The number of gallons needed to fill 3/4 of the bathtub is 123 gallons. Option C.
Volume of a rectangular prismTo calculate the number of gallons of water needed to fill 3/4 of the bathtub, we need to find the volume of 3/4 of the rectangular prism-shaped bathtub and then convert that volume into gallons.
Given dimensions of the bathtub:
Width = 30 inches
Length = 60 inches
Depth = 21 inches
Volume of the bathtub = Width × Length × Depth
Volume = 30 inches × 60 inches × 21 inches
Volume in cubic feet = (30 inches × 60 inches × 21 inches) / ([tex]12^3[/tex])
Volume of 3/4 of the bathtub = (3/4) × [(30 inches × 60 inches × 21 inches) / ([tex]12^3[/tex])]
Now, to convert the volume from cubic feet to gallons, we multiply by the conversion factor of 7.48 gallons per cubic foot:
Volume in gallons = (3/4) × [(30 inches × 60 inches × 21 inches) / ([tex]12^3[/tex])] × 7.48
Volume in gallons ≈ 123 gallons
Therefore, the approximate number of gallons of water needed to fill 3/4 of the bathtub is 123 gallons.
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Find the maximum value of f(x, y, z) = 5xy + 5xz + 5yz – xyz subject to the constraint g(x, y, z) = x + y + z = 1, for x>0, y > 0, and z > 0.
We can solve this problem using the method of Lagrange multipliers. We need to maximize the function f(x, y, z) subject to the constraint g(x, y, z) = x + y + z = 1. We can set up the Lagrangian function L(x, y, z, λ) as follows:
L(x, y, z, λ) = f(x, y, z) - λg(x, y, z)
= 5xy + 5xz + 5yz - xyz - λ(x + y + z - 1)
To find the critical points of L, we need to take partial derivatives of L with respect to x, y, z, and λ, and set them equal to zero:
∂L/∂x = 5y + 5z - yz - λ = 0
∂L/∂y = 5x + 5z - xz - λ = 0
∂L/∂z = 5x + 5y - xy - λ = 0
∂L/∂λ = x + y + z - 1 = 0
From the first three equations, we can solve for x, y, and z in terms of λ:
x = (λ - 5y - 5z)/(5 - yz)
y = (λ - 5x - 5z)/(5 - xz)
z = (λ - 5x - 5y)/(5 - xy)
Substituting these expressions into the constraint equation x + y + z = 1, we get:
(λ - 5y - 5z)/(5 - yz) + (λ - 5x - 5z)/(5 - xz) + (λ - 5x - 5y)/(5 - xy) = 1
Simplifying this equation, we get:
λ(3xyz - 5(xy + xz + yz)) = -125
Since x, y, and z are positive, we know that 3xyz > 0, so we can divide both sides by 3xyz to get:
λ = -125/(5(xy + xz + yz))
Substituting this expression for λ back into the equations for x, y, and z, we get:
x = 5/3
y = 5/3
z = 1/3
We can check that these values satisfy the constraint equation x + y + z = 1 and that they correspond to a maximum of f(x, y, z) by computing the second partial derivatives of L and evaluating them at the critical point:
∂²L/∂x² = -yz, ∂²L/∂y² = -xz, ∂²L/∂z² = -xy, ∂²L/∂x∂y = 5 - z, ∂²L/∂x∂z = 5 - y, ∂²L/∂y∂z = 5 - x
The determinant of the Hessian matrix of L evaluated at the critical point is:
∂²L/∂x²(∂²L/∂y²)(∂²L/∂z²) + 2∂²L/∂x∂y(∂²L/∂x∂z)(∂²L/∂y∂z) - (∂²L/∂x²)(∂²L/∂y∂z)²
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At a middle school, 3 out of every 4 students ride a bus to school students at the school. How many students ride a bus to school?
Answer:
450 students
Step-by-step explanation:
In circle Q with m/PQR = 30 and PQ = 9 units, find the length of arc PR.
Round to the nearest hundredth.
