Answer: 12n + 60
Step-by-step explanation:
So first you have to distribute the 5 in the parentheses.
(5)(n + 12) = 5n + 60
5n + 60 + 7n
Then add like terms.
12n + 60
Use algebraic methods to find as many intersection points of the following curves as possible. Use graphical methods to identify the remaining intersection points. R = 6 sin theta and r = 6 cos theta the intersection point(s) is/are_______
(Type an ordered pair. Type exact answer for each coordinate, using phi as needed. Type the coordinate for theta in radians between 0 and phi. Use a comma to separate answers as needed)
The intersection points are (6, 6) and (-6, -6).
What is Intersection points?
The point at which two lines or curves intersect is referred to as the point of intersection. The point at which two curves intersect is crucial because it is the point at which the two curves take on the same value.
The given curves are the polar equations of two circles with radii 6. To find their intersection points, we can set the two equations equal to each other and solve for Ф.
6 sin(Ф) = 6 cos(Ф)
Dividing both sides by 6 and rearranging terms, we get:
tan(Ф) = 1
This equation has infinitely many solutions, but we are only interested in those that lie in the interval [0, π/2].
Ф = π/4 satisfies this condition and corresponds to the point (6, 6) in Cartesian coordinates.
Since the two curves are circles, they are symmetrical about the origin. Therefore, we can deduce that the other intersection point is (-6, -6).
Therefore, the intersection points are (6, 6) and (-6, -6).
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Can someone help please?
Top
Which of the numbers given are rational?
Select all that apply:
√3300
2.6228
4.137183
√9
9.327925...
From the given numbers, 2.6628, 4.17183 and √9 are the rational numbers.
Rational numbers are the numbers that are in the form of p/q where q is not equal to zero that is q≠0. Rational numbers can be expressed as a fraction where both numerators and denominator are whole. When these fractions are further divided, the result will be in decimal form, which may be either terminating decimal or the repeating decimal
Irrational numbers are numbers that cannot be written as simple fractions but can be written in decimal form. It has endless non-terminating digits after the decimal point.
Now according to the question ,
i) √3300 = 57.4456…. as it has endless non-terminating digits after the decimal point. It is an irrational number.
ii) 2.6628 is a rational number as it has a terminating decimal.
iii) 4.137183 is also a rational number as it has terminating decimal.
iv) √9 = 3 is a rational number as it is a perfect square and can be written as fraction.
v) 9.327925…. is a irrational as it has endless non-terminating digits after the decimal point.
Hence 2.6628, 4.17183 and √9 are the rational numbers.
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Which of the following is the fourth vertex needed to create a rectangle with vertices located at (−15, 3), (−15, −6), and (25, −6)?
(−6, 25)
(−25, −3)
(6, −25)
(25, 3)
The missing fourth vertex needed to create a rectangle is (25, 3) option D.
Define the term vertices?Vertices (singular: vertex) are the corners or points where two or more lines, edges, or curves intersect and form an angle.
Here, the width of one side of the rectangle;
⇒ +3 - (-6) = 9 unit (left side y-coordinates)
Similarly the length of the rectangle;
⇒ 25 - (-15) = 40 unit (up-side x-coordinates)
Since a rectangular shape has two sets of equal sides of equivalent width (y-coordinates) and length (x-coordinates), we realize that the missing fourth vertex should be 9 units and 40 units over the point (25, -6). and (-15, 3)
So, we add 9 to the y-coordinate of (25, -6) and add 40 to the x-coordinate of (-15, 3) to get the missing vertex:
⇒ (25, -6+9) = (25, 3)
⇒ (-15+40, 3) = (25, 3)
Therefore, the missing fourth vertex is (25, 3)
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Question 6 of 10
A line of best fit was drawn for 6 data points. What is the maximum number
of these data points that may not actually be on the line?
OA. 6
B. 3
O C. 4
OD. 5
SUBMIT
find the inverse of f(x)=x^2-3 and state whether the inverse is a function or not.
Since f(x) = x^2 - 3 is not a one-to-one function, it does not have an inverse. The graph of this function does not pass the horizontal line test.
