The missing value is 312 and the complete equation is 20 × 16 = 4x + 312, so that it has one solution of x = 2.
Given: Find the missing value which completes the equation 20 × 16 = 4x +? when x = 2.
What are algebraic equations?
Algebraic equations are a sequence or combination of characters containing alphabets, numbers, variables, symbols, operators, operands, etc. that equates to some value. It can simplify a bigger problem by deriving an equivalent expression for the same.
What are unknown variables?
Unknown variables are those variables whose value is yet not known. These variables are just declared for a better understanding of the problem but have no value yet. We need to find the value of unknown variables by solving one or more algebraic equations.
Let's solve the given problem.
Given that: 20 × 16 = 4x +?
We need to find the missing value that will satisfy the equation when x = 2.
Let us consider the missing value to be y.
So, the equation can be written as: 20 × 16 = 4x + y.
or 4x + y = 20 × 16
Given the find the value of y when x = 2.
So replacing the value of x with 2.
4 × 2 + y = 20 × 16
8 + y = 20 × 16
8 + y = 320
Adding (-8) on both sides
8 + y + (-8) = 320 + (-8)
8 + y - 8 = 320 - 8
y = 312
Therefore, the missing value is 312
Hence the missing value is 312 and the complete equation is 20 × 16 = 4x + 312, so that it has one solution of x = 2.
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the graph of y=f(x) is shown below. find all values of x for which f(x)>0
all values of x that satisfy the inequality f(x)>0 are x < 2 or x > 6.we can solve this by using parabola equation
what is parabola ?
A parabola is a type of conic section, which is a curve that is formed by the intersection of a plane and a cone. In particular, a parabola is the set of all points in a plane that are equidistant to a fixed point (called the focus) and a fixed line
In the given question,
Since the vertex of the parabola is (4,-8), the equation of the parabola can be written in vertex form as:
f(x) = a(x-4)² - 8
where 'a' is a constant that determines the shape and orientation of the parabola.
To find the value of 'a', we can use one of the given points on the x-axis, say (2,0). Substituting x=2 and y=0 in the equation of the parabola, we get:
0 = a(2-4)² - 8
8 = 4a
a = 2
So, the equation of the parabola is:
f(x) = 2(x-4)² - 8
To find all values of x for which f(x)>0, we need to solve the inequality:
2(x-4)² - 8 > 0
Adding 8 to both sides, we get:
2(x-4)² > 8
Dividing both sides by 2, we get:
(x-4)² > 4
Taking the square root of both sides, we get:
x-4 > 2 or x-4 < -2
Simplifying, we get:
x > 6 or x < 2
Therefore, all values of x that satisfy the inequality f(x)>0 are x < 2 or x > 6.
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i need the area of a rectangle, the middle is 5ft the right is 6ft and the bottom is 5ft. thank u
Answer:
length times width for area so its 5x6=30
Susan made $117 for hours 9 of work.
At the same rate, how much would she make for 7 hours of work?
2.4 divided by 0.24 pllss help
Answer:
your answer is 10 Goodluck
The nth term of a sequence is 3n + 5
Write down the 5th and 6th terms of the sequence.
Answer:
5th term=20 6th term=23
Step-by-step explanation:
okay so its going up in 3
starting from 8
8,11,14,17,20,23
If the smaller pyramid has a surface area of 25.49 ft2, what is the surface area of the larger pyramid? Round to the nearest hundredth.
Answer:
A = 159.31 ft^2
Step-by-step explanation:
When two solids are similar then the ratio in their surface region is the square of the scale factor of similarity.
please mark me brainliest!
Answer:
159.31
Step-by-step explanation:
help brainliest if right
Answer:
8
Step-by-step explanation:
Answer:
the answer is 8
PLEASE GIVE BRAINLIST
A = (b*h) / 2 or A = :½ b*h. or A = 0.5*b*h
Answer:
jklfhgugt
Step-by-step explanation:
Yo I need to bring up my math grade bad so
y>-x+4
(please show it graphed already :D
Answer: See attached
Step-by-step explanation:
y > -x + 4
[] The line will be dashed as this is only greater than, not greater than an equal to like ≥
[] We will shade above the line because the values are greater than
[] The line will have a slope of negative one
[] The line will have a y-intercept of 4
If you need more than the graph and the details above please let me know.
Select the postulate that is illustrated for the real numbers.
