The circumference of a circle is equal to the total length of its boundary. The length of label is 143 / 7 cm. the correct answer is option D.
What is a circle ?A circle is a geometrical shape having all of its points equidistant from a fixed point known as the center.
The angle subtended by a circle is 360°.
Given that,
the radius of the circle r = 3 + 1 / 4
= 13 / 4 cm
The length of label is equivalent to the circumference of circle having r = 13 / 4 cm.
The circumference is given as,
C = 2π × r
=> C = 2 × 22 / 7 × 13 / 4
=> C = ( 11 × 13 ) / 7
=> C = 143 / 7.
Hence, the length of the label is given as 143 / 7 cm.
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Answer:
d
Step-by-step explanation:
because i said so
help meeeeeeeeeeee pleaseee rnnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
a) The number of students studying abroad in the year 2001 is; 150.38 thousand
b) The number of students studying abroad in the year 2018 is; 467.53 thousand
How to solve exponential growth functions?
An exponential growth or decay function is defined as a function that grows or shrinks at a constant percent growth rate.
We are given the equation as;
y = 123.1(1.069)ˣ
This equation models the number of students who studied abroad each year from 1998 to 2013
where;
y is the number of students from a certain country studying abroad
x is the number of years after 1998
a) In the year 2001, this is 3 years after 1998 and so we have;
y = 123.1(1.069)³
y = 150.38 thousand
b) In the year 2018, it will have been 20 years after 1998. Thus, we have;
y = 123.1(1.069)²⁰
y = 467.53 thousand
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Please help!!! 20 Points!! The total price of 6 pieces of drawing paper and 1 ballpoint pen at $0.70 is equal to the total price of a piece of drawing paper and a box of paints How much is the price of a piece of drawing paper?
Answer:
$4.21
Step-by-step explanation:
6*70+1=421
11.5 x 2.69 show your work
The answer of the given multiplication is, 30.935.
What is multiplication?
A mathematical formula that specifies the objects to be multiplied, known as a factor, produces a product. For instance, the product of x and is cdot, while the product of x and is 30.
Consider, the product
1 1. 5
x 2. 6 9
__________________
1 0 3 5
+ 6 9 0 0
+ 2 3 0 0 0
____________________
3 0 9 3 5
There is one after after decimal point in 11.5, and there are two digits after decimal point in 2.69
So, there are total three digits after decimal point.
Therefore, we place the decimal after 0.
Hence, the multiplication of given numbers is, 30.935
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A car with an initial velocity of 25 miles per hour begins to accelerate at a constant rate. The table shows the elapsed time after the car begins to accelerate and the velocity of the car at a particular time.
Which linear function best models the car's velocity, V(t), in terms of the elapsed time (t) after the car begins to accelerate?
Responses
Answer:
i need help please by german
The Quantity of an element is decaying over time such that the amount of material at
time is given by the funetion K (t) = 2000(0.9)^t+2. Write an equivalent
function of the form K (t) = ab^t
Answer:
Below
Step-by-step explanation:
= 2000 (.9)^2 (.9)^t
= 2000(.81)(.9)^t
= 1620 (.9)^t
Answer:
[tex]K(t)=1620(0.9)^{t}[/tex]
Step-by-step explanation:
Given function:
[tex]K(t)=2000(0.9)^{t+2}[/tex]
[tex]\textsf{Apply exponent rule} \quad a^{b+c}=a^b \cdot a^c:[/tex]
[tex]\implies K(t)=2000(0.9)^{t}\cdot(0.9)^2[/tex]
Simplify:
[tex]\implies K(t)=2000(0.9)^{t}\cdot0.81[/tex]
[tex]\implies K(t)=0.81 \cdot 2000(0.9)^{t}[/tex]
[tex]\implies K(t)=1620(0.9)^{t}[/tex]
a committee of three is chosen from a group of 13 people. how many different committees are possible if the following conditions apply?
