The circumference of a circle is 13 pi what is the area in square inches
Answer:
42.25π or 132.73 square inches---------------------
Use the area formula:
A = πr², where A is the area and r is the radius.We are given the circumference of the circle, which is C = 2πr.
So, we can set up an equation:
2πr = 13π ⇒ r = 6.5 inchesNow, we can plug this value of r into the area formula:
A = π(6.5)² = 42.25πA = 132.73 square inches (rounded to two decimal places)Therefore, the area of the circle is 42.25π or 132.73 square inches.
Describe the transformation
Parent function: f(x) = x^4
Transformed function: g(x) = 5 - x^4
Answer: Reflection on the x-axis and moved 5 units upwards.
Step-by-step explanation:
First, we will transform the transformed function into an equation form we may be more familiar with.
g(x) = 5 - x⁴ ➜ g(x) = -x⁴ + 5
We see that this function is reflected on the x-axis (as given by the "-") and is moved 5 units upwards (as given by the "+ 5").
We can also graph this, see attached.
Find the derivative of the function
using logarithmic differentiation.
pls help guys thank you sm
The derivative of the function [tex]f(x)=(x+2)^{x}[/tex] is [tex](x + 2)^x \left( \frac{x}{x + 2} + ln(x + 2) \right)[/tex] A, using logarithmic differentiation.
How to determine derivative of the function?To find the derivative of the function [tex]f(x)=(x+2)^{x}[/tex] using logarithmic differentiation, take the natural logarithm of both sides of the equation. This gives us the following equation:
[tex]ln(f(x)) = x ln(x + 2)[/tex]
Then differentiate both sides of this equation with respect to x. This gives us the following equation:
[tex]\frac{f'(x)}{f(x)} = \frac{x}{x + 2} + ln(x + 2)[/tex]
Multiply both sides of this equation by f(x) and solve for f′(x). This gives us the following equation:
[tex]f'(x) = f(x) \left( \frac{x}{x + 2} + ln(x + 2) \right)[/tex]
Then substitute the function [tex]f(x)=(x+2)^{x}[/tex] into this equation. This gives us the following equation:
[tex]f'(x) = (x + 2)^x \left( \frac{x}{x + 2} + ln(x + 2) \right)[/tex]
Therefore, the derivative of the function [tex]f(x)=(x+2)^{x}[/tex] is [tex](x + 2)^x \left( \frac{x}{x + 2} + ln(x + 2) \right)[/tex]
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Which of the following is equivalent to 7x +5 < -2(4x-3)?
• x > 11
• -x < 1
• 15x < -11
• 15x < 1
To solve this inequality for x, we need to isolate x on one side of the inequality sign. Let's begin by distributing the -2 on the right-hand side:
7x + 5 < -2(4x - 3)
7x + 5 < -8x + 6
Adding 8x to both sides, we get:
15x + 5 < 6
Subtracting 5 from both sides, we get:
15x < 1
So the equivalent inequality to 7x + 5 < -2(4x-3) is 15x < 1.
Therefore, the answer is: 15x < 1.
A rectangle has vertices A(6, 4), B(2, 4), C(6, -2), D(2, -2).
What are the coordinates of the vertices of the image after a dilation with the origin as its center and a scale factor of 2?
A'(9, 6), B'(3, 6), C'(9, -3), D'(3, -3)
A'(3, 2). B'(1, 2), C'(3, -1), D'(1, -1)
A' (12, 8), B'(4, 8), C'(12, -4), D'(4, -4)
Answer:
A' (12, 8), B'(4, 8), C'(12, -4), D'(4, -4)
Step-by-step explanation:
Since the dilation is in the center, we just need to multiply everything by our scale factor, 2.
A (6,4) → (12, 8)
B (2,4) → (4, 8)
C (6, -2) → (12, -4)
D (2, -2) → (4, -4)
Hope this helps!
As seen in the diagram below, Santiago is building a walkway with a width of � x feet to go around a swimming pool that measures 20 feet by 9 feet. If the total area of the pool and the walkway will be 672 square feet, how wide should the walkway be?
