The area of the circle with a diameter of 20 inches is 100π square inches, and the circumference of the circle is 20π inches.
To determine the area and circumference of a circle with a diameter of 20 inches, you need to use the formulas for these measures.
A circle is a set of points that are equidistant from the center point, and the diameter of a circle is the longest line that can be drawn from one point on the circle to another while passing through the center point. The formulas for the area and circumference of a circle are as follows:
A = πr²C = πd
where A is the area of the circle, C is the circumference of the circle, r is the radius of the circle, d is the diameter of the circle, and π (pi) is a mathematical constant that approximates to 3.14.
To find the area of a circle with a diameter of 20 inches, you need to find the radius of the circle first. The radius is half of the diameter, so r = d/2 = 20/2 = 10 inches. Therefore, the area of the circle is:A = πr² = π(10)² = 100π square inches (rounded to two decimal places).
To find the circumference of a circle with a diameter of 20 inches, you can either use the formula C = πd or you can use the formula C = 2πr. Since you already know the diameter, let's use the first formula. C = πd = π(20) = 20π inches (rounded to two decimal places).
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Use the data from the dot plot below to answer the question.
How many students from this data sample have three siblings?
A. Three students have three siblings
B. One student has three siblings
C. Four students have three siblings
D. Two students have three siblings
5⁄8 ÷ 3⁄8 =________ pls help me
Answer:
1 [tex]\frac{2}{3}[/tex]
Step-by-step explanation:
Answer:
1 2/3
Step-by-step explanation:
First, you rewrite 5/8÷3/8 as a multiplication problem: 5/8*8/3. Now you simply multiply both numerators and denominators: 5x8/8x3 which equals 40/24. So your final answer will be 40/24 or 1 16/24 which equals 1 2/3.
Complete the following on lined paper. Show of your all work. 1. Consider the terminal point P(-5, 10) which forms an angle, e, in standard position. (a) Find the measure of the radius, r. (x, y) V 0 (b) Find the measure of angle 0. (c) Find a positive angle coterminal with 0. (d) Find a negative angle coterminal with 0. (e) Find an angle with the same value of cos 0, but is not coterminal with 8.
(a) The measure of the radius, r, is 5√5. (b) The measure of angle θ is approximately -63.43 degrees or approximately 296.57 degrees.
(c) A positive angle coterminal with θ is approximately 656.57 degrees.
(d) A negative angle coterminal with θ is approximately -63.43 degrees.
(e) An angle with the same value of cos θ but not coterminal with θ can be found using arccos(cos θ) + 360 degrees.
(a) To find the measure of the radius (r), we can use the distance formula, which states that the distance between two points (x1, y1) and (x2, y2) is given by the formula [tex]\sqrt{((x2 - x1)^2 + (y2 - y1)^2)}[/tex]. In this case, the coordinates of the point P(-5, 10) represent the values (x1, y1), and the origin (0, 0) represents the values (x2, y2). Plugging in the values, we get [tex]\sqrt{((-5 - 0)^2 + (10 - 0)^2) }[/tex]= sqrt(25 + 100) = sqrt(125) = 5*sqrt(5). So, the measure of the radius is 5*√(5).
(b) To find the measure of angle 0, we can use inverse trigonometric functions. Since the coordinates of the point P(-5, 10) correspond to the values of x and y, we can use the arctan function to find the angle. The formula for finding the angle in standard position is given by arctan(y/x). Plugging in the values, we get arctan(10/-5) = arctan(-2). Using a calculator, we find that the measure of angle 0 is approximately -63.43 degrees or approximately 296.57 degrees (since the angle is in the second quadrant, we add 360 degrees to get a positive coterminal angle).
(c) To find a positive angle coterminal with 0, we can add multiples of 360 degrees to the angle. In this case, adding 360 degrees to the angle of approximately 296.57 degrees, we get a positive coterminal angle of approximately 656.57 degrees.
(d) To find a negative angle coterminal with 0, we can subtract multiples of 360 degrees from the angle. In this case, subtracting 360 degrees from the angle of approximately 296.57 degrees, we get a negative coterminal angle of approximately -63.43 degrees.