If you tried to algebraically find the inverse, the work would look like this:
\(\begin{aligned}y &= x^2 - 3\\[0.5em]x &= y^2 - 3 ~~~~~~ \text{swapping $x$ and $y$}\\[0.5em]x+3 &= y^2 \\[0.5em]\pm\sqrt{x+3} &= y~~~~~~\text{using the square root property}\end{aligned}\)
Because the original function is not one-to-one, when you try to find the inverse, there is no unique solution, meaning the inverse equation is not a function. It won't pass the vertical line test.
as you already know, to get the inverse of any expression we start off by doing a quick switcheroo on the variables and then solving for "y", let's do so.
\(\stackrel{f(x)}{y}~~ = ~~x^2 - 3\hspace{5em}\stackrel{\textit{quick switcheroo}}{x~~ = ~~y^2 - 3} \\\\\\ x+3=y^2\implies \sqrt{x+3}\stackrel{ f^{-1}(x) }{=y}\)
now, is it a function or not?
well, is really the graph of a horizontal parabola, that has symmetry over the x-axis, so since we have a mirror image of it above and below the x-axis, it can't be a function, because a function will need to pass the vertical line test, this one doesn't pass it.
Did i do this right?
Answer:
-7 = x +6
Step-by-step explanation:
Answer:
Step-by-step explanation:si
The scale factor of two similar cylinders is 5:2. The volume of the smaller cylinder is 28 m3. What is the volume of the larger cylinder? Question 8 options: 350 m3 700 m3 437.5 m3 175 m3 70 m3
With a scaling ratio of 5:2, the larger cylinder's volume is (C) 70m³.
What is the scale factor?A scale factor is used when a shape is enlarged and each side is multiplied by the same quantity.
This number represents the scaling factor. Map scale factors are used to show distances between locations accurately.
The new shape created by scaling the original shape is twice as big when the scale factor is 2.
Thus, calculate the larger cylinder's volume as follows:
x/5 = 28/2
2x = 28*5
2x = 140
x = 70m³
Therefore, with a scaling ratio of 5:2, the larger cylinder's volume is (C) 70m³.
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Complete question:
The scale factor of two similar cylinders is 5:2. The volume of the smaller cylinder is 28 m3. What is the volume of the larger cylinder?
Question 8 options:
A. 700 m3
B. 350 m3
C. 70 m3
D, 437.5 m3
E. 175 m3
Answer: 70m^3
Step-by-step explanation:
I took the test
karla is offered a job as parking lot attendant. the job will pay 2400 per month, paid biweekly. along with the base salary, the company offers to pay half the cost of medical insurance and will match karlas contribution to a retirment plan up to a total of 1500. if the full cost of the medical insurance is 450 a month and karla plans to contribute the full 1500 every year tpa retirement plan, what is the actual annual value of this job to karla?
The actual annual value of this job to Karla is 33000.
What are arithmetic operations?
Arithmetic operations is a branch of mathematics that studies numbers and the operations on numbers that are useful in all other branches of mathematics. It consists primarily of operations like addition, subtraction, multiplication, and division.
We have,
the job will pay 2400 per month,
if the full cost of the medical insurance is 450 a month and Karla plans to contribute the full 1500 every year tpa retirement plan,
the actual annual value of this job to Karla is:
2400 per month
annual value = 2400 * 12 = 28,800
the medical insurance is 450 a month
half the cost of medical insurance is 225 a month
annual value = 225 * 12 = 2700
the full 1500 every year tpa retirement plan,
So, the total value is:
= 28,800 + 2700 + 1500
= 33000
Hence, the actual annual value of this job to Karla is 33000.
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In a random sample of 100 students from a large high school, 37 regularly bring a reusable water bottle from home. Which of the following gives the correct value and interpretation of the standard error of the sample proportion? (a) In samples of size 100 from this school, the sample proportion of students who bring a reusable water bottle from home will be at most 0.095 from the true proportion. (b) In samples of size 100 from this school, the sample proportion of students who bring a reusable water bottle from home will be at most 0.048 from the true proportion. is ne (c) In samples of size 100 from this school, the sample proportion of students who bring a reusable water bottle from home typically varies by about 0.095 from the true proportion.