Answer: 6ft
Step-by-step explanation:
180+40x+18x+4x^2=672
4x^2+58x+180x=672
4x^2+58x-492=0
2x^2+29x-246=0
(x=6)(2x+41)=0
x=6 or x=-20.5
Should be 6ft
Which of the following algebraic steps will solve the equation 3x/4=7/3 what is the solution
9x=28. x=28÷9
Tamara's tuition for her first year of college costs $8,240. Tamara received a scholarship that will
cover .25 of the cost. If Tamara has two years to save up the remaining amount, how much should she save each month in order to meet her
goal?
Answer:
Check Explanation
Step-by-step explanation:
The question is incomplete. But I can explain in a way that the full question can be easily solvable.
Note that the missing part of the question is percentage or fraction of the total college tuition cost that the scholarship covers.
For the sake of clarity, let us assume that the scholarship covers 60% of the total college tuition costs.
This means that Tamara still has to raise 40% of the total college tuition cost herself over the space of 2 years (24 months)
The total college tuition cost = $8240
Amount that Tamara still needs to raise = 40% × 8240 = $3296
She has to raise this amount over 2 years (24 months) on a monthly basis.
So, the amount she has to save monthly over 24 months = (3296/24) = $137.333
So, whatever the fraction or percentage of the total college tuition cost that the scholarship covers, just divide the rest of the college tuition cost after the scholarship has done its part (1 - fraction or 100% - percentage) by 24 months.
The answer is the amount that Tamara needs to save monthly.
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Write one hundred twenty-seven in standard form.
Answer:
1.27 X 10²
Step-by-step explanation:
standard form is in format A X 10^n, where A is a number between 1 and 10
127 = 1.27 X 10²
Choose the correct range of the function.
x: -2, -1, 0, 1, 2, 3
y: -11, -4, 1, 4, 5, 4
a. all real numbers
b. all numbers greater than or equal to -11
c. all numbers less than or equal to 5
d. all numbers less than or equal to 0
The range of the function is the set of all real numbers
Calculating the correct range of the function.From the question, we have the following parameters that can be used in our computation:
x: -2, -1, 0, 1, 2, 3
y: -11, -4, 1, 4, 5, 4
The range of a function is the set of y values of the function
using the above as a guide, we have the following:
Range = -11, -4, 1, 4, 5, 4
This can be expressed as
Range = -11 to 4
So, we can say that the range is the set of all real numbers
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Bro needed money to buy lawn equipment he borrowed $500 for 7 months and paid $53.96 in interest what was the annual interest rate
The interest rate required to pay a simple interest of $53.96
from a principal of $500.00 is 18.50%.
How to calculate the rate of interest per year?Simple interest is expressed as:
[tex]\sf I = \dfrac{P\times r \times t}{100}[/tex]
Where I is interest, P is principal, r is interest rate and t is time.
Given that:
Principal P = $500Interest I = $53.96Elapsed time t = 7 months = 7/12 = 7/12 yearInterest rate r = ?Plug the given values into the above formula and solve for interest rate.
[tex]\sf I = \dfrac{P\times r \times t}{100}[/tex]
[tex]\sf r = \dfrac{I}{P\times t}[/tex]
[tex]\sf r = \dfrac{\$53.96}{( \$500 \times \frac{7}{12} )}[/tex]
[tex]\sf r = 0.18501[/tex]
[tex]\sf r = 0.18501\times100\%[/tex]
[tex]\sf r = 18.50\%[/tex]
Therefore, the interest rate is 18.50%.
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a boat heading out to sea starts out at Point A, at a horizontal distance of 1083 feet from the lighthouse/the shore. From that point, the boat's crew measures the angle of elevation to the lighthouse's beacon-light from theat point to be 8 degrees. At some later time, the crew measures the angle of elevation from point B to be 4 degrees. Find the distance from point A to point B. Round your answer to the nearest foot if necessary.
The distance from point A to point B is approximately 920 feet.
