What is Euclidian Geometry?
Answers
Answer:
Euclidean geometry is a mathematical system attributed to ancient Greek mathematician Euclid, which he described in his textbook on geometry: the Elements. Euclid's approach consists in assuming a small set of intuitively appealing axioms, and deducing many other propositions from these.
Step-by-step explanation:
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Related Questions
if a stratified random sampling procedure is used, give one example of an effective variable on which to stratify in this survey. explain your reasoning.
Answers
The kids' judgments of the significance of excellent nutrition in the food given may vary based on the students' ages and, consequently, on school level, making this variable an useful one to stratify the survey on.
what is random sampling?Each sample has an equal chance of being picked when using the random sampling sampling approach. It is intended that a sample picked at random will be a fair reflection of the entire population. Two different approaches to sampling exist: Random selection is a key component of probability sampling, which enables you to draw robust statistical conclusions about the entire group. Non-probability sampling incorporates non-random selection based on practicality or other factors, making it simple to gather data.
The student's degree of education is one potential stratification factor. Depending on the kids' ages and, thus, on their academic ability, the students' judgments of the significance of nutritious meals may vary. In contrast to middle school and high school pupils, elementary school children may place different values on the food that is offered.
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To complete a task in 16 days a company needs 5 people working 6 hors per day the company decides to have 8 people each working for 4 hours per day assuming that each person works at the same rate how many days will the task take to complete
Answers
Answer:X=15d or just 15
Step-by-step explanation:Since there is an increase in manpower/hours of: [8 x 4] / [6 x 5] = 16/15, therefore, there must be decrease in days by the same pecentage. Or 16 / [16 / 15] =16 x 15/16 =15 days
Answer:
15 days
Step-by-step explanation:
Or you could just write 15 on MathsWatch
Please help me with angles.
Answers
Answer:
Step-by-step explanation:
Mrs. Austin wraps 3 presents in 1/4 of an hour. At that rate, how many presents will be wrapped in 3 hours?
Answers
Answer:
36
Step-by-step explanation:
Answer:
36 presents
Step-by-step explanation:
there will be 12 presents wrapped per hour, since there are 3 presents in 1/4 hour. 12x3 is 36 :).
Maria makes 9 dollars for each hour of work. Write an equation to represent her total pay p after working h hours.
Answers
Answer: p = 9h
Step-by-step explanation:
If she makes 9 dollars of every hour of work, this will be a linear equation. We will write it as the following:
p = 9h
Answer:
9h/p
Step-by-step explanation:
9 x # of hours = total pay
$9 is the dollars for each hour, so you multiply that by how many hours Maria works. You will get the total pay.
The location of the vertex Q after the dilation is (-2,-2). What is the location of vertex M after the dilation?
Answers
The location of vertex M after the dilation by a factor of 1/4 is at (-4, 3)
Dilation is a way of moving an object from a point on a plane to another location.
From the diagram attached, the coordinate of the vertex Q is at (-8, -8).
If the vertex Q after the dilation is (-2,-2), this means that the original coordinate is dilated by a factor of 1/4.
The vertex of coordinate M from the diagram is (-16, 12). Dilating the coordinate using a scale factor of 1/4 will give;
M' = (-16/4, 12/4) = (-4, 3)
Hence the location of vertex M after the dilation is at (-4, 3)
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Daphne played 240 consecutive games of soccer without being taken off the field. Then, after a single game on the sidelines, she played another string of consecutive games, although this string was 40% shorter. How many consecutive games was that?
Answers
Answer:
144.
Step-by-step explanation:
40% shorter means she played 100 - 40 = 60% of the previous tall.
60% of 240
= 240 * 0.6
= 144 games.
Connor is driving on a long road trip. He currently has 9 gallons of gas in his car. Each hour that he drives, his car uses up 2 gallons of gas. How much gas would be in the tank after driving for 3 hours? How much gas would be left after t hours?
Answers
i think its 2 gallons
In a recent study, volunteers who had 8 hours of sleep were three times more likely to answer questions correctly on a math test than were sleep-deprived participants.
Answers
Answer:
Step-by-step explanation:
Sleep Deprivation
In a recent study, volunteers who had 8 hours of sleep were three times more likely to answer correctly on a math test than were sleep-deprived participants.
(a) Identify the sample used in the study.
(b) What is the sample's population?
(c) Which part of the study represents the descriptive branch of statitics?
(d) Make an inference based on the results of the study?
Solution
A. The samples used is the hours of sleep and math test scores of the volunteers
B. The samples population is hours of sleep and math test scores of people in general
C. The part of the study that represent the descriptive branch of statistics is "three times more likely"
D.Inference: To perform well in a math test, a person should get at least 8 hours of sleep the night before.
Sheila has 13
pounds of potato salad. She wants to divide the potato salad into containers, each of which holds 1
pounds. How many containers does she need? Complete the explanation.
Answers
Answer:
she needs 13 containers because their are 13 pounds and each hold 1 pound
An engineer created a scale drawing of a building using a scale in which 0.25 inch represents 2 feet. The length of the actual building is 120 feet. What is the length in inches of the building in the scale drawing? Record your answer in the box below.
Answers
Answer:
15 in--------------------
The scale is given:
0.25 in ⇒ 2 feetThe length of the actual building is 120 feet, it is 60 times the 2 in, hence the length of the building in the drawing will be 60 times greater than the corresponding part of the scale:
0.25 in x 60 = 15 inWhat is the equation of the line that
passes through the point (3, -4) and has
a slope of -5/3?
Answers
y=-5/3x+7 is the equation of the line that passes through the point (3, 2) and has a slope of - 5/3.
What is the Slope of the Line?
The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of the line in the coordinate plane.
The slope-intercept form of a line is y=mx+b, where m is the slope-intercept the y-intercept slope, and b is the y-intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
We need to find the equation of the line that passes through the point (3, 2) and has a slope of - 5/3
m=-5/3.
We need to find the y-intercept passing through (3,2)
2=-5/3(3)+b
2+5=b
7=b
Hence, y=-5/3x+7 is y-intercept the equation of the line that passes through the point (3, 2) and has a slope of - 5/3.
One scientist involved in the study believes that large islands (those with areas greater than 25 square kilometers) are more effective than small islands (those with areas of no more than 25 square kilometers) for protecting at-risk species. The scientist noted that for this study, a total of 19 of the 208 species on the large island became extinct, whereas a total of 66 of the 299 species on the small island became extinct. Assume that the probability of extinction is the same for all at-risk species on large islands and the same for all at-risk species on small islands. Do these data support the scientist’s belief? Give appropriate statistical justification for your answer.
Answers
Yes, these data support the scientist's belief that large islands are more effective at protecting at-risk species than small islands. To provide statistical justification, we can compare the probability of extinction for each island size: For large islands, the probability of extinction is 19/208, or approximately 0.091. For small islands, the probability of extinction is 66/299, or approximately 0.221.
The data provided can support the scientist's belief that large islands are more effective than small islands for protecting at-risk species. We can use the concept of probability to calculate the likelihood of extinction for both large and small islands.
For the large island, the probability of extinction for any given species is 19/208 or approximately 0.091. For the small island, the probability of extinction for any given species is 66/299 or approximately 0.221.
Comparing these probabilities, we see that the probability of extinction is higher for at-risk species on small islands than on large islands. This supports the scientist's belief that large islands are more effective for protecting at-risk species.
Additionally, we can use statistical tests such as a chi-square test or a two-sample t-test to confirm whether the difference in extinction rates between large and small islands is statistically significant.
These tests would require more information such as sample size and variance, but based on the provided data alone, the probability calculations suggest that the scientist's belief is supported.
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in testing a new drug, researchers found that 5% of all patients using it will have a mild side effect. a random sample of 5 patients using the drug is selected. find the probability that exactly two will have this mild side effect.
Answers
The probability that exactly two will have this mild side effect is
\(P(X=2)=0.1229\)
Probability is defined as the likelihood that a trial will succeed or fail. The ratio of positive events to all possible outcomes is known as probability. The probability scale ranges from 0 to 1.
Given data:
The probability of all patients that will have the mild side effect is p=5%=0.05
The number of people selected is n=14
The expression for the probability that exactly two will have this mild side effect is given as,
\(P(X=x)=^{n}C _{x} p^{x} (1-p)^{n-x}\)
Substituting the values in the above equation as
\(P(X=x)=^{n}C _{x} p^{x} (1-p)^{n-x}\\P(X=2)=^{14}C _{2} 0.05^{2} (1-0.05)^{14-2}\\P(X=2)=91*0.0025*0.54036\\P(X=2)=0.1229\)
Thus the probability that exactly two will have this mild side effect is
\(P(X=2)=0.1229\)
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fresno, ca maximum s wave amplitude= (with epicentral distance of 340 km) answer
Answers
The maximum S-wave amplitude of the earthquake in Fresno, CA with an epicentral distance of \(340\) km is approximately \(1.049\).
The maximum S-wave amplitude of an earthquake in Fresno, CA, with an epicentral distance of \(340\) km can be calculated using the equation: \($\log(A) = 0.00301M + 2.92 - 0.0000266d$\), where \($A$\) represents the amplitude of the S-wave, \($M$\) is the magnitude of the earthquake, and \($d$\) is the epicentral distance in kilometers. Given the epicentral distance of \(340\) km, we need to determine the magnitude of the earthquake to compute the S-wave amplitude. By substituting \($A=1.0$\) into the equation, we can solve for $M$, yielding \($M = 6.124$\). Substituting this magnitude into the initial equation, we find \($\log(A) = 0.0184$\), resulting in \($A = 1.049$\). Therefore, the maximum S-wave amplitude of the earthquake in Fresno, CA, at an epicentral distance of \(340\) km is approximately \(1.049\).In conclusion, the maximum S-wave amplitude of the earthquake in Fresno, CA with an epicentral distance of \(340\) km is approximately \(1.049\)(without any further context or analysis).
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Answer:
1049
Step-by-step explanation:
The maximum S-wave amplitude of an earthquake in Fresno, CA, with an epicentral distance of km can be calculated using the equation: , where represents the amplitude of the S-wave, is the magnitude of the earthquake, and is the epicentral distance in kilometers.
Given the epicentral distance of km, we need to determine the magnitude of the earthquake to compute the S-wave amplitude.
By substituting into the equation, we can solve for $M$, yielding . Substituting this magnitude into the initial equation, we find , resulting in . Therefore, the maximum S-wave amplitude of the earthquake in Fresno, CA, at an epicentral distance of km is approximately .
6. A right triangle includes one angle that
measures 30°, What is the measure of
the third angle?
A 30°
C 60°
B 90°
D 130°
Answers
Answer:
C, 60 degrees
Step-by-step explanation:
Right Triangle, with a 30 degree angle:
Given degrees:
90 (Right Triangle)
30
90+30 = 120
180-120 = 60
180 Degrees total in a triangle, you simply subtract the measure you have to fidn the third one.
Answer:
The measure of the third angle is 60°.
Step-by-step explanation:
We are given a right triangle that has a 90 degree and two other angles that are unknown.
Since one known angle is 90° and another angle given is 30° then the third angle must be 60°. All triangles must add up to 180°.
180° - 90° - 30° = 60°.
Here is an image of the demonstration/explaining types of triangles.
Delta math question —-
Answers
Answer:
21
Step-by-step explanation:
I think its 21, because the BD line divides the big triangle into 2 ones and they are equilateral triangle, sorry if I'm wrong
Answer:
BD = 21
Step-by-step explanation:
The sector divided AC into two equal pieces and since this is a right triangle the height of the triangle BD is equal to half of the base
(21+21) / 2 = x
42 / 2 = x
21 = x
The 50th repetition of a job is timed at 100 minutes. If the learning curve for this job is 90 percent, what is the estimated time for the 100th repetition of this job
Answers
The estimated time for the 100th repetition of this job is approximately 111.11 minutes, assuming a learning curve of 90 percent.
How is the 100th repetition estimated?To estimate the time for the 100th repetition of the job, we can use the concept of a learning curve. The learning curve assumes that as the number of repetitions increases, the time required decreases at a constant percentage rate. In this case, the learning curve is 90 percent.
To estimate the time for the 100th repetition, we can use the formula:
Estimated time for the 100th repetition = Time for the 50th repetition / (Learning curve)\(^log2\)(100/50)
Plugging in the given values:
Estimated time for the 100th repetition = 100 minutes / (0.90)\(^log2(100/50)\)
Simplifying the expression:
Estimated time for the 100th repetition ≈ 100 minutes / \((0.90)^1\)
Estimated time for the 100th repetition ≈ 100 minutes / 0.90
Estimated time for the 100th repetition ≈ 111.11 minutes
Therefore, the estimated time for the 100th repetition of this job is approximately 111.11 minutes.
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Kendrick attends a private school where he must wear a uniform. Last year, the price of the uniform was $52. This year's uniform price was $65. What is the percent of increase in the cost of the uniform?
Answers
The percent increase in the cost of the uniform from last year to this year is 25%.
What is the percent of increase in the cost of the uniform?To find the percent increase in the cost of the uniform from last year to this year, we need to calculate the difference between the two prices, divide it by the original price, and then multiply by 100 to express the result as a percentage.
The difference between this year's price and last year's price is:
$65 - $52 = $13
The original price (last year's price) is $52.
So the percent increase in the cost of the uniform is:
percent increase = (difference / original price) x 100
percent increase = ($13 / $52) x 100
percent increase = 0.25 x 100
percent increase = 25%
Therefore, the percent increase in the cost of the uniform from last year to this year is 25%.
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A ladder is 53 inches tall. How tall is it in feet and inches?
Answers
Answer:
53 inches = 4.41667 ft
Step-by-step explanation:
1 ft = 12 inches
53 inches = 53/12 = 4.41667 ft
Answer:
Step-by-step explanation:
fr had to delete my answer i tried my best u ungrateful peice of shat
20 POINTS!!! HELP!!!!!!
Answers
the answer is c not a because you have to eliminate the answer and I eliminate b and a
Answer:
c
Step-by-step explanation:
i did it no cap
12-09-2020 11:47:00 AM 9/12/2020 10:46:26 AM
Name: Punja adhikari
Roll No 20778437
virs 5mins 3 secs
28 760
The ages of mother and her daughter are in the ratio of 5:3. If the age
of mother is 50 years, find the age of her daughter.
30 years
20 years
15 years
25 years
Answers
Answer:
the age of her daughter is 30
Step-by-step explanation:
be careful when putting your full name, ok?
Answer:
The daughter is 30 yrs old
Step-by-step explanation
just like the other guy said don't put your real name be carful they're scammers out there.
Which term has the definition "A conclusion based on evidence"?
a. Data
b. Bias
c. Inference
d. Sample
Answers
Answer:
The answer would be C. Inference
What is the principal solution to the equation?
x^2=121
Pls explain for brainliest and a like
1.step by step
2. correct answer
3. clearly explained
Answers
Answer:
x = 11
Step-by-step explanation:
\(x^{2}\) = 121
This means that 'x' × 'x' = 121
To know the value of x, we need to find the root of 121.
\(\sqrt{121}\) = 11
If u mutiply 11 x 11 , you get 121.
Thus, x = 11
Answer:
x = 11, -11
use the formula: \(\sf a^2 = b\) ➳ \(\sf a = \sqrt{b}, \ a = -\sqrt{b}\)
\(\hookrightarrow \sf x^2=121\)
changing the sides, changes square ( ² ) to square root ( ±√ )
\(\hookrightarrow \sf x=\pm \sqrt{121}\)
\(\hookrightarrow \sf x=\sqrt{121},\:x=-\sqrt{121}\)
\(\hookrightarrow \sf x=11,\:x=-11\)
by observing a set of data values, thomas used a calculator for the weight (in pounds) and predicted the number of calories burned per minute to get an equation for the least-squares line: ŷ
Answers
A person weighing 173 pounds can burn 10.7 calories per minute.
The given equation is ŷ=2.2+0.05x.
To solve this question, we can use the equation given, ŷ=2.2+0.05x. We can insert the known weight value, 173 pounds, to calculate the anticipated calories burned per minute.
y = 2.2 + 0.05x
y = 2.2 + 0.05 × 173
y = 10.7
Therefore, a person weighing 173 pounds can burn 10.7 calories per minute.
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"Your question is incomplete, probably the complete question/missing part is:"
By observing a set of data values, Thomas used a calculator for the weight (in pounds) and predicted the number of calories burned per minute to get an equation for the least-squares line: ŷ=2.2+0.05x
Based on the information gathered by Thomas, select the statement that is true.
a) A person weighing 149 pounds can burn 9.8 calories per minute.
b) A person weighing 134 pounds can burn 8.9 calories per minute.
c) A person weighing 125 pounds can burn 8.3 calories per minute.
d) A person weighing 173 pounds can burn 10.7 calories per minute.
Answer:
A person weighing 134 pounds can burn 8.9 calories a minute.
Step-by-step explanation:
which equation has both 5 and -5 as possible values of y?
Answers
Consider : y² = 25
⇒ y = \(\sqrt{25}\)
We know that : 5² = 25 and also (-5)² = 25
⇒ y = \(\sf{\sqrt{(5)^2} \ \text(or) \ \sqrt{(-5)^2}}\)
⇒ y = +5 or -5
So, The Answer is C
In the figure below, m||n. If m<5 = 115, find the rest of the angle measures.
m<1 = ?
m<2= ?
m<3= ?
m<4= ?
m<5= ?
m<6= ?
m<7= ?
m<8= ?
Answers
Answer:
ma
Step-by-step explanation:
iminlove
Answer:
m<1 = 111
m<2= 112
m<3= 113
m<4= 114
m<5= 115
m<6= 116
m<7= 117
m<8= 118
Step-by-step explanation:
the power of varibles defines the order
Iq scores are known to be normally distributed. the mean iq score is 100 and the standard deviation is 15. what percent of the population has an iq over 115?
Answers
The 100%-Norm.Dist(value,mean,sd,true) percent of the population has an iq over 115
According to the statement
we have to find that the what percent of the population has an iq over 115.
And from given information,
the mean iq score is 100 and the standard deviation is 15.
And
Normal distribution, is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.
And by use of this formula, we find the percentage of the population has an iq over 115.
Then the result will comes as 100%.
hence, 100%-Norm.Dist(value,mean,sd,true)
So, The 100%-Norm.Dist(value,mean,sd,true) percent of the population has an iq over 115.
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what is an appropriate way to visualize a list of the eye colors of 120 people? select all that apply.
Answers
The appropriate way to visualize a list of the eye colors of 120 people is pie chart and dot plot.
A pie chart is a circular statistical graphic in which the slices represent numerical proportions. In a pie chart, the arc length of each slice reflects the amount it stands for.
Pie charts can be used to show percentages of a whole group and show percentages at a particular moment. In contrast to bar graphs and line graphs, pie charts do not show changes over time.
A dot plot, also known as a strip plot or dot chart, is a simple style of data visualization in which data points are shown as dots on a graph with an x- and y-axis.
The things you and your partner choose to eat are a wonderful example.
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The following question may be like this:
What is an appropriate way to visualize a list of the eye colors of 120 people? select all that apply.
pie chart box plotscatter plotdot plot.A village loses 14% of its goats in a flood and 6% of the remainder die from dieseses.given that the number of goats left is 8084, find the original number of goats in the village.
Answers
Answer:
The original number of goats in the village is 6467.
Step-by-step explanation:
First Sum of the given percentage
i.e.,
14% + 6% = 20%
Now, The 20% of the given no. of goat is,
8084 × 20/100 = 1616
Now,
8084 - 1616 = 6467
Thus, The original number of goats in the village is 6467.
-TheUnknownScientist 72
Answer:
A village loses 14% of its goats in a flood
6% of the remainder die from dieseses
The 80%(100-14-6) goats are left in.
But, given that 8084 goats are left .
Let, x be the original number of goats in the village.
hence,
80% - 8084
100% - x
\( \sf{x = \frac{8084 \times 100}{80} =10105 }\)
•°•The original number of goats in the village is 10105.
hope it helps :)