Even though A and B are both square, AB always equals BA.
How to Prove that if ab=ac, then b=c ?Could someone please assist me in demonstrating that b=c follows from ab=ac and a does not equal 0. You can only apply the field axioms. Here is my try.
ab=ac then, ab-ac=0
a(b-c)=0
a(0)=0 Since a cannot equal zero (this has already been shown), (b-c) must also equal zero, leaving us with...
b-c=0
b=c
The only issue I have with the above is that I presupposed that a did not equal 0. I'm not sure if this is okay because the original theorem I'm attempting to prove includes the claim that "a does not equal 0."
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WILL GIVE YOU 85 POINTS IF YOU ANSWER THIS QUESTION ASAP
the accompanying table shows the number of math problems completed correctly by students on a recent test. what is the average number of problems completed correctly by all students?
Answer:
B) 69.6
Step-by-step explanation:
Please help, I'm very confused:
1. Give another name for plane p
2. Name a line that intersects the plane
3. Name two rays
4. Name three points in plane p
1.. Plane R and plane P intersect at AB.
2.. 3 points that are collinear are A, D and B.
3. Planes can be named indicating three points that are on the same plane yet not on the same line.
4. Coplanar points are three or more points that lie on the same plane.
What is Coplanar points?
When three points that are not on the same line can be used to describe a plane, it is said to be a plane. Line AB is the point where planes P and R intersect. Plane P is horizontal and Plane R is vertical. These two planes intersect at this point, so line AB is shared by both planes.
A, D, and B are the three collinear points. This occurs when three or more points are all aligned in a single straight line, as the name collinear suggests.
Three locations that are on the same plane but not on the same line might be termed as a plane. These points are not collinear, to put it another way. DBG or FAD are two ways to represent Plane R.
Three or more points on the same plane are referred to as coplanar points. Since planes are typically flat surfaces, any three or more points located there are considered coplanar points. The four coplanar points ACDE are located on plane P.
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for an electron in the state of hydrogen, what is the probability of being in a spherical shell of thickness at distance (a) (b) and (c) from the proton?
Thus, the probability of the electron being in a spherical shell at distance (a) from the proton is e^(-a/a0), at distance (b) is e^(-b/a0), and at distance (c) is e^(-c/a0).
What is meant by probability?Probability is a metric for determining the possibility or chance of an event happening. It is a mathematical concept that measures the unpredictability of an occurrence and is frequently stated as a decimal or fraction. For example, if the probability of flipping a coin and obtaining heads is 0.5, there is a 50% chance of flipping heads. The number of favorable outcomes to the total number of potential outcomes is used to compute probability. In other words, it is the number of ways an event may occur divided by the total number of conceivable outcomes. Probability is used to make predictions and take wise decisions in a variety of disciplines, including mathematics, science, finance, and engineering.
How to solve?
If we assume the electron is in a hydrogen 1s orbital, the probability density function is given by the square of the 1s wavefunction, which is:
p(r) = (1/πa0^3) e^(-r/a0)
P(r, r+δr) = ∫p(r')dV = ∫p(r')4πr'^2dr'
For the given distances (a), (b), and (c), the probabilities are:
P(a) = ∫p(r')4πr'^2dr' = (1/πa0^3) ∫e^(-r'/a0)4πr'^2dr' = (1/πa0^3) * 4π * a0^3 * e^(-a/a0) = e^(-a/a0)
P(b) = e^(-b/a0)
P(c) = e^(-c/a0)
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PLEASE HELP Clinical trials involved treating flu symptoms with a new medicine. Among 724 patients treated with the medicine, 72 experienced a side effect of nausea. The claim is that the rate of nausea is greater than the 6% rate experienced by flu patients given a placebo. Find a test statistic of the proportion.
z = 4.47
z = –1.41
z = 4.53
z = 1.41
The test statistic of the proportion is given as follows:
z = 4.47.
How to calculate the test statistic for the proportion?The equation that gives the test statistic for a proportion is given as follows:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
In which:
[tex]\overline{p}[/tex] is the sample proportion.p is the expected proportion from the population, or the test proportion.n is the sample size.In the context of this problem, the values of these parameters are given as follows:
[tex]p = 0.06, n = 724, \overline{p} = \frac{72}{724} = 0.0994[/tex]
Hence the test statistic for the proportion is calculated as follows:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
[tex]z = \frac{0.0994 - 0.06}{\sqrt{\frac{0.06(0.94)}{724}}}[/tex]
z = 4.47.
Meaning that the first option is correct.
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Which graph represents the solution to the inequality 0.25 is less than the product of a number and −0.5?
number line with closed circle on 0.5 with arrow shaded right
number line with open circle on point on negative 0.5 with arrow shaded left
number line with closed circle on negative 2 with arrow shaded right
number line with open circle on 2 with arrow shaded left
A contractor needs to buy nails to build a house. The nails come in small boxes and large boxes. Each small box has 50 nails and each large box has 350 nails. The contractor bought 3 more small boxes than large boxes, which altogether had 2950 nails. Write a system of equations that could be used to determine the number of small boxes purchased and the number of large boxes purchased. Define the variables that you use to write the system.
The number of small boxes and large boxes for the given linear equation condition purchased is 10 and 7 respectively.
What is a linear equation?
Equations whose variables have a power of one are called linear equations. One example with one variable is where ax+b = 0, where a and b are real values and x is the variable.
According to the question, a builder needs to purchase nails in order to construct a house.
Both small and large boxes of nails are provided. There are 50 nails in each small box and 350 in each large box.
The contractor purchased 3 more small boxes than large boxes, hence it is assumed that he purchased an 'x' number of large boxes.
He purchased (x+3) small boxes.
So, 50(x+3) + 350(x) = 2950.
50x + 150 + 350x = 2950.
400x = 2950 - 150.
400x = 2800.
x = 7.
∴ The no. of large boxes he purchased is 7.
∴ The no. of small boxes he purchased is 10.
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Factorise the following:
x² 18x + 81
Answer:
(x+9)(x+9)
Step-by-step explanation:
Let's factor x2+18x+81
x2+18x+81
hope this help xxx
Ms Hoblin needs to buy 452 prizes to fill up the prize bins.If 14 Prizes comes in each pack,how many packs will she need to purchase to completely fill up the prize bins.
Answer:
32 Packs
Step-by-step explanation:
Ms Hoblin will need to buy 452/14 = <<452/14=32>>32 packs of prizes.
Alternatively, you could divide 452 by 14 and then round up to the nearest whole number to determine the number of packs that she needs to buy. In this case, 452/14 = 32.64, so she would need to buy 33 packs of prizes.
Solve for all possible values of x.
√9x-9 = x + 1
Omg help someone i don’t get this
Answer:
x = 2 , x = 5
Step-by-step explanation:
assuming you mean
[tex]\sqrt{9x-9}[/tex] = x + 1 ( square both sides to clear the radical )
([tex]\sqrt{9x-9}[/tex] )² = (x + 1)² ← expand using FOIL
9x - 9 = x² + 2x + 1 ( subtract 9x from both sides )
- 9 = x² - 7x + 1 ( add 9 to both sides )
0 = x² - 7x + 10 ← factor the quadratic
consider the factors of the constant term (+ 10) which sum to give the coefficient of the x- term (- 7)
the factors are - 2 and - 5 , since
- 2 × - 5 = + 10 and - 2 - 5 = - 7 , then
(x - 2)(x - 5) = 0
equate each factor to zero and solve for x
x - 2 = 0 ⇒ x = 2
x - 5 = 0 ⇒ x = 5
As a check
substitute these values into the equation and if both sides are equal then they are the solutions.
x = 2
left side = [tex]\sqrt{9(2)- 9}[/tex] = [tex]\sqrt{18-9}[/tex] = [tex]\sqrt{9}[/tex] = 3
right side = 2 + 1 = 3
left side = right side , so x = 2 is a solution
x = 5
left side = [tex]\sqrt{9(5)-9}[/tex] = [tex]\sqrt{45-9}[/tex] = [tex]\sqrt{36}[/tex] = 6
right side = 5 + 1 = 6
left side = right side, so x = 5 is a solution
Sophia had $112 in her bank account. After she bought some carne asada fries for her and her friends that cost $8 for each, she now has $64 in her account. How many carne asada fries did she buy?
Answer:
6
Step-by-step explanation:
1) Total-Amount left
112-64=48
So now we know how much money she spent on the carne asada fries. Now let's get on with the next step.
2) Amount Spent/Cost for carne asada fries
48/8=6
So they bought 6 carne asada fries
I hope this helps!!!
help this nobody my friend
Answer:
t=2/f-5
Step-by-step explanation:
Multiply both sides by "t"subtract 5t from both sidesfactor out "t" from the expressiondivide both sides by "f-5"The distribution of ages of licensed drivers shopping at the kalish county mall is normally distributed with mean 41 and standard deviation 7. A person will be selected at random. Round your answers to the nearest hundredth.
According to the given statement 16% is the probability that the person is age 48 or older.
How to interpret a standard deviation?A metric of a data set's deviation from the mean is referred to as "standard deviation" (or ""). While a high standard deviation indicates that the numbers are more spread, a smaller standard deviation suggests that the data are clustered around the mean.
Briefing:After calculating the z-score, we will look up the value in the table on page (718–719).
We will employ the equation, to determine the z-score.
z= x−μ / σ
How is x=48
μ=41
σ=7 the z-score is,
z = 48 - 47 /7
z = 7 / 7
z = 1
The value for z=1 in the table is 0.84130, meaning that the region below the curve represents people who are 48 years of age and older. However, we are looking at the area that represents people who are 48 years of age and older, hence,
1−0.8413
=0.1587≈0.16
=16%
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The complete question is-
The distribution of ages of licensed drivers shopping at the Kalish County Mall is normally distributed with mean 41 and standard deviation 7. A person will be selected at random. Round your answers to the nearest hundredth. What is the probability that the person is age 48 or older?
Which equations are true for x = –2 and x = 2? Select two options x2 – 4 = 0 x2 = –4 3x2 + 12 = 0 4x2 = 16 2(x – 2)2 = 0
The equations that are true for x = -2 and x = 2 are x^2 - 4 = 0 and 2(x - 2)^2 = 0.
For x = -2, the equation x^2 - 4 = 0 becomes (-2)^2 - 4 = 0, which simplifies to 4 - 4 = 0, and therefore this equation is true when x = -2.
Similarly, for x = 2, the equation 2(x - 2)^2 = 0 becomes 2((2 - 2)^2) = 0, which simplifies to 2(0)^2 = 0, and therefore this equation is also true when x = 2.
The other equations, x^2 = -4, 3x^2 + 12 = 0, and 4x^2 = 16, are not true for x = -2 or x = 2. For example, for x = -2, the equation 3x^2 + 12 = 0 becomes 3(-2)^2 + 12 = 0, which simplifies to -24 + 12 = -12, and therefore this equation is not true when x = -2. Similarly, for x = 2, the equation 4x^2 = 16 becomes 4(2)^2 = 16, which simplifies to 16 = 16, and therefore this equation is true when x = 2. However, since the problem asks for equations that are true for both x = -2 and x = 2, the equation 4x^2 = 16 is not a correct answer because it is only true when x = 2.
the length of the hypotenuse of a right triangle in 23in.one leg measures 16in.find the length of the other leg. round your answer to two decimal places
Answer:
16.52
Step-by-step explanation:
hyp²= opp²+adj²
let opp =16in
hyp= 23in
adj²=23²-16²
=529 -256
= 273
adj =√273
= 16.52
Consider the relation below
Is it a function?
Is the relation a one to one function?
Is the inverse of the relation below itself of function ?
Answer: Yes to all 3 questions
It is a function. The function is one-to-one.The function has an inverse, which is also a function.==================================================
Explanation:
VLT = vertical line test
HLT = horizontal line test
The given curve passes the VLT since it's not possible to draw a single vertical line through more than one point on the blue curve. Therefore, we have a function. Any input (x) leads to exactly one output (y).
The curve also passes the HLT through similar reasoning (use a horizontal line this time of course). This tells us the function is one-to-one. Each input leads to a unique output.
The keyword "unique" is important in the previous paragraph. It's needed to help set up the inverse. Since this curve passes the HLT, we know the inverse exists and it is a function. The inverse itself will pass the VLT.
Note: recall you reflect the given curve over the line y = x to form the inverse curve.
I REALLY NEED HELP WITH THIS QUESTION!!!!
Jim took clothes to the cleaners three times last month. First, he brought 2 shirts and 2 pairs of slacks and paid $17.96. Then he brought 6 shirts, 3 pairs of slacks, and 2 sports coats, and paid $49.89. Finally, he brought 5 shirts and 1 sports coat and paid $21.94. How much was he charged for each shirt, each pair of slacks, and each sports coat?
Each shirt = $2.99, each pair of slacks = $5.99, and each sports coat = $6.99.
What is total ?Total refers to a whole or full amount, and the verb "to total" means to combine two numbers or to destroy anything. In mathematics, you add integers to get the total; the outcome is the total. The result of adding 8 and 8 is 16.
Let shirts equal SH, Slacks equal S, and sports coats equal SC.
2SH+2S equals 17.96.
6SH+3S+2SC=49.89
5SH+1SC=21.94
We'll use them to address
6SH+3S+2SC=49.89
-6SH-6S=--53.88, multiplying by -3 to eliminate SH.
-3S+2SC=-3.99
-30SH-6SC=-131.64, multiplying the third by -6 to eliminate SH
30SH+15S+10SC=249.45,multiplying by 5 to eliminate SH.
15S + 4SC = 117.81
Now 15S + 4SC = 117.81 and -3S+2SC=-3.99
S = $5.99
As a result, we may calculate SH as $2.99 and use the value of S and SH we get SC = $6.99
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Which of the following is true regarding the relationship between a catalyst and a chemical reaction?
Catalysts are not specific to reactions.
A single catalyst can initiate many different types of reactions.
Many catalysts are often involved in a single chemical reaction.
Each reaction has its own unique catalyst.
The true option regarding the relationship between a catalyst and a chemical reaction is D. Each reaction has its own unique catalyst.
What is a catalyst?A catalyst is a substance that accelerates the rate of a chemical reaction without affecting the end product. They only have an effect on the rate of the reaction, not the yield.
Catalysts offer an alternative reaction pathway with lower activation energy than uncatalyzed reactions. It raises the frequency of collision and, as a result of the increased collision, lowers the activation energy of the reaction.
A chemical reaction is a process that converts one or more substances, known as reactants, to one or more different substances, known as products. Chemical elements or compounds are examples of substances.
A chemical reaction rearranges the constituent atoms of the reactants to produce various products. The properties of the products differ from the properties of the reactants. It is distinct from physical changes, which include state changes such as ice melting to water and water evaporating to vapor.
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What i the volume of the following rectangular prim? Volume ==equal unit^3 3 cubed
Since the side length is three units, the specified rectangular prism's volume will be 27 units.
What is volume?Each thing in three dimensions takes up some space. The volume of this area is what is being measured. The space occupied within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity. The capacity of an object is measured by its volume. For instance, a cup's capacity is stated to be 100 ml if it can hold 100 ml of water in its brim. The quantity of space occupied by a three-dimensional object can also be used to describe volume.
Here,
Length of side=3 units
Volume=(side)³
=3³ unit
=27 unit³
The length of side is 3 unit, so the volume of the given rectangular prism will be 27 unit.
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Can someone help me with this math quick plsss
Answer: nope
Step-by-step explanation:
James and Bethany Morrison are celebrating their 10th anniversary by having a reception at a local reception hall. They have budgeted $3,500 for their reception. If the reception hall
charges a $50 cleanup fee plus $32 per person, find the greatest number of people that they may invite and still stay within their budget.
James and Bethany can invite at most people to the reception.
(Round down to the nearest whole person.),
Step-by-step explanation:
James and Bethany Morrison are celebrating their 10th anniversary by having a reception at a local reception hall. They have budgeted $3,500 for their reception. If the reception hall charges a $50 cleanup fee plus $32 per person, find the greatest number of people that they may invite and still stay within their budget. James and Bethany can invite at most people to the reception. (Round down to the nearest whole person).
3,500 = 32p + 50
subtract 50 from both sides:
3,450 = 32p
divide both sides by 32:
p = 107.8125
because you cannot invite part of a person, round down to 107 people.
Answer:
107
Step-by-step explanation:
You have $3,450 to work with and you divide that by 32, which is the cost per person, and you come up with 107.8... You can round up to 108, but you risk(because you are) being over budget.
A tore i intructed by corporate headquarter to put a markup of 11% on all item. An item coting $18 i diplayed by the tore manager at a elling price of $2. A an employee, you notice that thi elling price i incorrect. Find the correct elling price. What wa the manager' likely error?
When the actual selling price is $20, the store manager is showing a $18 item with a $2 price tag.
What does Percentage mean?One can calculate the percentage by dividing the value by the total value and multiplying the result by 100. (Value/Total Value)100% is the formula for calculating percentages.
To convert a decimal number, such as 0.57, to a percentage, just multiply it by 100. Therefore, 0.57 times 100 equals 57. Therefore, 0.57 is a percentage that equals 57%. Another example is 0.03 x 100 = 3%. Percentages are just fractions with a denominator of 100. To show that a number is a percentage, we place the percent sign (%) next to it.
For instance, if you properly answered 75 out of 100 questions on a test, you would have received a 75% grade (75/100).
Here,
Item cost is $18.
Price to Sell = 18 + 11% ×18
= $19.98
= $20
The store manager is displaying an item that cost $18 for a selling price of $2 when the true selling price is $20.
So,
When the actual selling price is $20, the store manager is showing a $18 item with a $2 price tag.
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find the slope and y intercept for the graph of : 2x+4y=20
you can either graph it or solve it algebraically
move the parts of the equation to fit the sctructure of y = mx + b
2x + 4y = 20
4y = -2x + 20
divide by 4 on both sides to get 'y' by itself
y = -2/4x + 20/4
y = -1/2x + 5
this equation tells you the 'y intercept' and the slope
slope; -1/2
y intercept; 5
4(8x-1)=2(2x-2)
explain
Answer:
0
Step-by-step explanation:
4(8x–1) = 2(2x–2)
32x–4 = 4x–4
32x–4x = –4+4
28x = 0
x=0/28
x= 0
Answer:
x=0
Step-by-step explanation:
4(8x-1)=2(2x-2)
Step 1) 32x-4=4x-4
Step 2) 28x=0
Step 3) x=[tex]\frac{0}{28\\}[/tex]
Step 4) x=0
Select the correct answer. The sum of two consecutive numbers is 157. This equation, where n is the first number, represents the situation: 2n + 1 = 157. What is the first number? A. 77 B. 78 C. 79 D. 80
Answer:
2n + 1 = 157
2n = 157 - 1
2n = 156
n = 156/2
n = 78
Step-by-step explanation:
hope this helps
Write a linear equation in slope intercept form to represent the number of miles each car can drive on one tank of gas. State the domain and range.
car #1: y=28x+607.6
car #2: y=80x+568
car #3: y=20x+528.4
How do I find my domain and range for these equations?
The domain and range of the equations for the three cars using the hypothetical condition that x represents additional gas added to the tank are;
Car #1
Domain; 0 ≤ x < ∞
Range; 607.8 ≤ y < ∞
Car #2
Domain; 0 ≤ x < ∞
Range; 568 ≤ y < 0
Car #3
Domain; 0 ≤ x < x
Range; 528.4 ≤ y < ∞
What is an equation?An equation is a statement that indicates that two expressions be equivalent by joining them with an equals sign.
The specified equations for three cars are;
Car #1: y = 28·x + 607.6
Car #2: y = 80·x + 568
Car #3: y = 20·x + 528.4
The domain of a function is the set of possible input values (x-values) of the function
The range is the set of possible output values (y-values) of the function
Let y represent the number of miles driven and let x represent the additional gas added to the car, we get;
The domain of car #1
The additional number of gallons of gas car #1 can drive receive has a domain of 0 ≤ x < ∞
The range for car #1
The total number of miles car #1 can drive = 607.6 ≤ y < ∞
The domain for car #2
The additional amount of gas car #2 receives is; 0 ≤ x < ∞
The range for car #2
The distance car #2 can drive is; 568 ≤ y < ∞
The domain for car #3
The additional volume of gas car #3 receives is; 0 ≤ x < ∞
The range of the function for car #3
The number of miles car #3 can drive is; 528.4 ≤ y < ∞
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4. What is one point of intersection between the graphs of the functions
f(x) = (x+6)(x+2) and g(x) = x + 6?
A. (0,6)
B. (-1,5)
C. (-2,0)
D. (-4,-4)
the point of intersection of the given function will be (-1,5).
What is a function?
A unique kind of relation called a function is one in which each input has precisely one output. In other words, the function produces exactly one value for each input value. The graphic above shows a relation rather than a function because one is mapped to two different values. The relation above would turn into a function, though, if one were instead mapped to a single value. Additionally, output values can be equal to input values.
The x-values are input into the function machine. The function machine then performs its operations and outputs the y-values. The function within can be any function.
the functions f(x) = (x+6)(x+2) and g(x) = x + 6
Equating them with each other
(x+6)(x+2) = x + 6
x+2 = 1
x = -1
f(-1) = 5
So the point of intersection of the given function will be (-1,5).
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On average, Jonathan drink 2/3 of a 10-ounce gla of water in 2 4/5 hour. How much water doe he drink, in glae per hour?
In linear equation,(10/21) glasses of water does she drink, in glae per hour.
What in mathematics is a linear equation?
A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept.
Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.
3/4 of hour she drinks (2/3) of a glass
So, in 1 hour she drinks (2/3)×(5/14) of a glass
So, in 1 hour she drinks (10/21) glasses of water.
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7 of 8
→
Given that A, O & B lie on a straight line segment, evaluate the size of the smallest angle.
C
A
(3a + 8)
0°
(60 - a)
O
(4a-38)
The diagram is not drawn to scale.
D
B
Answer:
smallest angle = 35
Step-by-step explanation:
the 3 angles lying on the straight line AOB sum to 180° , then
3a + 8 + 60 - a + 4a - 38 = 180 , that is
6a + 30 = 180 ( subtract 30 from both sides )
6a = 150 ( divide both sides by 6 )
a = 25
Then
3a + 8 = 3(25) + 8 = 75 + 8 = 83°
60 - a = 60 - 25 = 35°
4a - 38 = 4(25) - 38 = 100 - 38 = 62°
the smallest angle is 35°
helppp pleaseeeeeeeeeeeeeee
Answer:
the answer is d
Step-by-step explanation:
x is -2 and y is
Derivative of log(tanhx)
Derivative of log(tanhx) = 2cossec(2x)
Let us assume y = log (tan hx)
On differentiating both sides ,
[tex] \frac{dy}{dx \: } = \frac{d \: log(tanhx)}{dx} [/tex]
[tex] \frac{dy}{dx} = \frac{d log( \tan(hx) ) }{d \tan(hx).d \tan(hx) } \times dx[/tex]
[tex] \frac{dy}{dx} = \frac{1}{ \tan(hx) \times \sec( {h}^{2x} ) } [/tex]
[tex] \frac{dy}{dx} = \frac{ \cos(hx) }{ \sin(hx) } \times \frac{1 }{ \cos(h {}^{2} ) } [/tex]
[tex] \frac{dy}{dx} = \frac{2}{2 \sin(hx). \cos(hx) } [/tex]
[tex] \frac{dy}{dx} = \frac{2}{ \sin(h)(2x) } [/tex]
dy/dx = 2 cos sec (2x)
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