Doing moves to keep an equation balanced is a powerful part of solving equations, but thinking about what the structure of an equation tells us about the solutions is just as iimportant
How to determine?Sometimes it’s possible to look at the structure of an equation and tell if it has infinitely many solutions or no solutions. For example, look at
2(12x + 18) + 6 = 18x + 6(x + 7)
Using the distributive property on the left and right sides, we get
24x + 36 + 6 = 18x + 6x + 42
From here, collecting like terms gives us
24x + 42 = 24x + 42
Since the left and right sides of the equation are the same, we know that this equation is true for any value of x without doing any more moves!
Similarly, we can sometimes use structure to tell if an equation has no solutions. For example, look at
6(6x + 5) = 12(3x + 2) + 12
If we think about each move as we go, we can stop when we realize there is no solution
1/6 · 6(6x + 5) = 1/6 · (12(3x + 2) + 12) Multiply each side by 1/6
6x + 5 = 2(3x + 2) + 2 Distribute 1/6 on the right side.
6x + 5 = 6x + 4 + 2 Distribute 2 on the right side.
The last move makes it clear that the constant terms on each side, 5 and 4 + 2, are not the same. Since adding 5 to an amount is always less than adding 4 + 2 to that same amount, we know there are no solutions.
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What is the equation of the line that passes through the points (10, 10) and (-2,-5)? Write your answer in slope-intercept form.
it's too late for this nonsense-
Which of the following rational functions is graphed below?
On solving the question, we can say that second function has vertical asymptote at x=2
what is function?The subject of mathematics includes quantities and their variations, equations and related structures, shapes and their locations, and places where they can be found.
The function that represents the graph is f(x) = 1/x-2 .
The graph of the function
From the given graph , the vertical asymptote is at x=2
Lets find out the vertical asymptote of each function
To find out vertical asymptote we set the denominator =0
f(x) = 1/2x
2x = 0
x = 0
f(x) = 1/x-2
x-2 = 0
x = 2
The second function has vertical asymptote at x=2
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2. The figure shows a small rectangle cut out of a big rectangle. Find the area of the shaded figure.
7 cm
8 cm
3 cm
3 cm
Area of the shaded figure:
Area of the shaded figure:
square centimeters
The area of shaded figure rectangle is 7.5m²
How to find the area of rectangle?The amount of space occupied by a flat surface with a particular shape is referred to as the area. It is calculated using the "number of" square units (square centimeters, square inches, square feet, etc.) The amount of unit squares that can fit inside a rectangle is its area. The flat surfaces of laptop monitors, blackboards, canvas, etc. are a few examples of rectangular shapes.
step1:
The formula for the area of the Rectangle is:
A= a+ b/2*h= 3+3/2*7=31.5
step2:
The formula for the area of the rectangle is:
A=w l=3*8=24
Now you rest 31.5 -24 and it gives you 7.5
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Use the Distributive Property to rewrite each algebraic expression
15(2 + r)
The algebraic expression 15(2 + r) by the distributive property can be written as 30 + 15r.
What is distributive property?This property states that multiplying the sum of two or more addends by a number will produce the same outcome as multiplying each addend by the number separately and then adding the results together.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the algebraic expression is 15(2 + r). The expression by using the distributive property can be written as:-
E = 15(2 + r)
E = 30 + 15r
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The average temperature for a country during September 2013 was 58.1 degrees Farenheit. This is 5.6 degrees Farenheit above the 20th-century average temperature for September. What was the country's 20th-century average temperature for September
Answer:
52.5
Step-by-step explanation:
58.1 - 5.6= 52.5
Create a problem in which you add three different five digit numbers to get a sum of 93852
?+?+? =93,852
Answer:
50,000+30,000+13852=93,852
What is the input for the function f(x)=4x-9 if the output is 11
Answer:
Input = 5
Step-by-step explanation:
Output = Answer a.k.a. f(x)
Input = x
We start by replacing f(x) with the output, which is 11
11 = 4x-9. I like making it opposite. It's easier in my eyes.
Making it opposite it's 4x-9 = 11
Now we need to get x by itself. The opposite of -9 is +9. So if we add 9 to each side, it deletes the 9 from the left and puts it on the other side, making it;
4x = 11 + 9. 11 + 9 is 20, so....
4x = 20.
Now 4x is the same as 4 times x. The opposite of times is divide. So let's divide by 4 on both sides. That gets rid of the 4 on the left side and puts it on the other side, making it;
x = 20/4. 20/4 is 5, so...
x = 5
Step-by-step explanation:
f(x) = 4x - 9
4x - 9 = 11
4x = 11 + 9
4x = 20
x = 20 ÷ 4
x = 5
a single line divides a plane into two regions. two lines (by crossing) can divide a plane into four regions; three lines can divide it into seven regions. let pn be the maximum number of regions into which n lines divide a plane, where n is a positive integer recurrence formula
The P(n) represents the maximum no of regions into which n lines divide the plain then P(k) = P(k-1) + k. (b). The formula for P(n) is [tex]1+{ }^{n+1} c_2\end{aligned}$[/tex]. (c). The 5152 regions can divide the plane for 100 lines.
When no. lines are drawn, we get one plain region.
Let the number of regions when divided by lines be represented by
P(0), P(1), P(2), P(3), P(n)
Therefore P(0) = 1
P(1) = 2
P(1) = P(0) + 1
P(2) = P(1) + 2
P(3) = P(2) + 3
P(4) = P(3) + 4………………….
P(n) = P(n-1) + n
Therefore, if P(n) represents the maximum no. of regions into which n lines divide the plain
Then P(k) = P(k-1) + k
(b).
⇒ P(0) = 1
⇒P(n) = P(n-1) + n
= P(n-2) + (n-1)+n
= P(n-3) + (n-2) +(n-1)+n……..
= P(0) + 1 + 2+ 4=3 + 4 + 5 +……+n
= P(0) + (Sum of the first n natural numbers)
[tex]$$\begin{aligned}& =P(0)+\frac{n(n+1)}{2} \\& =1+{ }^{n+1} c_2\end{aligned}$$[/tex]
Therefore, the formula for P(n) is [tex]1+{ }^{n+1} c_2\end{aligned}$[/tex].
(c)
Compute the value for n=100
[tex]$$1+{ }^{n+1} c_2=1+{ }^{101} c_2=1+\frac{101 \times 102}{2}=5152$$[/tex]
Therefore, the 5152 regions can divide the plane for 100 lines.
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A single line divides the plane into two regions. Two lines (by crossing) can divide the plane into four regions; three lines can divide it into seven regions, etc. Let P(n) be the maximum number of regions into which n lines divide a plane, where n is a positive integer.
(a) Derive a recurrence relation for P(k) in terms of P(k-1) for all integers [tex]$k \geq 2$[/tex].
(b) Use iteration to find an explicit (closed) formula for P(n).
(c) Into how many regions can 100 lines divide the plane?
Given points A (1, 5) and B (-7, -5), which of the following coordinates is the midpoint of AB? (-3, 0) (-4, 0) (-2, 0) (4, 0) (2, 0)
The midpoint of the points A (1, 5) and B (-7, -5) is found to be (-3, 0)
What is midpoint of a line?The midpoint of a line segment is the centroid of the segment. It is equally distant from both of the ends and hence cuts the section in half.
How to find midpoint of a line segmentThe formula to determine the center point of a straight line using the coordinates of its endpoints is known as the midpoint formula in coordinate geometry.
The formula is of the form
X= (x₂ + x₁)/2
Y = (y₂ + y₁)/2
Given points A (1, 5) and B (-7, -5)
X= (1 - 7)/2 = -3
Y = (5 - 5)/2 = 0
the midpoint is (-3, 0)
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Someone help please!! I only need the questions that are circled.
Answer:
Question 8: (-4,7)
Question 10: (5,2)
Step-by-step explanation:
What are equations?:
Two mathematical expressions are equal.⇒ Example; 2x + 5 = 25 is an equation, in which 2x + 5 and 25 are two expressions separated by an equal (=) sign.What is Substitution Method?:
The value of one variable from one equation is substituted in the other equation.y = -2x - 1
3x - 4y = -40
Question 8:
3x - 4(-2x-1) = -40
3x + 8x + 4 = -40
11x + 4 = -40
11x = -44
x = -4
To find y we can substitute x into the equation.
y = -2(-4) -1
y = 8 -1
y = 7
(-4,7)
Question 8 Solution - (-4,7)
Question 10:
2x - y = 8
x = 5
Since this equation already given x we can substitution to find y.
2(5) - y = 8
10 - y = 8
-y = -2
y = 2
(5,2)
Question 10 Solution - (5,2)
Lenvy~
3y(2-7)-3(y-4)-63 for y=2
Answer:
-87
Step-by-step explanation:
y=2
3y(2-7)-3(y-4)-63
3(2)(2-7)-3(2-4)-63
6(2-7)-3(2-4)-63
6(-5)-3(-2)-63
-30+6-63=-87
How to Simplify 3(-9x + 8)
Answer:
multiple everything by three so say 3×-9x is -27x and 3 ×8 is 24 and you would then divide -27x by 24 and you would get -27x+24 I think
A man who is 6 feet tall casts a shadow that is 4 feet long. At the same time, a nearby flagpole casts a shadow that is 18 feet long. How tall is the flagpole?
picture of answer options are below
In ΔXYZ, y = 500 inches, mm∠Y=117° and mm∠Z=10°. Find the length of z, to the nearest inch.
if in ΔXYZ, y = 500 inches, mm∠Y=117° and mm∠Z=10° then length of z is 97.64 inches.
What is Trigonometry?Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.
Given that ΔXYZ, y = 500 inches, mm∠Y=117° and mm∠Z=10°.
We have to find the length of z.
By using sine rule we find the length of z.
sin117/500=sin10/z
0.891/500=0.174/z
Apply cross multiplication
0.891z=0.174×500
0.891z=87
z=87/0.891
z=97.64 inches
Hence, if in ΔXYZ, y = 500 inches, mm∠Y=117° and mm∠Z=10° then length of z is 97.64 inches.
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Answer:
97
Step-by-step explanation:
Consider the following data consisting of 9 values:
Data
4
10
12
9
0
6
3
11
16
The minimum is
The first quartile is
The median is
The third quartile is
The maximum is
The IQR is
Note that where the following values are given: 0, 3, 4, 6, 9, 10, 11, 12, 16, the respective quartile values are:
The minimum = 0
The first quartile (Q₁) is = 3.5
The median (Q₂) = 9
The third quartile (Q₃) = 11.5
The maximum = 16
The IQR = 8 .
What is median?The median is the value that separates the upper and lower halves of a data sample, population, or probability distribution in statistics and probability theory.
It is to be noted that sometimes referred to as "the middle" value in data collection.
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Decimal Fraction
5,6+23,3
I need answer
Haile Resort opened for business on June 1 with eight air conditioned units. Its trial
balance on August 31 is as follows.
Haile Resort
Trial Balance
August 31, 2022
Debit Credit
Cash Br. 39,200
Prepaid Insurance 9,000
Supplies 5,200
Land 40,000
Buildings 240,000
Equipment 32,000
Accounts Payable Br. 9,000
Unearned Rent Revenue 9,200
Mortgage Payable 100,000
Share Capital—Ordinary 200,000
Retained Earnings 0
Dividends 10,000
Rent Revenue 172,400
Salaries and Wages Expense 89,600
Utilities Expense 18,400
Maintenance and Repairs Expense 7,200
Br.490,600 Br.490,600
Other data:
1. The balance in prepaid insurance is a 1-year premium paid on June 1, 2022.
2. An inventory count on August 31 shows Br.1,300 of supplies on hand.
3. Annual depreciation rates are buildings (4%) and equipment (10%).
4. Unearned rent revenue of Br.7,600 should be recognized as revenue prior
to August 31.
5. Salaries and wages of Br.750 were unpaid at August 31.
6. Rentals of Br.1,600 were due from tenants at August 31.
7. The mortgage note is dated 1/1/2022. The mortgage interest rate is 8% per
year.
Instructions
a. Journalize the adjusting entries on August 31 for the 3-month period
June 1–August 31.
b. Prepare an adjusted trial balance on August 31.
Journalize the adjustment entries on August 31 for the $500 in golf income during the three-month period from June 1 to August 31.
what is interest ?By dividing the principal by the interest rate, the passage of time, and other factors, simple interest is determined. Simple return equals principal plus interest plus hours is the formula used in marketing. The easiest way to compute interest is by using this method. The most typical method for calculating interest is as a portion of the principal amount. For example, if he borrows $100 from a buddy and agrees to pay back the loan at 5% interest, he will only pay his share of the 100% interest. $100 (0.05) = $5. When you borrow money, you must pay interest, and you must charge interest when you lend it. Typically, interest is determined as an annual percentage of the loan total. The loan's interest is the name given to this percentage.
given
First FMA Assignment
Jornal 1.
2. Accounts Title Date (Mar) Debit ($) Credit ($)
1 Cash 60,000
60,000 Common Stock
3 Land 23,000
Structures 9,000
6k in equipment
Cash 38,000
5) Marketing Costs 1,600
Cash 1,600
Golf Sales 800
19) Cash (100 x 15) 1,500
1,500 in unearned revenue
25,000 dividends
Cash 1,000
30) salaries and 600 in expenses
Cash 600
30) Payable Accounts 26,000
Cash 26,000
31) Cash 500
500 Golf Revenue
Journalize the adjustment entries on August 31 for the $500 in golf income during the three-month period from June 1 to August 31.
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Solve for u
23= -8u-7+2u
Answer:
u = -5
Step-by-step explanation:
Isolate the variable, u. Note the equal sign, what you do to one side, you do to the other.
First, combine like terms. Like terms are terms that have the same amount of the same variables:
23 = -8u - 7 + 2u
23 = (-8u + 2u) - 7
23 = -6u - 7
Next, isolate the variable, u. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
PEMDAS is the order of operations, and stands for:
Parenthesis
Exponsnts (& Roots)
Multiplications
Divisions
Additions
Subtraction
~
First, add 7 to both sides of the equation:
23 = -6u - 7
23 (+7) = -6u - 7 (+7)
23 + 7 = -6u
30 = -6u
Next, divide -6 from both sides of the equation:
-6u = 30
(-6u)/-6 = (30)/-6
u = 30/-6
u = -5
u = -5 is your answer.
~
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Answer:
[tex]u=-5[/tex]Step-by-step explanation:
[tex]23= -8u-7+2u[/tex]
[tex]-8u-7+2u=23[/tex]
[tex]-8u+2u-7=23[/tex]
[tex]-6u-7=23[/tex]
[tex]-6x-7+7=23+7[/tex]
[tex]-6u=30[/tex]
[tex]\cfrac{-6u}{-6}=\cfrac{30}{-6}[/tex]
[tex]u=-5[/tex]
4. You download a digital soccer game for $2.50. You can add new players for
$1.50 each to upgrade your team. The total cost e is a function of the number n
of new players that you add. Which of the following statements about the
domain and the graph of the function is correct?
A The domain is discrete, and the point (4, 6) lies on the graph.
B
The domain is continuous, and the point (4. 6) lies on the graph.
The domain is discrete, and the point (5, 10) lies on the graph.
D The domain is continuous, and the point (5, 10) lies on the graph.
The domain is discrete, and point (5, 10) lies on the graph. Then the correct option is C.
What is a function?A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout mathematics and are essential for the development of significant links.
You download a digital soccer game for $2.50. You can add new players for $1.50 each to upgrade your team.
The number of players will be in a whole number. Then the function is given by the greatest integer function.
Let 'y' be the total cost and 'x' be the number of players. Then the equations are given as,
y = 1.50 [x] + 2.5
The total cost for 5 new players will be given as,
y = 1.50 [5] + 2.5
y = 7.5 + 2.5
y = 10
The domain is discrete, and point (5, 10) lies on the graph. Then the correct option is C.
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A party of 300 people,54% will have someone to kiss when the clock strikes midnight.How many people will have someone to
kiss?
In a party of 300 people, 54% of the people who would have someone to kiss is 162 people.
What is percentage?A percentage is a number or ratio that can be expressed as a fraction of 100 in mathematics. If we need to calculate the percentage of a number, divide it by the whole and multiply by 100. As a result, the percentage denotes a part per hundred.
To determine the percentage of people with partners to kiss at midnight;
300 people present in party
54% will have someone to kiss = 0.54
Number of people that will have someone to kiss = 300 x 0.54 = 162
The 54% of people with someone to kiss are 162 in number.
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hello i need help with my homeowkr math today please.
If the graph of a distribution of data shows that the graph is symmetric then the:
a) Midrange is a better measure of central tendency
b) Mean is a better measure of central tendency
c) Mode is a better measure of central tendency
d) Median is a better measure of central tendency
The correct option is:
d) Median is a better measure of central tendency
When a graph of a distribution of data is symmetric, it means that the left and right sides of the graph are mirror images of each other. This indicates that the data is evenly distributed around the center and that there are no extreme outliers. In such cases, the median is the best measure of central tendency, because it is the middle value of the dataset and it represents the center of the data distribution. The median is not affected by outliers.
The mean, mode, and midrange are also measures of central tendency, but they may not be as representative of the center of the data distribution when the data is symmetric. The mean is sensitive to outliers, the mode is the value that appears most frequently in the data, and the midrange is the average of the maximum and minimum values.
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f(x)=6-1/2x, h(x)=4(x-3)^2 Write f(h(x)) as an expression in terms of x
f(h(x)) = -2x^2 + 12x + (-12) in terms of x.
What is a function?
A function is defined as a relation between a set of inputs having one output each. In simple words, a function is a relationship between inputs where each input is related to exactly one output. Every function has a domain and codomain or range.
To find f(h(x)), we first need to substitute h(x) into f(x).
f(h(x)) = f(4(x-3)²)
Now we can substitute 4(x-3)^2 into f(x)
f(h(x)) = 6 - 1/2(4(x-3)^2)
= 6 - 2(x-3)^2
= 6 - 2(x^2 - 6x + 9)
= 6 - 2x^2 + 12x - 18
Hence, f(h(x)) = -2x^2 + 12x + (-12) in terms of x.
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The maths GCSE test scores of 280 students are shown in the histogram below
we determined median = 140 and lower quartile = 105.
What is median and quartile in a statistics data?Median is the middle value of a set of data. Median is determined by the formula, median = 2/4 (N+1)th term, where N is the number of data set.
Quartile is a statistics terms defines that a list of data is divided into four parts. There are three quartiles in the statistics data such as lower quartile, middle quartile and upper quartile.
lower quartile = 1/4(N+1)th term
upper quartile = 3/4(N+1)th term
the median is called the middle quartile.
What is the median and lower quartile for the above histogram?From the histogram we obtain the data below
80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200
number of data, N = 13
median = 2/4 (N+1)th term= 1/2 ×14 = 7th term
we find 7th term is 140.
median = 140
lower quartile= 1/4× (N+1)th = 1/4 × 14 = 3.5 th term
that means average of 3 and 4th term.
lower quartile = (100 + 110) /2 = 105
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Write an equation that represents the line.
Use exact numbers.
Answer:
-5x+5
Step-by-step explanation:
That would be the answer
Which expression is represented by the model?
The provided model represents the expression 4x-3.
What is expression?An expression or mathematical expression is a finite collection of symbols that is well-formed according to context-dependent norms. In mathematics, an expression is a phrase that has at least two numbers or variables and at least one arithmetic operation. Addition, subtraction, multiplication, or division are all examples of math operations. A number, a variable, or a combination of numbers, variables, and operation symbols constitutes an expression. An equation consists of two expressions joined by an equal sign.
Here,
You have 4 x's, then you minus 3,
=4x-3
The expression is represented by the model given is 4x-3.
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help im almost out of time
The domain and the range of this function shown in the graph include the following;
B. Domain: all real numbers.
Range = f(x) ≥ -11
How to identify the domain and range of this graph?In Mathematics, the horizontal extent of a graph represents all domain values and they are read and written from smaller to larger numerical values, and from the left of a graph to the right.
Furthermore, the vertical extent of a graph represents all range values and they are always read and written from smaller to larger numerical values, and from the bottom of the graph to the top.
By critically observing the graph of this function (see attachment), we can reasonably and logically deduce the following domain and range:
Domain = -∞ ≤ x ≤ ∞ or all real numbers.
Range = f(x) ≥ -11 or [-11, ∞].
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Please solve this ill mark brainlest please actually asnwer no answer = report
Answer:
Step-by-step explanation:
∠ADB=360-90=270°
circumference of circle=2πr=2π×3=6π m
length of arc ADB
[tex]=\frac{270}{360} \times 6\pi \\=\frac{3}{4} \times 6\pi \\=\frac{9}{2} \pi \\\approx 14.137~m\\[/tex]
area of circle =πr²=π×3²=9π m²
area of shaded region
[tex]=\frac{270}{360} \times 9\pi \\=\frac{27}{4} \pi ~m^{2} \\\approx 21.206~m^2[/tex]
about how many times large is 7.9x10^4 than 2.1x10^3
3.76 many times large is 7.9 x 10⁴ than 2.1 x 10³. This can be solved using scientific notation method.
What is scientific notation?A method of writing numbers that combines a power of 10 with a number between 1 and 10. Using scientific notation, one may express extremely big or extremely small values. Once a number between 1 and 10 has been multiplied by such a power of 10, it is then expressed in scientific notation. For instance, 6.9 × 10⁸ can be used to represent the number 690,000,000.
The main goal of scientific notation is to simplify computations using numbers that are abnormally big or tiny. When a number is written in scientific notation, all of the digits are important since zeros are no longer utilized to set the decimal point.
For: 7.9 x 10⁴
= (79/10) x 10⁴
= 79 x 10³
on the other hand for: 2.1 x 10³
Thus, 3.76 many times large is 7.9 x 10⁴ than 2.1 x 10³.
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What number gives a result of −4
when 8
is subtracted from the quotient of the number and 4
?
16 is the number gives a result of −4 when 8 is subtracted from the quotient of the number and 4.
What is Division?A division is a process of splitting a specific amount into equal parts.
If it gives a result of -4 then our equation will have ___ = -4
If we subtract 8 from the quotient of a number and 4 we have x/4 - 8
Our equation is:
x/4 - 8 = -4
Add 8 to both sides
x/4=-4+8
x/4=4
Multiply both sides by 4
x=16.
Hence, 16 is the number gives a result of −4 when 8 is subtracted from the quotient of the number and 4.
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