The length of the arc PR of the circle comes out to be 5.71 units
Arc refers to a part of the circumference or the perimeter of a circle
Given:
m ∠PQR = 30
PQ = 9 units
PQ is the radius of the circle as it originates from the center and end lies on the circumference of the circle
Thus, r = 9 units
Length of arc = (θ ÷ 360) * 2πr
where θ is the measure of the angle subtended by the arc
r is the radius
Thus,
PR = (30 ÷ 360) * 2π9
= 1/12 * 2 * 3.14 * 9
= 1.57 * 3
= 5.71 units
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I need to find what is the solution of 3^8 times 3^2
Answer:
59049
Step-by-step explanation:
Let 'a' be a base number (like 3 in the question).
a^K X a^L = a^(K + L)
this will work as long as the base number is the same.
in this question, 3 is the base for both.
so we have 3^8 X 3^2 = 3^(8+2) = 3^10 = 59049
Find the X. Then use x ti find the lenght and width off each
Answer: 3
Step-by-step explanation:
Rhonda bought a new laptop for
. The laptop depreciates, or loses,
of its value each year. The value of the laptop at a later time can be found using the formula
, where P is the original value, r is the rate of depreciation written as a decimal, and t is the number of years since it was purchased. What will the laptop be worth in two years?
In two years, the laptop will be worth $blank.
The laptop will be worth $594.48 in two years.
To find the value of the laptop in two years, we need to substitute the given values into the formula:
Value = P x (1 - r)ⁿ
In this case, the original value of the laptop is $700, and it depreciates at a rate of 0.08 per year (which is 8% expressed as a decimal). We want to find the value in two years, so t = 2.
Substituting the values into the formula:
Value = $700 x (1 - 0.08)²
Value = $700 x (0.92)²
Value ≈ $700 x 0.8464
Value ≈ $594.48
Therefore, the laptop will be worth $594.48 in two years.
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In 1985, Leslie bought a classic 1956 Chevrolet Nomad for $22,000. Over the next 31 years, he invested approximately $750 per year into restoring the car to its original condition. In 2016 he sold it for $61,000.
a. Imagine he chose not to invest in the car. Assume he invested the initial $22,000 in an account that paid an average of 9.11 % interest compounded daily for the next 10 years. How much would that grow to in the 10 years? Round to the nearest hundred dollars.
b. Interest rates started to fall in the 1990s. Imagine he took the money the account had earned in part a (after rounding) and invested it in a CD that paid an average of 4% compounded daily for the remaining 21 years. How much would that grow to by 2016? Round to the nearest hundred dollars.
c. If he deposited $750 each year into an account that paid 4.09% compounded annually, how much would be in that account after the 31 years? Round to the nearest hundred dollars.
d. How much of a gain would the three accounts from parts a, b, and c make in the 31 years, to the nearest hundred dollars?
e. How much did he invest in the Nomad?
f. How much did he gain on the Nomad investment?
g. Which investment was more conservative?
If Leslie had invested the initial $22,000 in an account that paid an average of 9.11% interest compounded daily for 10 years, it would grow to approximately $56,300.
b. If Leslie had taken the money from part a and invested it in a CD that paid an average of 4% compounded daily for the remaining 21 years, it would grow to approximately $135,300.
c. If Leslie deposited $750 each year into an account that paid 4.09% compounded annually for 31 years, he would have approximately $49,600.
d. The total gain from the three accounts would be approximately $158,200.
e. Leslie invested $22,000 in the Nomad.
f. Leslie gained $39,000 on the Nomad investment (selling price of $61,000 minus the initial investment of $22,000 and the yearly investments of $23,250 over 31 years).
g. The CD account that paid an average of 4% compounded daily was the most conservative investment since it provided a lower rate of return compared to the other accounts. The other accounts had higher risk due to fluctuations in interest rates and market conditions.
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some researchers decide they want to do a survey with the target population of all americans. the survey will be distributed online. current reports show that 89% of americans utilize the internet. 1. what type of coverage error might occur in this study? 2. what are two ways that bias might be avoided?
This can help ensure that the responses are accurate and reliable.
What is probability?
Probability is a branch of mathematics that deals with the study of random events or phenomena. It is the measure of the likelihood that an event will occur or not occur, expressed as a number between 0 and 1, where 0 represents impossibility and 1 represents certainty.
The type of coverage error that might occur in this study is under coverage error.
This means that there is a group of people in the target population that are not represented in the sample, in this case, those who do not use the internet.
Two ways to avoid bias in this study are:
Using probability sampling methods:
Probability sampling methods such as simple random sampling, stratified sampling, or cluster sampling can help ensure that each member of the target population has an equal chance of being included in the sample. This can help avoid bias by ensuring that the sample is representative of the target population.
Using proper survey design:
The survey should be designed in a way that avoids leading questions, loaded questions, or questions that are ambiguous or unclear.
The survey should be pretested with a small sample to ensure that the questions are clear, unbiased, and easy to understand.
Hence, This can help ensure that the responses are accurate and reliable.
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Find the slope for the following line:
Answer:3/4
Step-by-step explanation:
Please help
5. The following two-way table contains information about the
number of right-handed and left-handed pupils in year 7 and
year 8. Find the probability that a student chosen at random is
left-handed.
Year 7
Year 8
Total
Left-Handed
10
14
24
Right-Handed
20
15.72
35.72
Total
200
220
84648
The probability that a student chosen at random is left-handed is 40%
How to calculate the probabilityFrom the given two-way table, we can see that the total number of left-handed students is:
10 + 14 = 24
And the total number of students is:
20 + 10 + 14 + 16 = 60
Therefore, the probability that a student chosen at random is left-handed is:
P(left-handed) = 24/60
Simplifying this fraction by dividing both the numerator and the denominator by 12, we get:
P(left-handed) = 2/5
P(left-handed) ≈ 0.40 or 40.%
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in a contest in which 7 contestants are entered, in how many ways can 5 prizes be awarded
There are 21 different ways to award the 5 prizes among the 7 contestants for the combinations.
Two ideas in combinatorics are combinations and permutations. Permutations are arrangements where the order is important, whereas combinations are a choice of elements when the order is irrelevant. Combinations involve selecting a subset, whereas permutations entail putting a group of things in a specific order.
We'll use the concept of combinations. In a contest with 7 contestants and 5 prizes to be awarded, you want to determine the number of ways to choose 5 winners from the 7 contestants.
You can use the formula for combinations: [tex]C(n, r) = n! / (r!(n-r)!)[/tex] where n is the total number of contestants (7 in this case) and r is the number of prizes (5 in this case).
Step 1: Calculate[tex]n![/tex] ([tex]7![/tex]in this case)
[tex]7![/tex] = 7 × 6 × 5 × 4 × 3 × 2 × 1 = 5,040
Step 2: Calculate[tex]r
[tex]5![/tex] = 5 × 4 × 3 × 2 × 1 = 120
Step 3: Calculate [tex](n-r)![/tex] ([tex]2![/tex] in this case)
[tex]2![/tex]= 2 × 1 = 2
Step 4: Apply the formula [tex]C(n, r) = n! / (r!(n-r)!)[/tex]
C(7, 5) = 5,040 / (120 × 2)
C(7, 5) = 5,040 / 240
C(7, 5) = 21
There are 21 different ways to award the 5 prizes among the 7 contestants.
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At a conference, there are 150 math teachers and 15 science teachers. Write the ratio of math teachers to science teachers in simplest form
The simplest form of the ratio is 10.
What is simplest form definition and examples?A fraction is said to be in its simplest form if 1 is the only common factor of its numerator and denominator. For example,89,because 1 is the only common factor of 8 and 9 in this fraction. We simplify fractions because it is always to work or calculate when the fractions are in the simplest form.
We have the information:
There are 150 math teachers
and, 15 science teachers
We have to find the ratio of math teachers to science teachers in simplest form.
Now, According to the question:
The ratio will be:
=> 150/15 = 10
Hence, The simplest form of the ratio is 10.
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Jestion 8/10
To file your federal and state taxes you
can use tax preparation software for federal taxes,
but can't for state taxes
must prepare the same tax forms for both
can use tax preparation software for state taxes,
but can't for federal taxes
must prepare different forms for each type of
government (if your state requires it) on
Tax prep software can be used for federal taxes but not always for state taxes, which may require separate forms.
While documenting your government and state charges, you have a couple of choices for how to plan and submit them. One choice is to involve charge planning programming for government charges, which can simplify the cycle and more smoothed out.
In any case, you for the most part can't involve a similar programming for state charges, as each state has its own expense code and necessities.
All things being equal, you might have to set up your state burdens independently, either by finishing up paper structures or utilizing separate duty readiness programming planned explicitly for your state.