(e) To find an angle with the same value of cos 0 but not coterminal with 0, we can use the inverse cosine function. The formula for finding the angle is given by arccos(cos 0). Since cosine is a periodic function, angles with the same value of cosine repeat every 360 degrees. Therefore, we can find an angle by using arccos(cos 0) + 360 degrees.
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A 13 meter ladder is leaning against a wall. It reaches 12 meters up the wall How far is the base of the ladder from the base of the wal
Answer:
5
Step-by-step explanation:
Pythagorean Theorem. The 13-meter ladder is leaning against a wall, so it's the hypotenuse.
It reaches 12 meters up, so 12 is one leg.
[tex]a^{2} +b^{2}=c^{2}[/tex]
[tex]a^{2}+12^{2}=13^{2}[/tex]
[tex]a^{2}+144=169[/tex]
[tex]a^{2}=25[/tex]
a = 5
Each letter in the word THEORETICAL is placed on a separate piece of paper and placed in a
hat. A letter is chosen at random from the hat. What are the odds against pulling a T?
Answer:
sorry men this is not the answer
Step-by-step explanation
wuestion
A restaurant customer left $1.05 as a tip. The tax was 6% and the tip was 15% of the cost including
tax.
What was the total bill?
Plz help due at 11:59
I will mark right answer brainliest
The probability of having a pet is 40%, if you knew that anyone
who has a pet visits a vet (vet means animals' doctor)
with probability =90%. Then the probability of having a pet and
visiting a vet is
The probability of both having a pet and visiting a vet is 0.36 or 36%.
To find the probability of both having a pet and visiting a vet, we multiply the probability of having a pet by the probability of visiting a vet given that the person has a pet.
Let:
P(pet) = probability of having a pet = 40% = 0.40
P(vet | pet) = probability of visiting a vet given that the person has a pet = 90% = 0.90
The probability of having a pet and visiting a vet is given by:
P(pet and vet) = P(pet) * P(vet | pet)
P(pet and vet) = 0.40 * 0.90
P(pet and vet) = 0.36
Therefore, the probability of both having a pet and visiting a vet is 0.36 or 36%.
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1: = (3,2,4) m = + +
2: = (2,3,1) = (4,4,1)
(a) Create Vector and Parametric forms of the equations for
lines 1 and 2
In line 1, the position vector is (3, 2, 4), and the direction vector is (1, 1, 1). By varying the parameter t, we can obtain different points on the line.
In line 2, the position vector is (2, 3, 1), and the direction vector is (4, 4, 1). By varying the parameter s, we can obtain different points on this line.
The vector form and parametric form of the equations for lines 1 and 2 are as follows:
Vector form of line 1:
r = (3, 2, 4) + t(1, 1, 1)
Parametric form of line 1:
x = 3 + t
y = 2 + t
z = 4 + t
Vector form of line 2:
r = (2, 3, 1) + s(4, 4, 1)
Parametric form of line 2:
x = 2 + 4s
y = 3 + 4s
z = 1 + s
The vector form of a line represents the line in terms of a position vector r and a parameter t or s. The position vector r gives a point on the line, and the parameter t or s determines the location of other points on the line.
In line 1, the position vector is (3, 2, 4), and the direction vector is (1, 1, 1). By varying the parameter t, we can obtain different points on the line.
Similarly, in line 2, the position vector is (2, 3, 1), and the direction vector is (4, 4, 1). By varying the parameter s, we can obtain different points on this line.
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PLEASE HELPPPPPPPPPPPPP
Answer:
with what??????????????
A Ferris wheel car moves from point C to point D on the circle shown below:
Circle A is shown with points C and D on the circle and the central angle C A D marked 42 degrees. The diameter is 30 feet.
HELP NOW!! 100 POINTS!!! What is the arc length the car traveled, to the nearest hundredth?
