Answer:
\(x=5,-5\)
Step-by-step explanation:
\(\\ y=\frac{x^2-3}{2}\\\\ x=\frac{y^2-3}{2}\\\\ 2x=y^2-3\\\\ y^2=2x+3\\\\ f^{-1}(x)=\pm\sqrt{2x+3}\\\\ f^{-1}(x)=\pm\sqrt{2(11)+3}\\=\pm\sqrt{25}=\pm 5\)
Which graph represents this equation? A. The graph shows an upward parabola with vertex (3, minus 4.5) and passes through (minus 1, 3.5), (0, 0), (6, 0), and (7, 3.5) B. The graph shows an upward parabola with vertex (minus 2, minus 6) and passes through (minus 5, 7), (minus 4, 0), (0, 0), and (1, 7) C. The graph shows an upward parabola with vertex (minus 3, minus 4.5) and passes through (minus 7, 3.5), (minus 6, 0), (0, 0), and (1, 3.5) D. The graph shows an upward parabola with vertex (2, minus 6) and passes through (minus 1, 7), (0, 0), (4, 0), and (5, 7)
According to the information we ca infer that the equation associated with answer is the graph shows an upward parabola with vertex (2, minus 6) and passes through (minus 1, 7), (0, 0), (4, 0), and (5, 7) (option D).
How to identify the graph that represents the equation?To find the graph that corresponds to the equation, we must check that the option matches all four criteria and has the right vertex. In accordance with the above, we must read each of the options and analyze whether they meet these requirements.
According to the previous instruction we can infer that the following function is the one that provides a correct answer to the equation:
y = x2 - 6
Additionally, we can calculate the vertex of the parabola by finding the derivative of the equation when assigned the value of 0.
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How many and of which kind of roots does the equation f(x)=x^3+2x^2+4x+8 have?
The cubic equation f(x) = x³ + 2 · x² + 4 · x + 8 has one real root and two complex roots.
What kind of roots does have a cubic equation?
In this problem we have a cubic equation and the nature of their roots must be inferred according to a algebraic method.
Cubic equations are polynomials of the form y = a · x³ + b · x² + c · x + d, there is a method to infer the nature of the roots of such polynomials: The discriminant from Cardano's method, an analytical method used to solve polynomials of the form a · x³ + b · x² + c · x + d = 0.
The discriminant is described below:
Δ = 18 · a · b · c · d - 4 · b³ · d + b² · c² - 4 · a · c³ - 27 · a² · d² (1)
Where:
There are three distinct real roots for Δ > 0.Real roots with multiplicity greater than 1 for Δ = 0.A real root and two complex roots for Δ < 0.If we know that a = 1, b = 2, c = 4 and d = 8, then the nature of the roots is:
Δ = 18 · 1 · 2 · 4 · 8 - 4 · 2³ · 8 + 2² · 4² - 4 · 1 · 4³ - 27 · 1² · 8²
Δ = - 1024
The cubic equation f(x) = x³ + 2 · x² + 4 · x + 8 has one real root and two complex roots.
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Help ASAP PLEASE !!!
3) Sin B = 5/9.43, Cos B = 8/9.43, Tan B = 5/9.43
4) Angle A is 40 degrees
5) x is 23.8 mm
What is the right triangle?
A specific type of triangle known as a right triangle has a single angle that is exactly 90 degrees, or a right angle. The sides that make up the right angle are the legs and the hypotenuse.
The Pythagorean theorem connects the side lengths of a right triangle by stating that the square of the hypotenuse's length is equal to the sum of the squares of the legs' lengths.
Cos A = 47/61
A = Cos-1(47/61)
= 40 degrees
5) The marked side can be obtained from;
Cos 28 = 21/x
x = 21/Cos 28
x = 23.8 mm
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1.Use the Pythagorean Theorem to find AD and DC. Then find AC using addition. Show your calculations.
Answer:
c=a2+b2=102+172≈19.72308
Step-by-step explanation:
a calculator bro its easy
The bag contains 20 red marbles, 30 white marbles, and 40 blue
marbles.
a. What is the ratio of red to blue marbles?
b. What is the ratio of white to red marbles?
c. If one marble is drawn from the bag, what is the probability that
marble will not be white?
When the product of 1 and 1 in subtroter fire no
of 1 and 1
a) The ratio of red to blue marbles is 1:2.
b) The ratio of white to red marbles is 3:2.
c) The probability of drawing a white marble from the bag is 33%.
What is the ratio?The ratio is the relative size of a value compared to another.
Ratios show the quantity of one variable contained in a larger variable.
On the other hand, the probability is the odds or likelihood that an expected outcome occurs given many possible outcomes.
Both ratios and probabilities can be expressed in fractions, decimals, and percentages because they are fractional values.
The number of red marbles in the bag = 20
The number of white marbles in the bag = 30
The number of blue marbles in the bag = 40
The total number of marbles in the bag = 90
a) The ratio of red to blue marbles = 20:40 = 1:2
b) The ratio of white to red marbles = 30:20 = 3:2
The sum of ratios of all marbles = 9 (2:3:4)
c) The probability of drawing a white marble from the bag = 3/9 = 0.33 or 33%
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7 + (−3) simplify
please
Answer:
4
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
When you add a negative number, you're basically subtracting it.
7 - 3 = 4
Hope this helps! Good luck :)
What is the solution to |x-2| + 3 > 17?
Ox<-12 or x > 16
Ox<-14 or x>7
O-12
O-14
Answer:
x<-12 or x>16
Step-by-step explanation:
Answer:
|x - 2| + 3 > 17
|x - 2| > 14
x - 2 < -14 or x - 2 > 14
x < -12 or x > 16
In the figure below, points D, E, and F are the midpoints of the sides of ΔABC
Suppose AB = 48, BC = 56, and DE = 32.
Find the following lengths
The values of
1. DF = 28cm
2. AC = 64 cm
3. CF = 32 cm
What is segment theorem?It states that the line segment in a triangle joining the segment of any two sides of the triangle is said to be parallel to its third side and is also half of the length of the third side.”
Therefore we can say that;
triangles , BDE, AD ,EFC, DE are congruent.
congruent triangles are triangles with equal sides and equal angles.
D = BE
BE = 56/2 = 28cm
A = DE = 32 cm
AC = 2AF
= 2 × 32 = 64 cm
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Part 1: 12% annual interest on 132000 for 8 days
Part 2: 12% annual interest on 106,750 for 20 days.
If it helps, it's a 5 year note. Assuming 365 days in a year.
The interest for Part 1 is approximately $385.10.
The interest for Part 2 is approximately $709.31.
To calculate the interest for Part 1 and Part 2The formula is as follows:
Interest is calculated as follows: Principal * Rate * Time
Where
Principal represents the starting sumThe interest rate is rateTime measures length in years.Part 1:
$132,000 is the principal.
(Decimal) Rate = 12% = 0.12
Time = 8 days/365 days.
How much interest is there in Part 1?
Interest is calculated as follows : $132,000 * 0.12 * (8/365) = $385.10
Therefore, the interest for Part 1 is approximately $385.10.
Part 2:
$106,750 as the principal
(Decimal) Rate = 12% = 0.12
Time = 20 days / 365 days.
How much interest will there be in Part 2
Interest is calculated as follows : $106,750 * 0.12 * (20/365) = $709.31
Therefore, the interest for Part 2 is approximately $709.31.
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It costs $140.00 to reline a set of brakes. The brakes last 38,000 miles. What is the cost per mile to the nearest tenth cent?
Answer:I THINK 20 pennis
Step-by-step explanation:u shouldntn trust me but if its right im happy
Answer of question 3 pls
The highest point for the quadratic function for the height of the object, h(t) = -16·t² + 224·t + 816, indicates that the interval over which the height of the object is increasing is; (-∞, 7]
What is the shape of the graph of a quadratic function?The shape of the graph of a quadratic function is a parabola.
The function for the height of the object in question 3 is; h(t) = -16·t² + 224·t + 816
Where;
t = The time in seconds
The height of the object is increasing in the interval to the left of the highest point, which can be found as follows;
The x-coordinate of the highest point of the quadratic function, f(x) = a·x² + b·x + c is; x = -b/(2·a)
Therefore, the x-coordinates of the highest point of the object is; -224/(2 × (-16)) = 7
Therefore, the height of the object is increasing in the interval; -∞ < t ≤ 7
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Please help me right now!
Thank you so much
The length of the arc KL in the given circle is 3.49 units
How to find the length of the arc KL?In a circle whose radius is R, the length of an arc defined by an angle x is given by:
Length = (x/360)*2*3.14*R
Here we know that the radius is 2 units, and the angle for the arc KL is 100°, then we can replace these values in the formula above so we get that the length of the arc is:
Length = (100/360)*2*3.14*2
Lenght = 3.49 units.
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need help 6th grade math
The grade you earn in Algebra 2 varies inversely with the amount of time you spend on your phone during classroom
instrution. If you are on your phone the entire class (90 minutes) you get a 30 in Algebra 2.
What is k, the constant of variation? type your answer...
How many minutes can you spend on your phone if you want to make a 70?(round to the nearest whole number)
type your answer...
Previous
minutes.
Next
The constant of variation is,
k = 2700
And, For minutes can you spend on your phone if you want to make a 70 is,
T = 38.6 minutes
We have to given that;
The grade you earn in Algebra 2 varies inversely with the amount of time you spend on your phone during classroom instruction.
Here, You are on your phone the entire class (90 minutes) you get a 30 in Algebra 2.
Now, We can formulate;
A = k / T
Where, A is sand for algebra 2 and T for time and k is constant of proportionality.
For A = 30, T = 90 minutes,
A = k / T
30 = k /90
k = 30 x 90
k = 2700
So, For minutes can you spend on your phone if you want to make a 70 is,
A = k / T
Plug A = 70, K = 2700
70 = 2700 / T
T = 2700 / 70
T = 38.6 minutes
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A supplier makes rulers that are supposed to be at least 0.78 inch wide. However, the machine that makes the rulers has been having problems. The table shows a sample of eight rulers and their widths. A supervisor states that if at least half of the samples are smaller than the desired width, he will call someone to fix the machine. Explain whether he needs to he needs to call. Convert 0.78 to a simplified fraction in your answer.
The true statements are:
The supervisor does not need to call someone0.78 as a simplified fraction is 39/50What are Fractions?Fractions are numbers that are represented as the quotient of two integers
From the table, we have the following measurements
39/50 inch, 4/5 inch, 76/99 inch, 1/2 inch, 26/33 inch, 9/10 inch, 2/3 inch and 7/9 inch
Convert the fractions to decimal
0.78 inch, 0.80 inch, 0.77 inch, 0.50 inch, 0.78 inch, 0.90 inch, 0.67 inch and 0.78 inch
From the list of measurements,
3 lengths are less than 0.78 inch wide
This is less than half the number of rulers (i.e 4)
Hence, the supervisor does not need to call someone
When the fractions are converted to decimal, we have:
\(\frac{39}{50} = 0.78\)
This means that:
0.78 as a simplified fraction is 39/50
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)Which statement best describes the area of the triangle shown below?
A coordinate grid is shown with a triangle.. The base is 4 units, and the height is 4 units.
It is one-half the area of a rectangle of length 4 units and width 2 units.
It is one-half the area of a square of side length 4 units.
It is twice the area of a rectangle of length 4 units and width 2 units.
It is twice the area of a square of side length 4 units.
9514 1404 393
Answer:
(b) It is one-half the area of a square of side length 4 units.
Step-by-step explanation:
The triangle described can be formed by drawing the diagonal through a square 4 units on a side. Such a diagonal cuts the square cleanly in half, so the area of the triangle is half the area of the square.
Answer:
B
Step-by-step explanation:
Hope you have a nice day! :o)
Brittany asked her classmates: How much time, in minutes, do you spend reading each day? Here are the results: 10, 20, 20, 20, 30, 30, 30, 30, 30, 40, 40, 40, 60, 60, 60 Display the data in a line plot, a histogram, and a box plot. Next to each graph, write down something you notice about the data. Upload your completed plots here.
The line plot, histogram, and box plot provide different visual representations of the reading time data. By analyzing these plots, we can observe the distribution and characteristics of the data, such as central tendency, spread, and outliers.
Line Plot:
A line plot displays data points on a number line, representing the frequency or count of each value.
In this case, the line plot will show the minutes spent reading on the x-axis and the count of students on the y-axis.
For the given data, the line plot will show 10, 20, 30, 40, and 60 on the x-axis, with the corresponding counts displayed above each value.
Histogram:
A histogram displays data distribution by dividing the range of values into intervals or bins and representing the frequency of values falling into each bin.
The histogram will have the minutes spent reading on the x-axis and the count or frequency of students on the y-axis.
The intervals will be 10-19, 20-29, 30-39, 40-49, and 50-59, with the last interval being 60+.
The height of each bar in the histogram will represent the number of students falling into each interval.
Box Plot:
A box plot (also known as a box-and-whisker plot) provides a visual representation of the distribution of data, including measures of central tendency and variability.
The box plot will show a horizontal line inside a box, with whiskers extending from the box, and possibly individual data points beyond the whiskers.
The box will represent the interquartile range (IQR), showing the middle 50% of the data.
The line within the box will represent the median value.
The whiskers will indicate the minimum and maximum values, excluding outliers.
By analyzing these plots, you can observe the central tendency, spread, and distribution of the reading time data. For example, you can identify any outliers, notice the most common reading durations, and observe any patterns or trends within the dataset.
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1.3b+7.8-3.2b plz answer, combining like terms. khan academy sucks T^T
Answer:
That'd be
1.3b -3.2b +7.8
-1.9b + 7.8
that's the simplification
don't forget to make my answer the brainliest if it's correct
Ricki took a survey in the fifth grade and found that 2/3 of the students ride the bus to school, and 1/4 of the students walk. What fraction of the fifth-grade students either ride the bus or walk to school?
Answer:
11/12 of the 5th grade ride the bus or walk to school.
Step-by-step explanation:
First you have to find a LCD (least common denominator) for both fractions which is 12.
Second you have to multiply the numerator by whatever you multiplied the denominator by for both fractions
Finally you add both fractions together and you get 11/12
Circles and angles: find f
Answer:
130°
Step-by-step explanation:
\(e = \frac{1}{2} (100 \degree - 80 \degree) \\ \\ e = \frac{1}{2} \times 20 \degree \\ \\ e = 10 \degree \\ \\ a = \frac{1}{2} \times 80 \degree \\ \\ a = 40 \degree \\ \\ by \: interior \: \angle \: sum \: postulate \: of \: a \: \triangle \\ a + e + f = 180\degree \\
40\degree + 10\degree + f = 180\degree \\
50\degree + f = 180\degree \\
f = 180\degree - 50\degree \\
\huge \red {\boxed {f = 130\degree}} \)
Please help fast! I need answers quickly.
The 3 options that are like terms are:
3x⁴ and 2x⁴
2x² and 3x²
2x and 3x
Which ones are like terms?Two terms are like terms if the powers of the variable are the same ones, so for example, if in both sides we have x², then these are like terms.
Then the options that are like terms are:
3x⁴ and 2x⁴
2x² and 3x²
2x and 3x
These are the 3 correct options.
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Julia had a bag filled with gumballs. There were 3 lemon-lime, 4 watermelon, and 6 grape gumballs. What is the correct sample space for the gumballs in her bag?
Sample space = lemon-lime, watermelon, grape
Sample space = lemon-lime, lemon-lime, lemon-lime, watermelon, watermelon, watermelon, watermelon, grape, grape, grape, grape, grape, grape
Sample space = 3, 4, 6
Sample space = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
Option B is the correct answer. The sample space = {lemon-lime, lemon-lime, lemon-lime, watermelon, watermelon, watermelon, watermelon, grape, grape, grape, grape, grape, grape}.
What is a sample space?A sample space is a set of potential results from a random experiment. The letter "S" is used to denote the sample space. Events are the subset of possible experiment results. Depending on the experiment, a sample area could contain a variety of results.
Given that, Julia had a bag filled with gumballs. There were 3 lemon-lime, 4 watermelon, and 6 grape gumballs.
Sample space contains,
3 lemon-lime: Elements in sample space are lemon-lime, lemon-lime, lemon-lime
4 watermelon: Elements in sample space are watermelon, watermelon, watermelon, watermelon
6 grape: Elements in sample space are grape, grape, grape, grape, grape, grape
In total there are 13 elements in sample space. Therefore, option B is the correct answer.
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Answer:Option B is the correct answer
Step-by-step explanation:
How many solutions does the equation have x+3=20
Answer:
1 solution
Step-by-step explanation:
To solve x+3=20
x + 3 = 20 (Subtract 3 on both sides)
x + 3 -3 = 20 - 3
x = 17
So there is 1 solution
Hope this helps :)
Use the formula A Tr?and find the area of a circle with radius 5 cm. Use T=3.14.
The area of the given circle with radius of 5 cm is calculated as 78.5 cm²
How to find the area of a circle?We are given that the formula for area of a circle is;
A = πr²
where;
π = 3.14
r is radius and is equal to 5cm
Thus;
Area = 3.14 * 5²
Area = 78.5 cm²
Thus, the area of the given circle with radius of 5 cm is calculated as 78.5 cm²
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A
ABCD FECG
2
B
F
6
4
5
E
100°
120°
G
W
D
w = [?]°
5
60°
C
Answer:
120
Step-by-step explanation:
Corresponding angles of similar figures are congruent.
The measure for w is 120 degree.
We have ABCD ~ FECG
If two quadrilaterals are similar, it means that their corresponding angles are congruent, and their corresponding sides are proportional.
Then, we can write as
AB/ FE = CB/ EC = CD/ CD = AD/ FG
and, <A= <F,
<B = <E,
<C= <C,
<D= <G
So, the measure for w is same as angle G.
Thus, the measure for w is 120 degree.
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Four times a number is at least 10
Answer:
4x>= 10
Step-by-step explanation:
i believe thats the answer
Find the area of the trapezoid.
12 2 cm
10 2 cm
126 cm
[? ] cm
Enter the exact answer. Do not round.
What is the domain of the function
f(x)=1x-3
-3 when the range is {-6. 0, 9}?
Answer:
D : { -3, 3, 12}
Step-by-step explanation:
I would suggest substituting the range for the function and solving for x like so.
i.e -6 = 1x-3, -6 + 3 = 1x -3 + 3, -3 = x, x = -3.
0 = 1x - 3, 0 + 3 = 1x - 3 + 3, 3 = x, x = 3.
9 = 1x - 3, 9 + 3 = 1x -3 + 3, 12 = x, x = 12
The volume for a cylinder is given by the formula V = 72, where r is the radius of the cylinder and h is the height of the cylinder.
If the volume of a cylinder with a height of 3 centimeters is 363 7 cubic centimeters, then what is the radius of the cylinder?
A. 60.5 cm
B.
11 cm
C.
121 cm
D. 33 cm
Perform the indicated operation:
(4 + 2i) (1 + 5i)
-6 +22i
6-221
-14 + 18i
6+22i
Answer:
-235+84i
Step-by-step explanation:
I hope this is what you were looking for.