A triangle has sides 3 cm, 5cm, and 7cm. Which of the following is true?
Group of answer choices
The interior angles of the triangle are equal.
The interior angles of the triangle add to 360 degrees.
The triangle is isosceles.
The interior angles of the triangle are all different measures.
Answers
Answer:
l think
The interior angles of the triangle are all different measures
Related Questions
Which of the following operations is true regarding relative frequency distributions? Multiple choice question. No two classes can have the same relative frequency. The relative frequency is found by dividing the class frequencies by the total number of observations. The sum of the relative frequencies must be less than 1. The sum of the relative frequencies is equal to the number of observations.
Answers
Answer:
The relative frequency is found by dividing the class frequencies by the total number of observations
Step-by-step explanation:
Relative frequency measures how often a value appears relative to the sum of the total values.
An example of how relative frequency is calculated
Here are the scores and frequency of students in a maths test
Scores (classes) Frequency Relative frequency
0 - 20 10 10 / 50 = 0.2
21 - 40 15 15 / 50 = 0.3
41 - 60 10 10 / 50 = 0.2
61 - 80 5 5 / 50 = 0.1
81 - 100 10 10 / 50 = 0.2
50 1
From the above example, it can be seen that :
two or more classes can have the same relative frequencyThe relative frequency is found by dividing the class frequencies by the total number of observations. The sum of the relative frequencies must be equal to one The sum of the frequencies and not the relative frequencies is equal to the number of observations.
A parachutist jumps from a plane 13,200 feet above the earth. If she landed in 3
minutes, what was her average speed in miles per hour?
Answers
Answer:
50 miles per hour
A bee flies at feet per second directly to a flowerbed from its hive. The bee stays at the flowerbed for minutes, and then flies directly back to the hive at feet per second. It is away from the hive for a total of minutes. a. What equation can you use to find the distance of the flowerbed from the hive? b. How far is the flowerbed from the hive?
Answers
Answer:
Step-by-step explanation:
The question is incomplete. Here is the complete question.
A bee flies at 12 feet per second directly to a flowerbed from its hive. The bee stays at the flowerbed for 14 minutes, and then flies directly back to the hive at 8 feet per second. It is away from the hive for a total of 18 minutes. A. Write the equation. Let d be the distance of the flowerbed from the hive. B. how far away is the hive from the flower bed.
First we need to calculate the time taken by the bee to fly to a flowerbird to its hive using the formula;
Speed = Distance/Time
Time = Distance/Speed
If a bee flies at 12 feet per second directly to a flowerbed from its hive, then the time taken by the bee is expressed as;
t1 = d/12 ....... 1
If the bee then flies directly back to the hive at 8 feet per second, the time taken by the bird will be:
t2 = d/8 ....... 2
Total time taken by the bee to and fro will be the sum total of both times;
t1+t2 = d/12+d/8
t11+t2 = 2d+3d/24
t1+t2 = 5d/24 ........ 3
If the bee stays at the bee stays at the flowerbed for 14 minute and away from the hive for 18minutes, the total time used by the bird during the journey will be 18-14 = 4 minutes
converting 4 minutes to seconds
4 minutes = 4*60 = 240seconds
The equation that can be used to find the distance of the flowerbed from the hive is gotten by equating equation 3 to the total time used by the bird during the journey i.e;
5d/24 = 240
5d = 24*240
5d = 5760
b) To know how far is the flowerbed from the hive, we will solve the resulting equation in a for the value of d as shown
Given 5d = 5760
Divide both sides by 5
5d/5 = 5760/5
d = 1152ft
Hence the distance of the flowerbed from the hive is 1152ft
Simplify (2^3)^-2
A. -1/64
B. 1/64
C. 2
D. 64
Answers
Answer:
B, 1/64
Step-by-step explanation:
\(2^{3}\) = 8
\(8^{-2}\) = \(\frac{1}{8^2}\) = \(\frac{1}{64}\)
Answer:
B. 1/64
Step-by-step explanation:
Got it right on the assignment
y = 2x + 7
y - 2x = 7
Is it no solution, exactly one solution, or infinitely many solutions
PLEASE HELPPPPPP PLSSSS
Answers
Answer:
Infinite solutions
Step-by-step explanation:
you add 2x to both sides of the bottom equation and then BAM they are coinciding
The path r(t)=(t) i + ( + 7) ; describes motion on the parabola y=x² + 7. Find the particle's velocity and acceleration vectors at t= 1, and sketch them as vectors on the curve. The velocity vector a
Answers
The velocity vector points in the direction of the tangent line to the curve at t=1, and the acceleration vector points in the direction of the curvature of the curve at that point.
We can find the velocity vector by taking the derivative of r(t):
v(t) = r'(t) = i + 2t j
At t = 1, the velocity vector is v(1) = i + 2j.
To find the acceleration vector, we take the second derivative of r(t):
a(t) = r''(t) = 2j
At t = 1, the acceleration vector is a(1) = 2j.
To sketch these vectors on the curve, we first plot the point r(1) = i + 8. Then, we draw the velocity vector i + 2j starting from this point, and the acceleration vector 2j starting from the same point.
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Show 28 as tens and ones
Answers
Which of the following are solutions to the inequality -7x+14 greater than -3x-6? Select all that apply
a. -10
b. 10
c. -5
d. 5
e. -3
f. 3
g. 0
Answers
Answer:
a-10
Step-by-step explanation:
A table of values of a function f with continuous gradient is given. Findstudent submitted image, transcription available belowC ∇f · dr, where C has the parametric equations below. x = t4 + 1, y = t5 + t ,0 ≤ t ≤ 1
x/y 0 1 2
0 1 7 3
1 3 5 9
2 6 1 6
Answers
The value of the line integral ∫C ∇f · dr along the curve C is 13/6.
Here, we have to evaluate the line integral ∫C ∇f · dr, where C has the parametric equations \(x = t^4 + 1, y = t^5 + t\), and 0 ≤ t ≤ 1,
we need to find the gradient of the function f and then compute the dot product with the differential vector dr.
First, let's find the gradient of the function f from the table of values:
x/y 0 1 2
0 1 7 3
1 3 5 9
2 6 1 6
We have the values of f at different points (x, y) in the table:
f(0, 0) = 1
f(1, 0) = 3
f(2, 0) = 6
f(0, 1) = 7
f(1, 1) = 5
f(2, 1) = 1
f(0, 2) = 3
f(1, 2) = 9
f(2, 2) = 6
Now, let's find the gradient of f with respect to x and y:
∇f = (∂f/∂x) i + (∂f/∂y) j
To find the partial derivatives, we can use finite difference approximations:
∂f/∂x ≈ (f(x+1, y) - f(x-1, y)) / 2
∂f/∂y ≈ (f(x, y+1) - f(x, y-1)) / 2
Now, we can calculate the gradient at each point:
∇f(0, 0) = (∂f/∂x)_0 i + (∂f/∂y)_0 j
≈ (f(1, 0) - f(-1, 0)) / 2 i + (f(0, 1) - f(0, -1)) / 2 j
≈ (3 - 1) / 2 i + (7 - 1) / 2 j
≈ 1 i + 3 j
∇f(1, 0) = (∂f/∂x)_1 i + (∂f/∂y)_0 j
≈ (f(2, 0) - f(0, 0)) / 2 i + (f(1, 1) - f(1, -1)) / 2 j
≈ (6 - 1) / 2 i + (5 - 0) / 2 j
≈ 2.5 i + 2.5 j
∇f(2, 0) = (∂f/∂x)_2 i + (∂f/∂y)_0 j
≈ (f(3, 0) - f(1, 0)) / 2 i + (f(2, 1) - f(2, -1)) / 2 j
≈ (3 - 6) / 2 i + (1 - 0) / 2 j
≈ -1.5 i + 0.5 j
∇f(0, 1) = (∂f/∂x)_0 i + (∂f/∂y)_1 j
≈ (f(1, 1) - f(-1, 1)) / 2 i + (f(0, 2) - f(0, 0)) / 2 j
≈ (5 - 7) / 2 i + (3 - 1) / 2 j
≈ -1 i + 1 j
∇f(1, 1) = (∂f/∂x)_1 i + (∂f/∂y)_1 j
≈ (f(2, 1) - f(0, 1)) / 2 i + (f(1, 2) - f(1, 0)) / 2 j
≈ (1 - 5) / 2 i + (9 - 3) / 2 j
≈ -2 i + 3 j
∇f(2, 1) = (∂f/∂x)_2 i + (∂f/∂y)_1 j
≈ (f(3, 1) - f(1, 1)) / 2 i + (f(2, 2) - f(2, 0)) / 2 j
≈ (6 - 1) / 2 i + (6 - 5) / 2 j
≈ 2.5 i + 0.5 j
∇f(0, 2) = (∂f/∂x)_0 i + (∂f/∂y)_2 j
≈ (f(1, 2) - f(-1, 2)) / 2 i + (f(0, 3) - f(0, 1)) / 2 j
≈ (1 - 6) / 2 i + (0 - 3) / 2 j
≈ -2.5 i - 1.5 j
∇f(1, 2) = (∂f/∂x)_1 i + (∂f/∂y)_2 j
≈ (f(2, 2) - f(0, 2)) / 2 i + (f(1, 3) - f(1, 1)) / 2 j
≈ (6 - 1) / 2 i + (9 - 5) / 2 j
≈ 2.5 i + 2 j
∇f(2, 2) = (∂f/∂x)_2 i + (∂f/∂y)_2 j
≈ (f(3, 2) - f(1, 2)) / 2 i + (f(2, 3) - f(2, 1)) / 2 j
≈ (6 - 1) / 2 i + (6 - 5) / 2 j
≈ 2.5 i + 0.5 j
Now that we have the gradient ∇f at each point (x, y), we can compute the line integral along the curve C:
∫C ∇f · dr = ∫(0 to 1) ∇f · dr
The differential vector dr in cylindrical coordinates is given by:
dr = dx i + dy j
= (dx/dt) dt i + (dy/dt) dt j
= \((4t^3 dt) i + (5t^4 + dt) j\)
Now, compute the dot product ∇f · dr and integrate along the curve C:
∫C ∇f · dr = ∫(0 to 1) ∇f · dr
= ∫(0 to 1) (∇f · \((4t^3 dt) i\) + ∇f · \((5t^4 + dt) j\))
= ∫(0 to 1) (\(4t^3\) ∇f · i + (\(5t^4 + 1\)) ∇f · j) dt
Now, substitute the values of ∇f at each point (x, y):
∫C ∇f · dr = ∫(0 to 1) (\(4t^3\) (1) + (\(5t^4 + 1\)) (t)) dt
= ∫(0 to 1) \((4t^3 + 5t^5 + t)\) dt
Now, integrate with respect to t from 0 to 1:
∫C ∇f · dr = [\(t^4 + (5/6)t^6 + (1/2)t^2\)] |_(0 to 1)
∫C ∇f · dr = (1 + 5/6 + 1/2) - (0 + 0 + 0)
∫C ∇f · dr = (13/6)
Therefore, the value of the line integral ∫C ∇f · dr along the curve C is 13/6.
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Select the correct answer from each drop-down menu.
The function y=
is
function, and the function y =
Reset
Next
secz
H
is
function.
Answers
The function y = x/(tan x) is an even function, and the function y = (sec x)/x is an odd function.
What are even and odd functions?Even and odd functions are classifications of functions based on their symmetry properties.
1. Even Function: An even function is symmetric with respect to the y-axis or the vertical axis. Mathematically, a function f(x) is even if and only if f(-x) = f(x) for all values of x in its domain. Geometrically, this means that the graph of an even function is symmetric with respect to the y-axis. Examples of even functions include f(x) = x^2 and f(x) = cos(x).
2. Odd Function: An odd function is symmetric with respect to the origin or the point (0,0). Mathematically, a function f(x) is odd if and only if f(-x) = -f(x) for all values of x in its domain. Geometrically, this means that the graph of an odd function is symmetric with respect to the origin. Examples of odd functions include f(x) = x^3 and f(x) = sin(x).
In the given context, the function y = x/(tan x) is an even function because replacing x with -x in the function results in the same expression. On the other hand, the function y = (sec x)/x is an odd function because replacing x with -x changes the sign of the expression.
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Could somebody help me with this problem
Answers
Answer:
72.8 cm³
Step-by-step explanation:
The relevant formula is ...
V = Bh
Using the given values, you find the volume to be ...
V = (10.4 cm²)(7 cm) = 72.8 cm³
A movie is rated PG13 meaning that one must be at least 13-years old to watch the movie. The sign in the lobby of the theater reads
PG13 Viewers
must be s 13
Nami thinks the sign is wrong, but her friend Tai disagrees and finds nothing wrong with the sign. Who is correct and why?
Answers
Answer:
Step-by-step explanation:
well it decides on your parents but yeah tai is right pg 13 means 13 years old and.
TAI IS CORRECT BECUASE PG-13: Parents Strongly Cautioned, Some Material May Be Inappropriate for Children Under 13. This rating is a stronger caution for parents that content included may not be appropriate for children under 13 (pre-teen ages). This may include stronger language, extended violence or sexual situations and drug-use, and sex
-30÷5=
bunun cevabı 6 mı??
Answers
Answer:
-6
Step-by-step explanation:
-30÷5=-6
this is the ans
Plz answer this as soon as possible it’s my hw I have to submit it tomorrow.
Answers
Answer:
43
Step-by-step explanation:
-2+3×15
45-2
43 is the answer
High intensity fatigue involves Group of answer choices All choices are correct Two choices are correct Pi precipiating Ca2 , making it unavailable for troponin Buildup of H which accelerates the activity of the myosin ATPase Impaired action potential firing from the alpha motor neuron
Answers
High intensity fatigue involves the combination of impaired action potential firing from the alpha motor neuron and the buildup of H+ ions which accelerates the activity of the myosin ATPase.
High intensity fatigue occurs when the muscles are subjected to intense or prolonged activity, leading to a decrease in their ability to generate force. Several factors contribute to high intensity fatigue, and two of them are impaired action potential firing from the alpha motor neuron and the buildup of H+ ions. Impaired action potential firing from the alpha motor neuron refers to a decrease in the ability of the nerve impulses to differentiate stimulate muscle contraction.
This can result in reduced muscle activation and force production during high-intensity activities. Together, impaired action potential firing and the buildup of H+ ions contribute to high intensity fatigue by reducing muscle activation and interfering with the normal functioning of muscle fibers.
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Which statement is true about the quadratic equation 8x2 − 5x + 3 = 0? The constant term is 8.
Answers
Answer:
false
Step-by-step explanation:
the constant term is 3 not 8
hope this helps
assume that the average sat score of first year ucf students is 1175 with a standard deviation of 120 and that the distribution of their sat scores is bell-shaped symmetric. find the minimum score of top 2.5% students.
Answers
To find the minimum score of the top 2.5% of students, we need to calculate the z-score corresponding to the 97.5th percentile and then convert it back to the original SAT score scale.
First, let's calculate the z-score using the formula:
z = (x - μ) / σ
where x is the SAT score, μ is the mean (1175), and σ is the standard deviation (120).
To find the z-score corresponding to the 97.5th percentile, we need to find the z-score value that leaves 2.5% in the tail of the distribution (to the right).
Using a standard normal distribution table or a statistical calculator, we find that the z-score corresponding to the 97.5th percentile is approximately 1.96.
Now we can solve for x (the SAT score) in the z-score formula:
1.96 = (x - 1175) / 120
Multiply both sides by 120:
1.96 * 120 = x - 1175
235.2 = x - 1175
Add 1175 to both sides:
235.2 + 1175 = x
1410.2 = x
Therefore, the minimum score of the top 2.5% of students is approximately 1410.
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Please help asap! What are the coordinates for the graph?
Answers
Answer:
(-5,5) and (5,5)
Step-by-step explanation:
Answer:
-5,5 5,5
Step-by-step explanation:
The diameter of a planet at its equator is 5110 kilometers Estimate using scientific notation
Answers
Answer:
5.11 × 10^3 km
Step-by-step explanation:
5,110 km ÷ 1,000 = 5.11 × 10^3 km
Therefore, the diameter of the planet at its equator in scientific notation is 5.11 × 10^3 km.
Two vertices of a right triangle have coordinates (3, 7) and (3, 10). The segment that connects these points is a leg of the triangle
Which set of coordinates for the third vertex would create a right triangle?
O (4,4)
O (7,8)
O (8,7)
O (4,8)
Answers
Answer:
8,7
Step-by-step explanation:
i hope this helps!
Find each product.
(5-x2+2)(-3)
PLEASE HELP!!! ASAP!!!
Answers
Answer:
\(3x^2 - 21\) (did you mean for the equation to be \((5 - x^2 + 2) \cdot -3\)?)
Step-by-step explanation:
Multiplying -3 by each term:
\(-3 \cdot 5 = -15\)
\(-x^2 \cdot -3 = 3x^2\)
\(-3 \cdot 2 = -6\)
\(-15-6 = -21\)
So the equation comes out to \(3x^2 - 21\) .
Hope this helped!
Mike has his birthday in june,the date is a multiple of 4,the date is also a multiple of 10,what is the date of mike is birthday. show the working
Answers
This is because 20 is a multiple of 4, and it’s also a multiple of 10.
4x5=20
10x2=20
Hope this helps!
Multiple of 10 = 10, 20, 30, 40 …
The common number between the two multiples and also is within 30 days is 20
Therefore 20 is the answer
a fractionating column has an hetp of 2 in plate if the column has 12 theoretical plates how long in inches is it g
Answers
The height of a theoretical plate is usually assumed to be about 18 inches. So, 12 theoretical plates would be about 216 inches (12 x 18 = 216).
A fractionating column is used to separate different components of a mixture by fractional distillation. The height equivalent to a theoretical plate (HETP) is a measure of how efficient a particular fractionating column is. The HETP is typically measured in terms of the number of theoretical plates in a particular column. If the HETP of a column is 2 in plate, then it means that the column has two theoretical plates. To calculate the length of a fractionating column with twelve theoretical plates, we can use the formula: Length = HETP x Number of theoretical plates. In this case, the length would be 12 x 2 = 24 inches.
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For what value of y does 125=(1/25)^y-1
O5/2
O-2
O-1
0-1/2
Answers
Answer:
ans is option c that is -1
Step-by-step explanation:
for complete step look at provided solution
of 100 students surveyed, 90 chose math what percent chose math
please help with math
Answers
A right rectangular prism is 3 in by 4.25 in by 18.25 in. What is the total surface area of the prism?
145.0625 in2
180.625 in2
264.625 in2
290.125 in2
Answers
Identical at both ends, a prism is a three-dimensional solid object 145.0625 in2.
What is meant by surface?the outer face, outside, or exterior limit of a thing; topmost or uppermost layer or area. the six surfaces of a cube; any face of a body or entity.
Surface area; the size or area of the outside of the face. the outside, especially in contrast to the inside nature: to investigate something more deeply. surface, a group of points arranged in two dimensions (flat surface), a group of points arranged in three dimensions (curved surface), or the perimeter of any three-dimensional object.
In general, a surface is a continuous barrier that separates two areas of a three-dimensional space.
There are small cracks all over the surface of the picture. There are tiny cracks all over the surface of the picture. The surface of the bowl is gleaming.
145.0625 in2
180.625 in2
264.625 in2
290.125 in2
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Please help!!!!!!!!!!!!!!!!!
Answers
Hi there!
\(\large\boxed{t = 12.60 \text{ days}}\)
We can solve this by setting the equation equal to 150:
\(150 = \frac{230}{1 + 56.5e^-0.37t}\)
Cross-multiply and divide:
\(150 (1 + 56.5e^{-0.37t})= 230\)
Divide both sides by 150:
\(1 + 56.5e^{-0.37t} = 1.5333\)
Isolate for t by subtracting both sides by 1 and dividing by 56.5:
\(56.5e^{-0.37t} = 0.5333\)
\(e^{-0.37t} = 0.0094395\)
Take the natural log to solve for t:
\(ln (0.0094395) = -0.37t\)
\(-4.6628522 = -0.37t\)
Divide both sides by -0.37:
t = 12.60 days.
Please help me guys I do not know what to do at this point, but to come to yall and I really need help with this math this is due today and please I neeed you guys help I do not want to put any burden on you I am just stress thanks for understanding
Instructions: Tell weather it is a function or not and tell why
Answers
Answer:
YesYesNoNoYesYesNoYesNoNoYesNoYesNoYesYesNoYesYesNoStep-by-step explanation:
A function does not have any repeating domains (x-coordinates).
Hope it helps!
in a group of 60 people, 27 like cold drinks and 42 like hot drinks and each person likes at least one of the two drinks. how many like both cold drinks and hot drinks? (you can use venn diagrams for this problem.)
Answers
In a group of 60 people, 27 like cold drinks and 42 like hot drinks and each persons likes at least one of the two drinks, so 9 people like both cold drinks and hot drinks.
Let A= set of people who like cold drinks.
B = Set of people who like hot drinks.
Since there is group of 60 people so the number of element in AUB is 60.
n(A⋃B) = 60
27 like cold drinks so the number of element in set A is 27.
42 like hot drinks so the number of element in set B is 42.
We have, n(A) = 27 and n(B) = 42
We know that,
n(A∩B) = n(A) + n(B) − n(A⋃B)
By putting the values of n(A), n(B) and n(AUB),
we get
n(A∩B) = 27 + 42 − 60 = 9
Therefore, 9 people like both cold drink and hot drink.
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In a group of 60 people, 27 like cold drinks and 42 like hot drinks and each person likes at least one of the two drinks, so 9 people like both cold drinks and hot drinks.
Let A= set of people who like cold drinks.
B = Set of people who like hot drinks.
Since there is group of 60 people so the number of elements in AUB is 60.
n(A⋃B) = 60
27 like cold drinks so the number of elements in set A is 27.
42 like hot drinks so the number of elements in set B is 42.
We have, n(A) = 27 and n(B) = 42
We know that,
n(A∩B) = n(A) + n(B) − n(A⋃B)
By putting the values of n(A), n(B) and n(AUB),
we get
n(A∩B) = 27 + 42 − 60 = 9
Therefore, 9 people like both cold drink and hot drink.
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Sofia's audio player has 15,000 songs. the play time for the songs is skewed to the right, with a mean of 255 seconds and a standard deviation of 30 seconds. part a: can you accurately calculate the probability that the mean play time is more than 260 seconds for an srs of 15 songs? explain. (4 points) part b: if you take a random sample of 40 songs instead of 15, explain how the central limit theorem allows you to find the probability that the mean play time is more than 260 seconds. calculate this probability and show your work. (6 points)
Answers
Using the normal distribution and the central limit theorem, it is found that:
a) Since the distribution is skewed and the sample size is less than 30, the probability cannot be calculated.
b) There is a 0.1469 = 14.69% probability that the mean play time is more than 260 seconds.
Normal Probability DistributionThe z-score of a measure X of a normally distributed variable with mean \(\mu\) and standard deviation \(\sigma\) is given by:
\(Z = \frac{X - \mu}{\sigma}\)
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation \(s = \frac{\sigma}{\sqrt{n}}\), as long as the underlying distribution is normal and the sample size is at least 30.The mean and the standard deviation are given by, respectively:
\(\mu = 255, \sigma = 30\)
In item a, according to the Central Limit Theorem, since the distribution is skewed and the sample size is less than 30, the probability cannot be calculated.
For item b, we have that n = 40 > 15, hence the standard error is given by:
\(s = \frac{30}{\sqrt{40}} = 4.74\)
The probability is one subtracted by the p-value of Z when X = 260, hence:
\(Z = \frac{X - \mu}{\sigma}\)
By the Central Limit Theorem
\(Z = \frac{X - \mu}{s}\)
\(Z = \frac{260 - 255}{4.74}\)
Z = 1.05
Z = 1.05 has a p-value of 0.8531.
1 - 0.8531 = 0.1469.
There is a 0.1469 = 14.69% probability that the mean play time is more than 260 seconds.
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