How to find the distance from point A to point B
Let's call the distance from point A to point B as x.
From point A, the angle of elevation to the lighthouse's beacon-light is 8 degrees.
Using the tangent function to find the height of the lighthouse (h):
tan(8) = h/1083
h = 1083 tan(8) ≈ 157.6 feet
From point B, the angle of elevation to the lighthouse's beacon-light is 4 degrees.
Using the tangent function again to find the height of the lighthouse from point B (h'):
tan(4) = h'/(1083-x)
h' = (1083-x) tan(4) ≈ 78.6 - 0.07x
Since the height of the lighthouse should be the same from both points A and B, we can set h = h' and solve for x:
1083 tan(8) = (1083-x) tan(4)
x = 1083 - (157.6/tan(4)) ≈ 920 feet
Therefore, the distance from point A to point B is approximately 920 feet.
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Which of the following is not a way to represent the solution of the inequality 8x − (5x + 4) greater than or equal to −31? (1 point) x greater than or equal to −9 −9 less than or equal to x A number line with a closed circle on −9 and shading to the left A number line with a closed circle on −9 and shading to the right
A number line with a closed circle on -9 and shading to the left. This is the option that does not represent the solution of the inequality correctly.
1. Simplify the inequality: 8x - (5x + 4) ≥ -31
2. Distribute the negative sign: 8x - 5x - 4 ≥ -31
3. Combine like terms: 3x - 4 ≥ -31
4. Add 4 to both sides: 3x ≥ -27
5. Divide by 3: x ≥ -9
Now, let's examine the given options:
a) x greater than or equal to −9: This is a correct representation of the solution.
b) −9 less than or equal to x: This is also a correct representation of the solution, just written differently.
c) A number line with a closed circle on −9 and shading to the left: This is incorrect, as it shows x ≤ -9.
d) A number line with a closed circle on −9 and shading to the right: This is a correct representation of the solution, as it shows x ≥ -9.
Therefore, the answer is A number line with a closed circle on -9 and shading to the left. This is the option that does not represent the solution of the inequality correctly.
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What is the tax owed by a married couple filing jointly who report a taxable income of $97,0257
To calculate the tax owed by a married couple filing jointly who report a taxable income of $97,025, we can use the 2021 tax brackets and rates provided by the IRS.
The first $19,900 of their income is taxed at a rate of 10%, which equals $1,990.
The next $60,050 of their income is taxed at a rate of 12%, which equals $7,206.
The remaining $17,075 of their income is taxed at a rate of 22%, which equals $3,756.50.
Adding these amounts together gives a total tax liability of $12,952.50.
Therefore, the tax owed by a married couple filing jointly who report a taxable income of $97,025 is $12,952.50.
Answer: 15,734
Step-by-step explanation:
If you look at the table itself it has the answer however it says at least 97,000 but less than 97,050 and it says and you are-- right under married filing jointly is 15,734
Suppose that 40% of the students who drive, carry jumper cables. Your car has a dead battery and you don't have jumper cables, so you decide to stop students who are headed to the parking lot and ask them whether they have a pair of jumper cables. Clearly you would be interested in the number of students you would have to stop before finding one who has jumper cables.
a. Describe the variable of interest in a and give its range of possible values.
b. What is the probability that the third person asked, would the one who has a jumper cable?
c. What is the probability that the first person will be the one who has a jumper cables(wouldn't
that be nice, eh!)?
d. How many people would you expect to have to ask before you find the first one with a jumper
cable? Also give the distribution and appropriate parameters.
On average, you would expect to have to ask 2.5 students before finding one who has jumper cables.
The distribution is the geometric distribution with the parameter p = 0.4.
We have,
a.
The variable of interest is the number of students who need to be stopped before finding one who has jumper cables.
The range of possible values is 1, 2, 3, 4, ...
b.
The probability that the third person asked would be the one who has a jumper cable can be found using the geometric distribution with parameter p = 0.4, where p is the probability of success (i.e., finding someone with jumper cables).
The probability can be calculated as:
P(X = 3)
= (1 - p)^(3-1) x p
= (0.6)^2 * 0.4
= 0.144
c.
The probability that the first person asked will be the one who has jumper cables.
P(X = 1)
= p
= 0.4
d.
The expected value (or mean) of the number of people who need to be asked before finding the first one with jumper cables can be calculated using the geometric distribution with parameter p = 0.4.
So,
E(X)
= 1/p
= 1/0.4
= 2.5
Thus,
On average, you would expect to have to ask 2.5 students before finding one who has jumper cables.
The distribution is the geometric distribution with the parameter p = 0.4.
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Please help me with this thank youuuuu
"g" is the subject of the equation in terms of "a" and "h."
To make "g" the subject of the equation "a = (g + h)/2," we can rearrange the equation to isolate "g."
Let's follow the steps:
Multiply both sides of the equation by 2 to eliminate the fraction:
2a = g + h
Subtract "h" from both sides to isolate "g":
2a - h = g
By performing these operations, we have successfully isolated "g" on one side of the equation.
The resulting equation is "g = 2a - h."
This equation shows that "g" is equal to two times "a" minus "h."
By substituting the given values of "a" and "h" into the equation, you can calculate the corresponding value of "g."
If we have "a = 5" and "h = 3," we can substitute these values into the equation to find the value of "g":
g = 2(5) - 3
g = 10 - 3
g = 7
"a" is 5 and "h" is 3, the value of "g" is 7 according to the equation "g = 2a - h."
The equation "g = 2a - h" allows you to express "g" in terms of "a" and "h" by subtracting "h" from twice the value of "a."
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I don’t understand this question
If f(x)=3x²-2x+5 and g(x) = x³+4x²-1 then the function obtained by multiplying two functions is 3x⁵+10x⁴-3x³+17x²+2x-5
The two functions are f(x)=3x²-2x+5 and g(x) = x³+4x²-1
We have to find (f×g)(x)
(f×g)(x)= f(x)g(x)
=(3x²-2x+5)( x³+4x²-1)
=3x⁵+12x⁴-3x²-2x⁴-8x³+2x+5x³+20x²-5
Combine the like terms
=3x⁵+10x⁴-3x³+17x²+2x-5
Hence, the function obtained by (f×g)(x) is 3x⁵+10x⁴-3x³+17x²+2x-5
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Solve for the remaining angles and side of the two triangles that can be created. Round to the nearest hundredth:
B=50°
, b=5
, a=6
Triangle 1: (where angle A is acute)
A=
C=
c=
Triangle 2 (where A is obtuse)
A=
C=
c=
To solve for the remaining angles and side of the triangles, we can use the Law of Sines and the Law of Cosines.
Triangle 1: (where angle A is acute)
Given:
B = 50°
b = 5
a = 6
Using the Law of Sines:
[tex]sin A / a = sin B / b[/tex]
sin A / 6 = sin 50° / 5
sin A = (6 x sin 50°) / 5
A = arcsin[(6 x sin 50°) / 5]
A ≈ 44.14°
Using the Law of Sines again:
sin C / c = sin B / b
sin C / c = sin 50° / 5
sin C = (c x sin 50°) / 5
Using the Law of Cosines:
c² = a² + b² - 2ab x cos C
c² = 6² + 5² - 2(6)(5) x cos C
c² = 36 + 25 - 60 x cos C
c² = 61 - 60 x cos C
c ≈ √(61 - 60 x cos C)
Triangle 2 (where A is obtuse):
Given:
B = 50°
b = 5
a = 6
Using the Law of Sines:
sin A / a = sin B / b
sin A / 6 = sin 50° / 5
sin A = (6 x sin 50°) / 5
A = arcsin[(6 x sin 50°) / 5]
A ≈ 44.14° (rounded to the nearest hundredth)
Using the Law of Sines again:
sin C / c = sin B / b
sin C / c = sin 50° / 5
sin C = (c x sin 50°) / 5
Since A is obtuse, C = 180° - A - B
C ≈ 85.86° (rounded to the nearest hundredth)
Using the Law of Cosines:
c² = a² + b² - 2ab x cos C
c² = 6² + 5² - 2(6)(5) x cos C
c² = 36 + 25 - 60 x cos C
c² = 61 - 60 x cos C
c ≈ √(61 - 60 x cos C)
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A pharmaceutical company receives large shipments of ibuprofen tablets and uses an acceptance sampling plan. This plan randomly selects and tests 26 tablets, then accepts the whole batch if there is at most one that doesn't meet the required specifications. What is the probability that this whole shipment will be accepted if a particular shipment of thousands of ibuprofen tablets actually has a 15% rate of defects?
(Report answer as a decimal value accurate to four decimal places.)
P(accept shipment) =
Answer:
0.8475
Step-by-step explanation:
We can model the number of defective tablets in the shipment as a binomial distribution with parameters $n=26$ (the sample size) and $p=0.15$ (the probability of a defective tablet).
To calculate the probability that the whole shipment will be accepted, we need to find the probability that the number of defective tablets in the sample is at most 1, which means that the shipment meets the required specifications.
Describe how r(x) - 3f(x+1) transforms the graph of the parent function f(x)=x^2 .
The function r(x) - 3f(x+1) transforms the parent function f(x)=x^2 by shifting it left by 1 unit, vertically stretching it by a factor of 3, and translating it downward by 3 units. The resulting graph is a parabola with vertex at (-1,-3) and a steeper shape.
The function r(x) - 3f(x+1) is a transformation of the parent function f(x)=x^2. Let's consider each transformation step by step.
First, the function f(x+1) represents a horizontal shift of the parent function f(x)=x^2 to the left by 1 unit. This means that the vertex of the parabola is shifted to the point (-1,0).
Next, the function 3f(x+1) vertically stretches the parabola by a factor of 3. This means that the distance between the vertex and the x-intercepts of the parabola is tripled, while the shape of the parabola remains the same.
Finally, the function r(x) subtracts a constant value from the transformed function. This translates the entire graph downward by 3 units.
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7. When you eat an ice cream scoop with a volume of 179.59 cubic inches, find the radius.
Then find the surface area of that scoop. (Normal thoughts of a geometry
ice cream.) *****hint - go backwards****
student eating
Answer:
radius: 3.50 inarea: 153.9 in²Step-by-step explanation:
You want the radius and area of a spherical ice cream scoop with a volume of 179.59 cubic inches.
VolumeThe volume of a sphere is given by the formula ...
V = (4/3)πr³
RadiusThen the radius will be ...
r = ∛(3V/(4π))
r = ∛(3·179.59/(4π)) ≈ 3.49997 . . . . in
The radius is about 3.50 inches.
AreaThe area of a sphere is given by ...
A = 4πr^2
A ≈ 4π·(3.49997 in)² ≈ 153.9355 . . . . in²
The area of that scoop is about 153.9 square inches.
__
Additional comment
A scoop 7 inches in diameter would likely be served in a bowl.
#95141404393
What is the domain of the function?
The domain of a function is all of the possible x-values.
In the case of this function, we can see that the x-values begin at negative infinity, continue/change between -1 and 1, and pick up again to continue through positive infinity.
Therefore, the domain of the function is negative infinity to infinity, option D/#4.
Hope this helps!
math homework 8th (pls help)
The surface area of the cone is 553 cm².
What is surface area?The surface area of a three-dimensional object is the total area of all its faces.
To calculate the surface area of the cone, we use the formula below
Formula:
A = πrl+πr².................... Equation 1Where:
A = Surface area of the coner = Radius of the of the conel = Slanght height of the coneπ = PieFrom the question,
Given:
r = 8 cml = 20 cmπ = 3.14Substitute these values into equation 1
A = (3.14×8×20)+(3.14×8²)A = 502.4+50.24A = 552.64 cm²A = 553 cm²Learn more about surface area here: https://brainly.com/question/25092270
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please help me with my geometry i cant fail this class or i’ll have to move out of my parents house :(
Answer:
lj= 18 feet
mgm=52°
Step-by-step explanation:
lj=GJ/2=36/2=18feet
mGM=mHJ=52°
An Italian trader bought merchandise in China and now wants to return home with it. However, he doesn’t want to return via the Silk Road. Choose all the spots on the route he can take to reach Italy.
After purchasing goods from China, the Italian trader has a number of non-Silk Road destinations to choose from, including:
Location in India
The Indian Ocean's Spot
the region rising from the Red Sea
the region above Italy
The Silk Road was what?The network of commercial routes known as the "Silk Road" was used for more than 1,500 years, from the Han dynasty of China's opening of trade in 130 BCE to the Ottoman Empire's suspension of trade with the West in 1453 CE.
Over a distance of over 6,437 kilometers (4,000 miles), the Silk Road passed through some of the most challenging landscapes in the world, including the Pamir Mountains and the Gobi Desert. Because no single administration was in charge of maintenance, the roads were usually in poor condition.
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(Will give brainlist)
Find the indicated measure for circle P.
(26) The length FE in the intersecting chords is 6.
(27) The length of arc AE = 64⁰.
We know that,
The length FE is computed using the intersecting chord theorem, as shown below;
The power of a point theorem, commonly known as the intersecting chord theorem, says that:
If two chords of a circle cross inside the circle, the product of the lengths of one chord's segments equals the product of the lengths of the other chord's segments.
FE ≅ AB = 6
The length of the arc AE is computed as follows:
⇒ arc of AE + arc of AB + arc of ED = 180
Since sum of angles of a semi circle
⇒ arc of AE + 58 + 58 = 180
⇒ arc of AE + 116 = 180
⇒ arc of AE = 64
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Similar or not similar
SSS or AAA or SAS
Answer:
These triangles are not similar because the ratios of corresponding sides are not equal.
MN is tangent to OK. What is mZK?
N
M
43°
m2K =
K
The size of angle K (m∠K) as shown in the circle is 50°.
What is a tangent to a circle?Tangent to a circle is the line that touches the circle at only one point.
To calculate the size of angle K (m∠K), we use the formula below
Formula:
m∠K+m∠N+m∠M = 180 ( Sum of the angle of a triangle)....................... Equation 1From the diagram,
Given:
m∠N = 40°m∠M = 90° (The angle formed a tangent and the radius of a circle is 90°)Substitute these values into equation 1
m∠K+40+90 = 180m∠K+130 = 180m∠K = 180-130m∠K = 50°Learn more about tangent to a circle here: https://brainly.com/question/30385886
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If the nth term of a sequence is n squared - 3. Find the first 3 terms and the tenth term
The first three terms of the Sequence are -2, 1, 6 and the tenth term is 97.
Given that the nth term of a sequence is n squared - 3.
We can find the first three terms by substituting n = 1, 2, and 3 into the formula.
When n = 1, the first term is:
a1 = 1² - 3 = -1
When n = 2, the second term is:
a2 = 2² - 3 = 1
When n = 3, the third term is:
a3 = 3² - 3 = 6
Therefore, the first three terms of the sequence are: -2, 1, 6.
To find the tenth term, we substitute n = 10 into the formula.
a10 = 10² - 3 = 97
Therefore, the tenth term of the sequence is 97.
In summary, the first three terms of the sequence are -2, 1, 6 and the tenth term is 97.
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Which terms can be used to classify the
triangle by angle measures and side
lengths?
The terms that can be used to classify the triangle by angle measures and side lengths include the following: D. acute and isosceles.
What is an isosceles triangle?In Mathematics and Geometry, an isosceles triangle simply refers to a type of triangle with two (2) sides that are equal in length (side lengths) and two (2) equal angles.
This ultimately implies that, an isosceles triangle comprises two (2) side lengths that are equal and two (2) angles with the same magnitude.
In conclusion, the angle measures of each of the angles represented by this triangle is equal to 90 degrees and as such, they are acute angles.
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
