A DVD normally costs $20. The price changes to $9.50 when it goes on sale. How much is the percent of change on the DVD
Answers
Tbh it might be 55 percent
Related Questions
At what hour will the cost be the same?
Answers
Answer:
The equation is 19+3.5h=10+4.75h. The answer is 7.2 hours.
Step-by-step explanation:
The equation for this problem would be 19+3.5h=10+4.75h. All you have to do is find h. So subtract 3.5h from both sides and 10 from both sides. You will get the equation 1.25h=9. Divide 1.25 from both sides and you will end up with h=7.2 hours.
give explanation please, thank
you.
(b) Let S = {x|x = 1 - 1, n = 1,2,3,... ..}.. i) What is the set of boundary points of S? ii) What is the set of interior points of S. iii) Is S an open set? Briefly explain. iv) Is S a closed set? Br
Answers
(i) The set of boundary points of S is {1}.
(ii) There are no interior points in S.
(iii) S is not an open set because it does not contain any interior points.
(iv) S is a closed set because it contains all of its boundary points.
Let's analyze the set S step by step:
(i) Boundary points of S:
A boundary point of a set is a point that is neither an interior point nor an exterior point. In this case, since S consists of the elements x = 1 - 1/n for n = 1, 2, 3, ..., we can see that as n approaches infinity, x approaches 1. So, the set of boundary points of S is {1}.
(ii) Interior points of S:
An interior point of a set is a point that has an open neighborhood contained entirely within the set.
In this case, since S is defined as x = 1 - 1/n for n = 1, 2, 3, ..., we can see that as n increases, x approaches 1.
However, for any n, we can always find another n' greater than n such that 1 - 1/n' is closer to 1.
Therefore, there are no interior points in S.
(iii) S as an open set:
An open set is a set that contains all of its interior points.
Since S has no interior points (as discussed in part ii), it cannot contain all of its interior points.
Therefore, S is not an open set.
(iv) S as a closed set:
A closed set is a set that contains all of its boundary points.
In this case, the set of boundary points of S is {1}, and this set is contained within S itself.
Therefore, S contains all of its boundary points and is considered a closed set.
In summary, the set S has a single boundary point {1}, no interior points, is not an open set, and is a closed set.
For similar question on boundary points.
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The ratio of blue crayons to red crayons in a classroom is 32:28. The classroom has 16 blue crayons.
How many red crayons are in the classroom?
Answers
32x= 448
x=14
There are 14 red crayons in classroom
Answer:
14 red crayons
Step-by-step explanation:
since we already know the ratios of the crayons we are going to use ratio and proportion to solve our question B:R is 32:28 and they are directly proportional meaning we can scale the quantities by multiplying.32:28 and 16:R , r is the unknown quantity ,then we cross multiply the 2 ratios to get 32R= 448, then we divide by32 both sides so we can remain with the value of R which is 14
A 95% confidence interval for the population mean implies that if samples are drawn repeatedly and confidence intervals for μ are constructed, then 95% of the confidence intervals computed will contain the population mean (true or false)
Answers
True.
A 95% confidence interval for the population mean means that if we draw multiple samples from the same population and construct confidence intervals for the mean using each sample, then 95% of those intervals will contain the true population mean. This is because the confidence interval is computed based on the sample mean and the sample's standard deviation, which are random variables that are expected to vary from sample to sample. Therefore, we cannot be 100% certain that the true population mean is within any particular confidence interval, but we can be confident (95% confident, in this case) that most of the intervals we construct will contain the true mean. A 95% confidence interval for the population mean implies that if samples are drawn repeatedly and confidence intervals for μ are constructed, then 95% of the confidence intervals computed will contain the population mean. This means that you can be 95% confident that the true population mean lies within the calculated interval.
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2a( 3a + b)- 3a(2a+4b)
Answers
Answer:
-10ab
STEP BY STEP EXPLANATION
2a (3a + b) -3a(2a +4b)
6a² + 2ab - 6a²- 12ab
2ab-12ab 6a²-6a²
-10ab
Hope this will help you if not then sorry :)
Answer:
\(2a( 3a + b)- 3a(2a+4b)\)
Expand by distributing terms.
\(6a ^{2} +2ab-3a(2a+4b)\)
Expand by distributing terms.
\(6a 2+2ab-(6a^{2} +12ab)\)
Remove parentheses
.\(6a ^{2} +2ab-6a^{2} -12ab\)
Collect like terms.
\((6a^{2}-6a^{2})+(2ab-12ab)\)
\(=-10ab\)
OAmalOHopeO
what is this answer
6p>48
Answers
Answer: p is greater than or equal to 8
Step-by-step explanation:
To isolate the variable (p) you divide both sides of the equation by 6 to get p by itself and the answer comes out clean because 48 is a multiple of 6.
Answer:
Divide both sides by the same factor
6p > 48
6p > 48
--- ---
6 > 6
result
p > 8
A shop assistant sells goods to the value of $3400 during a certain week. If she is
paid 7.5% commission on these sales, calculate the amount of commission earned.
If she is paid a basic wage of $450, calculate her total wage for that week.
Answers
Answer:
$705
Step-by-step explanation:
($3400)(0.075) = $255 commission earned
Total wage for that week = $450 + $255 = $705
note: this answer assumes that $450 is the weekly basic wage, not daily
What is the measure of y? 3 27 y Z * A z = [?] Give your answer in simplest form.
Answers
The required measure of x would be 9√10 units for the attached figure.
What is the right triangle?A right triangle is defined as a triangle in which one angle is a right angle or two sides are perpendicular.
The right triangle is given in the question, as follows:
We have to determine the measure of x for the attached figure.
According to Euclidian theorem, the required solution would be as:
x² = 27 × (27+3)
x² = 27 × 30
Apply the multiplication operation,
x² = 810
Apply the square root property for both sides
x = 9√10
Therefore, the required measure of x would be 9√10 units.
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The question seems to be incomplete the correct question has been attached below.
![What is the measure of y? 3 27 y Z * A z = [?] Give your answer in simplest form.](https://i5t5.c14.e2-1.dev/h-images-qa/answers/attachments/zvUoUm15uOpcFyvu3s9CS1nNEsjSNo3C.png)
Trevor is making payments on a car that costs 26,555 dollars. He makes 36 equal payments. If he rounds the equal payments up to the nearest whole dollar, about how much will he overpay after 36 months? Explain.
Answers
Answer:
$13 overpayment
Step-by-step explanation:
We can find the amount Trevor should pay each month by dividing the $26,555 by 36 months:
($26,555/(36 months)) = $737.64 per month
Since Trevor decide to round up to the nearest dollar, he will pay $738 each month. That's an overpayment of $0.361 each month.
After 36 months of overpaying by $0.361 each month, Trevor will have overpaid:
($0.36/month)*(36 months) = $13 overpayment
Emory bought a new computer that retails for $399. If the store is currently
running a promotion for 30% off and the sales tax in her state is 6%, what is
Emory's total at checkout?
A. $296.06
B. $279.30
C. $253.35
D. $422.94
Answers
Answer:
A. $296.06
Step-by-step explanation:
$399-30%= $399*0.7= $279.30
$279.30+6%= $279.30*1.06= $296.06
5.
Which picture shows a rotation of the flag?
(1)
(2)
(3)
(4)
Answers
Answer:
4 my good sir
Step-by-step explanation:
The volume of a cuboid is 40cm3.
The length is 2cm and the width is 4cm.
Work out the height of the cuboid.
Answers
Answer:
The height of the cuboid = 5 cm
Step-by-step explanation:
Explanation:-
Given that the volume of the cuboid = 40 cm³
Given that length of the cuboid (l) = 2 cm
Given that the width of the cuboid (w) = 4 cm
The volume of the cuboid is determined by
\(V = length X width X height\)
40 = 2× 4× h
h = 5
The height of the cuboid = 5 cm
is 6km is not as far as 6 miles true or false
Answers
Answer:
False.
6 miles is farther than 6 kilometers. One mile is equal to 1.60934 kilometers, so 6 miles is equal to 6 x 1.60934 = 9.65604 kilometers. Therefore, 6 miles is farther than 6 kilometers.
Step-by-step explanation:
The answer is:
trueWork/explanation:
We can't really compare two things if they have different units.
So we need to convert kilometers to miles first.
1 km is approximately equal to 0.621 miles.
So 6 km would be approximately 3.728 miles.
6 miles is further away than 3.728 miles.
Hence, the answer is true.6 km is not as far as 6 miles. And now we know why.
Four students are trying to find the rule that translates point N(–2, –4) to N prime (2, 4). Each student’s reasoning is shown below. Raheem: The rule is (x times (negative 1), y times (negative 1)) because Negative 2 times (negative 1) = 2 and Negative 4 times (negative 1) = 4. Casey: The rule is (x + 2, y + 4) because the image is (2, 4). Andrew: The rule is (x + 4, y + 0) because the coordinates are opposites. Lo: The rule is (x + 4, y + 8) because Negative 2 + 4 = 2 and Negative 4 + 8 = 4. Which student is correct?
Answers
Answer:
Raheem
Step-by-step explanation:
0.5 0.45 0.405 4.5 least to greatest
Answers
A paintball court charges an initial entrance fee plus a fixed price per ball. PPP represents the total price (in dollars) as a function of the number of balls used nn. P=0.80n+5.50P=0.80n+5.50P, equals, 0, point, 80, n, plus, 5, point, 50 What is the price for 101010 balls, not including the entrance fee?
Answers
Question:
A paintball court charges an initial entrance fee plus a fixed price per ball. P represents the total price (in dollars) as a function of the number of balls used n.
P=0.80n+5.50
What is the price for 10 balls, not including the entrance fee?
Answer:
$8
Step-by-step explanation:
We are given the function:
P=0.80n+5.50
Where n represents the number of balls. From this function, the entrance fee = 5.50
We are asked to calculate the price for 10 balls without the entrance fee. This is given as:
0.80n = 0.80 × 10 balls
= $8
The price for 10 balls, not including the entrance fee is $8
Answer:
The answer is 8
Step-by-step explanation:
The perimeter of a
rectangular swimming pool is 84
meters. The width of the pool is
three fourths the length. What
are the length and width of the
pool?
Answers
Answer:
24
Step-by-step explanation:
let \(\ell=length\)
then \(width=\frac{3}{4}\ell\)
since the perimeter is 84, then
\(2(length+width)=84\\ 2(\ell+\frac{3}{4}\ell)=84\\ 2(\frac{4}{4}\ell+\frac{3}{4}\ell)=84\\2(\frac{7}{4}\ell)=84\\ \frac{7}{2}\ell=84\\ \ell=\frac{84\times 2}{7}\\ \ell=24\)
Tamara attends a cycling class that starts at 6:00. The class lasts 45 minutes. What time does class end?
Answers
Answer:
6:45
Step-by-step explanation: add 45 min to 6:00 and you have your answer
Answer:6:45
Step-by-step explanation: 6:00 + 45minutes would be 6:45
Find the 7th term in the following sequence (n = 7)
f(n) = 5 + 8(n-1)
Also, for this question, state what a1 is (first term) and what you are doing to find each successive (next) term.
Answers
Answer:
I'm stuck on this one to
Step-by-step explanation:
please help im the worst at algebra 2
Answers
Answer:
Option AStep-by-step explanation:
According to the matrix, the system is:
3x + 2y -z = 40x + 3y + 7z = 8 ⇒ 3y + 7z = 8x - 3y + 4z = 7Correct match is A
Jason is on a diet. His goal is to lose 5.9 pounds per month. How much weight will he have lost after 3.3 months? A) 19.2 B) 19.47 C) 19.7 D) 19.77
Answers
Answer:
B) 19.47
Step-by-step explanation:
5.9*3.3=19.47
Answer:
B 19.47
Step-by-step explanation:
5.9 = 1
? = 3.3
cross multiply
5.9 × 3.3 = 19.47
Janelle has 342 pennies, 62 nickels, and 12 dimes. If Janelle exchanges her coins for dollars, how many dollars will she have? How many cents will remain?
