at a local music store, CDs cost $11.99 including tax. Is the number of CDs purchased proportional to the cost of the CDs?
Answers
Yes, the number of CDs purchased is proportional to the cost of the CDs
HOW PROPORTIONAL IS IT?
matching in terms of size, degree, or intensity
The corresponding sides of identical triangles are proportionate if their ratios are the same or constant.What does the word "dollar" mean?
A unit of currency or money is a dollar. The dollar is the unit of currency in the US, Canada, and Australia. Dollars are denoted by the symbol $. You can tell someone is greedy if you say they worship the all-powerful dollar. One dollar is equal to one hundred cents.
GIVEN
1 CDs =11.99 dollars.
2 CDs =23.98 dollars = 23.98÷2 =11.99
3 CDs =35.97 dollars. = 35.97 ÷3 =11.99
4 CDs =47.96 dollars = 47.96÷4 =11.99
Yes, the number of CDs purchased is proportional to the cost of the CDs
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Related Questions
I need to find the answer to S
Answers
Answer:
65º
Step-by-step explanation:
(the sum of the angles of a triangle) 180- 65= 115
65= 30+ 35
180- 115=65
Answer:
I'm pretty sure the answer is 65
Step-by-step explanation:
30+35=65
180-65=115
So the 3rd angle in the triangle is 115°
Then you subtract 115 from 180 and get 65°
So S equals 65°
Finding missing angles
180°
35°
X
Answers
Answer:
90 degree and 55 degree
plz mark me as brainliest
Which function has a greater maximum?
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f(x)=−2(x+4)
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+1f, left parenthesis, x, right parenthesis, equals, minus, 2, left parenthesis, x, plus, 4, right parenthesis, squared, plus, 1
A coordinate plane. The x- and y-axes both scale by one. The graph is the function y equals g of x which is a parabola that opens down. The function increases through negative four, negative five and negative three, negative two. It has a maximum at negative two, one, then the function decreases through negative one, negative two and zero, negative five.
Answers
The function f(x) = \(-2(x+4)^2\) + 1 has a greater maximum.
1. The given function is f(x) = \(-2(x+4)^2\) + 1.
2. To find the maximum of the function, we need to determine the vertex of the parabola.
3. The vertex form of a quadratic function is given by f(x) = \(a(x-h)^2\) + k, where (h, k) represents the vertex.
4. Comparing the given function to the vertex form, we see that a = -2, h = -4, and k = 1.
5. The x-coordinate of the vertex is given by h = -4.
6. To find the y-coordinate of the vertex, substitute the x-coordinate into the function: f(-4) = \(-2(-4+4)^2\) + 1 = \(-2(0)^2\) + 1 = 1.
7. Therefore, the vertex of the function is (-4, 1), which represents the maximum point.
8. Comparing this maximum point to the information provided about the other function g(x) on the coordinate plane, we can conclude that the maximum of f(x) = \(-2(x+4)^2\) + 1 is greater than the maximum of g(x).
9. The given information about g(x) is not sufficient to determine its maximum value or specific equation, so a direct comparison is not possible.
10. Hence, the function f(x) =\(-2(x+4)^2\) + 1 has a greater maximum.
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Please help with this math question!
Answers
Answer:
5. Proofs attached to answer
Step-by-step explanation:
Proofs attached to answer
Is 6 inches in 10 seconds proportional to 12 inches in 60 seconds?
Answers
Answer: No
Step-by-step explanation:
to be proportional, both numbers have to increase by the same number
because if u multiply 6 by 2 you get 12, but when you multiply 10 by 2 you get 20, not 60 it would be proportional if you said 6 and 10 in to 12 and 20 in
Use a calculator to solve the following equation for θ on the interval (−π/2,π/2).
tan(θ)=3.804
Round to three decimal places.
θ=? Radians
Answers
the solution for \(\theta\) on the interval \((-\pi/2,\pi/2)\) is approximately \(1.305\)radians.
What is interval?An interval is a set of real numbers that includes all the numbers between two endpoints. The endpoints can be included or excluded from the interval, depending on whether square brackets or parentheses are used to define the interval.
The equation is:
\(tan(\theta) = 3.804\)
To solve for θ, we can use the inverse tangent function (also known as arctan or tan^-1) on both sides of the equation:
\(\theta = tan^-1(3.804)\)
Using a calculator, we can evaluate this expression and get:
\(\theta \approx 1.305\) radians (rounded to three decimal places)
Therefore, the solution for \(\theta\) on the interval \((-\pi/2,\pi/2)\) is approximately \(1.305\)radians.
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Please help. The numerator is an x
Answers
Answer:
x = 30
Step-by-step explanation:
\(\frac{x}{6} +1=6\\\\\mathrm{Subtract\:}1\mathrm{\:from\:both\:sides}\\\frac{x}{6}+1-1=6-1\\\\Simplify\\\frac{x}{6}=5\\\\\mathrm{Multiply\:both\:sides\:by\:}6\\\frac{6x}{6}=5\times\:6\\\\Simplify\\x=30\)
TravelEz buys dollars at a rate of (1.8 dollars)/(1 eu ). Joseph is going on vacation and wants 400 eurosHow many dollars must he give to get 400 euros?
720 dollars
222 dollars
622 dollars
400 dollars
Answers
Answer:
a b c d e f g h I j k l m n o p t u v w x y z
Step-by-step explanation:
He must give 720 dollars to get 400 euros
How to slove these problems2 7/8 - 15/161 1/5 x 2 1/32 1/5 ./. 4
Answers
The Solution:
Given the following:
\(\begin{gathered} 2\frac{7}{8}-\frac{15}{16} \\ \\ 1\frac{1}{5}\times2\frac{1}{3} \\ \\ \frac{2\frac{1}{5}}{4} \end{gathered}\)We are asked to evaluate each of them.
Step 1:
we shall convert each fraction into an improper fraction.
\(\frac{23}{8}-\frac{15}{16}\)\(\frac{46-15}{16}=\frac{31}{16}=1\frac{15}{16}\)\(\begin{gathered} 1\frac{1}{5}\times2\frac{1}{3} \\ \\ \frac{6}{5}\times\frac{7}{3}=\frac{2\times7}{5}=\frac{14}{5}=2\frac{4}{5} \end{gathered}\)\(\frac{2\frac{1}{5}}{4}=\frac{\frac{11}{5}}{4}=\frac{11}{5}\times\frac{1}{4}=\frac{11}{20}\)G=f(x+3)+2 I needs help remembering which one is up and down and which one is left to right
Answers
If "a" is a positive number, then we can perform the following transformations:
1) A shift to the left (or to the right)
2) A shift up (or down)
1)
This transformation can be expressed as:
\(\begin{gathered} f\mleft(x\mright)\rightarrow f\mleft(x+a\mright)\text{ \lparen Shift a units to the left\rparen} \\ f\mleft(x\mright)\operatorname{\rightarrow}f\mleft(x-a\mright)\operatorname{\lparen}\text{Shift a units to the right}\operatorname{\rparen} \end{gathered}\)2)
This transformation can be expressed as:
\(\begin{gathered} f\mleft(x\mright)\rightarrow f\lparen x)+a\text{ \lparen Shift a units up\rparen} \\ f\mleft(x\mright)\operatorname{\rightarrow}f\lparen x)-a\operatorname{\lparen}\text{Shift a units down}\operatorname{\rparen} \end{gathered}\)From this, if we have:
\(G\left(x\right)=f\mleft(x+3\mright)+2\)Then, we have:
\(\begin{gathered} f\mleft(x\mright)\rightarrow f\mleft(x+3\mright)\text{ \lparen A shift 3 units to the left\rparen} \\ f\mleft(x\mright)\rightarrow f\mleft(x\mright)+2\text{ \lparen A shift 2 units up\rparen} \end{gathered}\)If we combine both transformations, we have a final graph of G(x) that is shifted 3 units to the left and 2 units up with respect to the graph of f(x)
Ryan buys lunch for $16.83. If sales tax is 8.4%, How much money does Ryan need total for lunch
Answers
\(\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{8.4\% of 16.83}}{\left( \cfrac{8.4}{100} \right)16.83} ~~ \approx ~~ 1.41~\hfill \underset{ Total~for~lunch }{\stackrel{ 16.83~~ + ~~1.41 }{\approx\text{\LARGE 18.24}}}\)
A rectangular pyramid with a height of 21 cm has a volume of 728 cm³. Calculate the length of its base if its breadth is 8 cm.
Answers
Hello !
Answer:
\(\Large \boxed{\sf length=13cm}\)
Step-by-step explanation:
The volume of a pyramid is given by \(\sf V_{pyramid}=\frac{1}{3} \times B\times h\) where B is the area of the base and h is the height.
This is a rectangular pyramid. We have where \(\sf B=l\times w\) l is the length and w is the width (breadth).
So \(\sf V_{pyramid}=\frac{1}{3} \times l\times w\times h\)
Given :
h = 21 cmw = 8 cml = x\(\sf V_{pyramid}=728cm^3\)Let's replace h, w, l, \(\sf V_{pyramid}\) with their values in the previous formula :
\(\sf 728=\frac{1}{3} \times x\times 8 \times 21\\728=56x\)
Let's solve for x !
Divide both sides by 56 :
\(\sf \frac{56x}{56} =\frac{728}{56}\\ \boxed{\sf x=13cm}\)
Have a nice day ;)
HURRY ANSWER Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive on
negative correlation, describe its meaning in the situation.
Consumer Price Index, 1950-2002
700
600+
500
400
300
200+
100
1950
1960
1970
1980
1990
2000
Year
Source: Bureau of Labor Statistics, U.S. Dept. of Labor
a. no correlation
b. positive correlation; as time passes, the CPI increases.
C.positive correlation as time passes
Answers
Answer:
B
Step-by-step explanation:
The meaning in the situation is B; positive correlation; as time passes, the CPI increases.
What does correlation coefficient convey?The correlation coefficient is the degree of association between two quantities in terms of linear relation. The range of correlation coefficient is -1 to 1
If the correlation is -1, then that refers as the one quantity increases, the other quantity decreases , also the correlation is 0, then there is no linear relationship between two variables.
There are two types of Correlation;
Positive Correlation= With Increase in x value, y value also increases, we call it positive correlation.
Negative Correlation= With Increase in x value, if y value decreases, we call it negative correlation.
As we can see from the points plotted on the graph ,with increase in x value , y value decreases.
Hence, positive correlation; as time passes, the CPI increases.
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Solve the equation. Please help
Answers
\(\cfrac{2y}{3}-\cfrac{3}{4}=\cfrac{1}{12}\implies \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{12}}{12\left( \cfrac{2y}{3}-\cfrac{3}{4} \right)=12\left( \cfrac{1}{12} \right)}\implies 8y-9=1 \\\\\\ 8y=10\implies y=\cfrac{10}{8}\implies y=\cfrac{5}{4}\)
Step 1: Add 3/4 on both sides
We get
2y/3 = 1/12+3/4
We add fractions by calculating a common denominator, adjusting the numerators accordingly and adding them. See this in action below:
12 and 4 have a common multiple in 12 which will be our common denominator. Now, 1/12 does not need to be adjusted, but 3/4 becomes 3*3 / 3*4 = 9/12.
In total 1/12 + 9/12 = 10/12
So, we have 2y/3 = 10/12
Now we multiply both sides by 3, so that the 3 will cancel out the 3 in the denominator on the left side:
2y =30/12
Now we just need to divide by 2 and get the solution:
y = 15/12 = 3*5 / 3*4 = 5/4
Therefore the final answer is A:
The solution set is {5/4}
Please help meee im being timed on thisss
Answers
Answer:
y=0.25x
We can think of k as an unknown number.
8×_=2.00
12×_=3.00
20×_=5.00
If we divide 2 with 8 we are left with 0.25.
It's the same for the other numbers so we know the constant is 0.25.
When we use the formula y=0.25x with the numbers above, it is correct.
8×0.25=2.00
12×0.25=3.00
20×0.25=5.00
Solve for x.
X - 2 = 3( 2 - X ) divided by 4
Answers
Answer:
x = 7/12
Step-by-step explanation:
We start off by multiplying both sides by 4:
4(x-2) = 3(2-x)
Distribute the 4 and the 3:
4x - 8 = 6 - 3x
Bring all the terms with the x at the first side:
4x + 3x = 6 + 8
7x = 12
x = 7/12
Which of the following would best be addressed by a scatter plot?
Answers
Answer:
C
Step-by-step explanation:
There has to be two variables it's being compared to, in which case this is the blood sugar level and the amount of sugar
Joseline has 347 marbles. Ever has 4 times as many as Joseline. Pablo has 799 fewer than Ever. How many marbles does Pablo have? Joseline tiene 347 canicas. Ever tiene 4 veces más que Joseline. Pablo tiene 799 menos que nunca. ¿Cuántas canicas tiene Pablo?
Answers
Answer:
its D
Step-by-step explanation:
What is the measure (in radians) of central angle 0 in the circle below? Enter an exact expression.
Answers
Answer:
\( \frac{\pi^{c} }{3} \)
Step-by-step explanation:
Measure of the length of an arc of a circle is given as:
\(l = \frac{ \theta}{2\pi} \times 2\pi r \\ \\ \pi = \frac{ \theta}{2\pi} \times 2\pi \times 3 \\ \\ 3 \theta = \pi^{c} \\ \\ \theta = \frac{\pi^{c} }{3} \\ \)
What does it mean to be a Rigid Motion?
Answers
Answer:
Rigid Motion: Any way of moving all the points in the plane such that. a) the relative distance between points stays the same and. b) the relative position of the points stays the same. There are four types of rigid motions that we will consider: translation, rotation, reflection, and glide reflection.
~Sophia
Which angle is coterminal with a 130° angle? A. An angle measuring –130° O B. An angle measuring 310° C. An angle measuring 490° O D. An angle measuring 480°
Answers
Answer:
Option C
Step-by-step explanation:
Positive coterminal angle of 130° is
(130+360)°
= 490°
Answered by GAUTHMATH
Answer:
An angle measuring 490
Step-by-step explanation:
it was right
Find an equation of the line described below. Write the equation in slope intercept form( solved for y) when possible through (8,5) and (5,8)
Answers
\((\stackrel{x_1}{8}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{8}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{8}-\stackrel{y1}{5}}}{\underset{\textit{\large run}} {\underset{x_2}{5}-\underset{x_1}{8}}} \implies \cfrac{ 3 }{ -3 } \implies - 1\)
\(\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{5}=\stackrel{m}{- 1}(x-\stackrel{x_1}{8}) \\\\\\ y-5=-x+8\implies {\Large \begin{array}{llll} y=-x+13 \end{array}}\)
If f(x) = 4 – x2 and g(x) = 6x, which is the value of (g – f)(3)? (g – f)(3)=
Answers
6(3)-4-x^2
18-4-x^2
14-x^2
Hope it helps
Scarlet believes that she will be able to sell 132 boxes of cookies in her Girl Scout troop. If there are 12 boxes in each crate how many crates should she order to sell
Answers
Answer:
11
Step-by-step explanation:
132 ÷ 12 = 11
Answer:
11 ( Did it on college bridge )
Step-by-step explanation:
Which of the following equations demonstrate that the set of polynomials is
not closed under the certain operations?
A. Subtraction: (3x^4+x^3)-(-2x^4+x^3)=5x^4
B. Addition: (x^2+x)+(x+1)=x^2+2x+1
C. Division: (x^2-5x+3)÷(x-2)=x-3+-3/x-2
D. Multiplication: (x^2-5x+3)(x-5)=x^3-10x^2+28x-15
Answers
9514 1404 393
Answer:
C. Division: (x^2-5x+3)÷(x-2)=x-3+-3/x-2
Step-by-step explanation:
The set of polynomials is closed under all basic arithmetic operations except division. The reciprocal of a (non-constant) polynomial is not a polynomial.
The division example shown in choice C illustrates the set is not closed under division.
Alright, -3r + 4(-3r + 2) = 53 how do I break it down and solve??
Answers
Answer:
r = -3
Step-by-step explanation:
-3r + 4(-3r +2) = 53
-3r + -12r + 8 = 53
-8 -8
-3r + -12r = 45
-15r = 45
Divide both sides by -15 to get
r = -3
Answer:
r = -3
Step-by-step explanation:
expand 4(-3r+2)
= -12r+8
add similar variables
= -15r+8=53
subtract 8 from both sides
= -15r+8-8=53-8
simplify
= -15r=45
divide 45 by -15
= -3
110 percent of 90 is what number
Answers
Answer:
9 times 11 equals 99
99
if you are satisfied with my answer, please mark brainliest :D
Step-by-step explanation:
Answer: 99
Step-by-step explanation:
a tank truck holds 33.8 kl of oil. How many gallons does it hold
Answers
9. Use the graph of the function f(x) = x³ – 7x² + 10x to
x`
identify its relative maximum and minimum.
da
-4
8
8
2
K
T
2
da
y
8
+w
8
maximum = 4.1, minimum = -8.2
maximum = 0.9, minimum = 3.8
Answers
The extremas of the function f(x) = x³ - 7x² + 10x are given as follows:
Relative maximum: (0.88, 4.061).Relative minimum: (3.786, -8.209).What are the relative minimums and the relative maximums of a function?The relative minimums of a function are given by the points in which the function's behavior changes from decreasing to increasing, that is, where the function curves down.The relative maximums of a function, meanwhile, are given by the points in which the function's behavior changes from increasing to decreasing, that is, where the function curves up.More can be learned about extremas of a function at https://brainly.com/question/9839310
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In the diagram, SR = 4/2 and QR = V10. What is the
perimeter of parallelogram PQRS?
Answers
Answer:The perimeter of parallelogram PQRS is 24 units.
Step-by-step explanation:
There are two ways to solve this problem.
Method 1:
Step 1: Find the length of each side of the parallelogram:
PQ = V10
QR = V10
RS = 4/2
SP = 4/2
Step 2: Calculate the perimeter of the parallelogram:
Perimeter = PQ + QR + RS + SP
Perimeter = V10 + V10 + 4/2 + 4/2
Perimeter = 2V10 + 4
Method 2:
Step 1: Find the length of the diagonal of the parallelogram:
PQ = V10
RS = 4/2
Step 2: Use the formula for the perimeter of a parallelogram:
Perimeter = 2(PQ + RS)
Perimeter = 2(V10 + 4/2)
Perimeter = 2V10 + 4