Answer:
37
Step-by-step explanation:
WX = a
XY = a-9
WY = WX + XY = 65
So we substitute values:
WY = a + a -9 OR 2a - 9
65 = 2a -9
Then we collect like terms:
2a = 65 + 9
2a = 74 (divide both sides by 2 to get a)
a = 37
En el cine, el precio de admisión de un niño es de 6 dólares y de un adulto es de 9,20 dólares . El sábado se vendieron 146 boletos de admisión para un total de ventas de 1135,20 dólares . ¿Cuántos boletos de admisión de niños se vendieron ese día?
Answer:
65 boletos.
Step-by-step explanation:
Antes de resolverSabemos que el precio para un niño es 6 dólares, y el precio para un adulto es 9,20 dólares. Además, el cine se vendió 146 boletos, y recibió 1135,20 dólares.
El procesoVamos a resolver este problema con un sistema, usando 2 varibles.
No sabemos cuantos boletos de niño el cine vendió, entonces el cine vendió <<x>> boletos de niños. Tampoco sabemos cuantos boletos de adultos vendió, entonces vendió <<y>> boletos de adultos.
En total, vendió 146 boletos; el número de los boletos de niños con el número de los boletos de adultos es 146 boletos.
Usando las variables, x + y = 146 boletos.
Esta es una de las equaciones que necesitamos.
Porque todos los boletos de niños es 6 dólares, si el cine vendió <<x>> boletos, su total de ventas (de boletos de niños) es <<6x>> dólares.
Lo mismo es verdad para los boletos de adultos; todos los boletos de adultos es 9,20 dólares, entonces si vendió <<y>> boletos, el total de ventas de boletos de adultos es <<9,20y>> dólares.
En total, las ventas de los boletos de niños + las ventas de los boletos de adultos es 1135,20 dólares.
O, con variables, es 6x + 9,20y = 1135,20
Nuestra sistema es:
x + y = 146
6x + 9,20y = 1135,20
Ahora necesitamos resolver esta sistema.
Podemos usar la sustitución. Vamos a resolver una de las eqaciones para una variable, y después, usar el valor de esa variable para encontrar la solución para una de las variables, y después, usar esa solución para encontrar la solución de la otra variable.
Podemos mover <<y>> al otro lado.
x + y = 146 => x = 146 - y
Ahora, podemos sustituir <<x>> para 146 - y en 6x + 9,20y = 1135,20
6(146-y) + 9,20y = 1135,20
Multiplica.
876 - 6y + 9,20y = 1135,20
Combina los términos que son los mismos.
876 + 3,20y = 1135,20
Mueva 876 al otro lado.
876 + 3,20y = 1135,20 => 3,20y = 259,20
Divide todo por 3,20.
3,20y/ 3,20 = 259,20/ 3,20
y = 81
Entonces, el cine vendió 81 boletos de adultos.
La respuestaRecuerda, esta (81 boletos de adultos) no es lo que necesitamos. Necesitamos cuantos boletos de niños vendió.
Entonces, podemos substituir <<y>> con 81 en x = 146 - y. Recuerda que <<x>> es cuantos boletos de niños vendió.
x = 146 - y => x = 146 - 81 => 65
Entonces, el cine vendió 65 boletos de niños.
find the inverse of the function y=8x-7
1) To find out the inverse function, assuming this function admits one, let's proceed with these steps:
y=8x -7 Swap x for y
x = 8y -7 Let's isolate y on the left side subtracting 8y from both sides
x -8y = -7 Add -x to both sides
-8y = -7 -x Divide both sides by -8
y =7/8 +x/8 Write the proper notation
\(f^{-1}(x)\text{ =}\frac{x}{8}+\frac{7}{8}\)
2) And that's the answer
In 1996 a town had 170 cell phone users. This number
increased by 75% each year. Which function could be used
to find the number of phone users t years after 1996?
Answer:
Step-by-step explanation:
The function to find the number of phone users t years after 1996 is y= \(170(1.75)^t\).
What is the function?Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.
Given that, in 1996 a town had 170 cell phone users. This number increased by 75% each year.
Let the number of phone users t years after 1996 be y
The number of phone users t years after 1996 is
y= \(170(1+\frac{75}{100})^t\)
y= \(170(1.75)^t\)
Therefore, the function to find the number of phone users t years after 1996 is y= \(170(1.75)^t\).
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An employee makes $10.51 per hour but is getting a 3% increase. What is his new wage per hour to the nearest cent? What percentage of the original wage is his new wage?
The employee's new wage per hour is $10.83. The percentage increase of the original wage to his new wage is 3%.
What is a percentage increase?A percent increase means how much a percentage has gone up over time. To find this number, one would need to find the difference between the original value and the final value, subtracting to find the exact total of the decrease. The formula for percent increase equals to "Increase / original number (value) x 100".
Given data:
First, we find 3% of $10.51 to get new wage per hour
= 0.03$ * $10.51
= $0.32
Then, we add this increase to $10.51.
= $10.51 + $0.32
= $10.83
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What are the x-coordinates to the solutions of the system of equations:
x + y + 10 = 0
x ^ 2 + y - 2 = 0
A) x = - 4, -3
B) x= 4, 14
C) x= -3, 4
D) x= -3, -7
Answer:
C
Step-by-step explanation:
x + y + 10 = 0 ( subtract x + 10 from both sides )
y = - x - 10 → (1)
x² + y - 2 = 0 → (2)
substitute y = - x - 10 into (2)
x² - x - 10 - 2 = 0
x² - x - 12 = 0 ← in standard form
(x - 4)(x + 3) = 0 ← in factored form
equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x - 4 = 0 ⇒ x = 4
The perimeter of a regular heptagon is 21m. How long is each side?
5 m.
2 m.
3 m.
4 m.
PLS ANSWER!
I will give Brainlist to whoever answers first.
Answer:
The perimeter of a regular heptagon is 21m. Each side is 3 m long.
Step-by-step explanation:
in the given heptagon,
perimeter(p)=21m
length(l)=?
We know that,
HEPTAGON HAS 7 SIDE
So that,
length=21/7
=3m#
Which has a greater effect on the volume-changing the radius by a given amount or changing the height by the same amount? Why?
Answer: Changing the radius of an object by a given amount has a greater effect on the volume than changing the height by the same amount. The volume of a cylinder is given by the formula V = πr²h, where V is the volume, r is the radius, and h is the height. If we change the radius by a given amount, say x, the new radius would be r+x. Hence, the new volume would be V' = π(r+x)²h = π(r²+2rx+x²)h = V + 2πrxh + πx²h. We can see that the volume change equals 2πrxh + πx²h. The first term is proportional to both the radius and the height, whereas the second term is proportional to the square of the radius and the height. Assuming that the height change is also x, the new volume would be V'' = πr²(h+x) = V + πr²x. We can see that the volume change is proportional to the radius squared and the change in height. Therefore, changing the radius by a given amount has a greater effect on the volume than changing the height by the same amount.
If mZA = (4x - 2)° and mZB= (6x-20), what is the value of x?
To find the value of x, we can set the two angle measures equal to each other and solve for x.
Given:
mZA = (4x - 2)°
mZB = (6x - 20)°
Setting them equal to each other:
4x - 2 = 6x - 20
Now, we can solve for x:
4x - 6x = -20 + 2
-2x = -18
Dividing both sides by -2:
x = -18 / -2
x = 9
Therefore, the value of x is 9.
Answer:
The answer is 9.
Step-by-step explanation:
We need to use the fact that the sum of the angles in a triangle is 180 degrees. Let A, B, and C be the three angles in the triangle. Then we have:
mZA + mZB + mZC = 180°
Substituting the given values, we get:
(4x - 2)° + (6x - 20)° + mZC = 180°
Simplifying the left side, we get:
10x - 22 + mZC = 180°
Next, we use the fact that angles opposite congruent sides of a triangle are congruent. Since we know that segment AC and segment BC are congruent, we have:
mZA = mZB
Substituting the given values and simplifying, we get
4x - 2 = 6x - 20
Solving for x, we get:
x = 9
Therefore, the value of x is 9.
Jon and Jim are at opposite sides of campus and begin walking toward each other. Jon walks at 4 feet per second while Jim walks at 5 feet per second . If the campus is 2,700 feet long, then how long will it take (in seconds) for them to meet?
Answer:
I believe the answer would be 300 seconds.
11, 20, 29, ...
Find the 48th term.
Answer:
434
Step-by-step explanation:
29-20=9
20-11=9
9*47=423
423+11=434
y = -5/3x +3 and Y = 1/3x -3
Answer:
(X , Y) = (3 , -2)
Step-by-step explanation:
Assuming this is solved via the comparison method ...
-5/3x+3 = 1/3x-3 which gets you x = 3
Now, substitute the given value of x into the equation, y=1/3x-3(-3)
Solve for Y, Y=-2
The possible solution of the system is the ordered pair (X , Y)
(3 , -2)
What is the definition of perpendicular lines?
1.two lines that intersect in a way that forms right angles
2.two lines that intersect in a way that cuts both lines in half
3.two lines that intersect in a way that they share more than one common point
4.two lines that intersect in a way that forms two congruent angles
Answer:
Step-by-step explanation:
The correct definition of perpendicular lines is option 1: "Two lines that intersect in a way that forms right angles."
When two lines intersect to form four right angles (90-degree angles), they are said to be perpendicular to each other. The point at which the lines intersect is called the point of intersection.
Therefore, option 1 is the correct definitation of perpendicular lines.
Answer: 1. Two lines that intersect in a way that forms right angles.
Step-by-step explanation:
Hope this helped! :)
Which of the relations given by the following sets of ordered pairs is a function?
O {(2,-8), (1, — 4), (0, 0), (1, 4), (2, 8)}
O {(3, -3), (3, -1), (3, 1), (3, 3), (3,5)}
O {(1, 2), (2, 3), (3, 4), (5, 6), (2, 1)}
O {(-2,5), (7,5), (-4, 0), (3, 0), (1, -6)}
Answer:
Option (4)
Step-by-step explanation:
Each value of x maps onto only one value of y, so it is a function.
What is the maximum of f(x)=sin(x)
Answer:
1
Step-by-step explanation:
The maximum of f(x) = sin(x) is 1. The sine function has a range of -1 ≤ sin(x) ≤ 1. The sine function oscillates between -1 and 1, reaching a maximum of 1 when x = π/2 and a minimum of -1 when x = -π/2. If you look at a graph of
y = sin(x) you can see this.
Answer: The Maximum Value of f(x)=sin(x) is 1 , when x=90°.
Step-by-step explanation:
Property of Sine function:
Sin(x)=0 when x=90°,180°,360°The maximum and Minimum value of Sin(x) is 1 and -1 respectively, when and x=270° respectively.The range of values of sin(x) is -1 to 1.Read more on the Sine function:
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Sum of the second and third consecutive odd integers, simplified
fv=100000, pmt=4000, i/y=5%, n=10, what is pv?
The Present value is $6,139.132.
We have,
FV=100000, pmt = 4000, I =5%, n=10
So, The present value formula is
PV=FV / (1 + \(i)^n\)
So, PV = 100, 000 / (1+ 5/100\()^{10\\\)
PV = 100,000 / (1+ 0.05\()^{10\\\)
PV = 100, 000/ (1.05\()^{10\\\)
PV = 100,000 / 1.6288946
PV= $6,139.132
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Use the distributive property to simplify the expression:
3(2p+5)-10
PLEASE HELP ASAP I'LL GIVE 100 POINTS AND BRAINY IF YOU CAN HELP ME!!!!!!!!!!!!
Answer:
6p+5
Step-by-step explanation:
3(2p+5)−10
Use the distributive property to multiply 3 by 2p+5.
6p+15−10
Subtract 10 from 15 to get 5.
6p+5
Can anybody please help me out with this question I would really appreciate it so much . Please and thank you .
Answer:
x=3 MT=36 MH=18
Step-by-step explanation:
The two triangles are the same, so 7x+8=10x-1
3x=9
x=3
MT=12x3=36
MH=36/2=18
please help me solve this.
List all the subsets of the given set.
{e, n, t}
The subsets of the set {e, n, t} are given as follows:
{{}, {e}, {n}, {t}, {e,n}, {e,t}, {n,t}, {e,n,t}}.
How to obtain the number of subsets in a set?Considering a set with n elements, the number of subsets in the set is the nth power of 2, that is:
\(2^n\)
The set for this problem is given as follows:
{e, n, t}
The cardinality is given as follows:
n = 3.
Hence the number of subsets is given as follows:
2³ = 8.
The subsets are given as follows:
{{}, {e}, {n}, {t}, {e,n}, {e,t}, {n,t}, {e,n,t}}.
In which {} is the empty set.
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The histogram below shows the average number of days per year in 117 Oklahoma cities where the high temperature was greater than 90 degrees Fahrenheit. Which is an accurate comparison? The mean is likely greater than the median because the data is skewed to the right.
The accurate comparison shown by Histogram is that the mean is likely greater than the median because the data is skewed to the right. So, the correct option is A).
The histogram shows a right-skewed distribution, with a tail extending to the right of the peak. This indicates that there are a few cities with very high values that are pulling the mean to the right. In a right-skewed distribution, the mean is always greater than the median. This is because the mean is sensitive to extreme values and the median is not.
Therefore, option A is the accurate comparison. Option B is incorrect because the data is not skewed to the left. Option C is incorrect because the median is always less than the mean in a right-skewed distribution. Option D is also incorrect because the median is always less than the mean in a left-skewed distribution. The correct answer is A).
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_____The given question is incomplete, the complete question is given below:
3 4 5 8 9 10
The histogram below shows the average number of days per year in 117 Oklahoma cities where the high temperature was greater than 90 degrees Fahrenheit.
Which is an accurate comparison?
A The mean is likely greater than the median because the data is skewed to the right.
B The mean is likely greater than the median because the data is skewed to the left.
C The median is likely greater than the mean because the data is skewed to the right.
D The median is likely greater than the mean because the data is skewed to the left.
Find the circumference of a quarter of the circle (radius = 6)
Answer:
rajjsjdjdjxkkdkdkdkkdjxjjdjxjckfkjdjfuidid
A line passes through the point (-2,6) and has a slope of 5/2 write an equation in slope-intercept form for this line
Answer:
y=5/2x+11
Step-by-step explanation:
write part of equation and apply
6=5/2(-2)+n
n=11
y=5/2x+11
Find the area of the triangle.
3).
Answer:
86.60254
Step-by-step explanation:
30-60-90 triangle, which means that the base is 10. 1/2(10)(10 rt 3). Simplify answer as needed :)
Graph the function rule
Y= -3/4 x-1
The following are ages of 17 of the signers of the Declaration of Independence.
49, 34, 42, 43, 39, 36, 50, 44, 45, 33, 34, 27, 33, 69, 46, 50, 41
Send data to calculator
Find 25th and 80th percentiles for these ages.
(If necessary, consult a list of formulas.)
(a) The 25th percentile:
The 80th
percentile:
Answer:
Step-by-step explanation:
The problem specifies that you may use a calculator. The formula, as reference, is:
You can use a regular calculator or an online spreadsheet to solve. In sheets, arrange your data and use the =PERCENTILE( ) function. In the parentheses, write the range of your data and the requested percentile as a decimal. So if I type the data (the ages of the signers for this example) in cells A:4 through A:23, I'd write =percentile(A7:A23,0.25).
So the answers:
25th percentile is 34.
80th percentile is 48.4.
The length of a feild is 20 yards. mr matsumoto planted a row of peas evry 3/4 yards
Answer:
26 rows of peas
Step-by-step explanation:
To find out how many rows of peas can be planted, divide 20 by 3/4. The answer is 26 2/3, but you can't plant 2/3 of a row, so the answer is 26.
Sorry if the answer is NOT 26, if it is not, try 26 2/3. Have a good day!
50 points. use rotation tool in top right to flip upright.
Answer:
(a) 56%
(b) 28%
Step-by-step explanation:
Hope this helps! :)
Express the null hypothesis and the alternative hypothesis in symbolic form. The owner of a football team claims that the average attendance at games is over 68,800, and he is therefore justified in moving the team to a city with a larger stadium. H0: μ > 68,800 H1: μ ≤ 68,800 H0: μ = 68,800 H1: μ < 68,800 H0: μ < 68,800 H1: μ ≥ 68,800 H0: μ ≤ 68,800 H1: μ > 68,800
Answer:
H0: μ ≤ 68,800
H1: μ > 68,800
Step-by-step explanation:
The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (H1) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.
For the case above;
The Null hypothesis is that the average attendance at games is less than or equal to 68,800.
H0: μ ≤ 68,800
The alternative hypothesis is that the average attendance at games is over 68,800.
H1: μ > 68,800
H₀: μ ≤ 68,800 H₁: μ > 68,800. Then the correct option is D.
What are null hypotheses and alternative hypotheses?In null hypotheses, there is no relationship between the two phenomenons under the assumption, or it is not associated with the group. And in alternative hypotheses, there is a relationship between the two chosen unknowns.
The Null hypothesis is that the average attendance at games is less than or equal to 68,800.
H₀: μ ≤ 68,800
The alternative hypothesis is that the average attendance at games is over 68,800.
H₁: μ > 68,800
Then the correct option is D.
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find the slope of the line that passes through the given cordanits-1,6 and 4,3 whats the answer
We are going to say that (-1, 6) is the first point:
(x₁, y₁) = (-1, 6)
and that (4, 3) is the second:
(x₂, y₂) = (4, 3)
We want to find the change of each coordinate:
Δy = y₂ - y₁ = 3 - 6 = -3
Δx = x₂ - x₁ = 4 - (-1) = 4 + 1 = 5
Then Δy = - 3 and Δx = 5
We know that the slope, m, is given by:
Δy/Δx = -3/5
Answer: the slope of that line is -3/5