Answers
Answer:
30 dollars and 23 cents
Step-by-step explanation:
hope this helps your welcome
if cos a>0 and cot a is undefined then where does the terminal side of a located?
A. Quadrant II
B.quadrant III
C.negative x axis
D.negative y axis
E.no such angle a exists
Answers
Answer:C
Therefore: In Quadrant I, cos(θ) > 0, sin(θ) > 0 and tan(θ) > 0 (All positive). For an angle in the second quadrant the point P has negative x
Step-by-step explanation:
(PLEASE HELP!!!)
The orginal price of the chair was $545. The tax on the chair was 4.5%.What is the exact price of the chair including the tax?
Answers
2+v=11
What value of v is a solution to this equation
Answers
Answer:
9
Step-by-step explanation:
subtract 2 on both sides
you get v=9
a chess club meets every week and has 6 members. each member of the club plays one opponent each week. how many weeks will it take for every member to play each of the other members of the club?
Answers
It will take 5 weeks for every member to play each of the other members of the club.
What are the arrangements?
A strategy or preparation for something, especially for it to occur in a certain way: Two days a week, she had the plan to work from home. The motel was filled, so we had to find another place to stay.
Here, we have
A chess club meets every week and has 6 members.
Each member of the club plays one opponent each week.
We have to find out how many weeks will it take for every member to play each of the other members of the club.
Total number of matches played = (6×5)/2 = 15
Games per week = 3
Every member is to play each of the other members of the club = 15÷3= 5.
Hence, it will take 5 weeks for every member to play each of the other members of the club.
To learn more about the arrangements from the given link
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actoring Quadratic Expressions. Factor each completely. 1) x. 2 − 7x − 18. 2) p. 2 − 5p − 14. 3) m. 2 − 9m + 8.
Answers
Completely factored expressions are:
(x - 9)(x + 2)(p - 7)(p + 2)(m - 1)(m - 8)How to evaluate each part of the question?1. x² - 7x - 18 can be factored as:
(x - 9)(x + 2)
Expand the expression using FOIL:
(x - 9)(x + 2) = x² + 2x - 9x - 18 = x² - 7x - 18
2. p² - 5p - 14 can be factored as:
(p - 7)(p + 2)
Expand the expression using FOIL:
(p - 7)(p + 2) = p² + 2p - 7p - 14 = p² - 5p - 14
3. m² - 9m + 8 can be factored as:
(m - 1)(m - 8)
Expand the expression using FOIL:
(m - 1)(m - 8) = m² - 8m - m + 8 = m² - 9m + 8
Therefore, the completely factored expressions are:
(x - 9)(x + 2)(p - 7)(p + 2)(m - 1)(m - 8)Learn more about factored expressions.
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Hurry help me please
Answers
Answer:
5
Step-by-step explanation:
Convert the element to fraction:
\(\frac{2}{1}\) / \(\frac{2}{5}\)
Switch the division to multipl:
2/1 * 2/5
Cross multiply:
2 is elimiated and 1 and 5 remain.
Answer is 1/5 which is 5.
Answer:
5
Step-by-step explanation:
2 ÷ 2/5
= 2 x 5/2
= 10/2
= 5
Find the values of the sine, cosine, and tangent for ZA
Answers
Answer:
(AB)²=(AC)²+(BC)²
(AB)²=(4)²+(3)²
(AB)²=16+9
(AB)²=25
\(sinA=\frac{3}{5}\\\\cosA=\frac{4}{5} \\\\tanA=\frac{3}{4}\)
hope it helps...
have a great day!! :)
Everlys’ school is located at the midpoint between her house and the library. Find the location of her school if her house is located at (8, 1) and the library is at (-2, -5).
Group of answer choices
(3, -2)
(5, 3)
(10, 6)
(6, -4)
Answers
Answer:
i think that the answer is 1.000
Step-by-step explanation: