The perimeter of the figure below is 60.7 ft. Find the length of the missing side. 7.2 ft 4.1 ft 4.1 ft 4.1 ft 4.1 ft 12.8 ft ? 1.9 ft 1.9 ft 7.2 ft (Note: diagram is NOT to scale)
we know that
The perimeter of the figure is equal to the sum of its length sides
so
P=7.2(2)+4.1(2)+4.1(2)+12.8+1.9(2)+x
Combine like terms
P=47.4+x
Remember that
P=60.7 ft
substitute
60.7=47.4+x
x=60.7-47.4
x=13.3 ft
therefore
the answer is
13.3 ftIn order to answer this question, remember that gasoline costs $2.56/gallon and the tank takes 15 gallons.
You have another person who wants to carpool with you and your friend. The tank will be split evenly. How much do you and your friend each save by having a third person sharing the tank of gas?
37c/in 2
, what should the radius of the base of the cup be to minimize the construction cost (in c)? Let r and h (in in.) be the radius and height of the pencil cup, respectively. r= in. (Round your answer to two decimal places, if necessary.) Complete the following parts. (a) Give a function f in the variable r for the quantity to be optimized. f(r)= cents (b) State the domain of this function. (Enter your answer using interval notation.) (c) Give the formula for h in tems of r 1
h= (d) To determine the optimal value of the function f r
we need the critical numbers of answers as a comma-separated list. If an answer does not exist, enter DNE.)
Given: The cost of making a cylindrical cup is 37 cents per square inch, Let the radius of the base of the cup be r. The height of the cup is h. Finding the function f in the variable r for the quantity to be optimized:
The surface area of the cup is given by:
Surface area = Curved surface area + 2 × Base area Curved surface area = 2 × π × r × hBase area = πr²Total surface area = 2 × π × r × h + πr²= πr(2h + r)
Construction cost = 37 × πr(2h + r) cents
∴ f(r) = 37πr(2h + r) cents
Finding the domain of the function f: Since both r and h are positive, the domain of the function f is given by:0 < r and 0 < hGiven that the height of the cup is twice the radius,
i.e. h = 2r∴ f(r) = 37πr(2(2r) + r) cents= 37πr(4r + r) cents= 185πr² cents
The domain of the function is 0 < r.
Finding the critical points of the function f:
∴ f'(r) = 370rπ centsSetting f'(r) = 0, we get:370rπ = 0⇒ r = 0
We have to note that since the domain of the function is 0 < r, the critical point r = 0 is not in the domain of the function.
Therefore, there are no critical points in the domain of the function f. Hence, there is no optimal value of r. Thus, the answer is "DNE".
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1-4x/2x+1=4/1-5x
solve in quadratic equations
Answer:
I can only assume that the entire 1-4x is divided by 2x, and 4 by all of 1 - 5x. You can guarantee more accurate results by using brackets where appropriate. If I read that expression with the correct notation, it reads as \(1 - \frac{4x}{2x} + 1 = \frac{4}{1} - 5x\).
Assuming instead that it's meant as \(\frac{1 - 4x}{2x + 1} = \frac{4}{1 - 5x}\), we can solve it as shown below, giving us x values of 1 and 3/20 (or 0.15).
Step-by-step explanation:
First let's reformat this to the usual ax² + bx + c format:
\(\frac{1 - 4x}{2x + 1} = \frac{4}{1 - 5x}\\(1 - 4x)(1 - 5x) = 4(2x + 1)\\1 - 5x - 4x + 20x^2 = 8x + 4\\20x^2 - 5x - 4x - 8x + 1 - 4 = 0\\20x^2 - 17x - 3 = 0\)
Let's solve it with the quadratic formula:
\(x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}\\\\x = \frac{17 \pm \sqrt{-17^2 - 4\times 20 \times( -3)} }{2\times20}\\\\x = \frac{17 \pm \sqrt{289 + 240} }{40}\\\\x = \frac{17 \pm 23 }{40}\\\\x = 1, \frac{3}{20}\)
**Ms. Fernando was rebuilding a garden in her backyard. Last year her garden was a square with a side length of 6 meters. This year she increased the area of the garden to 48 square meters, so she added x meters to just the width. Write and solve an equation to find x. Be sure to include units in your answer.
The solution is:
Last Year Length = 4 meters
This Year Length = 12 meters
This Year Width = 10 meters
Here, we have,
We know, area of the rectangle is given by the formula:
Area = Length * Width
Given width = 5
Area = 20
We solve for Length:
Area = Length * Width
20 = Length * 5
Length = 20/5 = 4
Last Year Length = 4 meters
Now, this year, the length would be 3 times as long, so new length would be:
This Year Length = 4 * 3 = 12 meters
This year, the width would be two times previous year, so width would be:
This Year Width = 5 * 2 = 10 meters
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complete question:
Last year, Mr. Petersen's rectangular garden had a width of 5 meters and an area of 20 square meters.
This year, he wants to make the garden three times as long and two times as wide.
a. Solve for the length of last year's garden using the area formula. Then, draw and label the
measurements of this year's garden.
Last Year
This Year
5 m
20
square
meters
answer please and fast
f(x)= 2x+3/x-1, x ≠ 1, dan f^-1 adalah invers dari f
tentukan :
A. infers fungsi F
B. Nilai dari f^-1 (-3)
Answer:
The answer are
A.
\( {f}^{ - 1} (x) = \frac{x + 3}{x - 2} \)
B.
\( {f}^{ - 1} ( - 3) = 0\)
Step-by-step explanation:
To find the infers we do that
\(f(x) = \frac{2 x + 3}{x - 1 } \\ (x - 1)f(x) = 2x + 3 \\ xf(x) - f(x) = 2x + 3 \\ xf(x) - 2x = f(x) + 3 \\ x(f(x) - 2) = f(x) + 3 \\ x = \frac{f(x) + 3}{f(x) - 2} \\ then \: \\ {f}^{ - 1} (x) = \frac{x + 3}{x - 2} \\ then \\ {f }^{ - 1} ( - 3) = \frac{ - 3 + 3}{ - 3 + 2} = 0\)
A cylindrical silo that stores cereal has a diameter of 16 feet and is 40 feet tall. Approximately what volume of rice is in the silo when it is 34 full
Approximately 15,418.646 cubic feet of rice are in the silo when it is 34% full.
To calculate the approximate volume of rice in the silo when it is 34% full, we need to find the volume of a cylindrical segment.
First, let's calculate the height of the rice-filled portion. If the silo is 40 feet tall and it is 34% full, the height of the rice-filled portion is 34% of 40 feet, which is 0.34 * 40 = 13.6 feet.
Now, let's calculate the radius of the rice-filled portion. The diameter of the silo is 16 feet, so the radius is half of the diameter, which is 16 / 2 = 8 feet.
Using the formula for the volume of a cylindrical segment:
V = (1/3) * π * h * (3r^2 + h^2)
where V is the volume, π is approximately 3.14159, h is the height of the rice-filled portion, and r is the radius of the rice-filled portion.
Plugging in the values:
V = (1/3) * 3.14159 * 13.6 * (3 * 8^2 + 13.6^2)
Calculating this expression gives us:
V ≈ 3.14159 * 13.6 * (3 * 64 + 184.96)
≈ 3.14159 * 13.6 * (192 + 184.96)
≈ 3.14159 * 13.6 * 376.96
≈ 15418.646 cubic feet
Therefore, approximately 15,418.646 cubic feet of rice are in the silo when it is 34% full.
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Describe the continuity or discontinuity of the graphed function.
I can't figure this out, and I really need help :(
Answer: Not Continuous
Step-by-step explanation:
A continuous function means it can be drawn on a graph uninterrupted. This function contains two jump discontinuity, where the function suddenly jumps to a different y-value without values connecting the jump.
Hope this helps.
Kim bought a birdhouse that originally cost $36. She used a coupon that took 25% off the price. How much money did Kim save?
Kim saved $9 by using the coupon.
How to find Original price?
The MSRP (i.e., Manufacturer's Suggested Retail Price) set the original price, which is the cost. In the majority of cases, the original price would have been less expensive than the current price, though this is not always the case. Finding an item's original price and knowing the price after a discount are both made possible by original price.
Original price = Sales price/(100%-Discount%)
To find out how much money Kim saved, we need to first find out how much the birdhouse cost after the coupon was applied.
The coupon took 25% off the original price, so the birdhouse cost 100% - 25% = 75% of its original price.
So, the new price of the birdhouse would be:
36 * 75% = $27
Kim saved 36 - 27 = $9 by using the coupon.
Therefore, Kim saved $9 using the coupon.
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Question 1 (Multiple Choice Worth 1 points)
(02.04 LC)
A student is running a 10-kilometer race. He runs 1 kilometer every 4 minutes. Select the function that describes his distance from the finish line after x minutes.
1: f(x)=1/4x+10
2: f(x)=-1/10x+4
3: f(x)=1/10+4
4: f(x)=-1/4x+10
The correct function that describes the student's distance from the finish line after x minutes is f(x) = -1/4x + 10.
The correct function that describes the student's distance from the finish line after x minutes can be determined by analyzing the given information. We know that the student runs 1 kilometer every 4 minutes, and the race is a total of 10 kilometers.
Let's examine the options:
1. f(x) = 1/4x + 10
This function represents the distance covered by the student in x minutes, but it does not account for the fact that the total race distance is 10 kilometers.
2. f(x) = -1/10x + 4
This function has a negative coefficient for x, which would indicate that the student is getting farther away from the finish line as time progresses, which is not the case.
3. f(x) = 1/10 + 4
This function is a constant and does not change with time, so it cannot describe the student's distance from the finish line.
4. f(x) = -1/4x + 10
This function correctly represents the student's distance from the finish line. The negative coefficient for x indicates that the distance decreases as time progresses, and the constant term of 10 represents the initial distance from the finish line, which is 10 kilometers.
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A car wash detailed 256 cars in 8 hours. At what rate did the car wash detail
cars in cars per hour?
O A. 31 cars per hour
O B. 33 cars per hour
O C. 32 cars per hour
O D. 30 cars per hour
a recent study focused on the amount of money single men and women save monthly. the information is summarized here. assume that the population standard deviations are unknown but equal. sample size sample mean sample standard deviation men 25 50 10 women 30 54 5 at the 0.01 significance level, do women save more money than men? what is the value of the test statistic for this hypothesis test?
Yes, women save more money than men. The value of the test statistic for this hypothesis test is 1.93.
The hypothesis test used in this case is a two-sample t-test. This test is used to compare two independent means from two different groups. The null hypothesis states that there is no difference between the means of the two groups, while the alternative hypothesis states that there is a difference.
To begin, the value of the test statistic must be calculated. The test statistic is calculated by subtracting the two means and dividing by the standard error. The standard error is calculated by taking the standard deviation of each group and dividing it by the square root of the sample size. So, for this hypothesis test, the test statistic is calculated as follows: (54 - 50) / (10/√25 + 5/√30) = 4 / (2.06) = 1.93.
To determine if women save more money than men, the test statistic must be compared to the critical value associated with the significance level. As the significance level is 0.01, the corresponding critical value is -2.575 and 2.575. Since the test statistic (1.93) is greater than the critical value (2.575), the null hypothesis can be rejected. This indicates that there is sufficient evidence to suggest that women save more money than men.
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Mariah has $210.58 to spend at the mall. She goes into one of her favorite clothing stores and ends up spending $59.40 on three items. How much money does Mariah have left? (Show your work).
Answer:
151.18
Step-by-step explanation:
I can't really show my work on this, sorry.
Answer:
151.18
Step-by-step explanation:
210.58-59.40=151.18
Find the specified change-of-coordinates matrix. Let B = {b1, b2} and C= {c1, c2} be bases for R2, where b = ,b2 C1 = C2 Find the change-of-coordinates matrix from B to C. A. -2 -4 В. 3 -10 С. 3 D. -6 Seçimi Sıfırla 1/2
The change-of-coordinates matrix from basis B to basis C is given by the matrix [3 -4; -1 1]. This matrix allows us to convert coordinates expressed with respect to basis B to coordinates expressed with respect to basis C.
The change-of-coordinates matrix from basis B to basis C can be determined by expressing the basis vectors of C in terms of the basis vectors of B. In this case, we are given B = {b1, b2} and C = {c1, c2}, where b1 = (1, 2), b2 = (-2, 1), c1 = (1, 1), and c2 = (2, -1). To find the change-of-coordinates matrix, we express c1 and c2 in terms of b1 and b2 and arrange the coefficients in a matrix. The first column of the change-of-coordinates matrix corresponds to the coefficients of b1 in terms of c1 and c2. To find these coefficients, we solve the equation c1 = x1 * b1 + x2 * b2, where x1 and x2 are the unknown coefficients. Using the given values, we have (1, 1) = x1 * (1, 2) + x2 * (-2, 1). Solving this system of equations, we get x1 = 3 and x2 = -1. Similarly, for the second column of the change-of-coordinates matrix, we solve the equation c2 = y1 * b1 + y2 * b2, where y1 and y2 are the unknown coefficients. Substituting the values, we have (2, -1) = y1 * (1, 2) + y2 * (-2, 1). Solving this system, we find y1 = -4 and y2 = 1.
Therefore, the change-of-coordinates matrix from basis B to basis C is:
[3 -4]
[-1 1]
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Select all of the functions that include a reflection of the parent function across the x-axis.
The functions that include a reflection of the parent function across the x-axis are h(x) = -3/2x², q(x) = -6x², k(x) = -x²
How to select all of the functions of reflection of the parent function across the x-axis.from the question, we have the following parameters that can be used in our computation:
The list of optons
The function of reflection of the parent function across the x-axis can be represented as
g(x) = -f(x)
This means that the function is negated
using the above as a guide, we have the following:
The functions are h(x) = -3/2x², q(x) = -6x², k(x) = -x²
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Winter Wonderland charges children $0.50 per ride down the sledding hill plus an entrance fee. Todd sled down the hill 16 times and paid $18 for his time at winter wonderland.
What is the equation in y=mx+b form?
The equation of the amount to be paid by anyone using the ride in slope intercept form is; y = 0.5x + 10
How to write an equation in slope intercept form?The general form of the equation of a Line in slope intercept form is;
y = mx + b
where;
m is slope
b is y-intercept
Now, we are told that;
Amount charge by Winter Wonderland per child = $0.50
We are told that there is a separate entrance fee.
Amount of times todd sled down the hill = 16 times
Amount paid by todd = $18
Thus, using the slope intercept form, we have;
18 = 0.5(16) + b
18 = 8 + b
b = 10
Thus, the equation of this amount to be paid in slope intercept form is;
y = 0.5x + 10
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What’s the answer?
I want it now! Please?
Answer:
1.827
Step-by-step explanation:
you find
Write an equation of the line in point-slope form
that passes through the given points.
7. (4, 2) and (1,6)
Answer:
Step-by-step explanation:
slope=(6-2)/(1-4)=4/-3=-4/3
eq. of line is y-2=-4/3(x-4)
A fish tank is in the shape of an open glass cuboid 30 cm deep with a base 16 cm by 17 cm, these measurements being external. If the glass is 0.5 cm thick and its mass is 3 g/cm3, find a the capacity of the tank in litres, and the mass of the tank in kg.
Answer:
3.24 kg
Step-by-step explanation:
internal Vol = (30-0.5)(16-1)(17-1) = 7080 cm^3 = 7.08ltrs
external Vol= 30* 16* 17 = 8160cm^3 = 8.16ltrs
Vol of thickness = 8160 - 7080 = 1080cm^3
Mass of the tank= density * volume = 3*1080 = 3,240g = 3.24 kg
Two numbers have a difference of -72 and a product of -720? What is their sum?
The answer to the question "difference of -72 and a product of -720?" is -9.
What is the sum of two numbers with a difference of -72 and a product of -720?To find the sum of the two numbers, we can set up the following equations based on the given information:
Let the two numbers be x and y, where x > y.
x - y = -72 (since the difference between the numbers is -72)
xy = -720 (since the product of the numbers is -720)
We can solve these equations simultaneously using algebraic methods. One way to do this is to isolate one of the variables in one of the equations and substitute it into the other equation. For example, we can isolate y in the first equation by rearranging it to y = x + 72, and then substitute this into the second equation:
x(x + 72) = -720
Expanding the left-hand side, we get:
x^2 + 72x = -720
Rearranging the equation, we get:
x^2 + 72x + 720 = 0
Now we can solve for x using the quadratic formula:
x = (-b ± √(b^2 - 4ac)) / (2a)
where a = 1, b = 72, and c = 720. Plugging in these values, we get:
x = (-72 ± √(72^2 - 4(1)(720))) / (2(1))
Simplifying further, we get:
x = (-72 ± √(5184 - 2880)) / 2
x = (-72 ± √2304) / 2
x = (-72 ± 48) / 2
Now we have two possible values for x:
x1 = (-72 + 48) / 2 = -12
x2 = (-72 - 48) / 2 = -60
Since x > y, we take x = -12 and y = -72 - (-12) = -60 + 12 = -48.
Thus, the sum of the two numbers is -9, which is obtained by adding x and y:
-12 + (-48) = -9.
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pls help!!! worth 14 points:))))
Answer:
28
Step-by-step explanation:
Answer:
28
Step-by-step explanation:
180-152=28
28 _________
Can someone help me with my math ?
Answer:
The first option is correct: Angle 2 through 5
Step-by-step explanation:
Both angles 2 and 5 are directly vertical or opposite to each other and are the only angles that are proportionate/equal sizes.
