The main difference between a true solution and a colloidal solution is the particle size of the dispersed substance. In a true solution, the particles are so small that they cannot be seen with the human eye, while in a colloidal solution, the particles are intermediate in size and are visible under microscope.
A true solution is a homogeneous mixture of two or more substances where one substance is completely dissolved in the other. The particles of the dissolved substance, called solute, are so small that they cannot be seen with the human eye and are evenly distributed throughout the solution. A true solution is transparent, and the particles of the dissolved substance do not scatter light, thus not visible under a microscope. Examples of true solutions are sugar dissolved in water, and salt dissolved in water.
On the other hand, a colloidal solution is a type of mixture where one substance is dispersed throughout another substance in small particles that are not large enough to settle out but are large enough to scatter light. The particles of the dispersed substance, called the dispersed phase, are intermediate in size between those of a true solution and a suspension. The particles are visible under microscope, but not to the human eye, and the mixture is usually cloudy or opaque. Examples of colloidal solutions are milk, fog, and blood.
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In ΔEFG, g = 8.4 inches,
�
m∠G=79° and
�
m∠E=25°. Find the length of f, to the nearest 10th of an inch.
The image explains it all. First we find the third degree using the sum of angles in a triangle (180), then, using the rule of sines, we find the f and round it to the nearest 10th inch
Please help somebody it’s due in one hour
The first, fourth and eight terms of the given sequence are the ones in the last option.
-2, -250, -156,250
How to find the terms in the given sequence?We know that the n-th term of the given sequence is given by the formula:
A(n) = -2*5ˣ⁻¹
The first term is what we get when x = 1, then the first term is:
A(1) = -2*5⁰ = -2
The fourth term is what we get when we use x = 4, we will get:
A(4) = -2*5⁴⁻¹ = -2*5³ = -250
The eight term is what we get when x = 8
A(8) = -2*5⁸⁻¹ = -2*5⁷ = -156,250
Then the correct option is the last one.
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How do you plot a graph given an equation?.
To plot a graph an equation starts by determining the equation's variables. Select the variables' possible ranges of values.
Plot the equation using a graphing calculator or graphing software.
Enter the equation into the graphing calculator if you're using one. Enter the equation in the graphing software if you're using one. Modify the scale and labels of the graph to your specifications.
Draw the points on the graph by inputting the variables' values. Join the points together to create a graph.
All you have to do is change the variables in this formula to graph a linear equation. A linear equation is the simplest form of graph to create because no computations are required before drawing the graph. Draw a simple Cartesian coordinate plane.
Start at the y-intercept to plot the slope. The fraction's numerator is the rise (the number of spaces up), and its denominator is the run (the number of spaces to the side).
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1+1=x
if i were trying to find x what would x be
Answer:
X = 2
Because x means our answer and the answer to 1 + 1 is 2!
Answer:
2
Step-by-step explanation:
1+1=2
x=2
You just switched to a cell phone plan where you have to pay by the minute because you can’t afford Verizon anymore. You have to pay an activation fee of $13.00 and then you pay $0.30 per minute. This month, your bill was $40. For how many minutes did you talk?
Answer:90 minutes
Step-by-step explanation:
40 dollars a month minus the 13.00 fee. 40-13=27. 27-.30=90 so 90 minutes
Enrique y Silvia van a dar una fiesta a su nieta
Sofía y desean saber cuántos niños como máxi-
mo deben invitar; el dinero que tienen está re-
presentado por D= $ 7 500x y los gastos están
representados por G = $ 5 900x + 25.
La cantidad máxima de niños que pueden invitar Enrique y Silvia a la fiesta de su nieta, Sofía, es x = 10.
Enrique y Silvia van a dar una fiesta a su nieta Sofía y desean saber cuántos niños como máxi-mo deben invitar; el dinero que tienen está re-
presentado por D= $ 7 500x y los gastos están representados por G = $ 5 900x + 25.
Establecer la ecuación.
D = 7500x - G
7 500x - 5 900x - 25 = 0
Resolver la ecuación.
1 500x = 25
x = 10
Interpretar la solución.
La cantidad máxima de niños que pueden invitar Enrique y Silvia a la fiesta de su nieta, Sofía, es x = 10.
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A store has a
25
%
25%25, percent off sale on coats. With this discount, the price of one coat is
$
34.50
$34.50dollar sign, 34, point, 50.
The price of one coat is $46.
What is Percentage?Percentage is defined as the parts of a number per fraction of 100. We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number. So the percentage actually means a part per 100.
Given that,
a store has 25% off sale on coats.
Discounted price of one coat = $34.50
We have to find the original price of the coat. Let it be x.
x - (25% x) = 34.5
x - 0.25x = 34.5
0.75x = 34.5
x = 46
Hence the original price of the coat is $46.
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The model is 3.1 feet tall. The actual building is 41.65 feet tall. This means that each foot in Matt’s scale model represents how many actual feet for the building?
Answer:
13.43
Step-by-step explanation:
PLEASE HELP ME, I WILL BE REALLY GRATEFUL EMERGENCY 50 POINTS!!
I am the superintendent of Minie Couty schools. My staff is made up of an assistance superintendent, a director, and an accountant. Our names are Mr. Wilson, Mr. Jones, Ms. Bigge, and Mr. Smith. Mrs. Jones and the assistant superintendent used to share the same office. I play bridge with my accountant every Monday night. Mr. Wilson confers with me every week. Mr. Smith, who holds a degree in mathematics, may get my job when I retire. Mrs. Jones is so busy she doesn't have time to play card games. Mr. Wilson has never shared an office in his life. Who am I and what are the names of the members of my staff?
Answer:
I'm rlly bad at these so I'll try and good luck lol
they are the superintendent
assistance superintendent: Mr Wilson
director: Mr Jones
accountant: Ms bigge
assistants: Mr Smith and Mrs jones
Step-by-step explanation:
good luck yay -14 year old
At a real etate agency, an agent old a houe for $342,000. The commiion rate i 4. 5% for the real etate agency and the commiion rate for the agent i 30% of the amount the real etate agency get. How much did the agency make on the houe? How much did the agent earn in commiion?
So, the agency made $15,390 on the sale of the house and the agent earned $4,617 in commission.
First, to find out how much the agency made on the house, you need to calculate the commission they received. The commission rate for the agency is 4.5%, so to find the commission you would multiply the sale price of the house ($342,000) by the commission rate (0.045)
$342,000 x 0.045 = $15,390
The agency made $15,390 on the sale of the house.
To find out how much the agent earned in commission, you need to first find out how much the agency earned in commission ($15,390) and then multiply that by the agent's commission rate (30%).
$15,390 x 0.3 = $4,617
The agent earned $4,617 in commission.
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To calculate the commission, multiply the selling price of the home ($342,000) by the agency's commission rate, which is 4.5%. (0.045)
$342,000 x 0.045 = $15,390
The sale of the property brought in $15,390 for the organization.
To calculate the amount of commission earned by the agent, multiply the amount of commission received by the agency ($15,390) by the agent's commission rate (30%).
$15,390 x 0.3 = $4,617
The dealer received a commission of $4,617.
What are the three graphs of linear equation?.
The graphing of linear functions can be done in three basic ways. Plotting points and then drawing a line through them is the first method. The second method makes use of the slope and y-intercept.
Transformations of the identity function f(x)=x f (x) = x are the third option.
There is a single solution, an infinite number of solutions, and there is no solution in an equational system. The number of solutions to a system can be determined algebraically and graphically.
Which three kinds of linear equations exist?Linear equations can take one of three main forms: the standard form, the point-slope form, and the slope-intercept form.
What exactly are linear equation graphs?The term "linear" refers to the graph of a linear equation with two variables. Plotting these two points and drawing the line that connects them are (x1,y1) and (x2,y2).
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Please give me the vertical value in a pair of coordinates.
The vertical values or points lying on y-axis are - 0, 3, 6, 9, -3, -6.
The ordinate of a typical two-dimensional graph is referred to as the (y) coordinate, while the (x) coordinate is referred to as the abscissa.
The abscissa, also known as the x coordinate of the point, is the distance between a point and the y-axis, scaled with the x-axis. The term "ordinate" refers to a point's separation from the x-axis when scaled with the y-axis. The first coordinate in the plane (x) is referred to as the abscissa and the second coordinate (y) is the ordinate, for instance, if (x, y) is an ordered pair in the Cartesian plane.
The coordinates of the given graph are -
(0,3) (1,6) (2,9)
(-1,0) (-2,-3)(-3,-6)
From the above coordinates, the vertical values or points lying on y-axis are - 0, 3, 6, 9, -3, -6.
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How do you simplify radicals explain and give examples?.
Simplifying radicals is the process of reducing a radical expression to its simplest form. There are several ways to simplify radicals, but the most common method is to factor .
The number or expression inside the radical sign and extract any perfect nth root factors.For example: √36 = √(36) = √(6*6) = √(6^2) = 6
Here, 36 can be factorized into 6*6, and since 6 is a perfect square, we can simplify the radical as 6.
Another example: √100 = √(100) = √(10*10) = √(10^2) = 10
Here, 100 can be factorized into 10*10, and since 10 is a perfect square, we can simplify the radical as 10.
Another way to simplify radicals is to use the product property of radicals which states that: √(a*b) = √(a) * √(b)
For example: √(1215) = √(12) * √(15) = √(4355) = √(43) * √(55) = 2√(3) * 5 = 6√(3)
Here, 1215 can be factorized into 4355. And since 43 is a perfect square, we can simplify the radical by taking the square root of 43 and 5*5.
You can simplify radicals as much as possible by applying these methods.
It's important to note that not all radicals can be simplified completely, in some cases we can simplify the radical as much as possible but still have an irrational number inside the radical.
Simplifying radicals is a useful process in algebra and trigonometry, it helps to simplify the expressions and make calculations easier.
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I need help on this asap! Greatly appreciated!
We can fill in the fields as:
a) %6.50 shipping fee: x >= $0.01 and x < $20.
b) %9.00 shipping fee: x >= $20 and x < $50.
c) %11.00 shipping fee: x >= $50 and x < $75.
d) %12.25 shipping fee: x >= $75 and x < $100.
e) %13.10 shipping fee: x >= $100.
What is inequality?
An inequality is a mathematical statement that describes the relationship between two values, where one value is not equal to the other.
a) %6.50 shipping fee: x >= $0.01 and x < $20.
b) %9.00 shipping fee: x >= $20 and x < $50.
c) %11.00 shipping fee: x >= $50 and x < $75.
d) %12.25 shipping fee: x >= $75 and x < $100.
e) %13.10 shipping fee: x >= $100.
Each inequality represents a different shipping fee category at GoodSportsBuys.com, with the total cost of items purchased (x) falling within a certain range. The inequality symbol used in each statement represents the range of values that correspond to a particular shipping fee.
Hence, we can fill in the fields as:
a) %6.50 shipping fee: x >= $0.01 and x < $20.
b) %9.00 shipping fee: x >= $20 and x < $50.
c) %11.00 shipping fee: x >= $50 and x < $75.
d) %12.25 shipping fee: x >= $75 and x < $100.
e) %13.10 shipping fee: x >= $100.
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Are 1 3 and 2 7 equivalent fractions?.
No, 1/3 and 2/7 are not the equivalent fractions.
In mathematics, equivalent fractions are those with the same denominator and differing numerators. For instance, because 2/4 and 3/6 are both equal to 1, they are both comparable fractions. Part of a whole is a fraction. Identical portions of the whole are represented by equivalent fractions.
Every fraction has an equivalent fraction, which can be found by multiplying the numerator and denominator by the same integer. In spite of their visual differences, equivalent fractions are those that indicate the same value. For instance, if you take a piece of cake, divide it into two equal pieces, then eat one of them, you will have consumed half of the cake.
let us consider,
1/3 = 2/7
0.33 = 0.29
so, it is not equals.
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Correct Question:
Are 1/3 and 2/7 equivalent fractions?.
The perimeter of AABC equals 12 in. The midpoints of the sides, M, N and K,
are connected consecutively. Find the perimeter of AMNK.
According to the Triangle midline theorem, slicing across a triangle's midline results in a section that is parallel to the base and only half as long. MNK=6 INCH
What is Triangle midline theorem?Theorem of the triangle midline: In a triangle, the midline connecting the midpoints of two sides is parallel to and half as long as the third side.
The midsegment linking the midpoints of two sides of a triangle is parallel to the third side of the triangle, and its length is half that of the third side, according to the midsegment theorem.
The midpoints of the sides AB, BC, and AC are points M, N, and K. The Triangle Midline Theorem states that
MN=1/2AC
NK=1/2AB
MK=1/2BC
The perimeter of the triangle MNK is
P(MNK)=MN+NK+MK
=1/2AC+1/2AB+1/2BC
=1/2(AC+AB+BC)
=1/2PABC
=1/2.12
=6 inch
Therefore MNK=6 INCH
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2(3b+6) =78 : Answer is 11
-2(6c-3) = -72 : Answer is 6.5
Check Right Side of both equations
Answer: The right side of the first equation is 78, and the right side of the second equation is -72. Both equations are correct.
In the first equation, 2(3b+6) = 78, if we solve for b we get b= 11.
In the second equation, -2(6c-3) = -72, if we solve for c we get c = 6.5.
Step-by-step explanation:
What is the measure of an angle if it is five times?.
The measure of an angle if it is five times its complement: 75 degrees
Let us assume that the complement of the angle measures m degrees.
we have been given the measure of the angle is five times its complement.
So we get the measure of the angle = 5 × m
We know that two angles are complementary when their measures add to 90 degrees.
So we get an equation, m + 5m = 90
We solve above equation to find the value of m.
m + 5m = 90
6m = 90
m = 90/6
m = 15 degrees
This means, the measure of complement of the angle is 15 degrees.
And the required angle would be,
5 × 15 = 75 degrees
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The comple question is:
What is the measure of an angle if it is five times its complement?.
The entire graph of the function f is shown in the figure below.
Write the domain and range of fas Intervals or unions of intervals.
domain
range
The graph of the entire function f has a domain of (-3 < x < -2) ∪ (0 < x < 1) and the range of (-5 < y < 5).
What do a function's domain and range mean?The set containing all input values is known as a function's domain.
A function's range is the collection of all possible output values.
In a graph:
The x-values, or horizontal axis, define the domain.
The y-values, or vertical axis, define the range.
The domain of the graph is given by the coordinates of x. For the given graph the x- coordinates are:
(-3 < x < -2) ∪ (0 < x < 1)
The range of the graph is given by the y-coordinates of the graph. For the given graph the y-coordinates are:
(-5 < y < 5).
Hence, the graph of the entire function f has a domain of (-3 < x < -2) ∪ (0 < x < 1) and the range of (-5 < y < 5).
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if do= (6y-17.81) and ro= (3y+10.54) what is the length of hv
If do= (6y-17.81) and ro= (3y+10.54) then the measure of length of hv = 26
What about the length?A measurement that is longer than or longest than another. a dimension or distance that can be measured. Dimensions: 10 ft. Weights and Measures Table, Metric System Table being lengthy is a quality or a state.
In addition to utilising handspan, foot span, and other methods, one can measure length in many units, such as centimetres, inches, metres, and so on. The several types of units used to measure length can be divided into two categories: standard units and non-standard units.
The number of digits in the base-numerical for, as determined by the formula, determines a number's base length.
HF = 10x + 6
VH = 8 x – 14 and
FV = 4x+10
Substitute
8x - 14 + 4x + 10 = 10x +6
12x - 4 = 10x + 6
12x - 10x = 6 + 4
2x = 10
x = 5
Identify the VH's length.
VH = 8x - 14
VH = 8(5) - 14
VH = 26
Consequently, VH is 26 units long.
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What are the types of multiplication method?.
The types of multiplication method: addition method, long multiplication, grid method, drawing lines and by splitting two digit numbers into Tens and Ones
We know that the multiplication is nothing but a method of finding the product of two or more numbers.
In case of small numbers a multiplication is considered repeated addition, and we can solve simple multiplication problems by adding repeatedly.
But in case of larger numbers, we need to do long multiplication.
Multiplication methods:
1) by Repeated Addition
Consider example 4 × 5
This means, we can solve it as by adding 4 repeatedly five times 4 4 + 4 + 4 + 4 + 4 OR by adding 5 repeatedly four times 5 + 5 + 5 + 5
2) Long Multiplication
3) grid method,
4) by drawing lines
3) by splitting two-Digit Numbers into Tens and Ones
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8.
(6.6) Lizzy is buying oranges and pineapples for an evemt. Oranges cost $3 per pound and
pineapples cost $4 per pound. Lizzy needs to buy at least 16lbs of fruit for her event, but she only
has $60 to spend.
a) Define the variables and write a system of inequalities to represent this situation,
In mathematics, inequalities specify the connection between two non-equal numbers. Equal does not imply inequality.
Explain about the inequalities?
In mathematics, "inequality" refers to a relationship between two expressions or values that is not equal to each other. Therefore, inequality emerges from a lack of balance.
The equation-like form of the formula 5x 4 > 2x + 3 has an arrowhead in place of the equals sign. It is an illustration of inequity. This shows that the left half, 5x 4, is bigger than the right part, 2x + 3. Finding the x numbers for which the inequality holds true is what we are most interested in.
Polynomial inequality, rational inequality, and absolute value inequality are the various types of inequalities that can exist in mathematics.
= Orange she bought 8 kg x 3 = $24
= Pineapple she bought 9KG X 4 = $36
= $24 +36
= $60
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Answerrrr....
....................
(i) The required frequency is 12 for the class interval 50-60.
(ii) The mean height of students in a class is 155.3.
(iii) The median of the given data is 33.
(i)
Class Interval Frequency f Mid-value x fx
0-10 22 5 110
10-20 24 15 360
20-30 35 25 875
30-40 30 35 1050
40-50 27 45 1215
50-60 m 55 55m
60-70 6 65 390
70-80 4 75 300
∑f = 148+m ∑fx = 4300+55m
The mean of the data set shown in the table above is 31.
mean = ∑fx/∑f
Substitute the known values in the above formula, and we get
31 = (4300+55m)/(148+m)
31(148+m) = 4300+55m
4588 +31m = 4300+55m
55m - 31m = 4588 - 4300
24m = 288
m = 288/24
m = 12
Thus, the required frequency is 12 for the class interval 50-60.
(ii)The table below summarizes the data about the heights of students in a class.
Height (in cm) (x) d = (x -A)/10 Number of students (f) fd
130-140 135 -2 8 -16
140-150 145 -1 6 -6
150-160 155 0 14 0
160-170 165 1 20 20
170-180 175 2 12 24
∑f = 60 ∑fd = 22
Mean = A + ∑fd/∑f
Mean = 155 + 22/60
Mean = 155 + 0.3
Mean = 155.3
So, the mean height of students in a class is 155.3.
(iii) Given that the mean of data is 27 and the mode is 45
Mode = 3Median - 2Mean
45 = 3Median - 2(27)
45 = 3Median - 54
3Median = 54 + 45
Median = 99/3
Median = 33
Thus, the median of the given data is 33.
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One rule of thumb for estimating crowds is that each person occupies 360 square inchesUse this rule to estimate the crowd size of a section that is 20 feet deep by 20 feet wide of a parade route. HINTthere are 12 inches in one foot
Therefore , the solution of the given problem of surface area comes out to be 160 peoples can be fit in that region.
Surface area is definedIts surface area is a good indicator of how much space it takes up overall. When estimating the surface area of a three-dimensional shape, the entire environment is taken into consideration. Its surface area determines how big something is overall. The sum of the faces on any and all six of a cuboid's rectangular sides yields the amount of water contained within.
Here,
Given : one person occupies 360 square inches
is 2.5 square foot.
So,
The given dimension of region are :
length = 20 feet and width 20 feet.
Thus,
=> Area = 20*20
=> Area = 400 square foot.
So , number of people in that area will be :
=> 400/2.5
=> 160 peoples.
Therefore , the solution of the given problem of surface area comes out to be 160 peoples can be fit in that region.
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Given the relation, B = { (4,2), (5,-3), (12,4), (-3,6), (x, 7)), which of the numbered choices represents a value for x which will make B a function? 1) -3 2) 4 3) 5 4) 7
The numbered choice 7 represents a value for x which will make B a function.
What is a function?A relation between a collection of inputs and outputs is known as a function. A function is a connection between inputs in which each input is connected to precisely one output. Each function has a range, co-domain, and domain.
Given:
A relation B = {(4,2), (5,-3), (12,4), (-3,6), (x, 7)}.
To prove that the relation is a function:
Each input value gives only one output value.
Input → output
4 → 2
5 → -3
12 → 4
-3 → 6
x → 7.
So, the value of x can not be 4, 5, 12, -3.
From the options, the value of x is 7.
Therefore, the value of x is 7.
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An 18-ounce bottle of milk costs $3.60. A 12-ounce bottle of milk costs $3.00. Which bottle of
milk costs less per ounce and by how much?
Answer:
the 18 ounce bottle by 0.05
Step-by-step explanation:
the 18 ounce bottle costs 0.2
the 12 ounce bottle costs 0.25
Rudy learned to sing a total of 14 pieces over the course of 7 weeks of voice lessons. After 10 weeks of voice lessons, how many pieces will Rudy be able to sing, in total? Solve using unit rates.
the answer should be 35 songs in total
How do you solve systems of equations with 3 variables using substitution?.
We can solve systems of equations with 3 variables using substitution by finding the value of one variable from one equation then putting the value of that variable in second equation and 3 equation then solving them properly.
The algebraic approach for system can significantly systems of equations at once is called the substitution method. As the name implies, this method involves substituting a variable's value from one equation into another. In this manner, a pair of linear equations are combined into a single, simple linear equation with just one variable.
Equations linear in three variables:
1. Use all but one of your equations to find all the variables that can be expressed in terms of one of the variables.
2. Determine the variable's numerical value using the one remaining equation.
3. Using that figure, determine the answers to all of the other variables.
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Alyssa has a cell-phone plan that charges a fixed price for each text message, no mater how many she sends. The table below shows the number of text messages Alyssa sent and the amounts she was charged for them on her last three bills.
(Table showed in attached image)
Using x for the number of text messages sent and y for the amount charged, find the equation of the line that models this relationship and find the rate Alyssa is charged for each text message.
The equation of the line is ____ .
Alyssa is charged $____ for each text message.
Answer: Alyssa is charged $0.15 for each text message.
Step-by-step explanation: 5-star
1) Which of the following pairs of ratios does NOT form a proportion?
a) 2/7, 8/28
c) 27/9, 12,4
b) 36/30, 7/6
d) 52/13, 4/1
36/30, 7/6 does NOT form a proportion.
What is proportion?A proportion refers to the similarity of the two ratios.Write proportion to help you find equivalent ratios and solve for unknown quantities.A proportion is an equation that equates two ratios.For example, if you have one boy and her three girls, the ratio can be written as:1:3 (for every boy he has 3 girls) 1/4 are boys and 3/4 are girls. 0.25 boys (1 divided by 4)Direct proportionality or direct proportion is the ratio of two quantities where the ratio is equal to a constant value.It is denoted by the proportional sign ∝.In fact, the same symbol is used to represent the inverse proportion, because the difference in magnitude is reversed here.36/30 = 16/15 not equal to 7/6.
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