Answer:
171 degrees
Step-by-step explanation:
40-sided polygon has an interior angle equal to:
(40 - 2) (180) /40 = 171 degrees
in the rectangle below, what is x?
Who is vladimir lenin?
Which of the following shows the correct value of 50
A. 4 < 50 < 5
B. 7 < 50< 8
C. 8 <50 < 9
D. 10 < 50 < 11
Answer:
None of the options is correct
Step-by-step explanation:
It is important to know that he expression a < x < b means that x is greater than a and less than b. So, for finding the correct value let's analyse each option.
A. 4 < 50 < 5
50 is greater than 4 but it is not less than 5, so, option A is incorrect.
B. 7 < 50 < 8
50 is greater than 7 but it is not less than 8, so, option B is incorrect.
C. 8 < 50 < 9
50 is greater than 8 but it is not less than 9, so, option C is incorrect.
D. 10 < 50 < 11
50 is greater than 10 but it is not less than 11, so, option D is incorrect.
Thus, none of the options is correct.
The correct inequality that should show the value of 50 is 49 < 50 < 51, but based on the provided options and context, all are incorrect. If choosing the closest correct answer, it would be 'C. 8 < 50 < 9', acknowledging that it is still incorrect because 50 is not less than 9. Hence, option C.
The student's question is about determining the correct inequality that shows the value of 50 within two consecutive integers. When comparing numbers, we need to find two consecutive integers between which the number 50 falls. The correct inequality that illustrates this is D. 10 < 50 < 11, as 50 is greater than 10 and less than 11. Considering context, this seems to be a typo, since 50 cannot be between 10 and 11. The correct answer should logically be none of the above, as 50 is actually between 49 and 51, making all the provided options incorrect. However, if the intention was to find which of the provided options is closest to being correct, then the answer would be C. 8 < 50 < 9, as 50 is greater than 8 but certainly not less than 9. It is important to note that this question involves an error in the provided options.
In America, a person uses about 100 gallons of water each day, which is equal to 1,600 water-filled drinking glasses. How many water-filled drinking glasses would 281 Americans fill in a weeks time?
a. 449,600 water-filled glasses
b. 28,100 water-filled glasses
c. 3,147,200 water-filled glasses
d. 196,700 water-filled glasses
Answer:
c. 3,147,200 water-filled glasses
Step-by-step explanation:
The amount of water consumed by an American per day= 100 gallons
So, the amount of water consumed by an American per week = 7×100 = 700 gallons
In 100 gallons of water 1,600 drinking glasses can be filled.
In 700 gallons of water 7×1,600= 11,200 drinking glasses can be filled.
The amount of water consumed by 281 American per week = 700×281 = 196,700 gallons
As in 700 gallons of water 11,200 glasses can be filled.
So, in 1 gallons of water [tex]\dfrac{11,200}{700}=16[/tex] glasses can be filled.
So, in 196,700 gallons of water [tex]16\times 196,700=3,147,200[/tex] glasses can be filled.
Choose one of the factors of x15 − 64. (2 points)
x^5 − 4
x^10 − 4x^5 + 16
x^10 − 4
x^15 + 8x + 16
We have been given the function [tex]x^{15}-64[/tex]
Convert this expression in difference of cubes form.
[tex]x^{15}-64\\=(x^5)^3-4^3[/tex]
Now, in order to find the factors, we can apply the difference of cubes form, which is given by
[tex]x^3-y^3=(x-y)(x^2+xy-y^2)[/tex]
On applying this formula, we get
[tex](x^5-4)(x^{10}+4x^5+16)[/tex]
Hence, the factors of the given expression are
[tex](x^5-4) \text{ and }(x^{10}+4x^5+16)[/tex]
Out of the given option, A is the correct option.
x^5 − 4 is the required factor.
The factors of the polynomial [tex]x^{15}-64[/tex] are [tex]x^{5}-4[/tex] and [tex]x^{10}+4x^{5}+16[/tex].
Given data:
The polynomial equation is represented as [tex]f(x)=x^{15}-64[/tex].
On simplifying the equation:
[tex]f(x)=[x^{5}]^{3}-4^{3}[/tex]
From the difference of cubes:
[tex]x^{3}-y^{3}=(x-y)(x^{2}+xy-y^{2})[/tex]
Substituting the values in the equation:
[tex][x^{5}]^{3}-4^{3}=(x^{5}-4)(x^{10}+4x^{5}+16)[/tex]
Hence, the factors of the equation is [tex]x^{5}-4[/tex].
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Segment BDSegment BD is a perpendicular bisector of segment ACsegment AC . AD=8x−15AD=8x−15 and DC=57DC=57 .
What is the value of x?
the Museum of Science in Boston displays a running total of the U.S. population. on may 11, 1993, the total was increasing at the rate of 1 person every 14 sec. the displayed population figure at 3:45 PM. that day was 257,313,431. assume that the relative growth rate is constant.
A) what is the relative growth rate per year (365 days)?
B) at this rate, what will the U.S population be at 3:45 Pm Boston tiem in May 11, 2001
The relative growth rate per year is approximately 22521.43 people per year. The U.S. population at 3:45 PM Boston time on May 11, 2001, will be approximately 275,333,002 people.
Explanation:The relative growth rate per year can be found by converting the rate of 1 person every 14 seconds to the rate per year. There are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day, so there are 60 * 60 * 24 = 86400 seconds in a day. There are 365 days in a year, so the rate per year is (1 person / 14 seconds) * (86400 seconds / 1 day) * (365 days / 1 year) = 22521.4286 people per year. Therefore, the relative growth rate per year is approximately 22521.43 people per year.
To determine the U.S. population at 3:45 PM Boston time on May 11, 2001, we need to calculate the number of seconds between May 11, 1993, and May 11, 2001, at 3:45 PM. There are 365 days in a year and 24 hours in a day, so there are 365 * 24 = 8760 hours in a year. Since May 11, 1993, to May 11, 2001, is 8 years, there are 8 * 8760 = 70080 hours between the two dates. There are 60 minutes in an hour and 60 seconds in a minute, so there are 60 * 60 = 3600 seconds in an hour. Therefore, there are 70080 * 3600 = 252288000 seconds between the two dates. The population increase rate is 1 person every 14 seconds, so the population increase during this time period is 252288000 / 14 = 18020571.43 people. Adding this to the initial population of 257,313,431 gives a total population of 257,313,431 + 18020571.43 = 275,333,002.43. Therefore, the U.S. population at 3:45 PM Boston time on May 11, 2001, will be approximately 275,333,002 people.
explain why you can use subtraction to solve a division problem.
Final answer:
Subtraction can be used to solve division problems as division can be thought of as repeated subtraction. In scientific notation, dividing numbers involves subtracting exponents, underscoring the relationship between subtraction and division, especially with exponent rules.
Explanation:
Subtraction can be used to solve a division problem because division essentially involves determining how many times a number (the divisor) can be subtracted from another number (the dividend) until nothing is left or a remainder is obtained. This concept is similar to repeated subtraction, and understanding this helps clarify why we subtract exponents when dividing numbers in scientific notation. For example, when dividing $10^6$ by $10^3$, you are essentially finding out how many times $10^3$ can be subtracted from $10^6$, which can be intuitively understood as reducing the exponent by 3 (hence $10^{(6-3)}$ or $10^3$).
When working with scientific notation, the operation of division is handled by dividing the coefficients (the numbers in front of the exponents), and then subtracting exponent of the divisor from the exponent of the dividend. This subtraction of exponents is based on the properties of powers where dividing two numbers with the same base results in a power with the base raised to the difference of the exponents. Division and subtraction are intimately related in mathematics, particularly in dealing with exponent rules which require a deep conceptual understanding, not just a mechanical execution of operations.
A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y=7-x^2 .
What are the dimensions of such a rectangle with the greatest possible area?
The rectangle with the maximum area that can be inscribed within the parabola y=7-x^2 has dimensions length 2√(7/3) and height 14/3.
Explanation:The problem is asking to find the dimensions of a rectangle inscribed within a parabola with maximum area. This is an example of an optimization problem in calculus. Here, the parabola given by y=7-x^2 suggests that the rectangle's corners on the x-axis lie at (-x, 0) and (x, 0). The corners on the parabola would be located at (-x, 7-x^2) and (x, 7-x^2). The dimensions of the rectangle would be 2x for the length (base) and 7-x^2 for the height.
For the maximum area, we need to take the derivative of the area function A = length*width = (2x)*(7-x^2) and set it equal to zero, thus defining the critical points.
The derivative of A is given by A' = 14 - 6x^2. Setting A' equal to zero gives: x = √(14/6) which simplifies to x = √(7/3).