The other three options are incorrect because angles 4 and 3 are not the same equal value and are right next to each other making them not vertically across.
angles 1 and 5 are close to being vertical but are not the same size as angle 1 is much smaller than angle 5.
angles 6 and 1 are next to each other making them not vertically to each other and angle 6 is much larger than angle 1.
the correct answer is angles 2 and 5, the first option.
Antonio graphs these equations and finds that the lines intersect at a single point,
(-5, 0.25).
Equation A: 4y-3x=16
Equation B: -x-8y=3
which statement is true about the values of x=-5 and y=0.25?
Option B is correct. The statement that is true about the values we have been given here is that They are the only values that make both equations true.
How to solve for the equationsWe have been given two equations
The first equation is
4y-3x=16
We have to plug in the values (-5, 0.25) in this equation
4(0.25) -3(-5) =16
Then we have
1 + 15 = 16
Hence 16 = 16 This satisfies the equation.
In the second equation we have to follow the same step
-x-8y=3
Such that
-(-5)-8*0.25 = 3
5-2 = 3
3 = 3 This also satisfies the equation.
Therefore the correct answer option is B
Complete questiona. They satisfy equation 8 but not equation A.
B. They are the only values that make both equations true.
C. They show that the equations represent the same line.
D. They satisfy equation A but not equation B.
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3x-2= 4x+9/3 whats the solution
A, B, C, D, E, F, G and H form a cuboid. AB = 6.7cm, BC = 2.3cm, and CG = 8.1cm. Find ED rounded to 1DP.
According to the Pythagoras theorem, the value of ED is 8.4 cm
Pythagoras theorem:
Pythagoras theorem defines that the right-angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Given,
A, B, C, D, E, F, G and H form a cuboid.
AB = 6.7cm, BC = 2.3cm, and CG = 8.1cm.
Now, we need to find the value of Ed and round off it into 1 decimal place.
Here we have the cuboid with the edges named as A, B, C, D, E, F, G and H.
Now, we have to use the value of BC and CG to find the value of hypotenuse of BG.
Because, BG and ED are opposite to each other.
Which means both have the same hypotenuse value.
So, according to the Pythagoras theorem,
=> BG² = BC² + CG²
=> BG² = (2.3)² + (8.1)²
=> BG² = 5.29 + 65.61
=> BG² = 70.9
So, the value of BG is 8.42.
Therefore, the value of ED is 8.4 When we round off this into one decimal place.
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The choir practiced 3 times this week. On Monday,the choir practiced 3/4 hour. On Wednesday, they practiced 1/2 hour more than on Monday. On Friday, they practiced twice as long as on both Monday and Wednesday combined. Altogether,how long did the choir practice this week?
The choir practice this week for 5 1/4 hours.
On Monday, the choir practiced for 3/4 hour.
On Wednesday, they practiced for 1/2 hour more than on Monday, which is 3/4 + 1/2 = 6/8 + 4/8 = 10/8 = 1 1/4 hours.
On Friday, they practiced twice as long as on both Monday and Wednesday combined, which is 2 * (3/4 + 1 1/4) = 2 * 2 = 4 hours.
To find the total practice time for the week, we can add up the times from each day:
3/4 + 1 1/4 + 4 = 5 + 1/4 = 5 1/4 hours.
Therefore, the choir practiced for 5 1/4 hours in total this week.
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An artist is going to cut four similar right triangles from a rectangular piece of paper like the one shown to the right. What is BE to the nearest tenth when AC=13
The measurement of altitude BE is 4 unit.
What is an altitude?As the average level of the sea's surface, sea level is used to measure altitude. A high altitude is defined as being significantly higher than sea level, such as Mount Everest. It is referred to as having a low altitude when something is closer to the ground, like a plane coming in to land.
As ABCD is rectangle
AD = BC = 12
ΔABC = ΔBCD
BE = FD
5² = 3²+BE²
AE = 3
BE = √(5²-3²)
BE = 4
Thus, The measurement of altitude BE is 4 unit.
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NEED HELP WAITH MATH HOMEWORK ASPA PLZ HELP ME RN thank you
Answer:C
Step-by-step explanation:it says from which means x-axis, (2,-7) moved left and right is (-5,-7) and "x-axis" as well bc the second option for the x coordinate is -7 that take 9 moves and not 7
9+3.5g=11-0.5g solve for g
Answer:
g = 1/2
Step-by-step explanation:
Step 1: Add 0.5g to both sides
9 + 4g = 11
Step 2: Subtract 9 from both sides
4g = 2
Step 3: Divide by 4 on both sides
g = 2/4
Step 4: Simplify
g = 1/2
9 + 3.5g = 11 - 0.5g
2 = 4g
g = 0.5