The length and width of rectangle is 10 feet and 4.5 feet.
This problem is related to the area and perimeter of plane figures. We have to find the dimensions of the rectangle using the data given.
Given, the length is 1 feet more than twice the width.
Let the width be a feet.
So, length = (2a+1) feet
Now according to question,
\((2a+1)(a)=45\\\)
⇒ \(2a^{2} +a-45=0\)
On solving the above quadratic equation we get a=4.5 feet.
So, length = 10 feet.
The dimension of rectangle is 10 feet × 4.5 feet.
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the first part of the problem asks them to calculate the work done on the gas when the gas goes from the initial state to the final state shown. here is part of their dialogue: nora: the gas is compressed because the volume decreases. that means that there is work done on the gas, and the work is positive. bob: ok. that's right because we're using the first law with q w. we need to use that area thing to find the work. nora: yeah. we want the area under the line between the dots. bob: that line shows the process, right? nora: yup, that's the one. so the area is one-half times base times height. it's the area of that triangle. bob: but you have to add the area of that skinny rectangle below it, don't you? nora: i don't think so. that bottom dot for the final state tells you where the bottom of the area is. bob: why don't we ever agree? tell you what. we'll each try our own way and let webassign tell us who's right. nora: hmmm... i hope i get the big, green check mark!
To determine how much effort the gas undergoes as it changes from its original condition to its final one, Nora and Bob utilize the area underneath the line separating the two states and the first rule of thermodynamics.
When a gas changes from its initial condition to its final state, Nora and Bob explain how to compute the work that is done. They talk about compressing gas, thus something is being done to the gas.
You suggest using the area under the line separating the final and initial states to calculate the work done as well as the application of the first equation of thermodynamics, q=w.
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8. Identify the mapping diagram that represents the relation and determine whether the relation is
a function.
(-5,-4), (-1,5) (-5,3),(7,8)
Answer:
Well, you didn't give a picture of the available mapping diagrams, so I can't tell you that. However, I CAN tell you that the relation is not a function.
Step-by-step explanation:
A function occurs when each input only has one output. For example if the input is 5, it can only give 1 y-value out. It cannot give 2,3,4...etc values. This relation is not a function because -5 maps to both -4 and 3. That's one input to two outputs, which breaks the rules of a function.
the midpoint of the coordinates (13,15) and (12,8) is ________
Answer:
\( \boxed{ \bold{ \huge{\boxed{ \sf{(12.5 \: , \: 11.5)}}}}}\)
Step-by-step explanation:
Let the points be A and B
Let A ( 13 , 15 ) be x₁ , y₁ and B ( 12 ,8 ) be x₂ , y₂
Finding the midpoint
\( \bold{ \boxed{ \sf{midpoint \: = (\: \frac{x1 + x2}{2} , \: \frac{y1 + y2}{2}) }}}\)
\(\dashrightarrow{ \sf{ (\frac{13 + 12}{2} , \: \frac{15 + 8}{2} )}}\)
\( \dashrightarrow {\sf {(\frac{25}{2} \: , \: \frac{23}{2} )}}\)
\( \dashrightarrow{ \sf{(12.5 \: , \: 11.5)}}\)
Hope I helped!
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You are making an initial deposit of $1000 in an account that yields 5% interest quarterly (four times a year).
Following the pattern given above, find your year-end balance. (Show calculations for all four quarters and round to the nearest
penny) 15 pts
Answer: The interest rate per quarter is 5%/4 = 1.25%.
At the end of the first quarter, the balance is:
$1000 + $1000(1.25%) = $1000 + $12.50 = $1012.50
At the end of the second quarter, the balance is:
$1012.50 + $1012.50(1.25%) = $1012.50 + $12.66 = $1025.16
At the end of the third quarter, the balance is:
$1025.16 + $1025.16(1.25%) = $1025.16 + $12.82 = $1037.98
At the end of the fourth quarter, the balance is:
$1037.98 + $1037.98(1.25%) = $1037.98 + $13.00 = $1050.98
Therefore, the year-end balance is $1050.98 (rounded to the nearest penny).