Finally, as we are looking for the dimensions of the rectangle, the length (base) is 2*x = 2√(7/3) and the height is given by y = 7 - x^2 = 7 - (7/3) = 14/3.
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Calculate dy/dx
You need not expand your answer.
y=3x^2-9x+13/2x+4 ...?
A farmer sold 54 pumpkins the first weekend of a fall festival and 42 pumpkins the second weekend. Which expression uses the distributive property to show equivalent expressions for this situation?
Answer:
D.) 54 + 42 = 6(9+7)
Step-by-step explanation:
This shows the distributive property as, when the 6 is distributed to the 9 you get 54 (pumpkins), and when distributed to the 7 you get 42 (pumpkins).
what is 100 x 100 ...............
The product of the given multiplication is 10000.
What is multiplication?Multiplication is when you take one number and add it together a number of times.
Example: 5 multiplied by 4 = 5 + 5 + 5 + 5 = 20.
Given that, multiply 100 x 100,
100 x 100 = 10000
Hence, the product of the given multiplication is 10000.
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15 students ask to visit a college admissions counselor. Each visit includes one student. In how many ways can 10 time slots be assigned? ...?
Which of the following points does not lie on the line whose equation is x+ y = 7?
(-10, 17)
(13/3, 8/3)
(-1, -6)
There are 17 goats in the barn 8 goats goes outside how many goats are still in the barn
Total number of goats still in Barn is 9 goats
Given that;
Total number of goats in Barn = 17
Number of goat go outside = 8
Find:
Total number of goats still in Barn
Computation:
Total number of goats still in Barn = Total number of goats in Barn - Number of goat go outside
Total number of goats still in Barn = 17 - 8
Total number of goats still in Barn = 9
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Only $1.87 to buy a present for Jim. Her Jim. Many a happy hour she had spent planning for something nice for him. Something fine and rare and sterling—something just a little bit near to being worthy of the honor of being owned by Jim.What inferences about Della can be made based on this excerpt Check all that apply
Della does not have much money to spend on Jim’s gift.
Della wants to buy Jim a watch chain for his watch.
Della loves her husband, Jim, very much
Della wants to buy Jim a really nice gift
Della will need to sell he
Answer:
The following are correct inferences:
1. Della does not have much money to spend on Jim’s gift.
Della is financially poor and does not have enough to gift Jim. This can be understood from the line "Only $1.87 to buy a present for Jim."
2. Della loves her husband, Jim, very much.
Della has been saving for months to gift her husband something rare and unique that his husband is worth for.
"Something fine and rare and sterling—something just a little bit near to being worthy of the honor of being owned by Jim." these lines shows her love and affection for her husband.
3. Della wants to buy Jim a really nice gift.
"Many a happy hour she had spent planning for something nice for him. Something fine and rare and sterling—" These lines show that Della needs to buy something for Jim.
(x-2)(x+2) Find The Product?
A department store is having a 30% off sale for all clothing items. what is the discount price of a pair of blue jeans that normally cost $39.99?
Calculate the average rate of change for the given graph from x = –2 to x = 0 and select the correct answer below.
A.) -2
B.) 2
C.) 3
D.) 6
Answer:
3
Step-by-step explanation:
what is the solution to this inequality?
x/4 < 12
A. x < 48
B. x < 3
C. x > 3
D. x > 48
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A standard showerhead in Marty's house dispenses 7 gallons of water per minute. Marty changed this showerhead to an energy-saving one. The equation shows the amount of water dispensed, y, as a function of the number of minutes, x, for the new showerhead.
y = 3x
How much water does Marty save each day with the change in showerheads if he uses the shower for 8 minutes each day?
4 gallons
12 gallons
32 gallons
53 gallons
Answer:
the answer would be 32
hope this helps :)
When solving a system of equations, how do you determine which method to use? (substitution, elimination, graphing)
Abdul is making a map of his neighborhood. He knows the following information:
His home, the middle school, and high school are all on the same street.
His home, the elementary school, and his friend's house are on the same street.
The distance between his home and the middle school is 3 miles.
The distance between his high school and the middle school is 6 miles.
The street between the middle school and elementary school is parallel to the street between his friend's home and the high school.
What theorem can Abdul use to determine the remaining distances for his map?
Pythagorean Theorem
Midsegment Theorem
Triangle Proportionality Theorem
Side-Angle-Side Similarity Theorem
Answer:
Triangle Proportionality Theorem
Step-by-step explanation:
Just took the test xD
Abdul can use the Pythagorean Theorem to calculate the straight-line distances on his map, utilizing the formula a² + b² = c² for right triangles created by the intersections of his neighborhood's streets.
