1. Which of the following is irrational?
A)0.4
B)3. 125 bar
C) 0.2496
D ) 3.142968
Answers
Answer:
A hope this helps
Step-by-step explanation:
Answer:
A...
Step-by-step explanation:
hope this helps you
Related Questions
what is the probability that 5 card hand contains a four-of-a-kind, where the four-of-a-kind rank is a face card?
Answers
There is a slight possibility of 0.000240 that 5 card hand contains a four-of-a-kind, where the four-of-a-kind rank is a face card.
Total possible outcomes=⁵²C₅
= 2598960
P( 4-of-a-kind) = ¹³C₁ * ⁴C₄
= 13
P( choosing one card from the rest of the deck) = ⁴⁸C₁
=48
P( 4-of-a-kind card with one different card)
= desired outcome / total number of outcomes.
= (13* 48) / 2598960
= 624/2598960
= 0.000240
Therefore, we get that the probability is 0.0240% .
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If the reaction of h2 and o2 to produce water vapour releases 285.4 kj of energy to the surroundings;
write four different methods that can be used to communicate this information
Answers
The reaction of hydrogen (H2) and oxygen (O2) to produce water vapor releases 285.4 kJ of energy to the surroundings, indicating an exothermic reaction.
The release of 285.4 kJ of energy to the surroundings during the reaction of hydrogen and oxygen to produce water vapor signifies that the reaction is exothermic.
Exothermic reactions are characterized by the release of heat energy to the surrounding environment. In this case, the reaction between H2 and O2 results in the formation of water vapor, and during this process, energy is given off in the form of heat. The magnitude of energy released, 285.4 kJ, indicates the amount of heat produced as a result of the reaction. This information is crucial for understanding the thermodynamics and energy changes involved in the chemical reaction between hydrogen and oxygen.
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Complete the inequality.
1/4 _ 3/16
>
<
=
Answers
Answer:
1/4 > 3/16
Step-by-step explanation:
1/4 = 4/16
4/16 > 3/16
Therefor
1/4 > 3/16
(Discrete mathematics), please help will upvote thanks! Please show step-by-step!
This problem has you prove that the function f : N → Z such that f(n) = ((−1)^n(2n−1)+1) / 4 is a bijection.
a) Prove that f is onto.
b) Prove that f is one-to-one.
Answers
a) To prove that the function f : N → Z is onto, we need to show that for every integer z, there exists a natural number n such that f(n) = z.
Let's consider an arbitrary integer z. We can express z as z = 4k + r, where k is an integer and r is the remainder when z is divided by 4. Now we need to find a natural number n such that f(n) = z.
For r = 0, let n = 2k. In this case, f(n) = ((-1)^(2k)(2(2k)-1)+1) / 4 = (1)(4k-1+1) / 4 = (4k) / 4 = k = z.
For r = 1, let n = 2k + 1. In this case, f(n) = ((-1)^(2k+1)(2(2k+1)-1)+1) / 4 = (-1)(4k+1-1+1) / 4 = (-(4k+1)) / 4 = -k-1 = z.
For r = 2, let n = 2k + 1. In this case, f(n) = ((-1)^(2k+1)(2(2k+1)-1)+1) / 4 = (-1)(4k+3-1+1) / 4 = (-(4k+3)) / 4 = -k-1 = z.
For r = 3, let n = 2k + 1. In this case, f(n) = ((-1)^(2k+1)(2(2k+1)-1)+1) / 4 = (-1)(4k+5-1+1) / 4 = (-(4k+5)) / 4 = -k-2 = z.
In each case, we have found a natural number n such that f(n) = z. Therefore, f is onto.
b) To prove that the function f : N → Z is one-to-one, we need to show that for any two natural numbers n1 and n2, if f(n1) = f(n2), then n1 = n2.
Let's assume that f(n1) = f(n2). This means that ((-1)^n1(2n1−1)+1) / 4 = ((-1)^n2(2n2−1)+1) / 4.
Multiplying both sides by 4, we get (-1)^n1(2n1−1)+1 = (-1)^n2(2n2−1)+1.
Since the right-hand side of the equation is the same, we can conclude that (-1)^n1(2n1−1) = (-1)^n2(2n2−1).
From this equation, we can see that (-1)^n1 and (-1)^n2 have the same parity (either both even or both odd), and (2n1−1) and (2n2−1) have the same parity as well. Considering the possible combinations of parity for (-1)^n and (2n−1), we find that there are four cases: (even, even), (even, odd), (odd, even), and (odd, odd).
In each case, we can see that n1 = n2, as the parities of (-1)^n1 and (-1)^n2 determine the parities of (2n1−1) and (2n
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A farmer has 120 bushels of wheat to sell at his roadhouse stand. He sells an average of 16 3/5 bushels each day. Represent the total change in the number of bushels he has for sale after 7 days
Answers
Answer:
25.5
Step-by-step explanation:
He sells 15 and 3/4 bushels each day.
After 6 days he has sold
15 and 3/4 * 6
Change 15 and 3/4 to an improper fraction
15 and 3/4 = 63/4
Thus he sold 63/4 * 6 = 378/ 4 bushels
= 94.5
As a result, the farmer would have only 120 - 94.5 = 25.5 bushels for sale
I'm guessing the change in the number of bushels for sale after 6 days would be 94.5
The table represents what type of function
Answers
Answer
The function is x3
Explanation - y by x
What does each letter mean for the slope intercept form y = mx + b ? y is the ____________________ _________________ m is the ____________________ x is the ___________________ _______________ b is where __________________ _____ ___________
Answers
the endpoints of the diameter of a circle have the coordinates (3,8) and(9,16) what are the coordinates of the center
Answers
C = ( (xo+x1)/2 , (yo+y1)/2)
Where,
xo = 3 and x1 = 9
yo = 8 and y1 = 16
Then us stay with"
C = ( (3+9)/2 , (8+16)/2)
C = ( 12/2 , 24/2)
C = ( 6 , 12 )
c) Write the equation you would use to estimate the percentage of teens who use Other Drugs from the percentage who have used Marijuana.
d) Explain in context what the slope of this line means.
Answers
C) the equation can be written as:y = mx + b. D) The slope can be interpreted as a measure of the association between the use of marijuana and other drugs.
c) Write the equation you would use to estimate the percentage of teens who use Other Drugs from the percentage who have used Marijuana.The equation to estimate the percentage of teens who use Other Drugs from the percentage who have used Marijuana is given by the formula:y = mx + bwhere y represents the estimated percentage of teens who use Other Drugs and x represents the percentage of teens who have used Marijuana.
The slope, m, represents the proportion of teens who have used other drugs after using marijuana, and b represents the percentage of teens who use Other Drugs when the percentage who have used Marijuana is 0.
Therefore, the equation can be written as:y = mx + b
Where x represents the percentage of teens who have used Marijuana, m represents the proportion of teens who have used other drugs after using marijuana, and b represents the percentage of teens who use Other Drugs when the percentage who have used Marijuana is 0.
d) Explain in context what the slope of this line means.The slope of this line represents the proportion of teens who have used other drugs after using marijuana. That is, if a certain percentage of teens have used marijuana, the slope of the line estimates the percentage of teens who have used other drugs.
In other words, the slope indicates how much more likely teens are to use other drugs after using marijuana. A positive slope would indicate that more teens use other drugs after using marijuana, while a negative slope would indicate that fewer teens use other drugs after using marijuana.
The slope can be interpreted as a measure of the association between the use of marijuana and other drugs.
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11. a=1 and b=0 V. a=2 and b=1 Consider the linear DEY= X^B Y' = x²y+xy²/ x+y² . Which value of a and b, the given DE will be homogenous? I. a=0 and b=1 ; II. a=1 and b=0 III. a=1 and b=2; IV. a=1 and b=1 V. a=2 and b=1
Answers
To determine which values of a and b make the given linear differential equation homogeneous, we need to check if the equation satisfies the condition for homogeneity.
A linear differential equation of the form Y = x^b * y' = F(x, y) is homogeneous if and only if F(tx, ty) = t^a * F(x, y), where t is a constant.
Substituting the given equation into the homogeneity condition, we have:
(x^b)(tx)^2 * (ty) + (tx)(ty)^2 / (tx + (ty)^2) = t^a * ((x^b)(y) + (x)(y^2) / (x + (y)^2))
Simplifying the equation, we get:
t^(2+b) * x^(2+b) * t * y + t^(1+b) * x * t^2 * y^2 / (t * x + t^2 * y^2) = t^a * (x^b * y + x * y^2 / (x + y^2))
Now, we compare the powers of t and x on both sides of the equation.
From the terms involving t, we have 2+b = a and 1+b = a.
From the terms involving x, we have 2+b = b and 1 = b.
Solving these equations, we find that the only values of a and b that satisfy the conditions are:
a = 1 and b = 0.
Therefore, the correct choice is II. a = 1 and b = 0.
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Help I’m failing math
Answers
Answer:
can you send a more clear photo its quite blurry
a random sample of 25 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years. we want to determine if the average age of all the students at the university is significantly more than 24. assume the distribution of the population of ages is normal. the p-value is between
Answers
The p-value being between 0.01 and 0.05 indicates that we reject the null hypothesis and conclude that the average age of all the students at the university is significantly more than 24 at the 5% level of significance.
In hypothesis testing, the p-value is the probability of observing a test statistic as extreme as, or more extreme than, the actual sample data, assuming the null hypothesis is true. If the p-value is less than or equal to the level of significance (usually 0.05), we reject the null hypothesis and conclude that the alternative hypothesis is true. In this case, the null hypothesis is that the average age of all the students at the university is not significantly more than 24, and the alternative hypothesis is that it is significantly more than 24.
The fact that the p-value is between 0.01 and 0.05 indicates that the sample data provides strong evidence against the null hypothesis and in favor of the alternative hypothesis. Therefore, we can conclude that the average age of all the students at the university is significantly more than 24 at the 5% level of significance.
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The diagram shows a convex polygon.
What is the sum of the interior angle measures of this polygon?
Answers
The sum of the interior angle measures of the given polygon will be equal to 360°.
What is a Polygon?A polygon is described in geometry as a compact, two-dimensional shape having three or more straight lines.
Poly, which means "many," and gon, which means "angle," make up the Greek word "Polygon." Polygons of several kinds can be seen all around us.
As per the given information in the question,
Use the formula of the sum of an interior angle of the polygon,
180(n - 2) (i)
Here, n is the number of sides.
As per the given figure, n = 4
Put n = 4 in equation (i)
180 (4 - 2)
180 (2)
= 360°
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how do I write a function for area A (s)there are 36 tiles with lengths from 2-6 inches
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(01.01 MC)Which number line shows the solution to 6 + (−6)? A number line is shown from negative 12 to 0 to positive 12. There are increments of 2 on either side of the number line. An arrow pointing from 0 to negative 6 is shown. Above this, another arrow pointing from negative 6 to negative 12 is shown. A number line is shown from negative 12 to 0 to positive 12. There are increments of 2 on either side of the number line. An arrow pointing from 0 to 6 is shown. Above this, another arrow pointing from 6 to 0 is shown. A number line is shown from negative 12 to 0 to positive 12. There are increments of 2 on either side of the number line. An arrow pointing from 0 to negative 6 is shown. Above this, another arrow pointing from negative 6 to positive 6 is shown. A number line is shown from negative 12 to 0 to positive 12. There are increments of 2 on either side of the number line. An arrow pointing from 0 to 6 is shown. Above this, another arrow pointing from 6 to 12 is shown. PLS HELP ASAP !!!!!! WILL GIVE BRAINLIEST!!!!
Answers
Answer:
the first one
Step-by-step explanation: it worked for me i passed it
help meeeeeeeeeeeeeeeeeeee pleaseee rnnnn rn!!!!
Answers
By solving a quadratic equation we will find that the dimensions are:
length = 7.62 meters.
width = 2.62 meters
How to find the rectangle's dimensions?We know that for a rectangle of length X and width Y the area is:
A = X*Y
And in this case, the area is 20 square meters, then we can write:
20 = X*Y
And we know that the length is 5 meters larger than the width, then:
X = Y + 5
Replacing that in the area equation we get:
20 = (Y + 5)*y
Then we get:
20 = Y^2 + 5*Y
Y^2 + 5Y - 20 = 0
So we need to solve a quadratic equation the solutions are:
Y = (-5 ± √( 5² - 4*1*(-20)) /(2*1)
Y = (-5 ± 10.24)/2
We only care for the positive solution, which is:
Y = (-5 + 10.24)/2 = 5.24/2 = 2.62
So the width is 2.62 meters and the length is 7.62 meters.
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5. Find the selling Price of an item that originally cost a store $70 was marked up20% and then after no selling for 6 months was discounted 10%?
Answers
Answer:
$75.6
Explanation:
If the original cost was $70 and it was marked up 20%, the price after this is calculated as:
$70 + $70(0.2) = $70 + $14 = $84
Where $70(0.2) = $14 is the amount added to the original when it is marked up 20%.
