Answer:
= - 23.
Step-by-step explanation:
7x - 2y + 5 xy + x 2
From the question
x = -1
and
y = 2
7(-1) - 2(2) + 5 (-1)(2) + (-1) 2
= -7 - 4 + 5 (-2) - 2
= -7 - 4 -10 - 2
= - 11 - 12
= - 23.
If f(x)= 2x2 + x - 7 and g(x)= x + 5, then evaluate g(f(3)).
Answer:
g(f(3)) = 19
Step-by-step explanation:
This would be your functions: [tex]\displaystyle{f(x)=2x^2+x-7}[/tex] and [tex]\displaystyle{g(x)=x+5}[/tex]. In order to evaluate g(f(3)), we must find the value of f(3) first which we can find by substituting x = 3 in the f(x).
[tex]\displaystyle{f(3)=2(3)^2+3-7}\\\\\displaystyle{f(3)=2\cdot 9 - 4}\\\\\displaystyle{f(3)=18-4}\\\\\displaystyle{f(3)=14}[/tex]
Therefore, g(f(3)) is basically equal to g(14), we substitute x = 14 in the g(x).
[tex]\displaystyle{g(f(3))=g(14)=14+5 = 19}[/tex]
Hence, g(f(3)) is 19.
How do you express your answer as a polynomial in standard form?.
The standard form of polynomial is to write the polynomial so that the term with the highest power of the variable comes first, followed by the other terms in order of descending powers of the variable.
A polynomial in standard form requires that the polynomial be written in descending order of exponents. Polynomials are written in standard form for ease of computation. A polynomial is in its canonical form when it is expressed with the highest order term first, followed by the higher order terms, and so on. For example: 14x⁴ - 5x³ - 11x² - 11x + 8. You can see that in this standard form polynomial, the exponents are ordered in descending powers. These algebraic equations are called polynomials. Procedure for writing polynomials in standard form:
Write the terms Make the groups of all similar terms.The highest exponent write the as first term.Write the rest of the terms with small exponents in descending order.Write the constant term.The normal form polynomial of degree 'n' is : aₙxⁿ + aₙ₋₁ x⁽ⁿ⁻¹⁾ + ... + a₁ x + a₀
Let us assume a polynomial, p(x) = x² + 8x - 9 + 7x³ - 6x + x⁴ , using the above steps we can write the standard form of p(x).
x² + 8x - 9 + 7x³ - 6x + x⁴ x² - 9 + 7x³ - 6x + 8x+ x⁴ = x² - 9 + 7x³+ 2x + x⁴x⁴ + 7x³ + x² + 2x - 9 ( standard form)To learn more about Standard form polynomial, refer:
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Please help me do the following question:
The values of a, b and c are given as follows:
a = 5, b = 3, c = 3.
How to simplify the expression?The exponential expression for this problem is defined as follows:
[tex]\left(\frac{4}{3}\right)^{\frac{1}{2}} + \left(\frac{1}{3}\right)^{-\frac{1}{2}}[/tex]
The negative exponent means that the numerator and the denominator are inverted, with the positive exponent, then:
[tex]\left(\frac{4}{3}\right)^{\frac{1}{2}} + \left(3)^{\frac{1}{2}}[/tex]
The fractional exponent of 1/2 can be transformed into a square root, hence:
[tex]\frac{\sqrt{4}}{\sqrt{3}} + \frac{\sqrt{3}}{1}[/tex]
[tex]\frac{2}{\sqrt{3}} + \sqrt{3}[/tex]
[tex]\frac{2 + (\sqrt{3})^2}{\sqrt{3}}[/tex]
Then:
[tex]\frac{5}{\sqrt{3}}[/tex]
We rationalize the expression, thus:
[tex]\frac{5}{\sqrt{3}} \times \frac{\sqrt{3}}{\sqrt{3}} = \frac{5\sqrt{3}}{3}[/tex]
Meaning that the values are given as follows:
a = 5, b = 3, c = 3.
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3/4 • 200. Helpppppppp
Cross - division step
Answer:
150
Step-by-step explanation:
Given problem,
→ (3/4) × 200
Let's solve the problem,
→ (3/4) × 200
→ (3 × 200)/4
→ 600/4
→ 150
Hence, solution is 150.
sum of two numbers is 95.theother by 15 find the numbers?