7.91 feet
8.32 feet
10.99 feet
11.89 feet
Answer:
10.99
Step-by-step explanation:
Took the test and it said it was this one :)
The arc length of the car traveled, to the nearest hundredth is 10.99feet
The formula for calculating the length of an arc is expressed as:
L = theta/360 × 2pi r
Given that
Radius r = d/2 = 30/2 =15ft
theta = 42 degrees
pi = 3.14
Substitute the given values into the formula as shown
L = 42/360×2(3.14)(15)
L = 42/360×94.2
L = 3956.4/360
L = 10.99feet
This shows that the arc length of the car traveled, to the nearest hundredth is 10.99feet
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Given the arithmetic sequence of -21,-6,9,24,... , find an explicit rule for the nth term
Answer:
n = -21 + 15(n-1)
Can someone help me with this. Will Mark brainliest. Need answer and explanations/work. Thank you.
Answer:
cosine of angle a = 8/17
Step-by-step explanation:
Hello there!
Remember these are the trigonometric ratios
SOC CAH TOA
Sine = Opposite over Hypotenuse (SOH)
Cosine = Adjacent over Hypotenuse (CAH)
Tangent = Opposite over Adjacent (TOA)
And we are asked to find the Cosine of angle A
Remember cosine is adjacent over hypotenuse
Hypotenuse - The longest side
Adjacent - the side that's not the hypotenuse nor the opposite
The adjacent side length of angle A is equal to 8 and the hypotenuse is equal to 17
so the cosine of angle a = 8/17
Which of the following numeric measures would be most likely to produce invalid statistical analysis? A) Analysis of patients' blood pressures in mmHg B) Pain rating as: none = 0; slight = 1; much = 2 C) Assessment of oxygen saturation in percentage D) Analysis of neonatal birthweight in kilograms
The most likely numeric measure to produce invalid statistical analysis would be Pain rating as: none = 0; slight = 1; much = 2.
This is because assigning numerical values to categorical data in an arbitrary manner may not accurately represent the true nature of the variable. The assigned values of 0, 1, and 2 may not reflect the actual differences in pain intensity between the categories.
Statistical analysis requires meaningful and quantitative data, and converting qualitative variables into numerical values without a clear and consistent measurement scale can lead to misleading or invalid results. Therefore, option B) would be the most likely to produce invalid statistical analysis.
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The math teachers decided to throw a party. One teacher bought 7 cookies and 2 ice cream bars for $10.95. Another teacher bought 4 cookies and 3 ice cream bars for $10.25 . How much did one cookie and one ice cream bar cost, individually?
Answer:
0.95, 2.15
Step-by-step explanation:
cookie-x
ice bar-y
7x+2y=10.95 (*3)
4x+3y=10.25 (*2)
21x+6y=32.85
8x+6y=20.5
21x-8x=32.85-20.5=12.35
13x=12.35
x=0.95
2y=10.95-7*0.95=4.3
y=2.15
pls help .. i will mark brainliest !
Answer:
Option 2, d; corresponding
Step-by-step explanation:
since 6 and 18 are on the same line (line d) and is on the same spot, they are considerd corresponding.
Solve the following quadratic equation for all values of xx in simplest form. 16+2x²=30
Help me pleaseee!!!!!!
Answer:
8 or 9
Step-by-step explanation:
44/15 converted into a mixed number (convert a fraction into a decimal before converting it into a mixed number)
Answer:
cgal to the store with me for the wounds on the number and the kids to today because I'm so 4
fill in the blank.one dimension, ________blank, is used to classify social media and is shown in figure 20-1 on the x-axis, ranging from "words" to "animation."
One dimension, called "media richness," is used to classify social media and is shown on the x-axis of Figure 20-1. It ranges from "words" to "animation" and represents the level of interactivity and information.
In the context of social media, the concept of media richness refers to the degree of richness or complexity in the communication channel. It is a measure of the ability of a medium to convey information effectively, facilitate understanding, and support interaction between users.
Media richness is influenced by factors such as the presence of nonverbal cues, immediate feedback, personalization, and the capacity for multiple communication channels. Figure 20-1 likely represents a graphical representation or classification of social media based on their media richness.