Then, it was discounted 10%, we get that the selling price is
$84 - $84(0.1) = $84 - $8.4 = $75.6
Where $84(0.1) = $8.4 is the discount made on the initial price.
Therefore, the answer is $75.6
it snowed 14 cm in 5 hours. what is the unit rate
Answers
Answer:
2.8cm per 5 hours
Step-by-step explanation:
Determine the slow & y-intercept for the line shown. Then write the equation . If you hurry I’ll mark brainliest
Answers
Answer:
y = 3x + 4
Step-by-step explanation:
slope is 9/3 simplified to 3
y intercept is 4
how do you know if the solutions to a quadratic equations are inside, outside, on, inside and on, or outside and on the parabola? with the different equality signs?
Answers
Answer:
Option (1)
Step-by-step explanation:
Given quadratic equation in this question is,
y < -x²+ 4x + 5
Now we will convert this standard quadratic equation into vertex form,
y < -(x² - 4x) + 5
y < -[x² - 2(2)x + 2²] + 5
y < -(x - 2)²+ 5
This equation is in the form of y < a(x - h)² + k
where (h, k) is the vertex of the parabola.
Therefore, y < -(x - 2)²+ 5 will show the parabola with properties as,
1). Parabola having vertex at (2, 5).
2). Coefficient 'a' is negative, so parabola will open downwards.
3). In the inequality notation of less than, (sign < ) will show the solution area inside the parabola.
[If an inequality has a sign of greater than, solution area will be outside the parabola.]
Therefore, Option (1) will be the answer.
If the length of the cushion measures 12 in, the width measures 10 in, and the height measures 3 in, how much fabric does Greg need to cover the cushion? A. 360 sq in B. 186 sq in C. 372 sq in D. 720 sq in
Answers
If the length of the cushion measures 12 in, the width measures 10 in, and the height measures 3 in, 372 sq in. fabric Greg needed to cover the cushion. The correct option is C, 372 sq in.
To determine the amount of fabric needed to cover the cushion, we need to calculate the surface area of the cushion. The surface area of a rectangular cushion is given by the formula: 2lw + 2lh + 2wh, where l is the length, w is the width, and h is the height of the cushion.
Plugging in the given measurements, we get:
2(12 x 10) + 2(12 x 3) + 2(10 x 3) = 240 + 72 + 60 = 372 sq in.
Therefore, Greg needs 372 square inches of fabric to cover the cushion.
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expocied to be dos. Room aftendant are aHocated 30 minutes to clean each foocr. Room niterdants work A hourt per day at a rate of 515 hour, ADPt is expected to be 51 eo What would the labotyr cost percentage be for next Friday assurning everythinc ktnys the sarne?
a. 0.05%
b. 5.00%
c. 20.00%
d. 0.20%
Answers
The labor cost percentage for next Friday at Fawlty Towers would be approximately 0.63%, which is closest to the option a. 0.05%.
To calculate the labor cost percentage for next Friday at the Fawlty Towers, we need to consider the number of rooms, the time required to clean each room, the number of working hours, the labor rate, and the occupancy rate. Here are the steps to determine the labor cost percentage:
Calculate the number of rooms to be cleaned. If the hotel has 1000 rooms and the occupancy rate for next Friday is 80%, then the number of occupied rooms would be 1000 * 0.8 = 800 rooms.
Calculate the total time required to clean the rooms. Since each room attendant is allocated 30 minutes per room, the total time required would be 800 rooms * 30 minutes = 24,000 minutes.
Convert the total cleaning time to hours. Since there are 60 minutes in an hour, the total cleaning time would be 24,000 minutes / 60 = 400 hours.
Calculate the total labor cost. Each room attendant works 8 hours per day, so for 400 hours, the hotel would require 400 hours / 8 hours = 50 room attendants. Considering their hourly rate of $15, the total labor cost would be 50 room attendants * $15/hour = $750.
Calculate the total revenue. The Average Daily Rate (ADR) is expected to be $150, and with an occupancy rate of 80%, the total revenue would be 800 rooms * $150/room = $120,000.
Calculate the labor cost percentage. Divide the total labor cost ($750) by the total revenue ($120,000) and multiply by 100 to get the percentage: ($750 / $120,000) * 100 = 0.625%.
Therefore, the labor cost percentage for next Friday at Fawlty Towers would be approximately 0.63%, which is closest to the option 0.05%.
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The Fawlty Towers is a Nuxury 1000 room hotel catering to business executives. The occupancy for nad Friday is expected to be 80% Room attendants are allocated 30 minutes to clean each room Room attendants work 8 hours per day at a rate of $15/hour. ADR is expected to be $150 What would the labour cost percentage be for next Friday assuming everything stays the same?
a. 0.05%
b. 5.00%
c. 20.00%
d. 0.20%
please help me !!!!!
Answers
Explanation: the slope intercept form is y=mx+ b, then you can find two perfect points on the graph and use rise over run to find the “mx” portion. Then identify the y intercept which is the “b” portion of the slope.
PLEASE I NEED SOMEONE
ILL GIVE BRAINLIEST
When you add a positive number and a negative number, how can you tell whether the sum will be positive or negative?
A.
The sum will always be negative.
B.
The sum will always be positive.
C.
The sum will have the sign of the addend with the lesser absolute value.
D.
The sum will have the sign of the addend with the greater absolute value.
PICK RIGHT ONE PLEASE
THANKSSSSSS
Answers
Answer:
D
Step-by-step explanation:
please give brainliest!
for example -3 + 6 is 3. --positive sign
-9+8 is -1 --negative sign
What is the area of the trapezoid?
80 ft 2
60 ft 2
24 ft 2
64 ft 2
Answers
Answer: The answer would be A 64ft
Step-by-step explanation:
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-Hunter Cross
What is the slope of a line that passes through the two points (12, -18) and (11,12)
Answers
12 - 11 = 1
-30 divided by 1 would still be -30.
You have $2,368.28. How many times greater is the number 2 on the left than the number 2 on the right?
Answers
Answer:
10000 greater
Step-by-step explanation:
2 on the left = 2000 dollars
2 on the right = 0.20 dollars
2000 ÷ 0.2 = 10000
plz help look at the pic below
Answers
Answer:
You can use the exponential rule where
\((n^x)^y=n^{xy}\)
Therefore,
\((a^3)^{-2}=a^{3*(-2)}=a^{-6}\)
\(\\ \rm\leadsto (a^3)^{-2}\)
(a^m)^n=a^mn\(\\ \rm\leadsto a^{-6}\)
\(\\ \rm\leadsto \dfrac{1}{a^6}\)
If the simple interest on $800 for 3 years is $54, what is the rate of interest per annum? 1 point
Answers
If the simple interest on $800 for 3 years is $54, then the rate of interest per annum is 2.25%.
To find the rate of interest per annum, follow these steps:
To find the rate of interest per annum we use the formula Simple Interest = (P * R * T) / 100, where P is the principal, R is the rate of interest and T is the time period.Substituting P= 800, T= 3, and simple interest= 54 in the formula, we get 54 = (800 * R * 3) / 100 ⇒54 = (24 * R) ⇒R=54/24 ⇒R= 2.25Therefore, the rate of interest per annum is 2.25%.
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a shipment of 13 televisions sets contains 6 defective sets. a hotel purchases 6 of these televisions sets. what is the probability that the hotel receives at least one of the defective sets?
Answers
The probability that the hotel receives at least one of the defective sets is 99.59%
To find the probability that the hotel receives at least one defective set, we can use the concept of complementary probability.
The probability of the hotel receiving at least one defective set is equal to 1 minus the probability of the hotel receiving no defective sets.
The probability of the hotel receiving no defective sets can be calculated as the ratio of the number of ways to choose 6 non-defective sets out of the total number of ways to choose any 6 sets.
The total number of ways to choose 6 sets from the shipment of 13 sets is given by the binomial coefficient C(13, 6).
The number of ways to choose 6 non-defective sets from the remaining 13 - 6 = 7 non-defective sets is given by the binomial coefficient C(7, 6).
Therefore, the probability of the hotel receiving no defective sets is:
P(no defective sets) = C(7, 6) / C(13, 6)
To find the probability of receiving at least one defective set, we subtract this probability from 1:
P(at least one defective set) = 1 - P(no defective sets)
Calculating the values:
C(7, 6) = 7
C(13, 6) = 1716
P(no defective sets) = 7 / 1716
P(at least one defective set) = 1 - 7 / 1716
Therefore, the probability that the hotel receives at least one defective set is approximately:
P(at least one defective set) ≈ 1 - 0.0041 ≈ 0.9959 or 99.59%
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