A few states bring concurrences with specific expense programming suppliers to the table free or limited programming to occupants, so it merits checking with your state's duty position to see what choices are accessible to you.
It's critical to take note of that while government and state burdens frequently require comparative data, they might require various structures and estimations, so giving close consideration to the particular prerequisites for each kind of tax is significant.
Furthermore, on the off chance that you live in an express that doesn't have a personal expense, you may just have to record a government expense form.
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find the area between y=2x and y=2√ x. round your answer to four decimal places. area = _____________
Therefore, The area between y=2x and y=2√x is approximately 0.3333 (rounded to four decimal places).
To find the area between y=2x and y=2√x, we'll first need to find the points of intersection between the two functions. Next, we'll integrate the difference between the functions over the interval of intersection.
Step 1: Find the points of intersection:
Set the functions equal to each other: 2x = 2√x
Divide by 2: x = √x
Square both sides: x^2 = x
Rearrange to find x: x^2 - x = 0
Factor: x(x - 1) = 0
So the points of intersection are x = 0 and x = 1.
Step 2: Integrate the difference between the functions:
Integral(2√x - 2x)dx from 0 to 1
Step 3: Calculate the area:
Area = ∫[2√x - 2x]dx from 0 to 1
= [4/3 * x^(3/2) - x^2] evaluated from 0 to 1
= (4/3 * 1^(3/2) - 1^2) - (4/3 * 0^(3/2) - 0^2)
= (4/3 - 1) - 0
= 1/3
Therefore, The area between y=2x and y=2√x is approximately 0.3333 (rounded to four decimal places).
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30 points plus brainliest if you answer the ones in the photo
8. Simplify
7/2a • 5/a^2
The simplified form of [tex]7/2a * 5/a^2[/tex] is [tex]35/(2a^3)[/tex].
What is the simplified form of the expression?An expression refers to statement having minimum of two numbers, variables or both and an operator connecting them.
To simplify expression [tex]\frac{7}{2a} * \frac{5}{a^2}[/tex] , we will combine the numerical coefficients and simplify the variables separately.
We will multiply the numerical coefficients:
= 7/2 * 5
= 35/2
We will simplify the variables:
[tex]= a * a^2\\= a^{1+2}\\= a^3[/tex]
By combining coefficients and variables, we have:
[tex]= (35/2) * (1/a^3)\\= 35/(2a^3).[/tex]
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What is the simplified version of the squad root of 45?
Answer:
3√5
Step-by-step explanation:
Hence, the square root of 45 can be expressed as, √45 = √(9 × 5) = 3√5. 45 is not a perfect square, hence, it remains within roots. The simplified radical form of the square root of 45 is 3√5.
Greg granted a truck for one day there was a base fee of $19.95 and then there was additionally charged of 83 cents for each mile driven Greg had to pay $185.12 when he returned to the truck for how many miles did he drive the truck.
Greg drove approximately 199.1 miles in the truck.
To solve this problemWe can subtract the base fee from the total amount he paid and then divide the remaining amount by the additional charge per mile.
Total amount paid - Base fee = Additional charge for miles
$185.12 - $19.95 = $165.17 (additional charge for miles)
To calculate the number of miles travelled, divide the additional fee by the fee per mile:
$165.17 / $0.83 per mile = 199.1 miles
Therefore, Greg drove approximately 199.1 miles in the truck.
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please help:
find the value of x if RSTV∼WXYZ
Answer:
x = 21
Step-by-step explanation:
if RSTV ≈ WXYZ
then 5x - 2 = 103
5x = 103 + 2 = 105
x = 105/5 = 21
A garden is √30m long and √8m wide. The garden is covered in grass except for a small rectangular pond which is √2m long and √6m wide. Express the area of the pond as percentage of the area of the garden
Step-by-step explanation:
Garden area = L x W = sqrt (30 *8) = sqrt (240)
Pond area = L x W = sqrt (2 *6) = sqrt (12)
Percentage of the garden that is pond:
pond area / garden area x 100%
sqrt (12) / sqrt(240) x 100% = sqrt (1/20) x100% = 22.36 %
What is factoring by finding the common factor and why is it important?
How do you identify the common factor when factoring an algebraic expression?
Can you provide an example of factoring by finding the common factor?
What are the steps involved in factoring by finding the common factor?
Is it always possible to factor an algebraic expression by finding the common factor?
To factorize any given equation, the first concept to be learnt is GCF(greatest common factor), identifying maximum common power, besides the concept of handling polynomial using the quadratic formula (for maximum power = 2) can also be used.
Example : Consider the following equation - [tex]x^5 + 3x^4+2x^2+4x[/tex], here we observe that the greatest common factor of the coefficients' is 1, while for the power of variable 'x', the minimum is 1, therefore we take x common. One way to factorize :
[tex]x(x^4+3x^3+2x+1)[/tex] . Another way to write the above mentioned is :
[tex]x^4(x+3)+2x(x+2)[/tex]
Hope, the steps are clear and easy to understand. You can also use quadratic formula to find roots and then put them in (x+a)(x+b) form
suppose (x, y, z) are jointly uniform in the unit sphere in 3-dimensional space. find the distribution of x^2 y^2 z^2.
The distribution of x^2 y^2 z^2 is not uniform. To find the distribution, we need to use the transformation method.
Let g(x,y,z) = x^2 y^2 z^2. Then, we need to find the Jacobian of the transformation. J = | ∂(x,y,z)/∂(u,v,w) |, where (u,v,w) = (x^2 y^2 z^2, θ, φ)
∂(x,y,z)/∂u = 2xy^2z^2
∂(x,y,z)/∂v = -x^2y^2zsin(φ)
∂(x,y,z)/∂w = -x^2y^2z^2cos(φ)
Therefore, J = 2x^2y^3z^3sin(φ)cos(φ)
The joint distribution of (u,v,w) is given by:
f(u,v,w) = f(x,y,z) |J|, where (x,y,z) is uniform on the unit sphere.
Since (x,y,z) is uniform on the unit sphere, we know that:
f(x,y,z) = 1/(4π)
Substituting the Jacobian, we get:
f(u,v,w) = 1/(4π) * 2x^2y^3z^3sin(φ)cos(φ)
To find the marginal distribution of u, we integrate out v and w:
f(u) = ∫∫ f(u,v,w) dv dw
= ∫∫ 1/(4π) * 2x^2y^3z^3sin(φ)cos(φ) dv dw
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we want to estimate a population mean using a 99onfidence interval and a random sample of 35 individuals. what is the critical t-score? group of answer choices
Thus, the critical t-score for a 99% confidence interval with a sample size of 35 individuals is 2.728.
To calculate the critical t-score for a 99% confidence interval with a sample size of 35 individuals, we first need to determine the degrees of freedom (df) using the formula (n-1). In this case, df = 34.
Next, we need to find the t-value for the upper and lower tails of the distribution. Since we are looking for a 99% confidence interval, we need to divide the significance level (alpha) by 2 to get 0.005 for each tail.
Using a t-distribution table or calculator with 34 degrees of freedom and a probability of 0.005 in each tail, we find the critical t-value to be approximately 2.728.
Therefore, the critical t-score for a 99% confidence interval with a sample size of 35 individuals is 2.728.
This means that if we calculate the sample mean and construct a confidence interval using this t-value, we can be 99% confident that the true population mean falls within that interval.
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the volume of a cylinder is 96 π cubic meters and the height is 6 meters. find the diameter of the base of the cylinder.
The value of the diameter of the base of the cylinder is,
⇒ d = 8
We have to given that;
The volume of a cylinder is 96 π cubic meters
And, the height is 6 meters.
Since, We know that;
Volume of cylinder is,
V = πr²h
Substitute all the values we get;
96π = π × r² × 6
16 = r²
r = √16
r = 4
Thus, The value of the diameter of the base of the cylinder is,
⇒ d = 4 × 2
⇒ d = 8
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I NEED HELP SOMEONE PLEASE
Point A is at (4,1).
Point B is at (1,5).
Imagine drawing that blue triangle with a point at (1,1).
The distance of that bottom side would be (4-1) = 3.
The distance of the left side would be (5-1) = 4.
You can just could these distances on the graph or subtract the coordinates.
Now use the pyth. Theorem to find the hypotenuse, which is the length of one of the edges of the square.
3^2 + 4^2 = c^2
9+16 = 25 = c^2, so c = 5.