Step-by-step explanation:
You give a test to 100 students and determine the standard deviation of the scores. After grading the test, you realize that the 10 students with the highest scores did exceptionally well. You decide to award these 10 students a bonus of 5 more points each. The standard deviation of the new score distribution will be _______________________(less than, greater than or the same as) that of the original score distribution
Answer:
greater than
Step-by-step explanation:
The standard deviation of a distribution σ = \(\sqrt{sum(x - mean)^2/ n}\)
where x is the score of each student
Adding 5 to 10 student scores would be = x+5 - mean
increasing the scores of the 10 students by 5, which in turn increases the standard deviation of the distribution.
Find tα/2 for n = 18 and a 99% confidence interval.
The value of tα/2 of the t-test is 2.898
How to determine tα/2?A t-test is a statistical test that is used to compare the means of two groups. tα/2 refers to the t critical value from the t-distribution table that corresponds to α/2
Given: n = 18 and a 99% confidence interval
We have to find the critical t value for 99% confidence level and sample size of 18
Degrees of freedom = n - 1 = 17
α = 1 - 0.99 = 0.01
α/2 = 0.01/2 = 0.005
In the t table (check the attached image), we have to check the value against the column 0.005 and for 17 degrees of freedom.
The value obtained from the table is 2.898
Therefore, tα/2 = 2.898
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WHY CAN'T ANYONE HELP ME PLEASE?? The Pool Fun Company has learned that, by pricing a newly released Fun Noodle at $3, sales will reach 8000 Fun Noodles per day during the summer. Raising the price to $6 will cause the sales to fall to 5000 Fun Noodles per day. a. Assume that the relationship between sales price, x, and number of Fun Noodles sold, y, is linear. Write an equation in slope-intercept form describing this relationship. Use ordered pairs of the form (sales price, number sold).
Answer:
y = -1000x +11000
Step-by-step explanation:
Given:
(x, y) = (sales price, number sold) = (3, 8000), (6, 5000)
Find:
slope-intercept equation for a line through these points
Solution:
When given two points, it often works well to start with the 2-point form of the equation for a line.
y = (y2 -y1)/(x2 -x1)(x -x1) +y1
Filling in the given points, you have ...
y = (5000 -8000)/(6 -3)/(x -3) +8000
y = (-3000/3)(x -3) +8000
y = -1000x +3000 +8000 . . . . eliminate parentheses
y = -1000x +11000 . . . . the desired equation
Interest compounded semi annually is compounded four times a year true or false
Answer:
The given statement is False. When the interest is compounded half yearly the number of conversion periods will be two because a year comprises 12 months and has two periods of six months each.
Step-by-step explanation:
if it helped you please mark me a brainliest :))
Help help please !!!!!! Thank u ❤️
Answer:
Middle bar
Step-by-step explanation:
6 + 4 = 10
10 + 5 = 15
I have to follow this direction to get the answer. I'm totally stuck
The simplified trigonometric expression is given as follows:
\(-sin{\theta}\tan{\theta}(1 - \csc{\theta})\)
How to simplify the given trigonometric expression?The expression is given by:
\(\frac{\cos{\theta}}{1 + \csc{\theta}} \times \frac{1 - \csc{\theta}}{1 - \csc{\theta}}\)
Applying the subtraction of perfect squares at the denominator, we have that the expression is given by:
\(\frac{\cos{\theta}(1 - \csc{\theta})}{1 - \csc^2{\theta}}\)
Applying an identity, we have that:
\(1 - \csc^2{\theta} = -\cot^2{\theta}\)
Hence the expression is:
\(-\frac{\cos{\theta}(1 - \csc{\theta})}{\cot^2{\theta}}\)
cot = cos/sin, hence:
\(-\frac{sin^2{\theta}(1 - \csc{\theta})}{\cos{\theta}}\)
tan = sin/cos, hence the simplified expression is:
\(-sin{\theta}\tan{\theta}(1 - \csc{\theta})\)
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Please can you find the gradient of this line.
Answer:
So, gradient is 2.
Step-by-step explanation:
Here Let's take points (3,4) and (4,6)
so
gradient(m) = (y2-y1)/(x2-x1)
= (6-4)/(4-3)
= 2/1
Is the following relation a function?
A. Yes
B. No
Please help
B — No
A function can only have one output value.
Combining like terms
Answer:
x^2-5xy+4y^2
Step-by-step explanation:
In the equation we see only 1 example of like terms, 2xy-7xy=-5xy
So the simplified equation is
x^2-5xy+4y^2
This is your answer:
x^2+5xy+4y^2
What is log4 (5x+2) = 5x in exponential form?
Answer:
4^(5x) = 5x + 2
Step-by-step explanation:
Applying the definition of logarithm we can say that if logb(x) = y, then b^y = x;
Accordingly your equation log4 (5x+2) = 5x in exponential form should be 4^(5x) = 5x + 2
Quotient of a number x and 45?
In the data set shown below, what is the value of the quartiles? (42, 43, 44, 44, 48, 49,50 )
Answer:
Step-by-step explanation:
first arrange the data from ascending to descending order
since they are already in the order we dont need to change
first quartile(Q1)=(N+1)/4
=7+1/4
=8/4
=2 nd term
=43
second quartile(Q2 or median)=(N+1)/2
=7+1/2
=8/2
=4 th term
=44
third quartile(Q3)=3(N+1)/4
=3(7+1)/4
=3*8/4
=24/4
=6 th term
=49
Please anyone help me
Answer:$2094.00
Step-by-step explanation:Put in desmos calculator and put 4.7 percent of 2000 and you get 94 then add 94 to 2000 and you got $2094
What is the constant of proportionality for this table?
Time (hr) 2 4 5 9
Pay ($) 16 32 40 72
Question 4 options:
1/8
16
8
2
I WILLMARK BRAINLIEST
what type of data would best be displayed in a box plot
Answer:(2x+7)+(2x+7)
Step-by-step explanation:
what you do is put 2x on the top and on the side and then seven on the top and on the side and then you got your answer
The cost of shipping a package is $2.75 per pound. Jeremy wants to ship a package that has a mass of 15 kg. How much will it cost Jeremy to ship this package? Use 1 kg = 2.2 lbs.
Answer:
$90.75
Step-by-step explanation:
First we convert kilograms to pounds.
1 kg = 2.2 lb
15 kg = 15 * 2.2 lb = 33 lb
Cost of shipping: $2.75/lb
Cost of shipping 33 lb: 33 lb * 2.75/lb = $90.75
Answer: $90.75
100 Points! Algebra question. Graph the function. Photo attached. Thank you!
The cost of each pound of grass seed is $6.
A graph of the solution for the cost of each pound of grass seed is shown below.
How to determine the cost of each pound of grass seed?In order to determine the cost of each pound of grass seed, we would assign a variable to the cost of each pound of grass seed and then translate the word problem into an algebraic linear equation.
Let the variable x represent the cost of each pound of grass seed.
Since Lori bought 3.6 pounds of grass seed and she was charged $22.90, including a tax of $1.30, an algebraic linear equation that best represent this situation is given by;
3.6x + 1.30 = 22.90
3.6x = 22.90 - 1.30
3.6x = 21.60
x = 21.60/3.6
x = $6.
In conclusion, we would sue an online graphing calculator to plot the solution for the cost of each pound of grass seed as shown in the image attached below.
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What is the surface area of the cylinder? Express the answer in terms of Pi?
Cylinder. Diameter 8 centimeters. Height 18 centimeters
a
176π cm2
b
304π cm2
c
152π cm2
d
792π cm2
Answer:
A
Step-by-step explanation:
Lids
It is not clear how many lids the cylinder has or perhaps it is a solid. I'll say it has 2 lids.
The surface area of one lid = pi * r^2
r = 4
The surface area of one lid is pi*4^2 =16 pi
The surface area of two lids is 32*pi
Body
Length of the body = pi * d
Length of the body = 8 * pi cm
Height of the body = 18 cm
Area = l*h
Area = 8pi * 18 cm
Area = 144 pi
Total
Total Area = 32 pi + 144pi
Area = 176 pi cm^2
Please help with this math question!
Answer:
\(2000 {(1 + \frac{.07}{12}) }^{5 \times 12} = 2835.25\)
Find the unit rate of $4.56 for 6 apples
Answer:
$0.76 per apple
Step-by-step explanation:
Answer:
$0.76 per apple
Step-by-step explanation:
Need answer ASAP please!! Will give brainliest!
Solve each equation by taking square roots.
1. 6r^2=-108
2. 9p^2-8=-58
Answer:
15) A) {3i√2, -3i√2}
16) C) {5i√2/3, -5i√2/3}
Step-by-step explanation:
15)
\(6r^2=-108\\\\r^2=\dfrac{-108}{6}=-18\\\\r=\pm\sqrt{-18}\\\\\boxed{r=\pm3i\sqrt{2}}\)
__
16)
\(9p^2-8=-58\\\\9p^2=-50\qquad\text{add 8}\\\\p^2=-\dfrac{50}{9}\qquad\text{divide by 9}\\\\p=\pm\sqrt{-\dfrac{50}{9}}\qquad\text{take the square root}\\\\\boxed{p=\pm\dfrac{5\sqrt{2}}{3}}\)
Plz help
Elimination method
1.
3x-5y=3
4x-15=-21
2. 1000 tickets were sold for a school play. The regular price tickets were $5. Tickets for reserved seating was $2 more. The box office took in a total of $5300. How many tickets of each type were sold?
Answer:
1. (6,3)
2. x = 850, y = 150
Step-by-step explanation:
1. 3x-5y=3
4x-15y=-21
-9x +15y=-3 (multiply by -3)
4x-15y=-21
-5x=-30
x = 6
3(6)-5y=3
18-5y=3
-5y= -15
y= 3
so, x = 6, y = 3
2.
let x be regular
let y be reserved
x+y=1000
x= 5, y= 5+2=7 ("2 dollar more")
5x+7y=5300
x+y=1000
use the elimination method
x=850, y=150
so, the regular tickets were 850 and reserved tickets were 150 sold.
As an estimation we are told £3 is €4.
Convert €52 to pounds.
Answer:
£69.33
Step-by-step explanation:
4/3=1.33333333333 so that 52*1.33333333333 would convert 52 euros into 52 pounds
What is the volume of a hemisphere with a diameter of 60.9 in rounded to the nearest tenth of a cubic inch
The volume of the hemisphere with a diameter of 60.9 inches rounded to the nearest tenth is 59131.7 inches³.
Given that,
Diameter of a hemisphere = 60.9 inches
We have to find the volume of the hemisphere.
We know that, radius is half the measure of the diameter.
Radius of the hemisphere = 60.9 / 2 = 30.45 inches
Volume of a hemisphere is,
Volume = 2/3 π r³
Here r is the radius
Substituting,
Volume = 2/3 π (30.45)³
= 59131.7 inches³
Hence the volume is 59131.7 inches³.
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graph the system of equations. clearly mark the solution to the system. you may use the included graph or create your own.y = 2x + 1y = -x + 7
Solution
For this case we have the following equations:
y= 2x +1
y= -x +7
If we graph both equations we got:
Then the solution would be x= 2 and y= 5
Which statements are true about the graph of y < 2x+1? Check all that apply 3 The slope of the line is 1 The line is solid The area below the line is shaded. A solution to the inequality is (2, 3) The x-intercept of the boundary line is (-2, 0) Graph y
The statements that are true about the graph of y < 2x+1 include the following:
C. The area below the line is shaded.
D. A solution to the inequality is (2, 3).
What is an inequality?In Mathematics and Geometry, an inequality simply refers to a mathematical relation that is typically used for comparing two (2) or more numerical data and variables in an algebraic equation based on any of the inequality symbols;
Greater than (>).Less than (<).Greater than or equal to (≥).Less than or equal to (≤).Based on the information provided, we have the following equation (inequality);
y < 2x + 1
The slope of the above equation (inequality) is 2 and the y-intercept of the boundary line is (1, 0). Additionally, the area below the dashed line must be shaded because the inequality symbol is less than (<).
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