Total discount will be of $14.85.
To calculate the total discount Jennifer received on her purchase of music CDs, each original price must be multiplied by the discount rate of 33 percent (or 0.33 in decimal form).
Let's calculate the discount for each CD first:
For the $9.99 CD: $9.99 × 0.33 = $3.30
For the $14.99 CD: $14.99 × 0.33 = $4.95
For the $19.99 CD: $19.99 × 0.33 = $6.60
Next, add up the discounts to find the total discount:
$3.30 + $4.95 + $6.60
= $14.85
Which statements describe one of the transformations performed on f(x)=x^2 to create g(x)=2(x+5)^2+5
Answer:
Translated to the left 5 units and up 5 units and compressed horizontally by 2 units.
Step-by-step explanation:
The parent function given is [tex]f(x)=x^2[/tex]
This function has its vertex at the origin.
If we move this function 5 units to the left and 5 units up, then its vertex will now be at [tex](-5,5)[/tex].
If the parent function is then compressed horizontal by a factor of 2, then the transformed function will now have equation.
[tex]g(x)=2(x+5)^2+5[/tex]
What is the greatest common factor of 35b^2,15b^3 and 5b?
An experiment consists of rolling a die, flipping a coin, and spinning a spinner divided into 4 equal regions. The number of elements in the sample space of this experiment is
12
3
6
48
Answer:
48
Step-by-step explanation:
The sample space of the experiment contains all the possible outcomes of all events.
There are 3 events that are taking place.
Rolling a die which has 6 possible outcomes.
Flipping a coin which has 2 possible outcomes.
Spinning a spinner which has 4 possible outcomes.
Since the outcome of each event is independent of the other, the total possible outcomes will be equal to the product of outcomes of each event.
i.e.
Total outcomes = 6 x 2 x 4 = 48
The sample space of the experiment contains all the possible outcomes. so the number of elements in the sample space of this experiment will be 48
Answer:
48
Step-by-step explanation:
In the given experiment, three events take place which include rolling a die, flipping a coin and spinning a spinner.
The possible outcomes of each of these events are as follows:
Rolling a die - 6
Flipping a coin - 2
Spinning a spinner - 4
Therefore, by multiplying their possible outcomes, we can find the number of elements in the sample space of this environment.
Number of elements = 6 × 2 × 4 = 48
Tony plans to run a 5,000-meter fun run at a constant rate of 250 meters per minute. He uses function f to model his distance from the finish line x minutes after the start of the race.
x f(x)
0 5,000
1 4,750
2 4,500
3 4,250
4 4,000
5 3,750
6 3,500
A.
Tony's function is always decreasing.
B.
Tony's function is always negative.
C.
Tony's function is exponential.
D.
The domain of Tony's function is [0 , 5,000].
Answer:
Option A.
Step-by-step explanation:
Based on the information provided on the question
the function used to model Tony's run is:
f(x) = -250*x + 5000
This means that after x = 20 minutes, Tony will arrive to the finish line
f(20) = -250*(20) + 5000 = -5000 + 5000 = 0
The function is always decreasing, because we are dealing with a line with negative slope.
Option A.
a. The ratio of boys to girls in a class is 6 to 5 . What is the ratio of girl s to all the students in the class? b. If the ratio of boys to girls in a class is m:n, what is the ratio of girl s to all the students in the class? c. If five elevenths of the class are girls, what is the ratio of girls to boys? a. The ratio, in simplest form, of the number of girl s to the total number of students is 5 :11 . b. The ratio, in simplest form, of girl s to all the students in the class is nothing :nothing . c. The ratio, in simplest form, of girls to boys is nothing :nothing.
Answer:
a. Ratio of girls to all students 5:11
b. Ratio of girls to all students n:m+n
c. Ratio of girls to boys 5:6
Step-by-step explanation:
In order to find each of these, we simply need to look at these as a comparison of two data points.
a. In this example, we are looking for girls to all students. We already who there would be 5 girls in the comparison. Then we need to find the whole amount, which is girls + boys (6 + 5 = 11)
5:11
b. In this example, we are looking for girls to all students. We already who there would be n girls in the comparison. Then we need to find the whole amount, which is girls + boys (m + n)
n:m+n
c. In this example, we are looking for girls to boys. We already who there would be 5 girls in the comparison. Then we need to find the boys amount, which is whole - girls (11 - 5 = 6)
5:6
Final answer:
The ratio of girls to all students in a class with a boy-girl ratio of 6 to 5 is 5 to 11. The general ratio of girls to all students with a boy-girl ratio expressed as m:n is n:(m+n). Lastly, if five elevenths of the class are girls, then the ratio of girls to boys is 5 to 6.
Explanation:
Understanding Ratios in a Classroom Setting
The ratio of boys to girls in a class is initially given as 6 to 5. To find the ratio of girls to all the students in the class, the sum of the parts of the ratio must first be calculated, which is 6 (boys) + 5 (girls) = 11 (total students).
Therefore, the ratio of girls to the total number of students is 5 to 11. This is because for every 11 students, 5 are girls. If the ratio of boys to girls is expressed as m:n, then the ratio of girls to all students will be n:(m + n).
For a scenario where five elevenths of the class are girls, the ratio of girls to boys needs to be determined. As five elevenths represent the girls, six elevenths must represent the boys, since they sum up to the whole, which is one (or 11/11). Therefore, the ratio of girls to boys is 5:6.
PLEASE HELP !!ASAP
Write this equation in Standard Form:
y space equals space 6 over 5 x space plus space 2
6x + 5y = -10
6x + 5y = 2
6x – 5y = 2
6x – 5y = -10
which one is it???
Answer:
6x-5y=-10
Step-by-step explanation:
We are given an equation in words and we are to translate it and then re-write its standard form:
'y space equals space 6 over 5 x space plus space 2 '
[tex] y = \frac { 6 } { 5 } x + 2 [/tex]
Re-arranging this given equation to get:
[tex] y - 2 = \frac { 6 } { 5 } x [/tex]
[tex]5(y-2)=6x[/tex]
[tex]5y-10=6x[/tex]
[tex]6x-5y=-10[/tex]
So the correct answer option is 6x-5y=-10.
Which of these points does not change its location when it is reflected across the y-axis? A (2, 0) b (0, 6) c (3, 3) d (5, 5)
Answer:
B. (0,6)
Step-by-step explanation:
To solve this question, you'll need to figure out what the final point is after reflecting each point. A quick way to figure this out is by multiplying (-1) to the x-coordinate.
When you reflect A. (2,0) over the y-axis, the point becomes (-2,0).
When you reflect C. (3,3) over the y-axis, the point becomes (-3,3).
When you reflect D. (5,5) over the y-axis, the point becomes (-5,5).
The only answer that does not change location is B. (0,6) as it stays at (0,6). If you multiply 0 by any number, it will always stay 0.
Multiplying the x-coordinate by (-1) to find the reflection point only works if you are reflecting it over the y-axis. You would multiple the y-coordinate by (-1) if you were reflecting over the x-axis.
One geometry question need this as soon as possible please!
simplify :7x + 3x - 5 + 8x + 5 = 180
x = 10
in the circle below, f is the center, gi is the diameter and m
Answer:
Part a) [tex]m<HIG=40\°[/tex]
Part b) IHG is a semicircle and GJI is a semicircle
Part c) HIJ is a major arc and HIJG is a major arc
Part d) [tex]arc\ GH=80\°[/tex]
Part e) [tex]arc\ GJI=180\°[/tex]
Step-by-step explanation:
Part a) Give an inscribed angle
we know that
The inscribed angle measures half that of the arc comprising
so
in this problem m<HIG is an inscribed angle
[tex]m<HIG=\frac{1}{2}(arc\ HG)[/tex]
[tex]arc\ HG=80\°[/tex] ----> by central angle
substitute
[tex]m<HIG=\frac{1}{2}(80\°)=40\°[/tex]
Part b) Give a semicircle
we know that
The diameter divide the circle into two semicircles
so
GI is a diameter
therefore
IHG is a semicircle
GJI is a semicircle
Part c) Give a major arc
we know that
The measure of a major arc is greater than 180 degrees
therefore
HIJ is a major arc
HIJG is a major arc
Part d) Measure of arc GH
we know that
[tex]arc\ GH=m<HFG[/tex] ----> by central angle
so
[tex]arc\ GH=80\°[/tex]
Part e) Measure of arc GJI
we know that
[tex]arc\ GJI=180\°[/tex] ----> the arc represent a semicircle
Is (–2n)^4 = –8n^4? Choose the best explanation for why or why not.
A. Yes; –2 times 4 makes –8, and the n becomes n^4.
B. Yes; for n = 1, (-2n)^4 = -8 x 1 not equal to -8n^4
C. No; for values other than 0, (–2n)^4 = 16n^4 not equal to –8n^4.
D. No; the negative in front of the 2 means –2n^4 needs to become 1/2n^4
Answer:
The answer would be C
Final answer:
No, (-2n)⁴ is not equal to -8n⁴ because when -2 is raised to the fourth power, it results in a positive 16, making the correct evaluation of the expression 16n⁴. The correct answer is option (C).
Explanation:
The question is whether (-2n)⁴ is equal to -8n⁴. To evaluate the expression (-2n)⁴, you must raise both -2 and n to the fourth power. Since the exponent is even, the negative sign in front of 2 will become positive after being raised to the fourth power: (-2n)⁴ = (-2)⁴ × n⁴ = 16n⁴
So, the correct statement is No; for values other than 0, (–2n)⁴ = 16n⁴ not equal to –8n⁴. When raising a negative number to an even power, the result is positive, and (-2)⁴ equates to 16, not -8. Therefore, the option C is correct.
As a result, the misconception that -2 times 4 makes -8 is incorrect when dealing with exponents, as the negative sign is squared, turning it positive.
What is the graph of the function x^2-9x+20 over x-4
Answer:
a straight line: y = x -5, with a hole at (4, -1)
Step-by-step explanation:
The rational function can be simplified to ...
[tex]f(x)=\dfrac{x^2-9x+20}{x-4}=\dfrac{(x-5)(x-4)}{(x-4)}\\\\f(x)=x-5\qquad\text{$x\ne 4$}[/tex]
The graph of this is a straight line, with a hole at x=4, where the function is not defined.
Jerome solved the equation below by graphing.
log2(x) + log2(x-2) = 3
Which of the following shows the correct system of equations and solution?
Answer:
B. x = 4
Step-by-step explanation:
I can't speak to the first part of this question, as I don't totally have context for what they're asking, but we can solve for x using one of the laws of logarithms, namely:
[tex]\log_bm+\log_bn=\log_bmn[/tex]
Using this law, we can combine and rewrite our initial equation as
[tex]\log_2(x\cdot(x-2))=3\\\log_2(x^2-2x)=3[/tex]
Remember that logarithms are simply another way of writing exponents. The logarithm [tex]\log_28=3[/tex] is just another way of writing the fact [tex]2^3=8[/tex]. Keeping that in mind, we can express our logarithm in terms of exponents as
[tex]\log_2(x^2-2x)=3\rightarrow2^3=x^2-2x[/tex]
2³ = 8, so we can replace the left side of our equation with 8 to get
[tex]8 = x^2-2x[/tex]
Moving the 8 to the other side:
[tex]0=x^2-2x-8[/tex]
We can now factor the expression on the right to find solutions for x:
[tex]0=(x-4)(x+2)\\x=4, -2[/tex]
The only option which agrees with our solution is B.
Answer:
The answer is:
[tex]y_1=\dfrac{\log x}{\log 2}+\dfrac{\log (x-2)}{\log 2}\ ,\ y_2=3\ ,\ x=4[/tex]
Step-by-step explanation:
We are given a logarithmic expression as:
[tex]\log_2 x+log_2 (x-2)=3[/tex]
As we know that:
[tex]\log_a x=\dfrac{\log x}{\log a}[/tex]
Hence, we get the logarithmic expression as follows:
[tex]\dfrac{\log x}{\log 2}+\dfrac{\log (x-2)}{\log 2}=3[/tex]
We know that we can get the system of equations as follows:
[tex]y_1=\dfrac{\log x}{\log 2}+\dfrac{\log (x-2)}{\log 2}[/tex]
and
[tex]y_2=3[/tex]
Hence, when we plot the graph for this system of equations we see that the point of intersection of the graph is: (4,3)
Hence, the solution is the x-value of the point of intersection of the two equations.
Hence, x=4 is the solution.
Hence, the correct option is:
[tex]y_1=\dfrac{\log x}{\log 2}+\dfrac{\log (x-2)}{\log 2}\ ,\ y_2=3\ ,\ x=4[/tex]
The side of a square is 12 feet. What is the area of the square? A) 12 sq. Ft. B) 24 sq. Ft. Eliminate C) 48 sq. Ft. D) 144 sq. Ft.
Answer:D) 144
Step-by-step explanation:12*12=144
Answer:
the answer is 144
Step-by-step explanation:
Marvin says that all rhombuses are squares are Athena says that all squares are rhombuses who is correct explain
Answer:
Athena
Step-by-step explanation:
Squares are rhombuses but rhombuses are not squares
Using the diagram, to what height can the crane raise building material? Round to the nearest foot.
A) 62 ft
B) 75 ft
C) 78 ft
D) 80 ft
Answer:
C) 78 ft
Step-by-step explanation:
The side opposite the angle has the ratio to the hypotenuse:
Sin = Opposite/Hypotenuse
Then the solution to this problem is found by substituting the given information and solving for the height.
sin(45°) = height/(110 ft)
(110 ft)·sin(45°) = height ≈ 77.7817 ft
Rounded to the nearest foot, the crane can raise material to a height of 78 ft.
At what x-values do the graphs of the functions y=cos 2x and y=1-sin^2x intersect over the interval 0 < x < pi
_ _
Answer:
No solution.
Step-by-step explanation:
The given functions are
[tex]y=\cos2x[/tex] and [tex]y=1-\sin^2x[/tex].
To find the point of intersections of the graphs of the two functions: we equate them and solve for [tex]x[/tex].
[tex]\cos2x=1-\sin^2x[/tex]
Recall the double angle identity; [tex]\cos2x=cos^2x-sin^2x[/tex]
Apply this identity to obtain;
[tex]cos^2x-sin^2x=1-\sin^2x[/tex]
[tex]\Rightarrow cos^2x=1[/tex]
[tex]\cos x=\pm1[/tex]
[tex]x=0\:or\:x=\pi[/tex]
if the interval is [tex]0\le x\le \pi[/tex], then the two graphs intersect at [tex]x=0\:or\:x=\pi[/tex]
But [tex]x=0\:and\:x=\pi[/tex] does not belong to the open interval [tex]0\:<\:x\:<\:\pi[/tex]
No point of intersection.
HELPPPPPPPPPPPPPPP ONNNNNNNNNNN MATHHHHHHHH
Kendall is buying a home for $119,000. She is making a 12% down payment and financing the rest with a 20-year loan at a 4.5% interest. What is her monthly mortgage payment?
Answer:
$455.97
Step-by-step explanation:
119000 × 0.12 = 14280
119000 - 14280 = 104720
104720 × 1.045 = 109432.4
109432.4/(20×12)
109432.4/240
455.97 a month
Answer:
$662.46
Step-by-step explanation:
In quadrilateral ABCD, diagonals AC and BD bisect one another:
Quadrilateral ABCD is shown with diagonals AC and BD intersecting at point P.
What statement is used to prove that quadrilateral ABCD is a parallelogram? (5 points)
Angles BAD and ADC are congruent.
Corresponding angles BCD and CDA are supplementary.
Sides CD and DA are congruent.
Triangles BPA and DPC are congruent.