All sides of a square are the same.
AB = 5
BC = 5
CD = 5
DA = 5
Perimeter = 5+5+5+5 = 20 units
Area = 5x5 = 25 sq units.
See screenshot attached.
Have a good afternoon.
The value represented by point A is ____ -2.5
1. Less than
2. Equal to
3. Greater than
Answer:
Step-by-step explanation:
The value represented by point A is less than -2.5.
Please help with this problem thanks
write the taylor series for f(x)=sin(x)f(x)=sin(x) at x=π2x=π2 as ∑n=0[infinity]cn(x−π2)n.
Therefore, The Taylor series for f(x)=sin(x) at x=π/2 is ∑n=0[infinity](-1)^n(x−π/2)^{2n+1}/(2n+1)! and can be found by evaluating the derivatives of sin(x) at x=π/2.
The Taylor series for f(x)=sin(x) at x=π/2 can be found by taking the derivative of sin(x) and evaluating it at x=π/2. We get f(π/2) = sin(π/2) = 1 and f'(x) = cos(x). Evaluating f'(π/2) gives us cos(π/2) = 0. We can then find the second derivative f''(x) = -sin(x) and evaluate it at x=π/2 to get f''(π/2) = -1. This pattern continues, with each derivative evaluated at x=π/2 giving us a coefficient for our Taylor series. Therefore, the Taylor series for f(x)=sin(x) at x=π/2 is ∑n=0[infinity](-1)^n(x−π/2)^{2n+1}/(2n+1)!.
Therefore, The Taylor series for f(x)=sin(x) at x=π/2 is ∑n=0[infinity](-1)^n(x−π/2)^{2n+1}/(2n+1)! and can be found by evaluating the derivatives of sin(x) at x=π/2.
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what is the median of this data?
9 3 10 5 5 8 9 9 8 7
Answer:
8
Step-by-step explanation:
put the numbers in order smallest to largest
3 5 5 7 8 8 9 9 9 10
you need to find the middle number but because there is an even amount of numbers you need to find the two middle numbers and add them then divide by 2.
In this case it's the 8+8 =16
16/2=8
Shirley is drawing triangles that have the same area. The base of each triangle varies inversely with the height. What are the possible base and height of a second triangle if the first triangle's base is 12 and its height is 8 ?
The possible base and height of a second triangle that has the same area as a first triangle with a base of 12 and a height of 8 are (8, 12) or (6, 16).
The triangles have the same area, their base and height are inversely proportional to each other.
This means that if we multiply the base of the first triangle by some factor must divide its height by the same factor to keep the area the same.
Let's use "k" as the constant of proportionality that relates the base and height of the triangles.
Then, we can write:
base₁ × height₁ = base₂ × height₂
The subscripts 1 and 2 refer to the first and second triangles respectively.
The base and height of the first triangle so we can substitute those values:
12 × 8 = base₂ × height₂
Simplifying, we get:
96 = base₂ × height₂
Now, since the base and height are inversely proportional can choose any pair of values that multiply to 96.
The base of the second triangle is 8 then its height must be:
height₂ = 96 / base₂
= 96 / 8
= 12
Alternatively, if the base of the second triangle is 6, then its height must be:
height₂ = 96 / base₂
= 96 / 6
= 16
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a store has clearance items that have been marked down by 25%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?
You would end up paying 43.75% of the original price based on the clearance percent.
Here's how to calculate it:
- Start with the original price. Let's call it 100%.
- The clearance items have been marked down by 25%, so you're now paying 75% of the original price (100% - 25% = 75%).
- The sale is offering an additional 55% off the clearance price. To calculate the final percentage, you need to multiply the current percentage (75%) by the discount percentage (55%), and then subtract that from the current percentage.
- So, 75% x 55% = 41.25%. Subtract that from 75%: 75% - 41.25% = 33.75%.
- This means that you'll end up paying 33.75% of the original price.
- However, we need to remember that we started with 100%, so we need to calculate what percentage 33.75% is of 100%.
- To do this, we divide 33.75 by 100, and then multiply by 100 to get the percentage: (33.75/100) x 100 = 33.75%.
- Therefore, you end up paying 43.75% of the original price (100% - 25% - 41.25% = 33.75%, which is 43.75% of 100%).
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