You should disagree, and as a counterexample, consider
(-2)² = (-1 × 2)² = (-1)² × 2² = 1 × 4 = 4
which is clearly positive.
21x5-12+31 Order of Operations
Answer:625
Step-by-step explanation:(2+3)^4
5^4
Divide and simplify.
x^2+10x+16/x^2+6x+8÷1/x+2
State any restrictions on the variables.
(Screenshot)
Answer:
\( \frac{ {x}^{2} + 10x + 16 }{ {x } {}^{2} + 6x + 8} \div \frac{1}{x + 2} \)
\( \frac{ {x}^{2} + 8 x+ 2x + 16}{ {x}^{2} + 4x + 2x + 8} \times (x + 2)\)
\( \frac{x(x + 8) + 2 (x + 8)}{x(x + 4) + 2(x + 4)} \times (x + 2)\)
\( \frac{( x + 8)(x + 2)}{(x + 2)(x + 4)} \times ( x + 2)\)
\( \frac{( x + 8)(x + 2)}{(x + 4)} \)
2. Regina Aguirre deposits $2,000 into an ordinary annuity after each 6-month period for 4 years. The account
pays 6% interest compounded semiannually. Find the a) future value, and b) total interest earned.
which statement is true regarding the graphed functions?
Answer:
if -2 refers to the y-intercept "f(-2)=g(-2)" would be correct
The graph shows the change in the volume of water in a
tank over time when a release valve is open. What is the
average rate of change?
The graph compares the weights in pounds of 100 dogs and cats that are brought in
to a veterinarian's office. Using the medians, how much more does a typical dog weigh than a typical cat?
Answer:20
Step-by-step explanation:this is wrong
Answer:
40
Step-by-step explanation:
subtract median of dogs and median of cats
Which ordered pair is a solution to this equation?
2x + y = 10
A) 3,1
B) 2,1
C) 12,2
D) 4,1
ABCDEF form a regular hexagon with centre O.−−→OA=10a−−→OB=10bX is the midpoint of BC. Y is the point on AB extended such that AB : BY = 3 : 2. Express: (i) the vector −−→EX in terms of a and/or b. (ii) the vector −−→XY in terms of a and/or b.
Results:
(i) The vector −→EX in terms of a and/or b, →X = 1/2 (10b →OB + 10a →OA)
(ii) The vector −−→XY in terms of a and/or b→XY = →Y - 1/2 (10b →OB + 10a →OA)
How to express the vector?(i) We can use the midpoint formula, which states that the midpoint of a line segment is the average of the coordinates of its endpoints to express the vector −→EX in terms of a and/or b.
Since X is the midpoint of BC, we can express X as the average of the coordinates of B and C:
→X = 1/2 (→B + →C)
Since B is located at 10b units in the direction of vector →OB from O, and C is located at 10a units in the direction of vector →OA from O, we can express →B and →C in terms of a and b:
→B = 10b →OB
→C = 10a →OA
Substituting these values into the expression for →X, we get:
→X = 1/2 (10b →OB + 10a →OA)
(ii) To express the vector −→XY in terms of a and/or b, we can use the given ratio AB: BY = 3: 2.
Since AB is a vector from A to B, we can express it as →AB = →B - →A.
Substituting the expressions for →B and →A, we get:
→AB = 10b →OB - →OA
Since AB: BY = 3: 2, we can express BY as 2/3 of AB:
→BY = 2/3 (→AB)
Substituting the expression for →AB, we get:
→BY = 2/3 (10b →OB - →OA)
Finally, we can express →XY as the vector from Y to X, which is the opposite of →X to →Y:
→XY = →Y - →X
Substituting the expressions for →X and →Y, we get:
→XY = →Y - 1/2 (10b →OB + 10a →OA)
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Help me pleaseeeee this is due tonight (worth a lot of pts)
Answer: B / (6/3)(x^4-7)
Step-by-step explanation: When Dividing an equation with variables that have exponents, the numbers divide normally and the power of the exponents will subtract *as long as it is the same variable* in this case, it will be 4-7.
Hope this helped :)
Can You please help me
9514 1404 393
Answer:
S > 2
Step-by-step explanation:
In this context, "over" means "greater than." The problem statement tells you the weight (S) is greater than 2 kilograms:
S > 2
3 6 9 12 15 18 21 24 27 30 is odd or even numbers?
Answer: Half of them are even and half of them are odd.
