What part of the protractor do you line up with the vertex?
Answers
When using a protractor to measure angles, it is important to know where to line up the tool in relation to the vertex of the angle.
The vertex is the point where the two lines or rays that make up the angle meet. To line up the protractor correctly, place the center point of the protractor directly over the vertex of the Unit. This point is often marked with a small dot or hole on the tool. Then, make sure that one of the baseline edges of the protractor lines up with one of the lines or rays that make up the angle. The angle measurement can then be read off the protractor where the other baseline edge intersects with the circular degree scale.
To learn more about Unit click here: brainly.com/question/23843246
#SPJ11
Related Questions
(05.01)
The graph below shows a system of equations:
y=x+4
3y = -2x + 2
The x-coordinate of the solution to the system of equations is
Answers
Answer:
x= -2
Step-by-step explanation:
since we know what y equals we fill it into the second equation
3(x+4)= -2x+2
3x+12=-2x+2
-12. -12
3x=-2x-10
+2x +2x
5x=-10
/5. /5
x= -2
hopes this helps please mark brainliest
Write -1.1 as a mixed number.
Answers
Answer:
- 1 1/10--------------------------------
A mixed number is the number in the format a b/c, where a - whole number and b/c - the fraction part.
Show the given as a mixed number:
- 1.1 = - (1 and 0.1) = - (1 and 1/10) = - 1 1/10Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard deviation is 2. 9. What is the margin of error, assuming a 90% confidence level? Round your answer to the nearest tenth.
Answers
The margin of error of the random selection is 0.29
The given parameters are:
\(n = 320\) --- the sample size
\(\sigma = 2.9\) --- the standard deviation
\(\bar x = 24\) --- the mean
\(\alpha = 90\%\) --- the confidence level.
The margin of error (E) is calculated as follows:
\(E = z \times \sqrt{\frac{\sigma^2}{n}}\)
So, we have:
\(E = z \times \sqrt{\frac{3.2^2}{320}}\)
\(E = z \times \sqrt{\frac{10.24}{320}}\)
The z-value for 90% confidence level is 1.645.
Substitute 1.645 for z
\(E = 1.645 \times \sqrt{\frac{10.24}{320}}\)
\(E = 1.645 \times \sqrt{0.032}\)
Take square roots
\(E = 1.645 \times 0.1789\)
Multiply
\(E = 0.2943\)
Approximate
\(E = 0.29\)
Hence, the margin of error is 0.29
Read more about margin of error at:
https://brainly.com/question/14396648
A parallelogram is a quadrilateral with two pairs of parallel sides.
A quadrilateral is a parallelogram _[blank]_.
Which answer correctly fills in the blank in the previous sentence?
A) because it has only four sides and two of them are parallel
B) if it has two pairs of parallel sides and is a polygon
C) if it has only two pairs of parallel sides
D) if and only if it has two pairs of parallel sides
Answers
Answer:
C
Step-by-step explanation:
The quadrilateral is a parallelogram if and only if it has two pairs of parallel sides option (D) is correct.
What is parallelogram?In two-dimensional geometry, it is a plane shape having four sides, in which two pairs of sides are parallel to each other and equal in length. The sum of all angles in a parallelogram is 360°.
It is given that:
A parallelogram is a quadrilateral with two pairs of parallel sides.
As we know,
The quadrilateral can be defined as the four-sided polygon in geometry having four edges and four corners.
The quadrilateral, has:
Two pairs of congruent sides.
It has one pair of opposite congruent angles.
The diagonals of a kite are perpendicular.
One diagonal is bisected.
The top and bottom angles are bisected but does not have congruent diagonals.
A quadrilateral is a parallelogram if and only if it has two pairs of parallel sides.
Thus, the quadrilateral is a parallelogram if and only if it has two pairs of parallel sides option (D) is correct.
Learn more about the parallelogram here:
brainly.com/question/1563728
#SPJ2
5. Lines and m are perpendicular. A point Q has this
property: rotating Q 180 degrees using center P has the
same effect as reflecting Q over line m.
a. Give two possible locations of Q.
B. Do all points in the plane have this property?
Answers
It should be noted that rotating Q 180 degrees using the center P has the same effect as reflecting Q over the Line M due to the fact that Lines L and M are perpendicular lines.
Want are perpendicular lines?It should be noted that perpendicular lines are the lines that intersect at a 90-degree angle. When two non-vertical lines are in the same plane and intersect at a right angle, they are said to be perpendicular.
It should be noted that horizontal and vertical lines are simply perpendicular to each other that is, the axes of the coordinate plane. Also, the slopes of the perpendicular lines are negative reciprocals.
Based on the information, rotating Q 180 degrees from the center will be similar to reflecting Q over any of the perpendicular lines. Note that an overview was given as the information wasn't complete.
Learn more about perpendicular lines on:
https://brainly.com/question/1202004
#SPJ1
A pizza lover wants to compare the average delivery times for four local pizza restaurants. Over the course of a few weeks, he orders a number of pizzas from each restaurant, and he records the time it takes for each pizza to be delivered.
a) When performing an ANOVA with this data, what is the alternative hypothesis?
- All of the restaurants have different mean delivery times
- At least two of the restaurants have different mean delivery times
- Two of the restaurants have different mean delivery times
- One of the restaurants has a different mean delivery time than the others
b) A partial ANOVA table for his data is shown below. What is the value of B?
Source DF SS MS F P-value
Treatment B 19.31 D F G
Error C 15.667 E
Total 18 34.977
What is the value of C in the ANOVA table?
d) What is the value of D in the ANOVA table? Give your answer to three decimal places.
e) What is the value of E in the ANOVA table? Give your answer to three decimal places.
f) What is the value of F in the ANOVA table? Give your answer to two decimal places.
g) What is the value of G in the ANOVA table? Give your answer to four decimal places.
h) Using a 0.1 level of significance, what should his conclusion be in this case?
- He should conclude that at least two of the restaurants have different mean delivery times because the P-value is less than 0.1.
- He should fail to reject the claim that at all of the restaurants have the same mean delivery times because the P-value is greater than 0.1.
- He should conclude that at least two of the restaurants have different mean delivery times because the P-value is greater than 0.1.
- He should conclude that at all of the restaurants have the same mean delivery times because the P- value is less than 0.1.
Answers
(a) When performing an ANOVA with the data the alternative hypothesis is at least two of the restaurants have different mean delivery times.
(b)75.8
Analysis of variance. or ANOVA, is a statistical method that separate observed variance data into different components to use for additional tests. A one way ANOVA is used for three or more groups of data, to gain information about the relationship between the dependent and independent variables.
The ANOVA table shows how the sum of squares are distributed according to source of variation, and hence the mean sum of squares.
It is given that a pizza lover wants to compare the average delivery times.
Therefore the null hypothesis and alternate hypothesis implies that,
H₀ = all restaurants have equal mean delivery time
Hₐ = at least two restaurants have different two deliveries
Hence the alternate hypothesis for performing an ANOVA with the data is at least two of the restaurants have different mean delivery times.
The alternate hypothesis (Hₐ) defines that there is a statistically important relationship between two variables. Whereas null hypothesis states that is no statistical relationship between the two variables.
To know more about hypothesis here
https://brainly.com/question/14517618
#SPJ4
any ideas
Solve for x.
3(x - 2) =
6x - 12
3
Answers
3(x - 2) = 6x - 12
To Find:The value of x.
Solution:By opening the brackets, we get
3x - 6 = 6x - 12
By putting the common terms in a side, we get
3x - 6x = -12 + 6
(The value of a term changes when we take it to the other side of an equation)
By Subtracting and Adding the like terms, we get
-3x = -6
By putting -3 to the left side of the equation, we get
x = -6/-3
(The value of a term changes when we take it to the other side of an equation)
Answer:x = 2
Which of these expression is equivalent to 10% . 10%?
A. 100'
B. 103
C. 10,000,000
D. 2010
E. 107
what expression is equivalent to
Answers
Exam Find the area of this figure. [ 2 ] square inches 9 in. 13 in. 15 in. 10 in. 4 in.
Answers
Answer:
202 Square inches and here's a cool face ツ
Answer:
202 square inches
Step-by-step explanation:
4x13=52 and 15x10=150 so 150+52=202
.The variables x and y vary inversely. Use the given values to write an equation relating x and y. Then find y when x = 3. x = 1, y = 9
Answers
The given problem states that x and y vary inversely, and by using the given values, an equation is formed (x * y = 9) which can be used to find y when x = 3 (y = 3).
Since x and y vary inversely, we can write the equation as x * y = k, where k is a constant.
Using the given values x = 1 and y = 9, we can substitute them into the equation to find the value of k:
1 * 9 = k
k = 9
Therefore, the equation relating x and y is x * y = 9.
To find y when x = 3, we substitute x = 3 into the equation:
3 * y = 9
y = 9 / 3
y = 3
So, when x = 3, y = 3.
To know more about equation,
https://brainly.com/question/32335478
#SPJ11
The price of trail mix at a health food store is
$7.50 per pound. At that rate, what is the total
cost of three 8-ounce bags of trail mix?
Answers
Answer:
$3.75 every 8 oz bags.
Step-by-step explanation:
7.5 divided by 2 to get 3.75. 1 LB is equal to 16 oz so 8 is half of 16.
(c) A non-uniform but spherically symmetric charge distribution has a charge density: rho(r)=rho 0
(1−r/R)
rho(r)=0
for r≤R
for r>R
where rho 0
=3Q/πR 3
is a positive constant. Show that the total charge contained in this charge distribution is Q. [4] Show that the electric field in the region r>R is identical to that created by a point charge Q at r=0 [2] Derive an expression for the electric field in the region r≤R. [5]
Answers
To show that the total charge contained in the charge distribution is Q, we integrate the charge density over the entire volume. The charge density is given by:
ρ(r) = ρ₀(1 - r/R) for r ≤ R,
ρ(r) = 0 for r > R,
where ρ₀ = 3Q/πR³.
To find the total charge, we integrate ρ(r) over the volume:
Q = ∫ρ(r) dV,
where dV represents the volume element.
Since the charge density is spherically symmetric, we can express dV as dV = 4πr² dr, where r is the radial distance.
The integral becomes:
Q = ∫₀ᴿ ρ₀(1 - r/R) * 4πr² dr.
Evaluating this integral gives:
Q = ρ₀ * 4π * [r³/3 - r⁴/(4R)] from 0 to R.
Simplifying further, we get:
Q = ρ₀ * 4π * [(R³/3) - (R⁴/4R)].
Simplifying the expression inside the parentheses:
Q = ρ₀ * 4π * [(4R³/12) - (R³/4)].
Simplifying once more:
Q = ρ₀ * π * (R³ - R³/3),
Q = ρ₀ * π * (2R³/3),
Q = (3Q/πR³) * π * (2R³/3),
Q = 2Q.
Therefore, the total charge contained in the charge distribution is Q.
To show that the electric field in the region r > R is identical to that created by a point charge Q at r = 0, we can use Gauss's law. Since the charge distribution is spherically symmetric, the electric field outside the distribution can be obtained by considering a Gaussian surface of radius r > R.
By Gauss's law, the electric field through a closed surface is given by:
∮E · dA = (1/ε₀) * Qenc,
where ε₀ is the permittivity of free space, Qenc is the enclosed charge, and the integral is taken over the closed surface.
Since the charge distribution is spherically symmetric, the enclosed charge within the Gaussian surface of radius r is Qenc = Q.
For the Gaussian surface outside the distribution, the electric field is radially directed, and its magnitude is constant on the surface. Hence, E · dA = E * 4πr².
Plugging these values into Gauss's law:
E * 4πr² = (1/ε₀) * Q,
Simplifying:
E = Q / (4πε₀r²).
This is the same expression as the electric field created by a point charge Q at the origin (r = 0).
To derive an expression for the electric field in the region r ≤ R, we can again use Gauss's law. This time we consider a Gaussian surface inside the charge distribution, such that the entire charge Q is enclosed.
The enclosed charge within the Gaussian surface of radius r ≤ R is Qenc = Q.
By Gauss's law, we have:
∮E · dA = (1/ε₀) * Qenc.
Since the charge distribution is spherically symmetric, the electric field is radially directed, and its magnitude is constant on the Gaussian surface. Hence, E · dA = E * 4πr².
Plugging these values into Gauss's law:
E * 4πr² = (1/ε₀) * Q.
Simplifying:
E = Q / (4πε₀r²).
This expression represents the electric field inside the charge distribution for r ≤ R.
Learn more about charge here:
https://brainly.com/question/18102056
#SPJ11
Given an array of strings words and an integer k, return the k most frequent strings.
Return the answer sorted by the frequency from highest to lowest. Sort the words with the same frequency by their lexicographical order.
Answers
We can use a priority queue to keep track of the k most frequent strings. The priority queue should be sorted by the frequency of the strings, and in case of ties, we should sort by lexicographical order.
Here's the step-by-step algorithm to solve the problem:
1. Create a hash map to count the frequency of each string in the array.
2. Create a priority queue and define a custom comparator function that compares strings based on their frequency and lexicographical order.
3. Iterate over the keys of the hash map and add each string to the priority queue.
4. Pop the top k strings from the priority queue and add them to the result array.
5. Return the result array sorted in descending order of frequency.
Here's the Python code that implements this algorithm:
```
import heapq
from collections import defaultdict
def topKFrequent(words, k):
freq = defaultdict(int)
for word in words:
freq[word] += 1
pq = []
for word, count in freq.items():
heapq.heappush(pq, (-count, word))
res = []
for i in range(k):
res.append(heapq.heappop(pq)[1])
return sorted(res, key=lambda x: (-freq[x], x))
```
In this code, we use a defaultdict from the collections module to count the frequency of each string. We then use a heap (implemented as a list) to keep track of the k most frequent strings. The -count value is used as the first element of each tuple in the heap, so that we can sort the strings by frequency in descending order. The second element of each tuple is the string itself, which is used to break ties in case of equal frequency. Finally, we sort the result array based on the frequency and lexicographical order using the sorted function and a lambda function.
Visit here to learn more about lambda function : https://brainly.com/question/30904350
#SPJ11
Use the figures to complete the statements proving the converse of the Pythagorean theorem.
Drag and drop a phrase, value, or equation into the box to correctly complete the proof.
To prove the converse of the Pythagorean theorem, we must show that if △ABC has sides of a, b, and c such that a² + b² = c² , then △ABC is a right triangle.
Define △DEF so that it is a right triangle with sides a, b, and hypotenuse x. By the Pythagorean theorem, a² + b² = x² .
Since a² + b² = c² and a² + b² = x², it must be true that c² = x². Since sides of triangles are positive, then we can conclude that Response area. Thus, the two triangles have congruent sides and are congruent.
Finally, if △ABC is congruent to a right triangle, then it must also be a right triangle.
Two right triangles with points labeled in capital letters and sides labeled in lower case letters.
Answers
Answer:
def
Step-by-step explanation:
trust meh
took quiz
Answer:
it is DEF
Step-by-step explanation:
i did the k12 quiz
Find the slope of -1:9 0:5 1:1,
-4/1
-1/4
1/4
4/1
Answers
Answer:
1/4
Step-by-step explanation:
A P E X
Answer: I’m a goofy goober yeah your a goofy goober yeah
Step-by-step explanation:
Pls help me I have no idea
Answers
Answer:
130 degrees
Step-by-step explanation:
ABF and BFE are alternate angles. So BFE is 65
BG=FG so FBG is 65. x the exterior angle is 65+65=130 degrees
What is the value of x
Answers
Answer:
x=32
Step-by-step explanation:
Since all triangles in a triangle add up to 180, we can do 180-116=64. There are 2 more blank angles so we can divide 64 by 2 to get 32. I think that x is 32, but please correct me if I am wrong. Everybody makes mistakes.
Favorite days of the week Monday 55% Tuesday 45% 4) If 220 people were surveyed, how many more people voted for Monday than for Tuesday?
Answers
Answer: 22
Step-by-step explanation:
Ok, so the way I do it I multiply then divide.
For Monday I did: ?/220=55/100. what you would do is multiply across then divide by the other number, so 220x55 which is 12100 then you will divide it by 100. So 121 people voted on Monday
For Tuesday: Using the same method. ?/220=45/100 you will multiply 45x220 giving you 9900 then you will divide by 100 giving you 99. 99 people voted on Tuesday.
So to find the DIFFERENCE you need to subtract, so 121-99 leaving you with 22. Also, if you are confused how on where I got 100 from you put the percentage over 100, because percentages go from 0%-100% so you put the partial percentage over the maximum (100)
what number should be added to 8000 to make it a perfect square
Answers
Answer:
100
Step-by-step explanation:
If we add 100 to 8000, get 8100 which is a perfect square: 90^2=8100
Simplify.
(8y)2
Write your answer without parentheses.
x
Ś
?
Answers
Answer:
16y
Step-by-step explanation:
(8y)² equals 64y².
Given that an expression, (8y)², we need to simplify it,
Using the concept of Exponents and Powers,
Mathematics uses exponents and powers to indicate repeated multiplication or raising a quantity to a specific power.
They are essential ideas in mathematics and are applied frequently in many disciplines, such as physics, calculus, and algebra.
You must apply the exponent to both the 8 and the y in order to simplify (8y)2 without using parenthesis.
(8y)² = 8² x y²
Now, break each section out separately:
8² = 8 x 8 = 64
Y² stays the same.
As a result, (8y)² becomes 64y².
Hence (8y)² = 64y²
Learn more about Exponents and Powers click;
https://brainly.com/question/28515493
#SPJ6
please help!!!!!! ill give you brainliest!
Answers
Answer:
The team made x<53 points total.
Step-by-step explanation:
1/4+1/10 is 7/20 or 0.35 in decimal form. If they both together scored 21 points then you can add another 7/20 (21 points) and have 14/20 (42 points). You have 6/20 more left. If you can solve what 1/20 could be then you would find the answer. Does this helps?
Answer:
The total number of points scored is 60.
Step-by-step explanation:
We can multiply a number to both fractions to get them to share a common denominator so we can add them easily. 20 is a multiple of both 4 and 5, so let us multiply both denominators so that they each have a denominator of 20.
1/10 * 2 = 2/20
1/4 * 5 = 5/20
Now we can add those fractions together because we want to see the total amount of points the team scored.
2/20 + 5/20 = 7/20
If 7/20 is 21 points, we can find out how much points takes up 1/20 of the fraction. We do this by dividing 21 by 7.
21 / 7 = 3
So 1/20 = 3
Now we multiply 3 by 20, which is 60. So therefore the total amount of points scored by the team is 60. Brian scored 1/10 of 60, which is 6. So he scored 6 points. Joe scored 1/4 of 60, which is 15. So Joe scored 15 points. Hope this helps.
What is the approximate carrying capacity of the
population?
In which year, did the population reach the carrying capacity?
About how many years did it stay at carrying capacity?
Answers
Answer:
The carrying capacity of a population refers to the maximum number of individuals that a particular ecosystem can sustainably support over the long-term. It is affected by factors such as the availability of resources like food, water, and shelter, as well as disease, predation, and other environmental factors.
The carrying capacity of a population can vary over time and depends on many different variables, including the species in question, the environment it lives in, and the management practices that are in place. Therefore, it is not possible to determine the approximate carrying capacity of a population without specific details about the particular species and ecosystem in question.
Similarly, it is impossible to determine when a population reached its carrying capacity or how long it stayed there without specific information about the population and its environment. Population data over time can help to estimate changes in population size and to understand how it may have been impacted by different factors, but a detailed analysis of the specific ecosystem and species is required to make accurate predictions about carrying capacity and population dynamics.
Step-by-step explanation:
What is the forecast for May using a five-month moving average?(Round answer to the nearest whole number.) Nov. 39 Dec. 27 Jan. 40 Feb. 42 Mar. 41 April 47
A. 43 B. 47 C. 52 D. 38 E. 39
Answers
The forecast for May using a five-month moving average is 39 (Option E).
Moving average is used for smoothing out time series data to find any trends or cycles within the data. A five-month moving average is the average of the past five months. To calculate the moving average, add up the sales for the previous five months and divide it by five.
According to the question, the sales for the previous five months are: Nov. 39 Dec. 27 Jan. 40 Feb. 42 Mar. 41 April 47
We have to add the sales of these five months, which gives:
27 + 40 + 42 + 41 + 47 = 197
To find the moving average for May, we divide this sum by 5:
197 / 5 = 39.4
Since we have to round the answer to the nearest whole number, we round 39.4 to 39, which is option E.
Learn more about Moving average here: https://brainly.com/question/28495879
#SPJ11
how would you explain the difference between qualitative and quantitative data sources? how would you explain the difference between qualitative and quantitative data sources?
Answers
Qualitative data is used to represents the qualities , intention of human behavior and is basically based on observations and interview using open ended questions where as quantitative data is based on the statistical and mathematical data.
Explanation:
Difference between Quantitative and Qualitative data sources:
Qualitative data sources:
It represents the subjective approachBased on open-ended question.It represents the human behavior.Quantitative data sources:
It represents the objective approach.Based on Statistical and mathematical data.Represents using graphs.Therefore, qualitative data is used to represent the human behavior while quantitative data is for statistical and mathematical data.
Learn more about qualitative data here
brainly.com/question/12929865
#SPJ4
What is the solution to the equation e3×=12? Round your answer to the nearest hundredth.
Answers
Answer: x=1.09
Step-by-step explanation:
To solve for x, we can take the natural logarithm of both sides of the equation:
ln(e^(3x)) = ln(12)
Using the property of logarithms that ln(e^y) = y, we can simplify the left side to:
3x = ln(12)
Then, we can divide both sides by 3 to solve for x:
x = (1/3)ln(12)
Using a calculator to evaluate ln(12) and round to the nearest hundredth, we get:
x ≈ 1.09
Answer: x=0.83
Step-by-step explanation: buddy was wrong
Find the linear approximation, L(x), of f(x) = sin(x) at x = pi/3.
L(x) =__________
Use the linear approximation to approximate sin(5pi/12) (Round your answer to four decimal places.)
L(5pi/12) = _______
Answers
The linear approximation of sin(5π/12) is approximately 0.9035.
How to find linear approximation?The linear approximation of f(x) = sin(x) at x = π/3 can be found using the formula:
L(x) = f(a) + f'(a)(x-a)
where a =π/3, f(a) = sin(π/3) = √(3)/2, and f'(x) = cos(x), so f'(a) = cos(π/3) = 1/2.
Plugging these values into the formula, we get:
L(x) = √(3)/2 + (1/2)(x-π/3)
L(5π/12) can be approximated using this linear approximation:
L(5π/12) = √(3)/2 + (1/2)(5π/12 - π/3) = √(3)/2 + (1/2)(π/12)
Simplifying this expression gives:
L(5π/12) = √(3)/2 + π/24 ≈ 0.9035
Therefore, the linear approximation of sin(5π/12) is approximately 0.9035.
Learn more about Linear approximation
brainly.com/question/30881351
#SPJ11
Solve 0.5(-2+4d)-2d=-13 for d.
Answers
Answer:
No solution---------------------
Solve in below steps:
0.5(-2 + 4d) - 2d = - 13 Distribute- 1 + 2d - 2d = - 13 Simplify- 1 = - 13No solutions as we ended up with false equality.
Answer:
no solution
Step-by-step explanation:
0.5 ( -2 + 4d ) - 2d = -13
Solve the brackets.
-1 + 2d - 2d = -13
The term "-2d" cancels out, leaving us with:
-1 = -13
Since this equation is not true (the left side does not equal the right side), there is no solution to the equation.
In other words, there is no value of "d" that satisfies the equation.
Drag and drop the numbers into the boxes to create an expression that is equivalent to the given expression.
5(c+6)
5
6
30
36
—c+—
PLSSSSS HELP ASAP WITH MARK BRAIN LIST
Answers
Answer:
5c + 30 is correct, i hoped this helped
A probability is a numerical value that indicates the chance, or likelihood, of a specific event occurring.
Select one:
True
False
Answers
This statement is true
A probability is a numerical value that indicates the chance, or likelihood, of a specific event occurring. Probability is the measure of the likelihood of a random event happening, and it is expressed as a number between 0 and 1, with 0 implying that the event would never occur and 1 implying that it is certain to happen.
The probability of an event happening is referred to as its likelihood. Probability can be expressed as a fraction, percentage, or decimal, and it is a vital tool in statistics. It is frequently utilized in mathematics to estimate real-world situations that involve random variables such as coin flips, weather patterns, stock market trends, and even sporting events.
Learn more about probability
https://brainly.com/question/31828911
#SPJ11
PLEASE HELP!!
just look at the picture
Answers
Answer:
its the math that solve
Step-by-step explanation: