El precio final, esto es, el precio con descuento, del bolso es igual a $ 36.000.
¿Cómo calcular el precio final del bolso?
En este problema debemos determinar el precio final de un bolso (C') adquirido por un cliente con descuento, igual al precio original (C) menos el descuento, descrito en la siguiente fórmula:
C' = C · (1 + r / 100)
Donde r es la tasa de descuento. Nótese que existe descuento para 0 < r < 100.
Si sabemos que C = 40.000 y r = - 10, entonces el precio final del bolso es:
C' = 40.000 · (1 - 10 / 100)
C' = 36.000
El precio final del bolso es igual a $ 36.000.
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is a stockbroker. earns 12% commission each week. Last week, sold 7200$ worth of stocks. How much did make last week in commission? If averages that same amount each week, how much did make in commission in 2011?
The amount earned as commission in 2011 is $44928
How to determine the amount earned as commission?From the question, we have the following parameters that can be used in our computation:
Commission percentage = 12%
Average sales per week = $7200
The amount earned as commission in the 2011 is then calculated as
Amount = Commission percentage x Average sales per week x Number of weeks
Substitute the known values in the above equation
So, we have
Amount = 12% x 7200 x 52
Evaluate
Amount = 44928
Hence, the commission amount is $44928
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Which i the inequality in factored form that repreent the region greater than or equal to the quadratic function with zero –3. 5 and 11. 5 and include the point (8. 5, –54) on the boundary?
y greater-than-or-equal-to three-halve (x minu 3. 5)(x 11. 5)
y greater-than-or-equal-to negative three-halve (x 3. 5)(x minu 11. 5)
y greater-than-or-equal-to negative three-halve (x minu 3. 5)(x 11. 5)
y greater-than-or-equal-to three-halve (x 3. 5) (x minu 11. 5)
The inequality is represented by the polynomial y ≥ 3.6 · (x - 11.5) · (x + 3.5).
What is the expression of the quadratic inequality?
Herein we must derive the quadratic expression within an inequality of the y ≥ f(x) based on its two roots and a known point on the curve. We can find the coefficients of the quadratic function by solving this system of linear equations:
(x₁, y₁) = (- 3.5, 0)
12.25 · a - 3.5 · b + c = 0 (1)
(x₂, y₂) = (11.5, 0)
132.25 · a + 11.5 · b + c = 0 (2)
(x₃, y₃) = (8.5, - 54)
72.25 · a + 8.5 · b + c = - 54 (3)
The solution of the system is a = 3.6, b = - 54, c = 144.9.
Thus, the inequality is represented by the polynomial y ≥ 3.6 · x² - 54 · x + 144.9, whose factored form is determined by the quadratic formula:
y ≥ 3.6 · (x² - 15 · x + 40.25)
y ≥ 3.6 · (x - 11.5) · (x + 3.5)
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What’s the unit rate for three dollars for 2 1/2 hours of work
The unit rate of three dollars for 2 1/2 hours of work is 1.2.
The rate is a ratio of change in one quantity with respect to other. The unit rate is a rate such that the denominator of the rate must be one. An item's unit rate is its rate for one of them. How many units of the first type of quantity are needed to make up one unit of the second type is expressed using a unit rate (or unit ratio).
Now, finding the unit rate for three dollars for 2 1/2 hours of work,
Unit rate [tex]=\frac{3}{2.5}[/tex]
= 1.2
Therefore, the unit rate of three dollars for 2 1/2 hours of work is 1.2.
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Find the value of 8y +3 given that -11y-9=2. Simplify your answer as much as possible.
Answer:
-5
Step-by-step explanation:
We need to find the value of y to find the value of 8y + 3. So,
-11y - 9 = 2
Add 9 on both sides
-11y = 11
Divide 11 by -11
y = -1
Step 2:
8 x -1 + 3
-8 + 3
-5
So the value of 8y + 3 is -5
Marc has $256 to spend on coins for his collection. He buys the first coin for $8.
If he pays twice as much for each coin as he paid for the previous coin, how many coins can he buy in all?
OA. 7
OB. 6
O C. 5
OD. 4
Answer:
Option C: 5
Step-by-step explanation:
1st coin = $8
2nd coin = $16
3rd coin = $32
4th coin = $64
5th coin = $128
Total spent = $248
The relative frequency table describes the relationship between students who completed an exam review and their performance on the exam
Passed exam Did not pass exam Row Totals
Completed exam review
55%
10%
65%
Did not complete exam review
20%
15%
35%
Column Totals
75%
25%
100%
Part A: What is the percentage of students who completed the exam review, given that they passed the exam? Round to the nearest percentage. (2 points)
Part B: What is the percentage of students who completed the exam review, given that they failed the exam? Round to the nearest percentage (2 points)
Part C: Is there an association between completing the exam review and passing the exam? Justify your answer. (2 points)
From the given relative frequency table , answer of the following questions are as follow:
a. Percentage of students those who have completed the exam review with the condition that they have passed the exam is given by 55%.
b. Percentage of students those who have completed the exam review with the condition that they have failed the exam is given by 10%.
c. Yes, there is association between the two completing the exam review and passing the exam is only 55%.
As given in the question,
From the given relative frequency table , answer of the following questions are as follow:
Total percentage of students completing the exam review = 65%
a. Completed the exam review with the condition that they have passed the exam = 55%
b. Completed the exam review with the condition that they have failed the exam = 10%
c. Yes, there is association between the two completing the exam review and passing the exam is only 55% and those who have completing the exam review but failed are 10%.
Therefore, from the given relative frequency table , answer of the following questions are as follow:
a. Percentage of students those who have completed the exam review with the condition that they have passed the exam is given by 55%.
b. Percentage of students those who have completed the exam review with the condition that they have failed the exam is given by 10%.
c. Yes, there is association between the two completing the exam review and passing the exam is only 55%.
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Select all the values (d, n) that could be solutions to the equation.
(118,209)
(172,101)
(233,21)
(0.50,435)
(0,445)
Diego is collecting dimes and nickels in a jar. He has collected $22.25 so far. The relationship between the numbers of dimes and nickels, and the amount of money
in dollars is represented by the equation 0.10d+0.05n = 22.25.
The values (d,n) that will be the solution of the equation are
A. (0,445)
D.(118,209)
E.(172,101)
The equation that we have in this problem is:
0.10d+0.05n=22.25
here
d is the number of dimes
n is the number of nickels
Diego collected a total of $22.25 and put it in the jar.
Simply substitute each pair (d,n) into the left term of the equation and see if the answer is 22.25 to determine which values can be the equation's solutions.
Now,
A. (0,445)
0.10d+0.05n=22.25
0.10(0)+0.05(445)=22.25
22.25=22.25
Yes, The point satisfy the condition.
B. (0.50,435)
0.10d+0.05n=22.25
0.10(0.50)+0.05(435)=22.25
21.08≠22.25
No, The point does not satisfy the condition.
C. (233,21)
0.10d+0.05n=22.25
0.10(233)+0.05(21)=22.25
24.35≠22.25
No, The point does not satisfy the condition.
D.(118,209)
0.10d+0.05n=22.25
0.10(118)+0.05(209)=22.25
22.25=22.25
Yes, The point satisfy the condition.
E.(172,101)
0.10d+0.05n=22.25
0.10(172)+0.05(101)=22.25
22.25=22.25
Yes, The point satisfy the condition.
Therefore, The values (d,n) that will be the solution of the equation are
A. (0,445)
D.(118,209)
E.(172,101)
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1. What number is 1.23 x 10^6 without scientific notation?
The number 1.23 x 10⁶ without scientific notation is 12,30,000.
Scientific Notations:Scientific notation is a way to display extremely big or extremely small numbers in a more understandable way. We are aware that full numbers can go on forever, but we are unable to write such enormous figures on paper.
We use positive exponents for base 10 when expressing any huge integers in scientific notation. For example:
500000 = 5 x 10⁵, where 5 is the positive exponent.
We use negative exponents for base 10 when expressing any small integers in scientific notation. For example:
0.00005 = 2 x 10⁻⁵, where -5 is the negative exponent.
Here we have
The number 1.23 x 10⁶
We need to write the given number without scientific notation
In the given number the exponent of 10 = 6 and positive
Then we need to move the decimal place 7 places to the right or multiply the given decimal number with 1000000
Therefore,
1.23 x 10⁶ = 1.23 × 1000000 = 12,30,000.
Hence,
The number 1.23 x 10⁶ without scientific notation is 12,30,000.
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Without using a calculator, choose the statement that best describes the value of
Answer:
B
Step-by-step explanation:
Alright, to start off... we need to find a range of value that sqr 74 is between.
To do that, we can check by just trying some random numbers.
Let's try 8 -- 8^2 is 64. Let's try 9 -- 9^2 is 81. So the sqr 64 is 8 and sqr 81 is 9.
sqr 74 is between sqr 64 and sqr 81, so the statement is true. However, the multiple-choice has decimal numbers, meaning that they want us to be more specific.
First, we can cross out 9.5, because we don't want to expand our range, we want to keep it as accurate as possible.
That leaves us 8.5
To find if 8.5 fits the criteria, meaning that it can't be larger than sqr 74, we can use two methods.
The first method is preferred, you simply need to multiply them. I hope you know how to do that by hand. We get 72.25
The second method is less preferred but works. We need to approximate the value by finding the mean of 64 and 81, because 8.5 is the mean of 8 and 9. The approximate value should be very close to the true value. By doing (81+64)/2, we get 72.5
Now, double-check: is the 74 between 72.25 and 81? Yes, it is!
Hence, that gives us the answer that sqr74 is between 8.5 (sqr 72.25) and 9 (sqr 81)
Create an equivalent expression for (1.3 3/1.2 4)-6
1.2²4/1.3 18
1.2²/ 1.3 3
1.3 18/ 1.2 24
1.3 3 / 1.2²
The equivalent expression of [(1.3^3)/(1.2^4)]^-6 is (1.2^[24])/(1.3^[18]). So option(1) is correct.
Equivalent expressions are expressions that work the same way despite their appearance. When we plug in the same value(s) for the variable, two algebraic expressions have the same value (s).
Equivalent means that different terms and expressions with similar values are considered equal in mathematical form.
The given expression is
[(1.3^3)/(1.2^4)]^-6
Apply the indices power law to the above expression.
[(1.2^4)/(1.3^3)]^6
The exponents are then expanded using the power law of indices.
(1.2^[4x6])/(1.3^[3x6])
(1.2^[24])/(1.3^[18])
Hence, the equivalent expression of [(1.3^3)/(1.2^4)]^-6 is (1.2^[24])/(1.3^[18])
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Of 350 solitaire games that Jay played, he won 154 times. What percent of the games did Jay win?
Please help
The percentage of games which Jay won is 44 percent.
What is Percentage?This is referred to as a number or ratio expressed as a fraction of 100 and is usually denoted as %.
Percentage is calculated by : parts/whole × 100.
In this scenario we can deduce that the part is 154 while the whole is 350. Therefore: 154/350 × 100 = 44 percent.
Hence the most appropriate choice is 44 percent.
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Statement Let V be any vector space and let x, y, z be in V. Prove that if x + z = y + z, then x = y. Proof Suppose for full generality that V is any vector space and x, y, z are any vectors in V. Suppose x+z= y + z. Show that x = y. Since z is in V, there exists a vector —z in V such that z+(-2) = 0 because implies Thus, x +z = y + z (x + 2) + (-2) = (y + 2) + (-2) and thus x+(2+(-2)) = y + (z + (-2)) because X+0 = y + 0 because and thus X = y by properties of the zero vector. Therefore, x +z = y + z implies x = y, and V has the cancellation property
By the zero vector property x=y.
Suppose for full generality that V is any vector space and x,y,z is any vector in V. Suppose, x+z = y+z. Show that x=y. Since z is in v, there exists a vector z in v, such that
= z + (-z) = 0, because x+y=y+z
Thus x+z=y+z
= (x+z)+(-z) = (y+z)+(-z) and thus
= x+(z+(-z)) = y + (z+(-z)) because addition is associative in vector
= x+0 = y+0 because additive inverse exists in a vector
= and thus x=y by the properties of zero vector
Also according to the question, it is now proved that x+z=y+z implies x=y and v has the cancellation property.
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Help me with this problem 16 point s
The difference is 4[tex]x^{2}[/tex] - 14x - 4
Given,
In the question:
To find the difference:
The difference of [tex]2x^2-9x+8[/tex] subtract from [tex]6x^2 -5x-12[/tex] .
Now, According to the question:
Based on the given condition:
Formulate:
[tex]6x^2 -5x-12[/tex] - [tex]2x^2-9x+8[/tex]
Simplify and expand:
[tex]6x^2 -5x-12[/tex] - [tex]2x^2-9x+8[/tex]
Reorder and gather like terms:
[tex](6x^2-2x^2)[/tex] + (-5x - 9x) + (-12 + 8)
Collect coefficient of like terms
(6 - 2)[tex]x^{2}[/tex] + (-5 -9)x + (-12 + 8)
Calculate the sum or difference:
4[tex]x^{2}[/tex] - 14x - 4
Hence, The difference is 4[tex]x^{2}[/tex] - 14x - 4 .
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i will mark brainliest pls help it was due last week
Answer:
[tex]y=\frac{1}{2}x-5[/tex]
B: smaller rate of change but night y intercept
Step-by-step explanation:
y intercept is -5 because when x is zero y is -5
Now to find slope
-1-(-3)/8-4
-1+3/4
2/4
1/2
Now we can put it in an equation
y=1/2x-5
2nd question
-6-4/0-2
-10/-2
5
-6 is greater then -10 so the y intercept is bigger
So B is correct
Answer: i'm writeing this so you can mark the other person brainliest
Step-by-step explanation:
A woman who is 64 inches tall has a shoulder width of 16 inches.
Write an equation relating the height h to the width w. Find the height
of a woman who has a shoulder width of 18.5 inches. I know we have to multiply 18.5x4 but why?
The height of woman who has a shoulder width of 18.5 inches is 74 inches.
What is Proportion?In general, the term "proportion" refers to a part, share, or amount that is compared to a total.
According to the concept of proportion, two ratios are in proportion when they are equal.
A mathematical comparison of two numbers is called a proportion. According to proportion, two sets of provided numbers are said to be directly proportional to one another if they increase or decrease in the same ratio. "::" or "=" are symbols used to indicate proportions.
Given:
Height of woman = 64 inches
Shoulder width = 16 inches
So, ratio = Height : shoulder width = 64:16
let the height of a woman who has a shoulder width of 18.5 inches be x.
So, x:18.5.
Now,
64 / 16 = x/ 18.5
4= x/18.5
x= 74
Hence, the height of woman who has a shoulder width of 18.5 inches is 74 inches.
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Find the unit vector in the direction of < 5, −7 >
The vector <5√74 / 74, - 7√74 / 74> is the unit vector in the direction of <5, - 7>.
How to determine the unit vector in the direction of a given vector
Vectors are described by two features: (i) magnitude, (ii) direction. The magnitude is the quantity associated with a vector and determine by Pythagorean theorem, and the direction indicates the "distribution" of the magnitude along the ortogonal axes of the vector. Unit vectors are vectors of magnitude 1 and we can determine it by using the following definition:
[tex]\vec u[/tex] = <x, y> / ||<x, y>||
Where ||<x, y>|| = √(x² + y²)
Please notice that [tex]\vec u[/tex] represents the unit vector.
If we know that <x, y> = <5, - 7>, then the unit vector is:
Magnitude
||<x, y>|| = √[5² + (- 7)²]
||<x, y>|| = √74
Unit vector
[tex]\vec u[/tex] = <5, - 7> / √74
[tex]\vec u[/tex] = <5 / √74, - 7 / √74>
[tex]\vec u[/tex] = <5√74 / 74, - 7√74 / 74>
<5√74 / 74, - 7√74 / 74> is the unit vector in the direction of <5, - 7>.
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Add the fractions. **Remember to have a common denominator.**
1/4 + 1/3
Answer:
[tex] \sf \: \frac{7}{12} [/tex]
Step-by-step explanation:
Given problem,
[tex] \sf \rightarrow \: \frac{1}{4} + \frac{1}{3} [/tex]
Let's solve the problem,
[tex] \sf \rightarrow \: \frac{1}{4} + \frac{1}{3} [/tex]
[tex] \sf \rightarrow \: \frac{(1) \times 3}{(4) \times 3} + \frac{(1) \times 4}{(3) \times 4} [/tex]
[tex] \sf \rightarrow \: \frac{3}{12} + \frac{4}{12} [/tex]
[tex] \sf \rightarrow \: \frac{(3 + 4)}{12} [/tex]
[tex] \sf \rightarrow \: \frac{7}{12} [/tex]
Hence, the answer is 7/12.
−4 1/5x=1.44
Enter your answer as a mixed number in simplest form in the box.
x =
The value of x in the given equation is x = -12/35
Determining the value of x in an equationFrom the question, we are to solve the given linear equation.
The given linear equation is
-4 1/5x = 1.44
To solve the given equation, we will determine the value of x in the equation.
First, we will convert 4 1/5 to an improper fraction
-4 1/5 = -21/5
Also,
We will convert 1.44 to a fraction
1.44 = 144/100 = 36/25
Now,
-21/5(x) = 36/25
-21(x) × 25 = 36 × 5
x = (36 × 5) / (-21 × 25)
x = -180/525
x = -12/35
Hence, the value of x is x = -12/35
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For what values of x and y are the triangles congruent by HL?
Answer:
Step-by-step explanation:
4x maybe
least common
Denominator of 7/2 &
3/10
Answer: 10
Step-by-step explanation: The least common denominator is 10 because both integers 2 and 10 have a LCM OF 10. Your welcome. :’j
Answer: 10
Step-by-step explanation: The least common denominator is 10, cuz it is the lowest common multiple of 10 and 2, 2 × 5 =10, 10× 1 = 10. they r both common multiples.
Sharon spent #13.60 on baseball Cards. She bought 16 packs How much did each pack cost?
Answer:
#0.85
Step by step:
13.60/16 = #0.85
pls give me brainliest
pls:(
Solve
n=5(m^2+D)
(It's a literal equation)
Step-by-step explanation:
are you sure there is no other given info? do you have to solve in terms of m and D?
Rewrite the following equation in slope-intercept form.
y + 6 = 9(x − 8)
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Answer:
y = 9x -78
Step-by-step explanation:
You want the equation y + 6 = 9(x − 8) written in slope-intercept form.
SolutionSolve for y and simplify.
y +6 = 9x -72 . . . . . . . . eliminate parentheses
y = 9x -78 . . . . . . . . . subtract 6
__
Additional comment
The given equation is written in point-slope form. It has a slope of 9 and goes through the point (8, -6).
Slope-intercept form is ...
y = mx +b
where m is the slope and b is the y-intercept.
In the first week of July, a record 1,040 people went to the local swimming pool. In the second week, 110 fewer people went to the pool than in the first week. In the third week, 130 more people went to the pool than in the second week. In the fourth week, 332 fewer people went to the pool than in the third week. What is the percent decrease in the number of people who went to the pool over these four weeks?
Answer:
ok
Step-by-step explanation:
Using the completing-the-square method, find the vertex of the function f(x)=-2x^2+12x+5 and indicate whether it is a minimum or a maximum and at what point.
Using the completing-the-square method, find the vertex of the function f(x)=-2x^2+12x+5 and indicate whether it is a minimum or a maximum and at what point.
Given function is: [tex]f(x) = -2x^{2}+12x+5[/tex]
[tex]f(x) = a(x-h)^{2} +k[/tex] , where (h,k) is the vertex
Apply completing the square method to find vertex
[tex]f(x) = -2x^{2}+12x+5\\\\f(x) = -2(x^{2}-6x)+5[/tex]
Lets take half of coefficient of x is -6
divide by 2 that is -3
square it [tex](-3)^{2}[/tex] that is 9
Add and subtract 9
[tex]f(x) = -2(x^{2}-6x+9-9)+5[/tex]
Take out -9 and multiply by -2
[tex]f(x) = -2(x^{2}-6x+9)+18+5\\\\f(x) = -2(x^{2}-6x+9)+23[/tex]
Now factor the parenthesis part
[tex]f(x) = -2(x-3)^{2} +23[/tex]
The value of h=3 and k=23
So vertex is (3,23)
The value of 'a' is -2, it means the parabola is upside down. so vertex is maximum
Hence the answer is the vertex is maximum at (3,23)
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f(x)=-x^2-7x please answer
Answer:
[tex]f( x) = x2 - 7 x[/tex]
A container releases fuel at a rate of 5 gallons per second. If y represents the amount of fuel remaining in the container and x represents the number of seconds that have passed since the fuel started dispensing, then x and y satisfy a linear relationship. If the tank begins with 103 gallons, how many gallons will remain after 2 seconds?
By evaluating a linear equation, we will see that after two seconds there are 93 gallons of fuel.
How many gallons will remain after two seconds?We know that the tank initially has 103 galons of fuel, and we know that it releases 5 gallons per second at a constant rate.
So, after x seconds, the amount of fuel inside the container is:
F(x) = 103 - x*5
so we have a linear equation.
The amount of fuel in the tank after 2 seconds is given by:
F(2)= 103 - 2*5 = 103 - 10 = 93
After 2 seconds there are 93 gallons of fuel.
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Which is an equation of the line that passes through the points (0, 0) and (1,
4)?
y = x + 1
y = 4x + 1
y = x
y = 4x
slope = m = (4 - 0) / (1 - 0) = 4
y = mx + b
y = 4x + b
substitute (0, 0) to find b
b = 0
y = 4x
Find the rectangular coordinates of the point whose spherical coordinates are given. (a) (1,0,0) (x, y, z) =( (b) (18, 1/3, 1/4) (X, Y, z)
The rectangular coordinates are
a. (1,0,0) ⇒ (x,y,z) = (0,0,1)
b. (18,1/3,1/4) ⇒ (x,y,z) = (11.022,11.022,9)
Let us take ( x, y, z ) as cartesian or rectangular coordinates and ( r, Θ, ∅ ) are the spherical coordinates, then
x = r.sinΘ.cos∅ → 1
y = r.sinΘ.sin∅ → 2
z = r.cosΘ → 3
According to the given problem,
a.) ( 1, 0, 0 ) = ( r, Θ, ∅ )
Substitute the values r = 1, Θ = 0 and ∅ = 0 in 1, 2, 3.
1 ⇒ x = r.sinΘ.cos∅
= 1.sin0.cos0
= 1.0.1
x = 0
2 ⇒ y = r.sinΘ.sin∅
= 1.sin0.sin0
= 1.0.0
y = 0
3 ⇒ z = r.cosΘ
= 1.cos0
= 1.1
z = 1
∴ ( x, y, z ) = ( 0, 0, 1 )
b.) ( 18, π/3, π/4 ) = ( r, Θ, ∅ )
Substitute the values r = 18, Θ = π/3 and ∅ = π/4 in 1, 2, 3.
1 ⇒ x = r.sinΘ.cos∅
= 18.sinπ/3.cosπ/4
= 18.√3/2.1/√2
x = 11.022
2 ⇒ y = r.sinΘ.sin∅
= 18.sinπ/3.sinπ/4
= 18.√3/2.1/√2
y = 11.022
3 ⇒ z = r.cosΘ
= 18.cosπ/3
= 18.1/2
z = 9
∴ ( x, y, z ) = ( 11.022, 11.022, 9 )
Therefore the rectangular coordinates for the spherical coordinates of
a. ( 1, 0, 0 ) is ( 0, 0, 1 )
b. ( 18, 1/3, 1/4 ) is ( 11.022, 11.022, 9 )
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Find the value of X
(Triangle Congruence)
Answer:
x = 139°
Step-by-step explanation:
The sum of the internal angles of a triangles is 180°
a + 59 + 80 = 180
a = 180 - 139
a = 41°
a and x are supplementary angles. Supplementary angles sum 180°.
Then:
a + x = 180
41 + x = 180
x = 180 - 41
x = 139°