To determine the remaining distances for his map, Abdul can apply the Pythagorean Theorem. The streets in question form right angles at their intersections, as implied by the parallel streets mentioned. Thus, if Abdul needs to find the distance between two points that form a right angle with another point (essentially creating a right triangle), he can use the formula a² + b² = c², where a and b are the legs (sides forming the right angle) of the triangle and c is the hypotenuse (the side opposite the right angle).
For example, if Abdul wants to find the straight-line distance (hypotenuse) between his home and the high school, and he knows the distance to the middle school (3 miles) and the distance from the middle school to the high school (6 miles), he can use the Pythagorean Theorem to calculate this. Assuming his home, the middle school, and the high school form a right triangle, the formula becomes: 3² + 6² = c², which after calculations gives c =
√(3² + 6²).
Therefore, the correct answer is pythagoras theorm.
The diagonals of a square are _____.
A. perpendicular
B. never congruent
C. parallel
D. sometimes equal
The diagonals of a square are perpendicular to each other. Thus, the correct option is A.
What is a square?It is a polygon with four sides. The total interior angle is 360 degrees. A square's opposite sides are parallel and equal, and each angle is 90 degrees. Its diagonals are all the same length and intersect in the center.
If the angle between the diagonals of the quadrilateral is not equal to the right angle, then the quadrilateral is a rectangle, parallelogram, or trapezoid.
If the angle between the diagonals of the quadrilateral is equal to the right angle, then the quadrilateral is a rhombus and square.
The diagonal of the square intersects at the right angle. Then the diagonals of a square are perpendicular to each other.
Thus, the correct option is A.
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A popular video game claims that the average time needed to reach level 10 Paladin is 3 hours with a standard deviation of 0.4 hours. James thinks that he and his four friends are more skilled than the average gamer because it took them an average of only 2.5 hours. Which of the following is the most restrictive level that would validate his claim?
a. 1%
b. 2.5%
c. 5%
d. 10%
Answer:
a
Step-by-step explanation:
1%
Final answer:
The z-score calculation for James and his friends' gaming performance indicates that their claim would be validated at even the most restrictive level of significance, which is 1%.
Explanation:
To determine which level of significance validates James and his friends' claim of being more skilled gamers, we use the concept of hypothesis testing in statistics. Given that the average time to reach level 10 Paladin is 3 hours with a standard deviation of 0.4 hours, and James and his friends have an average of 2.5 hours, we can calculate the z-score to see how many standard deviations their average is from the population mean.
The formula for the z-score is: Z = (X - μ) / (σ / √n), where X is the sample mean, μ is the population mean, σ is the standard deviation, and n is the sample size. Plugging in the values, we get:
Z = (2.5 - 3) / (0.4 / √5) = -6.25
This z-score is significantly below the mean. Looking at the z-table, a z-score of -6.25 falls well beyond the typical critical values for common levels of significance (1%, 2.5%, 5%, and 10%). Thus, James's claim would be validated at even the most restrictive level.
Therefore, the answer is:
a. 1%
what is the square root of 8k=k
Business: the charge on isongs is $4.50 per song. for his birthday, jason is allowed to spend at most $50 worth of music. write the inequality that describes how many songs he can buy; then solve the equation
In a scatter plot or diagram, what is it called when all the points lie approximately along a straight line?
y=3(1.2)x growth or decay
Krystal bought a refrigerator from a rental center for $1,050. She makes 16 monthly payments of $112.75 with her credit card. The rental center charges $1.25 for every payment made with a credit card. What is the total cost of the refrigerator?
$1,050
$1,804
$1,824
$2,052
Description
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Let
n--------> number of monthly payments
x-------> amount of monthly payments with Kristal's credit card
y-------> charges for every payment made with a credit card
T-------> total cost of the refrigerator
we know that
[tex] n=16\\x=\$112.75\\ y=\$1.25\\[/tex]
the total cost of the refrigerator is equal to
[tex] T=n(x+y) [/tex]
substitute the values in the formula
[tex] T=16*(112.75+1.25) [/tex]
[tex] T=16*114 [/tex]
[tex] T=\$1,824 [/tex]
therefore
the answer is
the total cost of the refrigerator is equal to [tex] \$1,824 [/tex]