Step-by-step explanation:
The even numbers are 6, 12, 18, 24, and 30. An even number is defined as a number that is divisible by 2, meaning it has no remainder when divided by 2. For example, 6 divided by 2 equals 3 with no remainder, so 6 is even.
The odd numbers are 3, 9, 15, 21, and 27. An odd number is defined as a number that is not divisible by 2, meaning it has a remainder of 1 when divided by 2. For example, 9 divided by 2 equals 4 with a remainder of 1, so 9 is odd.
Therefore, out of the given numbers, half of them are even and half of them are odd.
________________________________________________________
A typical tip in a restaurant is 15% of the total bill. If the bill is $100, what would the typical tip be
Answer:
15 dollars
Step-by-step explanation:
Total Bill = Cost of the Meal + tip
Total Bill = 100 + 15/100 * 100
Total Bill = 115
So the tip is 15 dollars.
2/5 of employees in a company drive to work, 1/3 travel by bus and the rest walk. 1. Find the fraction of who walk.
Answer:
4/15
Step-by-step explanation:
2/5 drive
1/3 bus
and rest walk
fraction of those who walk is 1-(2/5+1/3)
2/5+1/3=(6+5)/15=11/15
15/15-11/15=4/15
Energy is generated from solar and wind power. Solar power must be at most 6units/day or the panels will burn out. Wind must be strong enough to power 1 unit/ day or else the turbines won’t turn. The wind power must be less than twice the solar power less one, or the batteries wont charge properly. Find the optimal production of wind and solar that will maximize overall power output
Efficiency.Compared to solar panels' efficiency range of 18% to 22%, wind turbines typically capture 60% of the energy that flows through them.
What is more efficient wind or solar energy?Efficiency.Compared to solar panels' efficiency range of 18% to 22%, wind turbines typically capture 60% of the energy that flows through them.This proves that a single home wind turbine can generate more electricity than a number of solar panels.By the movement of air in relation to the Earth's surface, wind energy, a type of solar energy, is created.When the Earth's surface is heated unevenly by the Sun, this type of energy is created. The Earth's rotation and surface topography then alter this energy.Photovoltaic (PV) panels or solar radiation-concentrating mirrors are two ways that solar technologies turn sunlight into electrical energy.Electricity can be produced from this energy, which can also be used to store energy thermally or in batteries.To learn more about solar energy refer
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Finding Missing Angles in a Polygon
Answer:
\(\huge\boxed{\sf x = 130\°}\)
Step-by-step explanation:
Statement:In a quadrilateral (four sided polygon), the interior angles add up to 360 degrees.The angles with a small square on it represents 90 degrees.Solution:So,
90 + 90 + 50 + x = 360
230 + x = 360
Subtract 230 from both sidesx = 360 - 230
x = 130°\(\rule[225]{225}{2}\)
Find the perimeter of this shape
The perimeter of the given shape as represented in the task content is; 29 cm.
What is the perimeter of the given shape?It follows from the task content that the perimeter of the given shape on the centimeter grid as required is to be determined.
Since each grid line has 1cm as it's length;
The perimeter of the shape is the sum of all side lengths of the shape;
Perimeter, P = 6+2+3+2+2+1+3+2+2+2+2+1
P = 29 cm
Hence, the perimeter of the shape is; 29 cm.
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expand the following 8(x-3)
Answer:
8x-24
Step-by-step explanation:
First you do:
8×x which is 8x
Then you do:
8×-3 which is -24
Then you put it into 1 expression:
8x-24
Answer:
8−24
Thank You!
A state university is interested in where its students come from. They survey 300 of its students to find out if they are in-state, out-of-state, or foreign students. Match the vocabulary word with its corresponding example.
In-state corresponds to students who are residents of the same state as the university, out-of-state corresponds to students from different states, and foreign corresponds to students from countries other than the university's country.
To match the vocabulary word with its corresponding example in the context of the state university survey, we need to understand the terms and their meanings.
Here are the vocabulary words and their corresponding examples:
Vocabulary Word: In-state
Example: A student who is a resident of the same state where the university is located.
They pay lower tuition fees compared to out-of-state or foreign students.
Vocabulary Word: Out-of-state
Example: A student who is not a resident of the state where the university is located.
They typically pay higher tuition fees compared to in-state students.
Vocabulary Word: Foreign
Example: A student who is from a country other than the country where the university is located.
They are international students who may have different visa requirements and tuition fees.
To match these vocabulary words with their corresponding examples:
In-state: A student from the same state as the university, paying lower tuition fees.
Out-of-state: A student from a different state than the university, paying higher tuition fees.
Foreign: A student from a country other than the country where the university is located, with potential differences in visa requirements and tuition fees.
By associating each vocabulary word with its respective example, we can accurately describe the three categories of students based on their residency and origin in the context of the state university's survey.
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A small data analysis class has six computer science majors among the fourteen total students. Three people are chosen at random to form a group. Let X be the number of computer scientists in this group. (a) Find E(X). (b) Find Var(X).
the variance will be 0.6217.
What is frequency distribution?
The gathered data is arranged in tables based on frequency distribution. The information could consist of test results, local weather information, volleyball match results, student grades, etc. Data must be presented meaningfully for understanding after data gathering. A frequency distribution graph is a different approach to displaying data that has been represented graphically.
A small data analysis class has six computer science majors among the fourteen total students.
Three people are chosen at random to form a group.
here this is hypergeometric distribution with parameter n=sample size =3 ; N =population size =14
and k=computer sience major =6
a) E(X) =nk/N =3*6/14 =18/14 =9/7 =1.2857
b)|varaince =σ²=(nk/N)*(1-k/N)*(N-n)/(N-1)) =(3*6/14)(1-6/14)*(14-3)/(14-1)= 0.6217
Hence, the variance will be 0.6217.
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easy algebra! Just need help with this one
4 divided by 2/3 simplest form
Answer:
6
See photo for explaination.
Compute the following values when the log is defined by its principal value on the open set U equal to the plane with the positive real axis deleted.
a. log i
b. log(-1)
c. log(-1 + i)
d. i^i
e. (-i)^i
Answer:
Following are the answer to this question:
Step-by-step explanation:
The principle vale of Arg(3)
\(Arg(3)=-\pi+\tan^{-1} (\frac{|Y|}{|x|})\)
The principle value of the \(\logi= \log(0+i)\ \ \ \ \ _{where} \ \ \ x=0 \ \ y=1> 0\)
So, the principle value:
a)
\(\to \log(i)=\log |i|+i Arg(i)\\\\\)
\(=\log \sqrt{0+1}+i \tan^{-1}(\frac{1}{0})\\\=\log 1 +i \tan^{-1}(\infty)\\\=0+i\frac{\pi}{2}\\\=i\frac{\pi}{2}\)
b)
\(\to \log(-i)= \log(0-i ) \ \ \ x=0 \ \ \ y= -1<0\\\)
Principle value:
\(\to \log(-i)= \log|-i|+iArg(-i) \\\\\)
\(=\log \sqrt{0+1}+i(-\pi+\tan^{-1}(\infty))\\\\=\log1 + i(-\pi+\frac{\pi}{2})\\\\=-i\frac{\pi}{2}\)
c)
\(\to \log(-1+i) \ \ \ \ x=-1, _{and} y=1 \ \ \ x<0 and y>0\)
The principle value:
\(\to \log(-1+i)=\log |-1+i| + i Arg(-1+i)\)
\(=\log \sqrt{1+1}+i(\pi+\tan^{-1}(\frac{1}{1}))\\\\=\log \sqrt{2} + i(\pi-\tan^{-1}\frac{\pi}{4})\\\\=\log \sqrt{2} + i\tan^{-1}\frac{3\pi}{4}\\\\\)
d)
\(\to i^i=w\\\\w=e^{i\log i}\)
The principle value:
\(\to \log i=i\frac{\pi}{2}\\\\\to w=e^{i(i \frac{\pi}{2})}\\\\=e^{-\frac{\pi}{2}}\)
e)
\(\to (-i)^i\\\to w=(-i)^i\\\\w=e^{i \log (-i)}\)
In this we calculate the principle value from b:
so, the final value is \(e^{\frac{\pi}{2}}\)
f)
\(\to -1^i\\\\\to w=e^{i log(-1)}\\\\\ principle \ value: \\\\\to \log(-1)= \log |-1|+iArg(-i)\)
\(=\log \sqrt{1} + i(\pi-\tan^{-1}\frac{0}{-1})\\\\=\log \sqrt{1} + i(\pi-0)\\\\=\log \sqrt{1} + i\pi\\\\=0+i\pi\\=i\pi\)
and the principle value of w is = \(e^{\pi}\)
g)
\(\to -1^{-i}\\\\\to w=e^(-i \log (-1))\\\\\)
from the point f the principle value is:
\(\to \log(-1)= i\pi\\\to w= e^{-i(i\pi)}\\\\\to w=e^{\pi}\)
h)
\(\to \log(-1-i)\\\\\ Here x=-1 ,<0 \ \ y=-1<0\\\\ \ principle \ value \ is:\\\\ \to \log(-1-i)=\log\sqrt{1+1}+i(-\pi+\tan^{-1}(1))\)
\(=\log\sqrt{2}+i(-\pi+\frac{\pi}{4})\\\\=\log\sqrt{2}+i(-\frac{3\pi}{4})\\\\=\log\sqrt{2}-i\frac{3\pi}{4})\\\)
Which transformation on the coordinate plane is a dilation?
Answer:
it is the last one
Step-by-step explanation:
A dilation is an enlargement or reduction of an object by a scale factor and with a center of dilation.
Which of the following expression equal to 512
A) 2^6
B) 4^6
C) 8^3
D) 6^3
Answer:
C) 8³
Step-by-step explanation:
2⁶ = 64
4⁶ = 4096
8³ = 512
6³ = 216
Raghu purchased 234
pounds of rice. Belle purchased 54
as much as Raghu.
Complete the statement below to estimate how many pounds of rice Belle purchased.
CLEAR CHECK
Belle purchased about
pounds of rice.
I know this because
is
1
.
By fraction method, 55/16 pounds of rice Belle purchased.
In math, what is a fraction?
Part of a whole is a fraction. In mathematics, the number is represented as a quotient, where the numerator and denominator are divided. Both are integers in a simple fraction.
Whether it is in the numerator or denominator, a complex fraction contains a fraction. The numerator and denominator of a correct fraction are opposite each other.
= 2 3/4 * 5/4
= 5/4 * 2 + 5/4 * 3/4
= 5/2 + 5/4 * 3/4
= 5/2 + 15/ 4 * 4
= 5/2 + 15/16
common denominator and write the numerators above common denominator = 5 *8/16 + 15/16
= 40/16 + 15/16
= 40 + 15/16
= 55/16
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help please!!!!!!!!!!
Answer:
The interval from -12 to -7
The interval from 6 to 12.
Step-by-step explanation:
The equation is log(x + 9) + log(x 9) = log[(x + 9)(x 9)]. = log(x² − 81)
Here is the equation:
log(x² - 81) = 0.47712
This can be expressed in exponential form:
x² - 81 = 10^(0.47712)
x² = 81 + 3.02343
x² = 84.02343
x ≈ ± 9.1658
The answers are therefore x -9.1658 and x 9.1658.
These intervals are where these solutions occur:
The answer, x -9.1658, can be found in the range from -12 to -7.
- The answer x = 9.1658 is found in the range of 6 to 12.
The appropriate choices are:
- The range between -7 and -12; - The range between 6 and 12.
What is 3 2/6 in improper form?
A researcher wishes to estimate the proportion of all adults who own a cell phone. He takes a random sample of 2000 adults; 1650 of them own a cell phone. The population of interest to the researcher is:______
Answer:
All the adults
Step-by-step explanation:
The question says that the researcher wants to estimate all adults that own a cell phone.
So the population of interest is all the adults.
The statistic is the proportion p^ of the random sample of 2000 adults;
P^ = 1650/2000
= 0.825
The parameter of interest in the question is p, which is the proportion of those adults that own a cell phone.
1/2and8/16 is Equivalent or not Equivalent
Answer:
They are equivalent.
Step-by-step explanation:
John manages 27 apple orchards in North Georgia. He wants to split the orchards into thirds so that he can open 3 local stores.
Which expression shows the amount of orchards each store will represent?
O 27 x 1/3
O 27/(1/3)
O 27x3
O 27-(1/3)
Answer: 27 x 1/3
Step-by-step explanation: 27/1 x 1/3 = 9 orchards per store
The number of orchards in each store will be 27 x (1/3). Then the correct option is A.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
John manages 27 apple orchards in North Georgia. He wants to split the orchards into thirds so that he can open 3 local stores.
Then the number of orchards in each store will be
⇒ 27 / 3
Then the expression can be written as,
⇒ 27 x (1/3)
The number of orchards in each store will be 27 x (1/3). Then the correct option is A.
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