Answer:
The two numbers are 40 and 55.
Step-by-step explanation:
Let one of the numbers be x.
Then the other number is 95 - x.
If we assume x to be larger among two of them,
⇒ x - (95 - x) = 15 (as one exceeds the other by 15)
⇒ 2x = 15 + 95
⇒ x = 110 / 2 = 55
The other number is (95 - x) which is 95 - 55 = 40
Thus, the two numbers are 40 and 55
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In June of 2016, for every 20 total emails a person received,
they could expect to get 11 spam emails. If a person received
300 spam emails in one month, how many total emails did
they receive?
The total emails received are 546. The solution is obtained using arithmetic operations.
What are arithmetic operations?
For all the real numbers, there are four basic mathematical operations which are:
1. Addition(‘+’) wherein the sum of the numbers is obtained.
2. Subtraction(‘-’) wherein the difference of the numbers is obtained.
3. Multiplication(‘×’) wherein the product of the numbers is obtained.
4. Division(‘÷’) wherein the quotient of the numbers is obtained.
Let the total emails received be 'x'.
We are given that for every 20 total emails a person received, they could expect to get 11 spam emails.
Now, a person received 300 spam emails in one month
So, the total emails received will be
⇒x = 20*300/11
⇒x = 545.45
⇒x = 546 (approx)
Hence, the total emails received are 546.
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which best shows an identity property?
Answer:
it is b the 2 one
hope you like it
Please help me with this!!!!! .If S is the set of points z in the complex plane such that (3 + 4i)z is a real number, then S is a ----- A. right triangle B. circle C. hyperbola D. line E. parabola
Answer:
D line
Step-by-step explanation:
The 4i word should be eliminated since we want (3+4i)z to be a genuine number. Then, to ensure that the imaginary terms cancel out when z is multiplied together, we can make z of the form (n-4/3 ni).
Who i El Cero and how did he change? What doe the narrator think contributed to thi change?
Answer:
He contributed because he was a life-changing character
Step-by-step explanation:
The passage states that u should read into the character
Kimiko and Miko are playing a game in which each person rolls a number cube. If the sum of the numbers is a prime number, then Miko wins. Otherwise, Kimiko wins. Is this game fair? Select the response with the correct answer and an argument that correctly defends the response. Multiple choice question. A) no; The probability that Miko will win is 712 . Because 712 is greater than 512 , Miko has a greater chance of winning. B) no; The probability that Kimiko will win is 712 . Because 712 is greater than 512 , Kimiko has a greater chance of winning. C) no; The probability that Kimiko will win is 812 or 23 . Because 23 is greater than 13 , Kimiko has a greater chance of winning. D) yes; The probability that Kimiko will win is 612 or 12 . Since Kimiko's probability of winning is 12 Miko's probability of winning must also be 12 .
No; the probability that Kimiko will win is 7/12. Because 7/12 is greater than 5/12, Kimiko has a greater chance of winning.
===========================================================
Explanation:
The prime number sums possible are: {2, 3, 5, 7, 11}
Below is the list of ways to reach those prime sums. Focus on the items in bold. The non-bolded numbers to the left are there to keep count of things.
1+1 = 21+2 = 31+4 = 51+6 = 72+1 = 32+3 = 52+5 = 73+2 = 53+4 = 74+1 = 54+3 = 75+2 = 75+6 = 116+1 = 76+5 = 11There are 15 items in that list out of 6*6 = 36 dice rolls total.
15/36 = 5/12 is the probability of Miko winning
1 - (5/12) = 7/12 is the probability of Kimiko winning.
Those two fractions (5/12 and 7/12) aren't the same, which means the game isn't fair.
Kimiko has a better chance of winning since 7/12 is larger than 5/12.
This is why choice B is the final answer.
What are the 7 laws of logarithms?.
7 laws of logarithms are,
1- Product rule
2- Division rule
3- Power rule/Exponential Rule
4- Change of base rule
5- Base switch rule
6- Derivative of log
7- Integral of log
logarithms
it is the exponent or power to which a base must be raised to yield a given number.
For example,
23 = 8,
therefore,
3 is the logarithm of 8 to base 2, or 3 = log2 8.
A logarithm is defined as the power to which a number must be raised to get some other values.
Logs are the other way of writing exponent. The formula for conversion between exponential and log forms is: bx = a ⇔ log b a = x. Logarithms are very useful in solving equations involving exponents.
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What is true about the completely simplified difference of the polynomials?.
The sum is a binomial with a degree of 6 is correct about the completely simplified difference of the polynomials.
The polynomial's difference is a binomial of degree six. An expression known as a polynomial only uses the operations of addition, subtraction, and multiplication of variables. Degree-based classifications for polynomials include linear, quadratic, cubic, and more. The polynomial's difference is a binomial of degree six.Polynomials are algebraic expressions made up of coefficients and variables. Occasionally, variables are referred to as indeterminates.In polynomial expressions, division by variable is not possible, but addition, subtraction, multiplication, and positive integer exponents are all possible. The single-variable polynomial x2+x-12 serves as an example. In this example, x2, x, and -12 are three different terms.To learn more about polynomials here
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What is true about the completely simplified sum of the polynomials 3x2y2 − 2xy5 and −3x2y2 + 3x4y?
A. The sum is a trinomial with a degree of 5.
B. The sum is a trinomial with a degree of 6.
C. The sum is a binomial with a degree of 5.
D. The sum is a binomial with a degree of 6.
What is the length of the square's side? (Show Work)
Answer:
[tex]\dfrac{6}{\sqrt{2}}[/tex]
Step-by-step explanation:
For a square of side a, the diagonal is a√2
This is because the diagonal and the two sides of the square form a right triangle
By the Pythagorean theorem, diagonal d = √(a² + a²) = √2a
Since we are given the diagonal as 6 we have
6 = √2 · a
[tex]\sf{Or\; a =\dfrac{6}{\sqrt{2}}[/tex]
The answer you have selected is right
Who find the number, zero?.
The number zero was invented by Aryabhatta, an astronomer and mathematician from India.
As we know the origin of zero in India came from a well-known astronomer and mathematician Aryabhatta.
A number zero had been used as a placeholder number since before Aryabhatta and Brahmagupta. In the 5th century, Aryabhatta is credited with using zero in the decimal system.
Whereas in the 7th century, Brahmagupta used zero in mathematical operations like addition and subtraction.
In India, a number zero was called ‘Sunya’, when the number reached Italy, it was named ‘Zefero’ and later it was called ‘Zero’ in English.
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An art class is making a mural for their school which has a triangle drawn in the middle. The length of the bottom of the triangle is x. Another side is 12 more than four times the length of the bottom of the triangle. The last side is 10 more than the bottom of the triangle. Write and simplify an expression for the perimeter of the triangle.
Ben answered the module in mathematics 4 hours less than thrice as fast as moira. If moira answered the module in 3 hours, how long would it take ben to answer the module?
Ben will take 5 hours to answer the module.
The problem is asking how long it will take Ben to answer the module. To discover the answer, translate the given mathematical phrase to a mathematical symbol.
According to the question,
Moira - 3 hours
Ben - Four hours less than thrice as fast as Moira
To translate the mathematical phrase into a mathematical symbol, we have to look for the signal words. The signal word "thrice" means that we have multiplied Moira's number of hours by 3 and "less than" means that you have to subtract 4 from it.
Ben = 3 *(3 hrs) - 4 hrs
= 9hrs - 4hrs
= 5hrs
So, Ben will take 5 hours to answer the module.
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Pleaseeee help
Consider the function f(x)=x^3-1. Which of the following functions is f^-1(x)?
The inverse function of f(x) = x^3 - 1 is f^-1(x) = (x + 1)^(1/3).
What is the inverse of a function?
An inverse function is a function that returns the original value for which a function has given the output. If f(x) is a function that gives output y, then the inverse function of y, i.e. f-1(y) will return the value x.
The inverse of a function f(x) is denoted as f^-1(x), and it is defined as the function that "undoes" f(x).
To find the inverse of a function, we need to swap the roles of x and y, and then solve for y in terms of x.
Given f(x) = x^3 - 1, the inverse function f^-1(x) is the function such that:
f(f^-1(x)) = x
f^-1(f(x)) = x
So we need to solve for x in terms of y.
x^3 - 1 = y
x = (y + 1)^(1/3)
Therefore, the inverse function of f(x) = x^3 - 1 is f^-1(x) = (x + 1)^(1/3).
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The sixth term of an arithmetic
Sequence is 17 and the tenth Term
IS 33, Determine the first term and
Common difference.
Answer: 1st term: -3. Common difference: +4
Step-by-step explanation:
-3, 1, 5, 9, 13, 17, 21, 25, 29, 33
add 4 each time
[tex] \frac{?}{?} [/tex]
5 to the power 0
To the power of 5, 0 is 1 . Any power with a value of 0 yields a response of 1. [tex]5^0[/tex] = 1 can be used to represent 5 to the power of 0.
Why any number to the power of 0 is 1?Because 1*x = x for any other number x, the number 1 is the multiplicative identity. Due to the fact that every integer raised to the power of zero is just the sum of zeroes, or the multiplicative identity, 1, any number raised to this power is one.
The value 0 to the power 0 cannot have any values since they would conflict. In this way, 0 to the power 0 is undefinable. Reverse values are indicated by negative exponents. A negative power of a number is one more than the positive opposite power of the same number. Negative zero is a mathematical nonsense. the sign bit of a binary integer is set to 1, and all other bits are set to zero.
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According to the hitogram of travel time to work from the US 2000 cenu (Page 6 of "Journey to Work: 2000"), approximately what i the median travel time, in minute (i. E. 50% of commuter have at mot that travel time, 50% have at leat that travel time)?
The percentage of commuters that travel more than 45 minutes is 90%.
What is percentage ?
A percentage is a way of expressing a number as a fraction of 100. It is often denoted by the symbol "%" and is used to express a proportion or rate as a part of a whole. Percentages can be used to compare different quantities or to express how much one quantity has changed relative to another.
The percentage of commuters that travel more than 45 minutes is the quotient of the commuters that travel more than 45 minutes and the total number of surveyed commuters.
So, we have ,
Percentage = [tex]\frac{450}{500}%Percentage[/tex] =500450
Divide 450 by 500
Percentage = 0.9 Percentage=0.9
Express as percentage
Percentage = 90 Percentage=90%
Hence, the percentage of commuters that travel more than 45 minutes is 90%.
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I need help filling in the missing blanks.
The degree measure of each angle in the triangle are:
m angle l = 18.4
m angle J = 57.6
m angle K = 93
What is the Degree Measure?
The degree measure, also known as an angle measure, is a way to quantify the size of an angle in mathematics. The degree measure of an angle is typically represented by the symbol "degrees" (°) or simply "deg" and it is a unit of measurement.
In a triangle, the degree measure of all angles add up to 180 degrees. Therefore, we can use this property to find the degree measure of each angle in the triangle.
m angle l = (x + 5) deg
m angle J = (4x + 7) deg
m angle K = (7x) deg
So we can use the following equation:
m angle l + m angle J + m angle K = 180
(x + 5) + (4x + 7) + (7x) = 180
12x + 19 = 180
12x = 161
x = 13.4
Hence, the degree measure of each angle in the triangle are:
m angle l = (x + 5) deg = (13.4 + 5) = 18.4
m angle J = (4x + 7) deg = (413.4 + 7) = 57.6
m angle K = (7x) deg = (713.4) = 93
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What method is used to find the prime factors of a number *?.
The method used to find the prime factors of a number is called prime factorization. One common method to find the prime factorization of a number is called trial division.
Here is how the trial division method works:
Divide the number by the smallest prime number (2). If the division is exact, then 2 is a prime factor of the number.
If 2 is a factor, divide the number by 2 again, and again, until the division is no longer exact. Then divide the resulting quotient by the next smallest prime number (3), and continue dividing by the smallest prime numbers (5, 7, 11, etc.) until the quotient is prime.
Repeat this process until the quotient is 1. The prime factors of the original number will be the prime numbers that were used in the divisions.
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introduction paragraph about Peter G. L. Dirichlet
Answer:
Johann Peter Gustav Lejeune Dirichlet (German: [ləˈʒœn diʀiˈkleː]; 13 February 1805 – 5 May 1859) was a German mathematician who made contributions to number theory (including creating the field of analytic number theory), and to the theory of Fourier series and other topics in mathematical analysis
PLEASE HELP ON THIS ASAP!
Answer:
Step-by-step explanation:
try D
Find the bearing of b from a in each diagram
Answer:
well where is your diagram
Aadan and Chinyelu viit the market in Gao to buy an Azawakh, a breed of dog that i popular for guarding ancient Mali village. When Aadan' dog wa a puppy, it weighed `8` kg, which i `30\%` of it current adult weight. What i the current weight of Aadan’ dog?
Write an equation in which `x` repreent the current weight of Aadan' dog
The current weight of Aadan's dog is approximately 26.67 kg.
What is weight ?
Weight is a measure of the force of gravity on an object. The weight of an object is equal to the force exerted on the object by gravity. The weight of an object is typically measured in units of force such as newtons (N) or pounds (lb). On Earth, the weight of an object is equal to its mass multiplied by the acceleration due to gravity, which is approximately 9.8 m/s².
Let's call the current weight of Aadan's dog as "W".
As per the information given,
Aadan's dog was a puppy and it weighed 8 kg which is 30% of it's current adult weight.
So, 8kg = 30/100*W
We can find the current weight of Aadan's dog by solving the equation above:
8 = 30/100W
8 = 3/10W
8 = 0.3W
W = 8/0.3
W = 8/(3/10)
W = 8(10/3)
W = 8*3.333
W = 26.666 kg ( approx 26.67 kg)
So the current weight of Aadan's dog is approximately 26.67 kg.
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8kg = 30/100*W
8 = 30/100W
8 = 3/10W
8 = 0.3W
W = 8/0.3
W = 8/(3/10)
W = 8(10/3)
W = 8*3.333
W = 26.666 kg ( approx 26.67 kg)
Jeremiah picked a toy from the treasure chest with 10 different toys. He selected a crazy straw, replaced it, and then selected the crazy strawn again. What is the probability that this could occur.
The probability that the described situation could occur as required in the task content is; 1 / 100.
What is the probability that the described situation could occur?It follows from the task content that the you selection is done such that there's replacement.
Since the treasure chest contains 10 different toys, the probability of selecting a crazy straw two times consecutively is;
= 1/10 × 1/10
= 1 / 100.
Ultimately, the probability that the given situation occurs as described is; 1 / 100.
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pls help...................................
The value of x found using the angle addition postulate is; x = 35°
What is the angle addition postulate?The angle addition postulate states that the measure of the angle formed by the non-common sides (rays) of two adjacent angles that have a common side is the sum of the two adjacent angles.
The measures of the angles in the document are;
The measure of angle STV is 75°
The measure of angle WTV is 40°
The measure of angle STW is x°
Please find attached a possible drawing representing the angles, obtained from the drawing in a similar question, and created with MS Word.
The angle addition postulate indicates that we get;
m∠STV = m∠STW + m∠WTV
Whereby angle ∠x is the same as the angle ∠STW, therefore, wse get;
m∠STV = x° + m∠WTV
Plugging in the values for the angles defined by the letters, we get the angles
75° = x° + 40°
x° = 75° - 40° = 35°
The measure of angle x is 35°
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To train for an upcoming race, Ranell runs the same route every morning from his house. He runs east for 3 miles and north for 4 miles. Then, he runs a straight-line home. What is the total distance Ranell will run after 5 days of training?
Answer: 35 miles.
Step-by-step explanation: 3+4 = 7
Ms. Wilson is buying packages of pencils. Each package cost $11.52 and contains 96 pencils. What is the unit price of a pencil?
Answer:
$0.12
Step-by-step explanation:
Unit price=$11.52/96(per pencil)
11.52/96=$0.12
Hope this helps
Answer:
$0.12
Step-by-step explanation:
First, you have to divide 11.52
to 96 which will be equal to 0.12.
We know how to divide because
in the question the keyword is
EACH. That's how you know when
to divide!
Hope This Helps :)
11.52÷96≈ 0.12