Answer:
Triangles BPA and DPC are congruent.
Step-by-step explanation:
The statement above is the only one of the bunch that is true, so is the best selection.
You don't even need to worry too much about how you might make the proof. You just need to be concerned with which are plausible answers. There's only one.
A company offers you a job with an annual salary of $60 000 for the first year and a 5% raise every year after. Approximately how much money in total would you earn in 5 years of working there?
$76577
$331538
$315000
$75000
Answer:
$75000
Step-by-step explanation:
5% of $60000 is $3000 and $3000 x 5 is $15000 and $15000 + $60000 is $75000
To calculate the total salary over 5 years with an initial salary of $60,000 and a 5% annual raise, you add the salary of each year considering the raise. The salaries over 5 years will be $60,000; $63,000; $66,150; $69,457.50; $72,930.38 respectively, amounting to a total of $331,537.88, which is approximately $331,538.
The question asks how much money you would earn total after 5 years of working at a company starting with a $60,000 salary and receiving a 5% raise each year. This is a problem of geometric progression in mathematics. To calculate the total amount earned over 5 years, we have to apply the formula for the sum of a geometric series because the salary increases by a fixed percentage each year. The salary each year is as follows: Year 1 - $60,000, Year 2 - $60,000*1.05, Year 3 - $60,000*(1.05)^2, Year 4 - $60,000*(1.05)^3, and Year 5 - $60,000*(1.05)^4.
Here is the calculation step-by-step:
Year 1: $60,000Year 2: $60,000 * 1.05Year 3: $60,000 * (1.05)²Year 4: $60,000 * (1.05)³Year 5: $60,000 * (1.05)⁴Now, add up the salaries for each year to find the total earnings:
Year 1: $60,000Year 2: $63,000 (5% of $60,000 is $3,000, so $60,000 + $3,000)Year 3: $66,150Year 4: $69,457.50Year 5: $72,930.38Add up these amounts to get the total earnings after 5 years:
Total = $60,000 + $63,000 + $66,150 + $69,457.50 + $72,930.38 = $331,537.88, which can be rounded to approximately $331,538.
Therefore, the correct answer is: $331,538.
Subtract 8 y^2 − 5 y + 7 from 2 y^2 + 7 y + 1 1
The answer is: −6y ^2 +12y+4
Answer:
[tex]\large\boxed{-6y^2+12y+4}[/tex]
Step-by-step explanation:
[tex](2y^2+7y+11)-(8y^2-5y+7)\\\\=2y^2+7y+11-8y^2-(-5y)-7\\\\=2y^2+7y+11-8y^2+5y-7\qquad\text{combine like terms}\\\\=(2y^2-8y^2)+(7y+5y)+(11-7)\\\\=-6y^2+12y+4[/tex]
You have a job as a teacher with a starting salary of $37,185. You will receive a 6% raise every year. How much will you salary be after 5 year?
if it is asking for compound interest your answer should be 49761.9
Cabrera bought 4 baseballs for him and his friends to use during practice. Each baseball cost 3.42. What was the total cost of the 4 baseballs?
Answer:
$13.68
Step-by-step explanation:
3.42 x 4
Final answer:
To find the total cost of 4 baseballs, each costing $3.42, we multiply the cost of one baseball by the number of baseballs, resulting in a total cost of $13.68.
Explanation:
The question asks to calculate the total cost of 4 baseballs, provided that each costs $3.42. To find the total cost, we need to multiply the cost of one baseball by the number of baseballs that were purchased. Hence, the calculation of the total cost of baseball is given by $3.42 (cost of one baseball) × 4 (number of baseballs) = $13.68. Therefore, the total cost of the 4 baseballs is $13.68.
One of the roots of the equation 10x2?33x+c=0 is 5.3. Find the other root and the coefficient c.
The other root of the quadratic equation is -2, and the coefficient c is -106, found using the sum and product of roots formulas.
The other root and the coefficient c of the quadratic equation 10x²- 33x + c = 0, given that one of the roots is 5.3. Using the fact that the sum of the roots of a quadratic equation ax² + bx + c = 0 is equal to -b/a, we can find the other root. With one root known to be 5.3 and a = 10, b = -33, the sum of the roots must be 3.3. Therefore, the other root is 3.3 - 5.3 = -2. To find the coefficient c, we use the fact that the product of the roots of a quadratic equation is equal to c/a. Thus, c = 5.3 * (-2) * 10 = -106. The other root of the equation is -2, and the coefficient c is -106.
Given that DE = 75 inches what is the length of EF ?
Answer:
61.19 inchesStep-by-step explanation:
Use the sine law:
[tex]\dfrac{DE}{\sin(\angle F)}=\dfrac{EF}{\sin(\angle D)}[/tex]
We have:
[tex]DE=75\ in\\\\m\angle F=75^o\to\sin75^o\approx0.9659\\\\m\angle D=52^o\to\sin52^o\approx0.788[/tex]
Substitute:
[tex]\dfrac{75}{0.9659}=\dfrac{EF}{0.788}[/tex] cross multiply
[tex]0.9659EF=(75)(0.788)[/tex]
[tex]0.9659EF=59.1[/tex] divide both sides by 0.9659
[tex]EF\approx61.19[/tex]
The length of the EF is 61.19 inches if the DE = 75 inches option fourth is correct.
What is the triangle?In terms of geometry, the triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.
We have:
DE = 75 inches
By using the sin law:
sin52/EF = sin75/DE
sin52/EF = sin75/75
sin52/EF = 0.0128
EF = 61.185 ≈ 61.19 inches
Thus, the length of the EF is 61.19 inches if the DE = 75 inches option fourth is correct.
Learn more about the triangle here:
brainly.com/question/25813512
#SPJ2
Choose the function whose graph is given by:
Answer:
y = tan(x -π) -1
Step-by-step explanation:
It looks like a straight tangent function shifted down one unit. Since the tangent function has a period of π, ...
tan(x -π) = tan(x)
so you're only looking for the function that has a translation downward of 1 unit. Of course that translation is accomplished by adding -1 to the original function.
The appearance of the graph is of ...
y = tan(x) -1
The choice that is equivalent to this is ...
y = tan(x -π) -1
Answer:
y = tan (x-pi)-1
Step-by-step explanation:
The function in the graph is a periodic function with intervals of pi and having discontinuities at regular intervals.
Hence this must be a transformation of the original trignometric funciton
tan x. y intercept is at -1 which shows that there is a vertical shift of 1 unit down.
Hence the funciton is y = tanx-1
But tan x is not given in any of the options.
Let us check which is equivalent to tan x-1
We find that tan(x-pi) = -tan (pi-x) = -(-tanx) = tanx
Hence the option 3 is the right answer
New refrigerator costs $3,250 and it was on sale 20% off. How much would you save if you buy it on sale?
Answer:
(3250/100)*80 = $ 2600 - 3250 = $650
Step-by-step explanation:
HELPPPPP!! The formula gives the volume V of a right cylinder with radius r and height h.
V=πr²h Solve for r.
Explain your answer. Should either answer be discarded? Why or why not?
Answer:
see explanation
Step-by-step explanation:
Isolate r² by dividing both sides by πh
r² = [tex]\frac{V}{h\pi }[/tex]
Take the square root of both sides
r = ± [tex]\sqrt{\frac{V}{h\pi } }[/tex]
The negative part can be discarded as r > 0, hence
r = [tex]\sqrt{\frac{V}{h\pi } }[/tex]
What is the volume of a cylinder whose base has a diameter of 10 and whose height is 12?
the answer is 942.because the formula is V=Bh. V=pir2h. so V= 3.14×5squared×12. so 3.14×25×12. 25×12=300. and 3.14×300=942
∠A and ∠B supplementary and vertical angles. What is m∠B
135
90
180
45
Answer:
90°
Step-by-step explanation:
Supplementary means they add to 180°. Vertical angles are congruent, so they must both be 180°/2 = 90°.
Answer:
90
Step-by-step explanation:
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