The x-axis of the figure represents the continuum of media richness, ranging from "words" to "animation." At one end of the spectrum, "words" represent text-based communication platforms that primarily rely on written content. As we move towards the other end, "animation" represents media that incorporate rich visual and interactive elements such as videos, graphics, and multimedia features.
By placing different social media platforms along this dimension, Figure 20-1 provides a visual representation of their relative media richness levels. It helps in understanding the varying capabilities and characteristics of different social media platforms and their potential for communication, engagement, and information sharing.
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Using the Bisection Method on the interval [-1, 7], how many iterations are required to guarantee a maximum error, e = 0.01?
To guarantee a maximum error of e = 0.01 using the Bisection Method on the interval [-1, 7], approximately 8 iterations are required.
The Bisection Method is an iterative numerical method used to find the root of a continuous function within a given interval. It repeatedly bisects the interval and determines in which subinterval the root lies, based on the sign change of the function. The process continues until the desired accuracy is achieved.
In this case, the interval is [-1, 7] and the maximum error allowed is e = 0.01. The number of iterations required can be determined by finding the number of times the interval can be halved until its length becomes less than or equal to the maximum error.
Initially, the length of the interval is 7 - (-1) = 8. To achieve an error of 0.01, the interval needs to be halved 3 times. After each halving, the length of the interval is reduced by a factor of 1/2. Thus, after 3 iterations, the length becomes 8 * (1/2)^3 = 1.
Since the length of the interval is now less than the maximum error, we can conclude that approximately 8 iterations are required to guarantee a maximum error of 0.01 using the Bisection Method on the interval [-1, 7].
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PLEASE HELP ME I NEED HELP FAST
What is 385 divided by 48
Answer:
the answer is
Step-by-step explanation:
8.0208333333
Let T be a linear transformation given by (v) = Av . A = [2 1 3, 1 1 0,0 1 -3] a) Basis for the kernel of T b) Basis for the range of T. c) The rank of T. d) The nullity of T.
(a) The basis for the kernel of T is {(-1, 1, 1)}. (b) The basis for the range of T is {(2, 1, 0), (1, 1, 1)}. (c) The rank of T is 2. (d) The nullity of T is 1.
(a) To find the basis for the kernel of T, we need to solve the equation T(v) = 0. This is equivalent to finding the null space of the matrix A. By performing row reduction on A, we find that the basis for the kernel is {(-1, 1, 1)}.
(b) The range of T is the set of all possible outputs of T. To find the basis for the range, we can consider the columns of A that correspond to the pivot positions after row reduction. In this case, the columns {2, 1} and {1, 1} correspond to the pivot positions, so the basis for the range is {(2, 1, 0), (1, 1, 1)}.
(c) The rank of T is the dimension of the range, which is the number of linearly independent vectors in the basis for the range. In this case, the rank of T is 2.
(d) The nullity of T is the dimension of the kernel, which is the number of linearly independent vectors in the basis for the kernel. In this case, the nullity of T is 1.
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a chocolate company selects 800 random packages to check their weight. It finds that 12 packages have an incorrect weight. How many packages out of 4000 should the company predict to have the incorrect weight.
Answer:
1.5% of 4000 or 60
Step-by-step explanation:
Can someone pleaseeee help and if you’re correct i’ll give brainliest
Answer C
Step-by-step explanation:
the Question is on the image
Can you construct a triangle that has side lengths 4 m, 5 m, and 9 m? yes no
Answer:
Yes
Step-by-step explanation:
A triangle can have any side lengths as long as they all touch to make a triangle
Answer:
yes
Step-by-step explanation:
you just had to divide then subtract
Please help me with this test I’m so bad at math
Answer:
4 is 13.75 and 5 is 14.704
Step-by-step explanation:
PLS HELP! I'M SO STUCK!!
Answer:
E
Step-by-step explanation:
i just kinda figured it out
Someone plz help me giving brainliest
Answer
Use the fact that 45 times 1/9 = 5. Them multiply by 8 to get the answer, 40.
Step-by-step explanation: