Answer:
A. 60 degrees
Step-by-step explanation:
The measure of x in the diagram is (A) 60 degrees
From the figure, both angles are corresponding angles.
So, we have:
x + 20 = 80 --- Corresponding angles are equal
Subtract 20 from both sides
x = 60
Hence, the measure of x in the diagram is (A) 60 degrees
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Cal has 3 black pens and 7 blue pens. What is the ratio of the number of black pens she has to the number of blue pens she has?
Answer: 10 pens
Step-by-step explanation: Because you have to add the 3 black pens to 7 blue pens = 10
Solve the given differential equation:
xy''+y'=0
usually if it was the form (x^2)y''+xy'+5y=0, you could then assume (r^2)+(1-1)r+5=0
how do i start/solve this?
The solution to the given differential equation is \(y = a_0x^{[0]} + a_1x^{[1]} + a_2x^{[2]}\), where a_0, a_1, and a_2 are constants.
How to solve the differential equationTo fathom the given differential equation, xy'' + y' = 0, we will begin by expecting a control arrangement of the frame y = ∑(n=0 to ∞) a_nx^n, where a_n speaks to the coefficients to be decided.
Separating y with regard to x, we get:
\(y' = ∑(n=0 to ∞) a_n(nx^[(n-1))] = ∑(n=0 to ∞) na_nx^[(n-1)]\)
Separating y' with regard to x, we get:
\(y'' = ∑(n=0 to ∞) n(n-1)a_nx^[(n-2)]\)
Presently, we substitute these expressions for y and its subsidiaries into the differential condition:
\(x(∑(n=0 to ∞) n(n-1)a_nx^[(n-2))] + (∑(n=0 to ∞) na_nx^[(n-1))] =\)
After improving terms, we have:
\(∑(n=0 to ∞) n(n-1)a_nx^[(n-1)] + ∑(n=0 to ∞) na_nx^[n] =\)
Another, we compare the coefficients of like powers of x to zero, coming about in a boundless arrangement of conditions:
For n = 0: + a_0 = (condition 1)
For n = 1: + a_1 = (condition 2)
For n ≥ 2: n(n-1)a_n + na_n = (condition 3)
Disentangling condition 3, we have:
\(n^[2a]_n - n(a_n) =\)
n(n-1)a_n - na_n =
n(n-1 - 1)a_n =
(n(n-2)a_n) =
From equation 1, a_0 = 0, and from equation 2, a_1 = 0.
For n ≥ 2, we have two conceivable outcomes:
n(n-2) = 0, which gives n = or n = 2.
a_n = (minor arrangement)
So, the solution to the given differential equation is \(y = a_0x^{[0]} + a_1x^{[1]} + a_2x^{[2]}\), where a_0, a_1, and a_2 are constants.
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19. Write the slope-intercept form of the line described in the following:Perpendicular to x + 4y = 12 and passing through (7, -3)
The Slope-Intercept form of an equation of the line is:
\(y=mx+b\)Where "m" is the slope and "b" is the y-intercept.
Given this line:
\(x+4y=12\)You need to solve for "y" in order to write it in Slope-Intercept form:
\(\begin{gathered} 4y=-x+12 \\ y=\frac{-1}{4}x+\frac{12}{4} \\ \\ y=-\frac{1}{4}x+3 \end{gathered}\)So you can identify that the slope of that line is:
\(m_1=-\frac{1}{4}\)By definition, the slopes of perpendicular lines are opposite reciprocals. Then, you can determine that the slope of the other line is:
\(m_2=4\)Knowing that it passes through this point:
\(\mleft(7,-3\mright)\)You can substitute the coordinates into the equation and solve for "b":
\(\begin{gathered} -3=4(7)+b \\ -3-28=b \\ b=-31 \end{gathered}\)Knowing the value of "b" and knowing the slope, you can determine that the equatio of the line in Slope-Intercept for
Please help I have a learning disablity and need help with this PLEASE PLEASE answer this it is due in 1 hour i have the image it is not hard if you answer I will mark you as brainliest. If this is not answerd in the next hour I will have a 0 as my final grade and have to redo 6th grade so please everyone I know knows I am not smart so please
What percent of the square is shaded in? When you type your answer
do not include a % sign.
Answer_________
The percent of the square shaded is 37.5 without including the % sign.
What percent of the square is shaded?The square is divided into 4 equal parts
1/4 of the square is fully shaded
The other 1/4 is shaded half
Hence,
When the square is divided into 8 equal parts, 3 parts are shaded
Percent of square shaded= Parts shaded/ Total parts × 100
= 3/8 × 100
= 0.375 × 100
= 37.5%
Ultimately, 37.5 is the percent of the square shaded.
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If the half life of a radioactive
substance is 5.3 years and there are
8.4 grams present initially, when will
there be 1 gram remaining?
[?] years
Use the function f(t) = Pert and round
your answer to the nearest year.
Enter
which circle of latitude or longitude has the smallest circumference?
a. the equator
b. 30 degree N
c. the prime meridian d.45 degree S
e. 80 degree S
a. The equator has the smallest circumference of all the circles of latitude or longitude.
The equator is an imaginary circle that is located at 0 degrees latitude and circles the Earth's surface at its widest point. Since the Earth is roughly spherical in shape, the equator represents the largest circle of latitude. However, it has the smallest circumference of all the circles of latitude or longitude because it is located at the widest point of the Earth, and its radius is equal to the Earth's radius.
In contrast, the circles of latitude and longitude located at higher latitudes have smaller radii and therefore larger circumferences than the equator. Similarly, circles of latitude and longitude located at lower latitudes have larger radii and smaller circumferences than the equator. Therefore, the equator has the smallest circumference of all the circles of latitude or longitude on the Earth's surface.
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which term describes the percent of voters casting ballots?
The term which is used for describing the number of voters who casted their votes using the ballots is called as voter turnout.
The process of selecting a candidate for a suitable post who takes care of the policies which will be framed for the people is called as voting. In this process, the members/ citizens casts their vote in the favor of their suitable candidate. Many times voters are not valid and their votes are considered as null and void.
The voter turnout is either the percentage of registered voters, eligible voters, or all voting-age people ( this varies from place to place depending upon the minimum voting age required). The voter turnout is also referred to the number of people who go to it or take part in it. High voter turnout is generally considered a sign of a healthy democracy.
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What was the overall shape of the distribution of soldiers’ foot lengths? About where was the center of the distribution?
The overall shape of the distribution of soldiers' foot lengths was likely symmetric or approximately bell-shaped.
The distribution of soldiers' foot lengths can be described as symmetric or bell-shaped. The majority of foot lengths cluster around the center, with fewer foot lengths deviating significantly. The center of the distribution, representing the average foot length, can be determined using the mean.
Analyzing the shape through a histogram or box plot helps identify symmetry. A symmetric shape with a peak in the middle and evenly tapering tails indicates a bell-shaped distribution.
Understanding the distribution's shape and center allows us to infer the overall characteristics of the soldiers' foot lengths.
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I need help pls! :/ anyone know the answer to this?
Answer:
I think it is a
Step-by-step explanation:
undergraduate students at a college belong to one of four groups depending on the year in which they are expected to graduate. each student must choose one of 21 differ- ent majors. how many students are needed to assure that there are two students expected to graduate in the same year who have the same major?
Maximum number of distinct majors/groups: 84 therefore, the 85th student must be the same as one of the 84 students.
What would a typical graduation date be?Date of anticipated graduation: May 15, 2020, or Spring 2020 for graduation (expected). Instead of expected or anticipated, you can use the word pending if you're presently working to finish your final semester.
Do I need to mention my anticipated graduation date on my resume?Employers may be able to see that you are actively pursuing your degree even though you haven't graduated by seeing your anticipated graduation date on your resume.
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Jason worked 3 hours more than Keith. Jason worked 12 hours. Which equation represents this situation, if k is the numbers of hours Keith worked?
The equation that represents this situation, if k is the number of hours Keith worked is C. k + 3 = 12
A statement that affirms the equivalence of two expressions that are joined by the equals sign "=" is known mathematically as an equation. If Jason worked 12 hours, 3 more than Keith did, and k is the amount of hours Keith worked, then k + 3 = 12 is the proper equation to reflect the circumstance.
According to this calculation of the equation, the total number of hours Keith worked (k) plus the additional three hours equals 12, which agrees with the fact that Jason put in three more hours of labour than Keith did and worked for a total of 12 hours.
Complete Question:
Jason worked 3 more hours than Keith. Jason worked 12 hours. Which equation represents this situation, if k is the number of hours Keith worked?
A. 12 + k = 3
B. 12k = 3
C. k + 3 = 12
D. 3k = 12
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Find the distance between the two points.
Imagine a right triangle
connecting the two points.
(-3,2) (2,-2)
The distance between the two points is sqrt(41) units.To find the distance between two points, we can use the distance formula:d = sqrt((x2 - x1)^2 + (y2 - y1)^2)
where (x1, y1) and (x2, y2) are the coordinates of the two points.
In this case, the two points are (-3, 2) and (2, -2). We can plug these values into the formula:
d = sqrt((2 - (-3))^2 + (-2 - 2)^2)
Simplifying:
d = sqrt((2 + 3)^2 + (-4)^2)
d = sqrt(25 + 16)
d = sqrt(41)
So, the distancedistance between the two points is sqrt(41) units.
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Can someone answer this for me?
Answer: as per question statement
we need to set up an equation first
p(t)=1200e(0.052*t)
they have given that it is relative to 1200 that means it starts to increase from 1200 at t=0 initially 1200 bacteria were present
we need to find population at t=6
we need to plug t=6 in p(t).
P(6)=1200e(0.052*6)=1639.38
1638.38 bacteria were present at that time t=6
Step-by-step explanation: I hope this helps.
Use the Shell Method to compute the volume of the solid obtained by rotating the region underneath the graph of y=1/√(x^2+6) over the interval [0,7], about x=0.
Using the Shell Method, the volume of the solid obtained by rotating the region underneath the graph of y=1/√(x^2+6) over the interval [0,7], about the line x=0, is approximately 125.979 cubic units.
To find the volume using the Shell Method, we divide the region into infinitely thin vertical strips, or shells, and integrate their volumes. Each shell has a height equal to the function y=1/√(x^2+6) and a thickness of dx.
The radius of each shell is the distance from the axis of rotation (x=0) to the corresponding x-coordinate. In this case, the radius is simply x.
The volume of each shell can be calculated as 2πx * (1/√(x^2+6)) * dx, where 2πx represents the circumference and (1/√(x^2+6)) represents the height.
To find the total volume, we integrate the volume expression with respect to x over the interval [0,7]:
V = ∫[0,7] 2πx * (1/√(x^2+6)) * dx.
Evaluating this integral yields approximately 125.979 cubic units.
Therefore, the volume of the solid obtained by rotating the region underneath the graph of y=1/√(x^2+6) over the interval [0,7], about the line x=0, is approximately 125.979 cubic units.
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t-models, part II Using the t tables, software, or a calculator, estimate
a) the critical value of t for a 95% confidence interval with df = 7.
b) the critical value of t for a 99% confidence interval with df = 102.
The critical value of t with df as 7 is 2.36, and the critical value of t with df as 102 is 2.62
In a hypothesis test, the critical value is a value that is used to decide whether to accept the null hypothesis or not. It is based on the level of significance that was selected, which is the highest likelihood that a Type I error could occur.
a)
On referring to the t-distribution table, which is statistical software, or a calculator to find the critical value of t for a 95% confidence interval with degrees of freedom (df) = 7. The two-tailed confidence level of 0.95 is the essential value. We discover that the crucial value of t for a 95% confidence interval with df = 7 is roughly 2.365 using a t-distribution table or program.
b)
The t-distribution table, statistical software, or a calculator are used in a similar manner to estimate the critical value of t for a 99% confidence interval with df = 102. The crucial value is equal to the 0.99 two-tailed confidence level. The crucial value of t for a 99% confidence interval with df = 102 is roughly 2.62, according to a t-distribution table or computer programme.
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163, 159, 155, 151.... What will the 23rd term in this sequence be? Enter only the number in the box.
The 23rd term in the sequence 163, 159, 155, 151, ... is 75.
An arithmetic sequence is a sequence of numbers where the difference between any two consecutive terms is constant. This means that you can find any term in the sequence by adding the common difference to the previous term.
The general formula for an arithmetic sequence is:
a_n = a_1 + d(n - 1)
Use code with caution. Learn more
where:
a_n is the nth term in the sequence
a_1 is the first term in the sequence
d is the common difference
n is the number of the term
The sequence is a decreasing arithmetic sequence, which means that each term is less than the previous term by a constant amount. In this case, the constant amount is 4. This is a decreasing arithmetic sequence, where each term is 4 less than the previous term. The first term is 163, so the 23rd term will be 163 - 4 * 22 = 75.
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What is the equation, in slope-intercept form, of the line that is perpendicular to the line y-4= -2/3 (x-6) and passes through the point (-2, -2)?
Oy=-2/3x-10
Oy=-2/3x+10
Oy=x3/2x-1
O y=3/2x+1
Answer:
The answer is option D.
Equation of a line is y = mx + c
m = slope
c = intercept on y axis
y-4= -2/3 (x-6)
y = -2/3x + 4 + 4
y = -2/3x + 8
From the above equation
m= -2/3
Since the lines are perpendicular the slope of the line is the negative inverse of the original line.
so m = 3/2
Equation of the line using point (-2 , -2) is
y + 2 = 3/2(x+2)
y = 3/2x + 3 - 2
y = 3/2x + 1
That's the last option
Hope this helps
The linear equation with the given characteristics is given by:
\(y = \frac{3}{2}x + 1\)
What is the equation of a line in slope-intercept form?It is given by:
y = mx + b.
In which:
m is the slope.b is the y-intercept.When two lines are perpendicular, the multiplication of their slopes is -1, hence:
\(-\frac{2}{3}m = -1\)
\(2m = 3\)
\(m = \frac{3}{2}\)
Then:
\(y = \frac{3}{2}x + b\)
It passes through the point (-2, -2), hence:
\(-2 = \frac{3}{2}(-2) + b\)
\(-3 + b = -2\)
\(b = 1\)
Hence, the equation is:
\(y = \frac{3}{2}x + 1\)
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Lopez acquired a building on June 1, 2016, for $1,000,000. Calculate Lopez’s cost recovery deduction for 2021 if the building is: a. Classified as residential rental real estate. b. Classified as nonresidential real estate
The annual cost recovery deduction would be $25,641 ($1,000,000 ÷ 39).
a. If the building is classified as residential rental real estate, the cost recovery deduction for 2021 would be calculated using the straight-line method of depreciation over a 27.5 year recovery period, since that is the applicable recovery period for residential rental real estate.
To calculate the annual cost recovery deduction, you would divide the building's depreciable basis (which is its original cost minus the value of the land) by 27.5.
So, assuming that the value of the land is negligible, the depreciable basis for the building would be $1,000,000, and the annual cost recovery deduction would be $36,364 ($1,000,000 ÷ 27.5).
b. If the building is classified as nonresidential real estate, the cost recovery deduction for 2021 would be calculated using the straight-line method of depreciation over a 39 year recovery period, since that is the applicable recovery period for nonresidential real estate.
Using the same depreciable basis of $1,000,000 (assuming again that the value of the land is negligible), the annual cost recovery deduction would be $25,641 ($1,000,000 ÷ 39).
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how many 5 letter words can be formed from the letters of the word formulated if each must contain 2 vowels and 3 consonants and if there must be a vowel at the end of each word
There are 36 '5' letter words that can be formed from the letters of "formulated" with 2 vowels, 3 consonants, and a vowel at the end.
The word "formulated" has 4 vowels and 6 consonants. If each 5 letter word must contain 2 vowels and end with a vowel, there are two options for the last letter, "e" or "a". To form a 5 letter word with 2 vowels and 3 consonants, we need to choose 2 vowels from the 4 vowels in "formulated" and 3 consonants from the 6 consonants in "formulated". The order of the chosen letters does not matter, as we will arrange them later. Thus, we can use the combination formula to find the number of ways to choose the vowels and consonants: C(4, 2) * C(6, 3) = 6 * 20 = 120. Finally, we need to arrange these 5 letters in a specific order: consonant-consonant-vowel-consonant-vowel. There are 3 choices for the first consonant, 2 choices for the second consonant (since it cannot be the same as the first), 2 choices for the vowel (either "e" or "a"), 3 choices for the third consonant (since it cannot be the same as the first or second), and 1 choice for the final vowel. Thus, the total number of 5 letter words that can be formed from the letters of "formulated" with 2 vowels, 3 consonants, and a vowel at the end is 3 * 2 * 2 * 3 * 1 = 36.
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A baker puts a chocolate cake in the oven to bake for 30 minutes. Let f(t) = 0.25 + 65 be the temperature of the cake t minutes
after you placed it in the oven. Which of the following statements are true for the given function?
LET ME KNOW ASAP
Answer:
Options (1) and (5)
Step-by-step explanation:
Given function 'f' representing the relation between temperature of the oven after 't' minutes is,
f(t) = 0.25t² + 65
Option (1).
f(0) means that when the cake was placed in the oven, its temperature was 65°.
True.
f(0) = 0 + 65 = 65
Option (2).
To find the temperature after 15 minutes, we need to find 't' when f(t) = 15
False.
We have to find the value of f(15) to find the temperature of the oven after 15 minutes.
Option (3).
Temperature of the cake was 81° F when it was kept in the oven for 8 minutes.
Given statement is False.
It should be represented by,
f(8) = 81
Option (4).
After 10 minutes,the temperature of the cake was 71.25 degree F.
False.
By putting t = 10 in the function,
f(10) = 0.25(10)² + 65
= 25 + 65
= 90° F
Option (5).
The temperature of the cake when the baker takes it out of the oven, can be represented by,
f(30) = 290
True.
f(30) = 0.25(30)² + 65
= 225 + 65
= 290
2x + 7 > 11
Please and thank you
Answer:
x = > 2
Step-by-step explanation:
This is the answer because:
1) >2 means x is any number greater than 2
2) For example, 2 x 3 = 6 + 7 = 13
3) 13 is greater than 11
Hope this helps!
Paul received a $15 tip on a meal that cost $120. What percent of the meal cost was the tip?.
Answer:
12.5%
Step-by-step explanation:
12.5% of 120 is 15 so if you take 15 divided by 120 you would get 0.125 and turned into a percentage is the 12.5%
A piece of stpne on Planet Y weighs seven pounds, but on Earth it weighs only 4 pounds.
What would a 130-pound Earthling weigh on Planet Y?
Answer:
227.50
Step-by-step explanation:
There are 7 red, 9 blue, 2 yellow and 4 green marbles in a bag. You make 2 draws from the bag without returning the first marble selected back to the bag. What is the possibility you select a red then green marble at random?
Answer:
11 out of 22 marbles
Step-by-step explanation:
Just add up the red and green marbles to get the top # and then add up all the colored marbles to get the bottom #.
Hope this helps :) Please give brainliest!
If ABCD is dilated by a factor of 1, the
3,
coordinate of D' would be:
D
D'= ([?],[ ])
The location of the coordinate of the point D' following the dilation of the quadrilateral ABCD by a scale factor of 1/3 would be; (2, -1)
What is a dilation transformation?A dilation transformation is one in which the image obtained from the original geometric figure is resized proportionately by a scale factor.
The coordinates of the vertices of the quadrilateral ABCD are;
A(-3, -3), B(0, 0), C(6, 3), and D(6, -3)
The scale factor of the required dilation = 1/3
The coordinates of the point (x, y) following a dilation by a scale factor of k with the center of dilation at the origin is; (k·x, k·y), therefore;
The coordinates of the image, D', of the point D(6, -3), following a dilation of the quadrilateral ABCD by a scale factor of (1/3) with the center of dilation located at the origin, will be;
Location of D' = ((1/3)×6, (1/3)×-3) = (2, -1)
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HW 3: Problem 9 Previous Problem List Next (1 point) Suppose that X is normally distributed with mean 110 and standard deviation 21. A. What is the probability that X is greater than 145.28? Probabili
The probability that X is greater than 145.28 is approximately 0.0465.
Given that X is normally distributed with mean (μ) of 110 and standard deviation (σ) of 21. We are to find the probability that X is greater than 145.28. It can be calculated as follows: We can calculate the Z-score value with the help of the following formula, Z = (X - μ) / σWhere X is the random variable value, μ is the mean, and σ is the standard deviation. Substituting the values in the formula, we get: Z = (145.28 - 110) / 21Z = 1.68476 Using the Z-table, we can find the probability that X is greater than 145.28 as follows: From the Z-table, we get: P(Z > 1.68) = 0.0465
Probability refers to potential. A random event's occurrence is the subject of this area of mathematics. The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events. The degree to which something is likely to happen is basically what probability means. You will understand the potential outcomes for a random experiment using this fundamental theory of probability, which is also applied to the probability distribution. Knowing the total number of outcomes is necessary before we can calculate the likelihood that a specific event will occur.
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sid jumped 21 times every 35 hours. at that rate, how long in hours , will it take to jump 6 times
Answer:
10 hours......is answer
what is the sum of the infinite geometric series? –288 –216 –144 –72
The sum of the infinite geometric series –288 –216 –144 –72 is -1152.
The sum of an infinite number of terms having a constant ratio between successive terms is called as infinite geometric series.
Given series, -288, -216, -144, -72, ...
The sum of the infinite geometric series can be calculated as:
Sum = \(\dfrac{a}{1 -r}\)
Here, 'a' is the first term of the series and 'r' is the common ratio.
a = -288
The common difference can be calculated as:
r = \(\dfrac{(-216)}{(-288)}\)
= \(\dfrac{3}{4}\)
Substitute the values in the sum formula:
Sum = \(\dfrac{-288}{1 - \dfrac{3}{4}}\)
It can be simplified as:
Sum = -288 \(\times\) 4
= -1152
So, the sum of the infinite geometric series is -1152.
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Develop a single formula you can use to find the profit earned by both the Alcone Company & Besame Beauty for their lip color. Explain why your formula will work for both companies
Answer:
I have no idea!!!!!!!!!!!!!
PLEASE HELP!! PLEASE AND THANK YOU!
Answer:
50.05 feet
Step-by-step explanation:
The tower have 32.57 feet, and you can find it using the same method than I used in your other question
Now you find the length of the guy wire using the Pythagorean theorem:
38²+32.57² = guy wire²
2504.8 = guy wire²
guy wire = √2504.8
guy wire = 50.05 feet