Geller's farm since 2001 can be modeled by the function N(t) = 10t + 88.5
Let's find the amount of corn produced in 2008:
N(7) = 10 x 7 + 88.5 = 158.5 (kilograms)
Next, let's find the price of corn in 2008:
P(7) = 81 - 10 x 7 + 1.1 = 12.1 ($/kilogram)
Finally, we can multiply the amount of corn by the price per kilogram to find the total income:
158.5 x 12.1 = 1917.85
Rounding to the nearest cent, the total income generated by planting corn in 2008 is $1917.85.
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Jada measured the height of a plant in a science experiment and finds that, to the nearest 1/4 of an inch, it is 4.75 inches.
The actual length of the tree based on the information is 19 inches.
How to calculate the word problem?A word problem in mathematics simply refers to a question that is written as a sentence or in some cases more than one sentence which requires an individual to use his or her mathematics knowledge to solve the real life scenario given.
Since Jada measured the height of a plant in a science experiment and finds that, to the nearest 1/4 of an inch, it is 4.75 inches.
The actual length will be:
= 4.75 × 4
= 19 inches
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Complete question
Jada measured the height of a plant in a science experiment and finds that, to the nearest 1/4 of an inch, it is 4.75 inches. What is the actual length of the tree?
math homework help me
Answer:
D
Step-by-step explanation:
because
( 5 + 2 + 1 ) is (x + y + z)
Directions: Using the digits 1 to 9 at most one time each, find the dimensions of three rectangular prisms so that their volumes are as close as possible. Note: diagram may not be drawn to scale. All the volumes are under 100 cubic units.Can you find 3 volumes that are within the range of 50 and 90?Can you find 3 volumes that are within the range of 60 and 80?The difference between all 3 volumes is less than 10.
The dimensions of the rectangular prism would be (1,8,9), (2,5,7), and (3,4,6).
What is a rectangular prism?
A rectangular prism is a solid geometric shape that has three mutually perpendicular rectangular faces, and is also known as a rectangular parallelepiped or a box. It has six faces, eight vertices, and twelve edges.
The shape is defined by three dimensions: length, width and height, and is specified by the three sets of parallel and mutually perpendicular edges that form its six faces. The opposite faces of a rectangular prism are equal in area and parallel to each other. The opposite edges are also parallel and equal in length.
You can’t get a perfect match, but you can get pretty close, with dimensions of (1,8,9), (2,5,7), (3,4,6)
Hence, the dimensions of the rectangular prism would be (1,8,9), (2,5,7), and (3,4,6).
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Three times a number minus 6 is equal to two times the sum of a number and 8.
Write as a equation
what is the slope through the line of (-6, -3) and (-2, -8)
Answer:m=-5/4
Step-by-step explanation: The formula for finding slope is y1-y2 / x1-x2 so when plugging in these coordinates, you get -3-(-8)/-6-(-2). When simplified -3-(-8) is 5 and -6-(-2) is -4, so the answer is -5/4. You can also switch the numbers so its -8-(-3) / -2-(-6) and still get the same answer.
pls help me
Josh is the owner of CranBog, a Cranberry Bog in Massachusetts. Cranberry production at CranBod can be represented by the inequality y ≤ 150x - 3100
under normal climate conditions, where y
is the annual production of cranberries at CranBog, in thousands of pounds, and x
is the number of acres of land that produce cranberries.
The TRUE statements about the inequality y ≤ 150x - 3100 are:
A) For a solution to be viable, both x and y must be integers.E) The ordered pair (40, 2900) is a solution to the inequality and means that with 40 acres of land, CranBog can produce 2,900 (in thousands of) pounds of cranberries.What is inequality?Inequality refers to a mathematical statement claiming the inequality of two or more mathematical expressions.
The following types and inequality symbols represent inequalities:
Less than (<)Greater than (>)Not equal to (≠)Less than or equal to (≤)Greater than or equal to (≥).Check:
Ordered pairs (40, 2900)
y ≤ 150x - 3100
y ≤ 150(40) - 3100
y ≤ 6,000 - 3100
y ≤ 2900
Thus, the true statements about this inequality are Options A and E.
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The Institute of Medicine compared the United States to comparable high-income countries. Which of the following is accurate?
O The United States had lower rates of birth outcomes than other countries (including infant and maternal mortality),
O The United States had more years lost to alcohol and drug use than most other countries.
O The United States had longer life expectancy than most other countries.
O The United States had lower rates of adolescent pregnancy than most other countries.
The Institute of Medicine compared the United States to comparable high-income countries in terms of various health outcomes.
The findings revealed that the United States had lower rates of birth outcomes than other countries (including infant and maternal mortality). The US also life expectancy than most other countries, as well as more years lost to alcohol and drug use. Lastly, the US had lower rates of adolescent pregnancy than most other countries.
The Institute of Medicine also calculated the health gap between the US and other countries, which was defined as the difference between the health outcomes of the US and the health outcomes of the other countries. This gap was calculated by subtracting the US health outcome rate from the average of the other countries' health outcome rates. For example, to calculate the infant mortality gap, the infant mortality rate in the US (5.8 deaths per 1,000 live births in 2018) was subtracted from the average infant mortality rate of the other countries (3.5 deaths per 1,000 live births). This resulted in a health gap of 2.3 deaths per 1,000 live births.
Overall, the Institute of Medicine's comparison revealed that the US was lagging behind other countries in terms of various health outcomes.
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in an equilateral triangle the altitude is sqrt7 find the length of the sides
Answer:
Length of each side = 3.055
Step-by-step explanation:
The relationship between altitude h and side a of an equilateral triangle is
[tex]h = \dfrac{\sqrt{3} }{2} a\\\\\\\rightarrow a = \dfrac{ 2h}{{\sqrt{3} }}\\\\[/tex]
Given h = √7.
we get
[tex]a = \dfrac{2\sqrt{7} }{\sqrt{3} }\\\\a = 2 \sqrt{\dfrac{7}{3}}\\\\a = 2\times 1.5275\\\\a = 3.055\\\\[/tex]
Another way to express cis 75∘+cis 83∘+cis 91∘+⋯+cis 147∘
the value of theta in the given complex expression is equal to 16°.
Given, a number. [tex]rcis\theta, is[/tex] expressed by.
cis75° + cis83° + cis91°+.... + cis147°.
we have to find the value of angle in degrees.
The function cisA is a shorthand way of writing the equivalent expression cisA=cosA+i sinA
By definition: CisA=CosA+iSinA
This form simplifies complex arithmetic and allows for the study of complex analysis, as well as reduces the workload in writing the expressions.
now, we have to find the sum of the given expressions.
[tex]cis75+cis83+cis91+...+cis147 as, cis\theta=e^{i\theta}[/tex]
[tex]e^{75i}+e^{83i}+e^{91}+....+e^{147i}\\\\e^{\frac{75\pi}{180} }+e^{\frac{83\pi}{180} }+.....+e^{\frac{147\pi}{180} }[/tex]
on using geometric sum of the series we get,
[tex]Sum=\frac{e^{\frac{75i\pi}{180}}(1-e^{\frac{72i\pi}{180} ) }}{(1-e^{\frac{8i\pi}{180} })}\\ \\\theta=16[/tex]
the value of theta of the angle be 16 degree.
the complete question is.
The number cis 75 + cis 83 + cis91 +...+ cis 147 is expressed in the form r cis(theta), where 0 <= theta < 360.
Find theta in degrees.
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The solution of a system of equations is (3,2). One of the solutions in the system is 2x + 3y = 12. Write an equation in slope-intercept form that could be the second equation in the system.
y = -2/3x + 4 is an equation in slope-intercept form that could be the second equation in the system.
What are Systems of equations?simultaneous equations, a system of equations Two or more equations in algebra must be solved jointly (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a singular solution.
There are four methods for solving systems of equations: graphing, substitution, elimination, and matrices.
Given, The solution of a system of equations is (3,2). One of the solutions in the system is 2x + 3y = 12.
From the general formula of Slope intercept form:
y = mx + c
where,
m = slope
c = y-intercept of the equation
Thus in our case,
2x + 3y = 12
=> 3y = -2x + 12
=> y = -2/3x + 4
thus, the Slope of the line = -2/3
and another coordinate (0, 4)
Therefore, an equation in slope-intercept form that could be the second equation in the system is y = -2/3x + 4.
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The average mass of apple of 2 bags A and B is 6.4kg. Given that bag A contains 0.9kg of apple than bag B, find the mass of apple in bag B
Using the formula for the average value between two numbers, we will see that bag B weighs 11.9 kg
How to find the weight of bag B?If we have two values x and y, the average value between these two is given by the formula below.
average = (x + y)/2
Here we know that the average between the wheights of bags A and B is 6.4 kg, and A = 0.9kg
Then we can write the equation:
6.4kg = (B + 0.9kg)/2
We can solve that equation for B to get:
2*6.4kg = B + 0.9kg
12.8kg - 0.9kg = B
11.9kg = B
Bag B weighs 11.9 kilograms.
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