There are total 246 ways to select a committee of 3 from a gorup of 13.
What is Combination?
A combination is a mathematical approach for determining the number of potential arrangements in a set of objects when the order of the selection is irrelevant. You can choose the components in any order in combinations.
Solution:
Given that,
Total Number of Applicants = 13
Total Seats Available for the Committee = 3
Since, the order of selection is not relevant in the given question we will use combination.
13C3 = 13! / (10! * 3!)
13C3 = 13*12*11*10!/(10! * 6)
13C3 = 286
This means there are total 246 ways to select a committee from a gorup of 13.
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During a one-month promotional campaign, Fran's Flix gave either a free DVD rental or a 12-serving box of microwave popcorn to new members. It cost the store $1 for each free rental and $2 for
each box of popcorn. In all, 50 new members were signed up and the store's cost for the incentives was $80. How many of each incentive were given away?
30 boxes of popcorn and 20 free DVD rentals were given away.
What is the solution to an equation?
In order to make the equation's equality true, the unknown variables must be given values as a solution. In other words, the definition of a solution is a value or set of values (one for each unknown) that, when used as a replacement for the unknowns, transforms the equation into equality.
let a variable represent the number of the highest-cost item (boxes of popcorn). If that is p, then the number of DVD rentals is (53-p) and the total cost is ...
2p +(50 -p) = 80
p = 80 -50 = 30 . . . . . . . boxes of popcorn
50-p= (50 -30) = 20 . . . DVD rentals
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f(x)=√x-2, find f-¹(x).
The inverse of the function is, [tex]f^-^1(x)=x^2+4x+4[/tex].
What is inverse of the function?
The inverse function of a function f in mathematics is a function that reverses the operation of f. If the inverse of f exists, it is denoted by f-1 and exists only if f is a bijective function.
Given that f(x) = √x - 2
We have to find the value of f-¹(x).
Let, y = √x - 2
Replace x with y.
⇒ x = √y - 2
Adding 2 on both sides,
x + 2 = √y - 2 + 2
x + 2 = √y
Taking square on both sides,
(x + 2)^2 = (√y)^2
x^2 + 4x + 4 = y
y = x^2 + 4x + 4
Rewrite y as .[tex]f^-^1(x)[/tex]
So, we get [tex]f^-^1(x)[/tex] = x^2 + 4x + 4
Hence, the inverse of the function is, [tex]f^-^1(x)=x^2+4x+4[/tex].
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12) Using the functions below, what is the
value of 2(h(-1)) - g(-4) in simplest form?
g(x) = 5x - 2
h(x) =4-x/5
Answer: 30.4
Step-by-step explanation:
After some work this is my final answer.
archaeologists plan to examine a sample of 2-meter-square plots near an ancient greek city for artifacts visible in the ground. they choose separate random samples of plots from floodplain, coast, foothills, and high hills. what kind of sample is this?
The given sample is stratified sampling with topology as the stratum variable.
Archaeologists plan to examine a sample of two-meter-square plots near an ancient Greek site for artifacts visible in the ground. They choose separate samples of plots from the floodplain, coast, foothills, and high hills. We need to find the kind of this sample.
It is not a simple random sample since we cannot include just floodplains in the sample, for example. As a result, not all feasible subsets have an equal chance of being picked. This is stratified sampling with topology as the stratum variable.
Statistics is the study of data gathering, organization, analysis, interpretation, and presentation. It is customary to begin with a statistical population or a statistical model to be researched when applying statistics to a scientific, industrial, or social problem.
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The markup on a restaurant is 250%. A meal costs 7.30 to produce, How much will the customer be charged before tax and tip?
The amount that the customer be charged before tax and tip is $25.55
Given,
The markup on a restaurant = 250%
The cost of a meal to produce = $7.30
We have to find the amount will the customer be charged before tax and tip;
The markup price = 250/100 × 7.30 = 5/2 × 7.30 = 2.5 × 7.30 = 18.25
The Markup price on a restaurant is $18.25
Now,
The amount that the customer be charged before tax and tip = The cost of a meal to produce + The markup price
= 7.30 + 18.25
= 25.55
That is,
The amount that the customer be charged before tax and tip is $25.55
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In Jayce's favorite video game, he collects stars to earn points. Today, he collected 80 silver stars and earned 160 points. He also collected 30 gold stars and earned 150 points. How many more points per star does Jayce earn from gold stars?
As a decimal or whole number
By taking some simple quotients, we will see that a gold star gives 3 points more than a silver star.
How many points the gold stars give?First, we know that 80 silver stars are equivalent to 160 points, to get the number of points that each star gives, we need to take the quotient between the number of points and the number of stars.
160/80 = 2
Each silver star gives 2 points.
We also know that 30 gold starts give 150 points, then:
150/30 = 5
Each gold star gives 5 points.
The difference is:
5 - 2 = 3
A gold star gives 3 points more than a silver star.
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help please digram shows a triangle
Answer:
s = 16
Step-by-step explanation:
4s+s+36+4s =180 The sum of the interior angles of a triangle is 180 Combine like terms.
9s + 36 =180 Subtract 36 from both sides
9s = 144 Divide both sides by 9+
s = 16
Answer:
s = 16
Step-by-step explanation:
the three angles of a triangle should add up to 180 degrees.
Write the first four terms of the sequence defined by the explicit rule f(n) = n2 - 5. Show all steps and reasoning.
The first four terms are -4 , -1 , 4, 11 respectively
What is s.eq.u.e.n.c.e?Sequence is the arrangement of set of number in a particular order.
A se.q.u.e.n.c.e. can be defined based on the number of terms.
The function f (n) =n^2-5, where n is the number of term
therefore, when n= 1, (first term)
f (n) = 1^2-5= -4
when n= 2 (second term)
f (n) = 2^2-5=4-5= -1
when n= 3 (Third term)
f (n)= 3^2-5=9-5= 4
when n = 4 (fourth term)
f (n)= 4^2-5=16-5= 11
therefore the first four term of the sequence are -4 , -1 , 4, 11 respectively
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Graph this inequality: y< – 1
The graph of the inequality y < -1
In the below, See the attachment
Given,
In the question:
The equation is :
y< -1
To graph the above equation:
What is graph explain?
Graph is a mathematical representation of a network and it describes the relationship between lines and points. A graph consists of some points and lines between them. The length of the lines and position of the points do not matter. Each object in a graph is called a node.
Now, According to the question:
y is less than -1
The graph will be :
In the below, See the attachment .
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Tonalli mixes 136 g of carbon dioxide with every 20 L of water.
Complete the table using equivalent ratios.
Water (L). Carbon dioxide (g)
20 136
1 ___
8 ___
PLEASEEEE help
i know i am saying this again
Answer: for the first it is not direct varition while for the second one it i s
Step-by-step explanation:
A snail moves 7/50 of a mile in 7/8 of an hour. If the snail continues at this pace, how far, in miles, does it move in one hour?
The number of miles it takes the snail to move for an hour is 25/4 miles
How to find the number of miles the snail moves?Number of miles the snail moves = 7/50 of a mileNumber of hours the snail moves = 7/8 of an hourhow far, in miles, does it move in one hour?
let number of miles = xEquate the ratio of number of miles to number of hours
7/50 : 7/8 = x : 1
7/50 ÷ 7/8 = x / 1
7/50 × 8/7 = x / 1
50/8 = x / 1
cross product50 × 1 = 8 × x
50 = 8x
divide both sides by 8
x = 50/8
x = 25/4 miles
In conclusion, the snail moves 25/4 miles when traveling for an hour.
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if you have 5 qualified candidates to fill the positions of president and vice president, how many ways can the positions be filled?
If you have 5 qualified candidates to fill the positions of president and vice president, then their have 20 ways to be fill the positions.
In the given question,
If you have 5 qualified candidates to fill the positions of president and vice president, then we have to find how many ways can the positions be filled.
We have total 5 qualified question.
Their have total 2 position president and vice president.
When the one position one of president filled then their one left 4 qualified candidate for the vice president position.
So the possible ways to fill the position is find by multiplying the 5 and 4. So
Possible ways=5*4
Possible ways=20
Hence, if you have 5 qualified candidates to fill the positions of president and vice president, then their have 20 ways to be fill the positions.
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The total cost for laundry service, in dollars, depends on the weight of the laundry, in pounds. This relationship is proportional, as it costs $20.70 for 23 pounds of laundry and $34.20 for 38 pounds of laundry.
In words, describe the graph of the proportional relationship.
A line from (0, 0) going through (20.70, 23) where the x-axis is labeled Weight (in pounds) and the y-axis is labeled Cost (in dollars)
A line from (0, 0) going through (23, 20.70) where the x-axis is labeled Cost (in dollars) and the y-axis is labeled Weight (in pounds)
A line from (0, 0) going through (38, 34.20) where the x-axis is labeled Weight (in pounds) and the y-axis is labeled Cost (in dollars)
A line from (0, 0) going through (38, 34.20) where the x-axis is labeled Cost (in dollars) and the y-axis is labeled Weight (in pounds)
The graph of the proportional relationship is
(c) A line from (0, 0) going through (38, 34.20) where the x-axis is labeled Weight (in pounds) and the y-axis is labeled Cost (in dollars)
What is Graph?The graph is simply a structured representation of the data. It aids in our comprehension of the data. The numerical information gathered through observation is referred to as data.
In a line graph, the information or data is represented as a series of markers, or dots, and is then connected to one another by a straight line.
Given:
It costs $20.70 for 23 pounds of laundry and $34.20 for 38 pounds of laundry.
which shows that
(x, y) = (20.70, 23) and (34.20, 38)
Where
x = Weight and y = Cost
So, The graph is a proportional graph which means that line passes through the origin
So, we have
(x, y) = (0, 0), (20.70, 23) and (34.20, 38)
Hence, the graph of the proportional relationship is (c)
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4. If N is the set of natural numbers that are factors of 16, choose the selection below that correctly shows
this set in roster form.
O{1, 2, 4, 8, 16)
O (2, 4, 6, 8, 10, 12, 14, 16}
O {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
O {2, 4, 8)
The set of factors of 16 is={1,2,4,8,16}.So option(1) is correct
Natural numbers are those that start with 1 and go on indefinitely. In other words, natural numbers are counting numbers that do not include 0 or any negative or fractional numbers. Natural numbers are numbers like 1, 6, 89, 345, and so on.
What exactly are the factors?
A factor is a number that divides another number with no remainder. In other words, if multiplying two whole numbers results in a product, the multiplied numbers are factors of the product because the product is divisible by them. There are two methods for locating factors: multiplication and division.
Given in the question that, N is the set of natural numbers that are factors of 16
factors of 16 are = 1,2,4,8,16
so the set of factors of 16 is={1,2,4,8,16}
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PLEASE PLEASE PLEASEEEE ANSWER
Answer:
I agree due to everything stated there everything is perpendicular and is equal to the each other.
Give brainliest if you like the answer!
inscribed in a circle is a quadrilateral having sides of lengths 25,~39,~5225, 39, 52, and 6060 taken consecutively. the diameter of this circle has length
The diameter of this circle has length of 65 when it is inscribed in a circle is a quadrilateral.
What is meant by diameter?The straight line that runs through the center of a round shape or object from one point on one edge to another: The diameter is twice as large as the radius. The pond is six feet across. Both definitions hold true for the diameter of a sphere.
We note that 25²+60²=65² and 39²+52²=65²
Let [tex]\bar{AB}[/tex]=25, [tex]\bar{BC}[/tex]=39, [tex]\bar{CD}[/tex]=52, [tex]\bar{DA}[/tex]=60
Let [tex]\bar{BD}[/tex]=x and ∠DAB=y
x²=25²+60²-3000cos(y)
x²=39²+52²-4056cos(180-y)
We obtain by performing some computation x²=4225-3000cos(y) and x²=4225-4056cos(y).
4056cos(y)=3000cos(180-y)
cos(180-y)=-cos(y)
So, by substituting we get 4056cos(y)= -3000cos(y)
cos(y)=0 or y=90.
∠BAD=90 and ∠BCD=90.
The diameter of a right triangle inscribed in a circle is the hypotenuse.
This means that the diameter is √4225=65
Therefore, the diameter of this circle has length of 65.
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Escherichia coli (e. Coli) bacteria are growing in a hamburger exponentially. Initially there are 100,000 bacteria. After 20 minutes there are 150,000. How many are there after an hour?.
After one hour, there would be 337,500 bacteria in the hamburger.
This problem involves exponential growth relation, which is as below:
[tex]P(t)=P_{o}*e^{rt}[/tex]
where, [tex]P_{o}[/tex] is the initial value (i.e. at t=0), P(t) is the value at time 't' and r is the growth rate.
Usually, one perceives growth as linear, which might seem logical in unspecified cases. But, when specified exponential growth, the scenario changes. The difference between linear and exponential growth is like the difference between velocity and acceleration.
In case of above stated problem; [tex]P_{o}[/tex]=100,000 and P(20)=150,000
For calculating r, we substitute values:
[tex]150,000=100,000*e^{r*20}\\e^{20r}=1.5\\20r=ln(1.5)\\r=0.0202733[/tex]
Now we have our growth rate. Using the same formula for t=60, we have:
[tex]P(60)=100,000*e^{0.0202733*60}\\P(60)=100,000*3.375\\P(60)=337,500[/tex]
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Need help for this question
Answer:
b) 6
Step-by-step explanation:
Given information,
→ P = (5x + 30)°
→ S = 80°
Forming the equation,
→ P + S = 140°
→ (5x + 30)° + 80° = 140°
Now the value of x will be,
→ (5x + 30)° + 80° = 140°
→ 5x + 110° = 140°
→ 5x = 140° - 110°
→ x = 30°/5
→ [ x = 6° ]
Hence, the value of x is 6.
Graph the polynomial function f(x) = x^3 + 3x^2 – 4x – 12 using its intercepts and end behavior
The graph of the polynomial f(x) is added as an attachment
How to plot the graph of the polynomial?From the question, the equation of the polynomial is given as
f(x) = x^3 + 3x^2 – 4x – 12
To start with, we need to represent the function of the polynomial properly
So, we have the following representation
f(x) = x³ + 3x² – 4x – 12
Solving further, we need to factorize the function
This gives
f(x) = x²(x + 3) - 4(x + 3)
Factor out x + 3
f(x) = (x² - 4)(x + 3)
Express as difference of two squares
f(x) = (x - 2)(x + 2)(x + 3)
When the above equation is solved, we have
x = 2, x = -2 or = -3
This means that the intercepts of the function are -3, -2 and 2
Next, we plot the polynomial function using the above intercepts and the end behavior
See attachment for the graph of the function
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PLEASE HURRY ILL GIVE ANYTHING!!
(Real-World Proportional Problems MC)
The time it takes to read 10 pages of a b(ook can be represented with the equation y equals 5.5 divided by 10 times x, where y represents the total time in minutes and x represents the number of pages read.
Determine how long it will take to read a book that has 305 pages.
105.5 minutes
167.75 minutes
305.89 minutes
554.55 minutes
The total time it will take to to read a book that has 305 pages is 167.75 minutes.
How to find how long it will take to read pages of book with equation?The time it takes to read 10 pages of a book can be represented with the equation y equals 5.5 divided by 10 times x, where y represents the total time in minutes and x represents the number of pages read.
Therefore, the equation is as follows
[tex]y = \frac{5.5}{10}x[/tex]
where
y = total time in minutesx = number of pages read.Hence, let's find how long it will take to read a book that has 305 pages.
Therefore,
[tex]y=\frac{5.5}{10}(305)[/tex]
[tex]y = \frac{1677.5}{10}[/tex]
y = 167.75 minutes
Therefore, it will take 167.75 minutes.
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Gabriel owns 27 fiction books and 23 nonfiction books. Each shelf can hold 8 books..
Answer: For fiction Gabriel needs about 3 shelves with an extra 4 more books. For nonfiction books it's the same with 3 shelves with 1 more to put.
Starter:
What is a factor?
What is a multiple?
Which is the odd number out of each list?
1. 16,32,40,52
2. 21,35, 62, 84
3. 24, 46, 84, 132
4. 18, 32, 48, 90
5. 16, 27, 54, 81
Main task:
Find the Highest Common Factor of these
numbers:
1. 18 and 30
2. 15 and 20
3. 16 and 24
4. 12 and 36
5. 20 and 30
6. 28 and 70
Find the Lowest Common Multiple of these
numbers
1. 6 and 7
2.4 and 6
3.5 and 8
4. 10 and 4
5. 16 and 5
6. 14 and 21
Factor:
A factor is a number that divides another number, leaving no remainder. In other words, if multiplying two whole numbers gives us a product, then the numbers we are multiplying are factors of the product because they are divisible by the product. There are two methods of finding factors: multiplication and division.
Multiple:
multiple in math are the numbers you get when you multiply a certain number by an integer. For example, multiples of 5 are: 10, 15, 20, 25, 30…etc. Multiples of 7 are: 14, 21, 28, 35, 42, 49…etc.
How to find hcf of two or more numbers :
Steps 1:
Find all the factors of each given number.
Step 2:
Find common factors of the given number.
Step 3:
The greatest of all the factors obtained in Step 2, is the required highest common factor (H.C.F).
I'm only writing the answers below as I already told how to find it.
Highest common factor:
1. The factors of 18 are: 1, 2, 3, 6, 9, 18
The factors of 20 are: 1, 2, 4, 5, 10, 20
Then the greatest common factor is 2.
2. The factors of 15 are: 1, 3, 5, 15
The factors of 15 are: 1, 3, 5, 15The factors of 20 are: 1, 2, 4, 5, 10, 20
The factors of 15 are: 1, 3, 5, 15The factors of 20 are: 1, 2, 4, 5, 10, 20Then the greatest common factor is 5.
3. 8
4. 12
5. 10
6. 14
How to find lcm. of numbers :
Step 1: Find the prime factors of the given numbers by repeated division method.
Step 2: Write the numbers in their exponent form. Find the product of only those prime factors that have the highest power.
Step 3: The product of these factors with the highest powers is the LCM of the given numbers.
I'm only writing the answers below as I already told how to find it.
Lowest common multiple :
1. 42
2. 12
3. 40
4. 20
5. 80
6. 42
hope it helps you..
A parallelogram is shown.
7.5 cm
Area = 62 cm²
Work out the perimeter of this parallelogram.
Optional working
6.2 cm
Answer:
cm
The perimeter of the parallelogram is 35 cm.
What is the perimeter of a parallelogram?The length of the continuous line that a parallelogram's boundary forms are considered to be its perimeter. The same unit applies to it as it does to its sides. A closed shape made up of four line segments is referred to as a quadrilateral. If the opposing sides of a quadrilateral are parallel and the same length, the shape is referred to as a parallelogram.
Given, the area of the parallelogram = 62 cm²
We know the area of the parallelogram = base × height
62 = b × 6.2 cm
b = 62/6.2
b = 10 cm
So, the perimeter of the parallelogram is given by
P = 7.5 + 10 + 7.5 + 10 cm
P = 35 cm
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