5 + (-5) = 0
• The addition inverse postulate
• The addition of zero postulate
•
The commutative postulate for multiplication
•
The multiplication inverse
• The distributive postulate
Multiplication by one
O Commutative postulate for addition
What does the pair of equations y = 1, z = 8 represent? in other words, describe the set of points (x, y, z) such that y = 1 and z = 8. a plane
The set of points (x , 1 , 8) describe a line that has constant value of y and z coordinates, i.e., is parallel to x-axis in the plane.
What is the equation of a line in a plane?The equation of a plane in R has the generic form: ax + by + cz + d = 0, where a, b, and c are the elements of the normal vector n = (a, b, c) that is perpendicular to the plane or any vector parallel to the plane.
Given: Equations of the lines:
y = 1z = 8To find: description of the points (x, y, z) in the plane.
Finding:
According to the given conditions, the lines y = 1 and z = 8 describe two lines with constant values of y and z coordinates respectively in the plane.
The set of points (x , 1 , 8) describe a line that has constant value of y and z coordinates, i.e., is parallel to x-axis and can have infinitely many values of x in the plane.
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C. c. what is the slope of (2,5) and (-1,2)
Answer:
The slope of ( -2 , -5) and ( -1 , -2) is perpendicular to this line
Greetings from Brasil...
The slope is given by the expression:
ΔY/ΔX
where
ΔY = Y₂ - Y₁
ΔX = X₂ - X₁
slope = ΔY/ΔX
slope = (Y₂ - Y₁)/(X₂ - X₁)
slope = (2 - 5)/(- 1 - 2)
slope = (- 3)/(- 3)
slope = 1This is all the information provided in the question. I
cannot help if it is unclear. This is everything.
The following table lists the $ prizes of four different
lotteries, each based on a six-sided die roll:
(a) Rank each lottery pair by statewise dominance. Use the symbols >SW and ∼SW to indicate dominance and indifference, respectively. Note that there are six such rankings.
(b) Rank each lottery pair by first-order stochastic dominance. Use the symbols >F OSD and ∼F OSD to indicate dominance and indifference, respectively. Show your work.
(c) Rank each lottery pair by second-order stochastic dominance. Use the symbols >SOSD and ∼SOSD to indicate dominance and indifference, respectively. Show your work.
(a) To rank each lottery pair by statewise dominance, we compare the prizes of each lottery for each possible outcome of the die roll. Here are the six rankings:
Lottery 1 >SW Lottery 2
Lottery 1 >SW Lottery 3
Lottery 1 >SW Lottery 4
Lottery 2 ∼SW Lottery 3
Lottery 2 ∼SW Lottery 4
Lottery 3 ∼SW Lottery 4
(b) To rank each lottery pair by first-order stochastic dominance, we compare the cumulative distribution functions (CDFs) of each lottery. The CDF of a lottery gives the probability that the prize is less than or equal to a certain value. Here are the rankings:
Lottery 1 >F OSD Lottery 2 >F OSD Lottery 3 >F OSD Lottery 4
To show why Lottery 1 is first-order stochastically dominant over Lottery 2, consider the following CDFs:
Lottery 1:
Prize ≤ $1: 1/6
Prize ≤ $2: 2/6
Prize ≤ $3: 3/6
Prize ≤ $4: 4/6
Prize ≤ $5: 5/6
Prize ≤ $6: 6/6
Lottery 2:
Prize ≤ $1: 0/6
Prize ≤ $2: 1/6
Prize ≤ $3: 2/6
Prize ≤ $4: 3/6
Prize ≤ $5: 4/6
Prize ≤ $6: 6/6
We can see that for any prize value, the CDF of Lottery 1 is always greater than or equal to the CDF of Lottery 2. This means that the probability of winning a certain prize or less is always greater for Lottery 1 than for Lottery 2, which is the definition of first-order stochastic dominance.
We can similarly compare the CDFs of the other lotteries to arrive at the ranking above.
(c) To rank each lottery pair by second-order stochastic dominance, we compare the CDFs of the lotteries' expected values. The expected value of a lottery is the sum of the prizes multiplied by their probabilities, and the CDF of the expected value gives the probability that the expected value is less than or equal to a certain value. Here are the rankings:
Lottery 1 >SOSD Lottery 2 >SOSD Lottery 4 >SOSD Lottery 3
To show why Lottery 1 is second-order stochastically dominant over Lottery 2, consider the following CDFs of the expected values:
Lottery 1:
Expected value ≤ $1: 1/6
Expected value ≤ $2: 3/6
Expected value ≤ $3: 4/6
Expected value ≤ $4: 5/6
Expected value ≤ $5: 6/6
Expected value ≤ $6: 6/6
Lottery 2:
Expected value ≤ $1: 0/6
Expected value ≤ $2: 1/6
Expected value ≤ $3: 2/6
Expected value ≤ $4: 3/6
Expected value ≤ $5: 4/6
Expected value ≤ $6: 5/6
We can see that for any expected value, the CDF of Lottery 1 is always greater than or equal to the CDF of Lottery 2. This means that the probability of getting an expected value or less is always greater for Lottery 1 than for Lottery 2, which is the definition of second-order stochastic dominance.
We can similarly compare the CDFs of the other lotteries to arrive at the ranking above.
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what’s the answer sjskzjsjs
Answer:
(x,y)-->(-x,y)
Step-by-step explanation:
A pyramid of logs has 2 logs in the top row, 4 logs in the second row from the top, 6 logs in the third row from the top, and so on, until there are 200 logs in the bottom row. Is the pattern an arithmetic sequence? Identify a and d. Write the 50th term of the sequence. Find the total number of logs in the first 10 rows.
Answer:
1) Is the pattern an arithmetic sequence?
Yes it is
2)Identify a and d.
a = First term = 2
d = Common difference = 2
3) Write the 50th term of the sequence.
50th term = 100
4) Find the total number of logs in the first 10 rows.
= 1010 logs
Step-by-step explanation:
Is the pattern an arithmetic sequence?
Yes it is
2) Identify a and d.
A pyramid of logs has 2 logs in the top row, 4 logs in the second row from the top, 6 logs in the third row from the top, and so on,
The formula for arithmetic sequence =
an = a+ (n - 1)d
a = First term
d = Common difference
For the above question:
a = 2
d = Second term - First term
= 4 - 2
d = 2
3) Write the 50th term of the sequence.
Using the formula for arithmetic sequence
an = a+ (n - 1)d
a = 2
n = 50
d = 2
a50 = 2 + (50 - 1)2
= 2 + (49)2
= 2 + 98
= 100
The 50th term = 100
4)Find the total number of logs in the first 10 rows.
Sum of first n terms = n/2(a + l)
n = 10
a = first term = 2
We are told that there are 200 logs in the bottom row, hence:
l = last term = 200 logs
Hence,
Sn = 10/2×[ (2 + 200
= 5(202)
= 1010 logs
[(63 ÷ 18)2 − 8] * 5 pls help meee
Answer:
-5
Step-by-step explanation:
use PEMDAS. In this problem, solve 63 divided by 18 first, the prcoeed from there.
[(63/18)2-8]*5
[(3.5)2-8]*5
3.5*2 is 7
[7-8]*5
[-1]*5 = -5
We paid $8 for 2 hamburgers, which is a rate of $_
per hamburger
a student running for a position in student government believes that 54% of the student body will vote for her. however, she is worried about low voter turnout. assuming she truly has 54% support in the entire student body and only students show up for voting, how likely is it that she will not get the majority of the vote? that is, find the probability the sample proportion is 50% or lower from the 100 votes cast. (round to four decimal places as needed.)
Answer:
Step-by-step explanation:
What are the main categories of electors in India?
Ans.- There are 3 categories of electors in India: –
(i) General electors,
(ii) Oversees (NRI) electors - ( Kindly refer to ‘Frequently Asked Questions – Overseas Electors’),
(iii) Service Electors - (Kindly refer to ‘Frequently Asked Questions – Service Electors’).
Q2. Who is eligible to be registered as a general elector?
Ans. Every Indian citizen who has attained the age of 18 years on the qualifying date i.e. first day of January of the year of revision of...
faqs
resident electors
If f(x)=2x-3x^2 what is f(2)
f(2) is -8
According to the question,
Given that,
f(x)=2x-3x^2
Substitute x = 2 into f(x) = 2x-3x^2
f(2)=2x-3x^2
f(2)=2x2 - 3x \(2^{2}\)
f(2)= 4 - 3 x 4
f(2)= 4 - 12
f(2)= - 8
In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an ‘equal’ sign. The most basic and simple algebraic equations consist of one or more variables in math.
Example of an Equation:
4y + 2 = 18
4×2 + 3x − 28 = 0
9m = 49.5
Equation Types
Algebra considers two prominent families of equations, namely polynomial equations and linear equations. Polynomial equations with one variable can be written in P(x) = 0, where P is a polynomial, and ax + b = 0 is the general form of linear equations. Here, a and b are parameters. We can practice geometric or algorithmic methods from linear algebra or mathematical analysis to solve these equations. Also, there are different types of equations, such as:
Linear equations
Quadratic equations
Cubic equations
Quartic equations
Differential equations
Parametric equations
Equation of a line
The standard form of the equation of a line is A x + By + C = 0. The slope-intercept form of an equation is y = mx + b, where m is the slope of the line and b is the y-intercept. However, there are various types of equations to represent lines.
Equation of x-axis
Generally, we say that the equation of the x-axis equation is of the form y = 0. However, we can also write the x-axis equation as x = c where c is constant.
The x-axis comprises all the real values of x, although the value of y is equal to 0 on the complete x-axis.
Thus, x can be recognised as constant and y as 0.
In the coordinate system representation, we can represent any point on the x-axis as (c, 0), where c is any real number.
Therefore, the x-axis formula will be x= c + y
Here,
c = constant
y = 0
The x-axis formula is x = c, where c is constant.
Equation in One Variable
The equation in one variable means the equation containing only one variable. Let’s have a look at the below equations.
17 – 9 = 8
x + 4 = 4y + 22z
4x2 + 3x – 7 = 0
The three examples above represent equations that propose equality (could be true or not) between two expressions.
The first equation does not contain any variable.
The second equation has three different variables, such as x, y and z. Thus, it is a multivariate equation.
The third equation contains only one variable, i.e. x.
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The given point (-3, -9) is reflected over X-axis
Answer:
The correct answer is (3, 9)
Step-by-step explanation:
The rule for reflecting over the X-axis is to negate the value of the y-coordinate of each point, but leave the x-value the same. For example, when point P with coordinates (5,4) is reflecting across the X-axis and mapped onto point P', the coordinates of P' are (5,-4).
Recall the formula for the height of an object with a given initial vertical velocity and Initial height:
Answer: it’s D
Step-by-step explanation:
A coin sold at auction in 2019 for \( \$ 4,120,500 \). The coin had a face value of \( \$ 20 \) when it was issued in 1786 and had been previously sold for \( \$ 395,000 \) in \( 1968 . \) a. At what
The annual appreciation of the coin from 1968 to 2019 was 6.7%. Hence the coin appreciated at a rate of 6.7% per year from 1968 to 2019.
In 2019, a coin was sold at auction for $4,120,500. The coin had a face value of $20 when it was first issued in 1786. The coin had been previously sold for $395,000 in 1968. At what price did the coin appreciate annually from 1968 to 2019? Solution:We can start this problem by using the compound interest formula which is given as follows;A = P (1+r/n)^(nt)Where:A is the future value of the investment;P is the principal investment;r is the annual interest rate;n is the number of times that interest is compounded per year;t is the number of years the money is invested.To solve the problem we will consider the following;We will use the initial price of the coin which was sold in 1968 which is $395,000 as the principal investment, PWe will use the price of the coin sold at auction in 2019 which is $4,120,500 as the future value of the investment, AWe will use the number of years between 1968 and 2019 which is 51 years as t.The interest rate is not given, but we can solve for it by substituting the known values into the formula as shown below;A = P (1+r/n)^(nt)=> 4,120,500 = 395,000 (1+r/1)^(1 x 51)=> (1+r) = (4,120,500/395,000)^(1/51)=> (1+r) = 1.067=> r = 1.067 - 1=> r = 0.067 = 6.7%Therefore the annual appreciation of the coin from 1968 to 2019 was 6.7%. Hence the coin appreciated at a rate of 6.7% per year from 1968 to 2019.
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Katy’s favorite rides at the amusement park are the roller coaster and water slide. The wait time for the roller coaster is 25 minutes and the wait time for the water slide is 10 minutes. If she went on 12 rides total and waited three hours in line, how many times did she go on each ride?
Katty rode the roller coaster four times after riding the slide eight times.
What number times did she go on each ride?Let R be the number of times she rode the roller coaster
Let S be the number of slides
The following mathematical equation can be created using the information provided:
R + S = 12. ........(i)
25R + 10S = 180 .......(ii)
From equation i, R = 12 - S.
Therefore, 25(12 - s) + 10s = 180
300 - 25s + 10s = 180
300 - 15s = 180
15s = 300 - 180
15s = 120
S = 120/15
S = 8 ,
Therefore R = 12 - S = 12 - 8 = 4
Katty rode the roller coaster four times after riding the slide eight times.
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dave plays basketball 3 out of the 5 weekdays. how many possible schedules are there to play basketball on wednesday or monday or both?
There are 9 possible schedules to play basketball such that dave can play on monday or wednesday or both which is union of two set .
so this question seems like we have to take union of ways of palying on monday or wednesday
let n(m) be number of ways of playing on monday
n(w) be number of ways of playing on wednesday
we have to find n(m∪w)
n(mUw) = n(m) +n (w) - n(m∩ w)
so n(m) = \(4_C__2\) as one day is now fixed which is monday so we have 4 available days and 2 days to play.
n(m) = \(4_C__2\) = 6
similary n(m) = n(w) = 6
now n(m∩w) = \(3_C__1\) as now we have 2 fixed day and we have 3 day remaining and only one day to play.
n(m∩w) = \(3_C__1\) =3
now n(mUw) = n(m) +n (w) - n(m∩ w)
=> 6 + 6 -3
=> 12 - 3
so n(mUw) = 9
so we have 9 schedules to paly keeping condition given in the question.
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Abigail is setting aside money to purchase a new phone. She already has $150 saved up from working over the summer vacation. If she earns $25 per shift working at the convenience store, how many shifts will she need to work to reach her goal of $600?
And explain plzz
Answer:
18 shifts.
Step-by-step explanation:
If x is the number of shifts using:
25x + 150 = 600
25x = 600 - 150
25x = 450
x = 450/25
x = 18.
A sawmill cuts boards that are 16 ft long.After they are cut, the boards are inspected and rejected if the length has a percent error of 1.5% or more.
1) List some board lengths that should be accepted.
2) List some board lengths that should be rejected.
The sawmill also cuts boards that are 10,12 and 14 feet long.An inspecter rejects a board that was 2.3 in too long. What was the intended length of the board?
Some acceptable board lengths are: 15.8 ft, 16.20 ft and 16.10 feet
Some board lengths to reject are: 14.8 ft, 17.20 ft and 12.10 feetThe intended lengths are 10.19, 12.19 and 14.19 feetBoard lengths that should be acceptedFrom the question, we have the following parameters that can be used in our computation:
Length = 16 ft
Percent error = 1.5%
This means that the acceptable lengths are
Acceptable = Length ± Percent error * Length
Substitute the known values in the above equation, so, we have the following representation
Acceptable = 16 ± 1.5% * 16
So, we have
Acceptable = 16 ± 0.24
Evaluate
Acceptable = 15.76 to 16.24
Some board lengths that should be accepted are 15.8 ft, 16.20 ft and 16.10 feet
Board lengths that should be rejectedIn (a), we have
Acceptable = 15.76 to 16.24
Some board lengths that should be rejected are 14.8 ft, 17.20 ft and 12.10 feet
The intended lengths of the boardsHere, we have
Lengths = 10, 12 and 14 feet
Length too long = 2.3 inches
Convert to inches
Length too long = 0.19
So, we have
Intended lengths = (10, 12 and 14 feet) + 0.19
Evaluate
Intended lengths = 10.19, 12.19 and 14.19 feet
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Which r-value suggests a weak positive correlation? A. r = 0.17454 B. r = −0.17454 C. r = 0.98264 D. r = −0.98264
Answer:
A.) r = 0.17454
Step-by-step explanation:
Got it right on my text
Answer:
A.) r = 0.17454
Help me please ( only correct answers) ty
Answer:
135 cubic cm
Step-by-step explanation:
Split the shape into two so one is 7x3x5 and the other is 3x2x5. Multiply those then add together
Find the area of the triangle below.
4 in.
3 in.
Answer:
5
Step-by-step explanation:
4^2+3^2=5^2
Venice has a gift box shaped like a right rectangular prism. The height of the box is 4 inches, and the area of the base is 15 square inches. what is the volume of the rectangular prism?
The volume of the rectangular prism would be 60 cubic inches.
What are Arithmetic operations?Arithmetic operations can also be specified by adding, subtracting, dividing, and multiplying built-in functions.
What is the volume of a rectangular prism?The volume of the rectangular prism is the product of the base area and the height.
Given the area of the base is 15 square inches and the height of the box is 12 inches.
The volume of the rectangular prism would be :
⇒ Base Area × Height
⇒ 15 in² × 4 in
Apply the multiplication operation, and we get
⇒ 60 in³
Hence, the volume of the rectangular prism would be 60 cubic inches.
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