(d) In samples of size 100 from this school, the sample proportion of students who bring a reusable water bottle from home typically varies by about 0.048 from the true proportion (e) There is not enough information to calculate the standard error.
The standard error tells us how much we can expect the sample proportion to vary from the true proportion in repeated samples of the same size. Option (d) correctly states that "In samples of size 100 from this school, the sample proportion of students who bring a reusable water bottle from home typically varies by about 0.048 from the true proportion." This means that if we were to take many samples of 100 students from the same school and calculate the proportion of students who bring a reusable water bottle from home in each sample, about 95% of the sample proportions would fall within +/-0.048 of the true proportion.
What is the best interpretation of the standard errorThe correct option is (d) "In samples of size 100 from this school, the sample proportion of students who bring a reusable water bottle from home typically varies by about 0.048 from the true proportion."
The standard error of the sample proportion can be calculated using the formula:
SE = √[p*(1-p) / n]
where p is the sample proportion and n is the sample size.
In this case, the sample proportion is 37/100 = 0.37 and the sample size is 100. Plugging in these values, we get:
SE = sqrt[0.37*(1-0.37) / 100] = 0.048
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What is the definition of Antigen?
Please help
Answer:
a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
what do i need to subtract from 83/10 to make 8
Answer:
0.3
Step-by-step explanation:
Let x be what you need to subtract
\(\frac{83}{10} = 8.3\) Plug x in: 8.3 - x = 8Re-arrange: 8.3 - 8 = x8.3 - 8 = 0.3So, you need to subtract 0.3 from 83/10 to make 8.I hope this helps!
Answer:
3/10
Step-by-step explanation:
83/10 - 3/10 = 80/10 = 8
Find the radius of a circle that has an area of 121 pi ft2.
Answer: 11
Step-by-step explanation:
area = 121 pi = pi r^2 Divide both sides by pi
121 = r^2
r= 11
Which container holds more, a half-gallon milk jug or a 2-liter juice bottle
Answer:
1 gallon=3.79 liters 2 liter juice bottle would hold more
Step-by-step explanation:
The unit circle has radius 1
It is an algebraic equation. I want answers and very very brief explanations.
The expressions are simplified to;
1. 5x + 11
2. x - 11
3. x - 11y
4. 4x + 20
5. 5x² - y²
6. 5x² - 5y² - 5y
7. -12y²
8. 4x + 20
9. 4x - 20
10. 8x² - 20xy
How to simply the algebraic expressionsTo simply the algebraic expression, we have to expand the bracket, collect the like terms and then add or subtract them.
From the information given, we have that;
1. 3x + 5 + 2x + 6
collect and add like terms
5x + 11
2. 3x - 5 - 2x - 6
collect and add the like terms
x - 11
3. 3x - 5y - 2x - 6y
collect and add the like terms
x - 11y
4. 6x + 12 - 2x + 8
collect and add the like terms
4x + 20
5. 3x² + 5y² + 2x² - 6y²
collect and add the like terms
5x² - y²
6. 3x² - 5y² + 2x² - 6y
collect and add the like terms
5x² - 5y² - 5y
7. 6x³ - 10y³ + 4x³ - 12y²
collect and add the like terms
-12y²
8. 6(x + 2) - 2(x - 4)
expand the bracket
6x + 12 - 2x + 8
4x + 20
9. 6(x - 2) - 2(x + 4)
expand the bracket
6x - 12 - 2x - 8
4x - 20
10. 6x(x - 2y) + 2x(x - 4y)
expand the bracket
6x² - 12xy + 2x² - 8xy
8x² - 20xy
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The graph and table each show a proportional relationship between the number of miles traveled and the
advertised number of gallons of gas used for the two car models, A and B, respectively. Based on the
graph and table, car A can travel how many times the distance car B can travel when both cars use
1 gallon of gas? Write your answer as a decimal.
Enter your answer in the box
1.25
To answer this question, we need to compare the ratios of miles traveled to gallons of gas used for car A and car B when they both use 1 gallon of gas.
For car A, we can see from the graph that 50 miles are traveled for every 2 gallons of gas used, or in other words, 25 miles are traveled for every 1 gallon of gas used. Therefore, car A can travel 25 times the distance for 1 gallon of gas.
For car B, we can see from the table that 40 miles are traveled for every 2 gallons of gas used, or in other words, 20 miles are traveled for every 1 gallon of gas used. Therefore, car B can travel 20 times the distance for 1 gallon of gas.
To compare the two ratios, we can divide the ratio of miles traveled to gallons of gas used for car A by the ratio for car B:
25/20 = 1.25
Therefore, car A can travel 1.25 times the distance car B can travel when both cars use 1 gallon of gas.
Sam is filling a tank. The graph shows the amount of water (in liters) in the tank versus time ( in minutes).
According to the given graph, we have a line with a positive slope, which means it's increasing, that is, the number of water increases while the number of minutes also increases.
To find the rate of increase, we have to use the following formula
\(m=\frac{y_2-y_1}{x_2-x_1}\)Let's use the points (0,320) and (4, 640).
\(m=\frac{640-320}{4-0}=\frac{320}{4}=80\)The rate is 80 liters per minute.
At last, the amount of water in the tank at 0 minutes is 320 liters because that's the initial condition.
The figure shows four box-and-whisker plots. These represent variation in travel time for four different types of transportation from the beginning to the end of one route.
Conrad is at one end of the route. He is trying to decide how to get to an appointment at the other end. His appointment is in 30 minutes. Which type of transportation is LEAST likely to take more than 30 minutes?
a. bus
b. car
c. subway
d. train
Answer: C
Step-by-step explanation:
For box and whiskers plot the box is where the majority of the data is. the whiskers(the lines on both sides will tell you where the range of numbers lie)
The middle line in the box is the median number.
The question is worded oddly where they want least likely to be more than 30 which means which one will have less than 30. (Double negative question)
You want the majority of the data to be less than 30, which is subway. C
A random sample of 1000 people was taken. Four hundred fifty of the people in the sample favored Candidate AT. The 95% confidence interval for the true proportion of people who favor Candidate A is a. .424 to .476. b. .419 to .481. c. .40 to .50. d. .45 to .55.
Answer:
\(0.45 - 1.96 \sqrt{\frac{0.45(1-0.45)}{1000}}=0.419\)
\(0.45 + 1.96 \sqrt{\frac{0.45(1-0.45)}{1000}}=0.481\)
And the 95% confidence interval would be given (0.419;0.481). And the best option would be:
b. .419 to .481
Step-by-step explanation:
We know the following info:
\(n = 1000\) sample size selected
\(X= 450\) represent the number of people who favored Candidate AT
The sample proportion would be:
\(\hat p=\frac{450}{1000}=0.45\)
The confidence interval would be given by this formula
\(\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}\)
For the 95% confidence interval the value of \(\alpha=1-0.95=0.05\) and \(\alpha/2=0.025\), with that value we can find the quantile required for the interval in the normal standard distribution.
\(z_{\alpha/2}=1.96\)
And replacing into the confidence interval formula we got:
\(0.45 - 1.96 \sqrt{\frac{0.45(1-0.45)}{1000}}=0.419\)
\(0.45 + 1.96 \sqrt{\frac{0.45(1-0.45)}{1000}}=0.481\)
And the 95% confidence interval would be given (0.419;0.481). And the best option would be:
b. .419 to .481
based on the structure of the inhibitor and the arrow pushing mechanism from part b, propose an explanation for why this inhibitor binds more strongly to the enzyme than the natural substrate does. your answer should discuss both molecular geometry as well as charges.
The strength of binding between an inhibitor and an enzyme can depend on several factors, including molecular geometry and charges.
In this case, it is likely that the structure of the inhibitor allows it to fit more snugly into the active site of the enzyme, forming more extensive hydrogen bonds and other non-covalent interactions with the amino acid residues of the enzyme. Additionally, the inhibitor may have specific charge interactions with residues in the active site that are not present with the natural substrate. These interactions can increase the binding energy between the inhibitor and the enzyme, resulting in a stronger binding affinity than that between the substrate and the enzyme.
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sin^2 150 de grade + sin^2 60 de grade =1
\(\sf\sin^2 150^\circ + \sin^2 60^\circ = 1 \\\)
Step 1: Convert degrees to radians:
\(\sf\sin^2 \left(\frac{150\pi}{180}\right) + \sin^2 \left(\frac{60\pi}{180}\right) = 1 \\\)
Step 2: Simplify the expressions using the trigonometric identity:
\(\sf\sin^2 \left(\frac{\pi}{6}\right) + \sin^2 \left(\frac{\pi}{3}\right) = 1 \\\)
Step 3: Recall the values of sine for angles \(\sf \frac{\pi}{6} \\\) and \(\sf \frac{\pi}{3} \\\):
\(\sf\left(\frac{1}{2}\right)^2 + \left(\frac{\sqrt{3}}{2}\right)^2 = 1 \\\)
Step 4: Evaluate the squares and simplify further:
\(\sf\frac{1}{4} + \frac{3}{4} = 1 \\\)
Step 5: Combine the fractions:
\(\sf\frac{4}{4} = 1 \\\)
Step 6: Simplify the fraction:
\(\sf1 = 1 \\\)
Thus, the equation \(\sf \sin^2 150^\circ + \sin^2 60^\circ = 1 \\\) is verified and true.
Which shows how to solve the equation -4/5 x = 80 for x in one step
Answer:
\( - \frac{1}{100} \)
Step-by-step explanation:
\( - \frac{4}{5x} = 80 \\ - \frac{4}{80 } = 5x \\ x = - \frac{1}{100} \)
please show the working out as well x
Answer:
a) C=31.42 units
b) A=78.55 SQ UNITS
Step-by-step explanation:
C=2(pi)r
C=2(3.142)5
C=31.42 units
A=(Pi)r^2
A=(3.142) x 5^2
A=3.142 X 25
A=78.55 SQ UNITS
What is (3x7 + 7x5 - 3x² + 7) + (x7 - 3x5 + 2x³ + 3)?
Answer:
Hope this helps ;) don't forget to rate this answer !
Step-by-step explanation:
To solve this problem, we need to perform the indicated operations in order. The first step is to simplify the expressions inside the parentheses.
(3x7 + 7x5 - 3x² + 7) + (x7 - 3x5 + 2x³ + 3)
= (21x + 35x - 3x² + 7) + (7x - 15x + 2x³ + 3)
The next step is to combine like terms within each parentheses:
= (21x + 35x - 3x² + 7) + (7x - 15x + 2x³ + 3)
= (56x - 3x² + 7) + (-8x + 2x³ + 3)
Finally, we can add the two expressions:
= (56x - 3x² + 7) + (-8x + 2x³ + 3)
= 56x - 3x² - 8x + 2x³ + 3 + 7
= 56x - 3x² - 8x + 2x³ + 10
The final answer is 56x - 3x² - 8x + 2x³ + 10.
The average high temperatures in degrees for a city are listed.
58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57
If a value of 80.4° is added to the data, how does the range change?
The range decreases to 46°.
The range stays 48°.
The range stays 49°.
The range increases to 50°.
The range of the data of temperatures remains the same at 48°
Given data ,
Let the data of temperatures be represented as A
Now , the value of A = { 58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57 }
The range of the data R = highest value - lowest value
So , R = 105 - 57 = 48
So , the range is 48°
Now , when value of 80.4° is added to the data
R = highest value - lowest value
R = 48°
Hence , the range does not change
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what is 3,600 divided by 4
Answer:
900
Step-by-step explanation:
Find the value of x 6x-10 6x+10
Answer:
total there are 3 values of x as +5/3, -5/3 and 0
Step-by-step explanation:
the given equation is
x(6x-10) (6x+10)=0
this equation can be solved as following
=0 using the formula (a+b)*(a-b)= (a^2-b^2)
here a=6x and b=10
from here we can write either x=0 or 36x^2= 100
or x^2= 100/36 and x=0
or x= ±10/6 and x=0
therefore, total there are 3 values of x as +5/3, -5/3 and 0
PLEASE HELP ASAP!!!!
Match the metric units on the left with their
approximate equivalents on the right. Not all the
options on the right will be used.
1 meter
kilogram
1 liter
1 cup
I mile
2
pounds
1 quart
I yard
Answer:
meter - yard
kilogram - 2 pounds
liter - quart