Answers
a=1/4pid^2
4a=pid^2
4a/pi=d^2
square both sides to get d
Answer: Square root of 4a over pi equals d.
1) Start by multiplying both sides by 4 to get rid of the 4 in the denominator on the right. bringing it to the other side:
[tex]A = \frac{1}{4} \pi d^{2} \\ 4(A) = 4(\frac{1}{4} \pi d^{2} )\\ 4A = \pi d^{2} [/tex]
2) Divide both sides by π to move the π to the other side of the equation (I put the d squared on the left, but you can keep it on the right):
[tex]4A = \pi d^{2} \\ d^{2} = \frac{4A}{ \pi } [/tex]
3) Finally, take the square root of both sides to get the value of d:
[tex]d^{2} = \frac{4A}{ \pi } \\ d = \sqrt{\frac{4A}{ \pi } } [/tex]
-----
Answer: [tex]d = \sqrt{\frac{4A}{ \pi } } [/tex]
Related Questions
What is the best way to randomly choose these 500 members?
Answers
The last choice is the correct answer
Each baby dinosaur made 15 paintings and each adult dinosaur made 7 paintings. The entire herd made 208 paintings in total, and there were 3 times as many baby dinosaurs as adult dinosaurs.
Answers
4 adults.
Use the following system of equations:
x - 3y = 0
15x + 7y = 208
Answer:
Adult dinosaurs=4
Baby Dinosaurs=12
Step-by-step explanation:
You only have to put an X to a certain number, in this case it will be like this:
Adult dinosaurs=x
Baby Dinosaurs= 3x
So the equation will be:
15(3x)+7(x)=208
You multiply it and add it and it will end up like this:
52x=208
x=4
So there were 4 adult dinosaurs.
And baby dinosaurs there are 3x which equals 12.
Rewrite the following equation in log form: 2^2 = 4
Answers
We have to write
[tex] 2^2 =4 [/tex]
In log form
To convert exponential equation to log equation, we have to use the following rule[tex] If \ a^b = c, \ then \ b=log_{a} c [/tex]
So we will get
[tex] If \ 2^2 =4, \ then \ 2 = log_{2} 4 [/tex]
or
[tex] log_{2}4=2 [/tex]
And that's the required log form .
I will try my best to assist you with your question.
We can to write
2^2 =4
In log form
To convert exponential equation to log equation, we have to use the following rule If \ a^b = c, \ then \ b=log_{a} c
So we will get
If \ 2^2 =4, \ then \ 2 = log_{2} 4
or
log_{2}4=2
Hope I helped!
Good Luck!
⛈
What is the equation of the line that passes through the points (–12, –8) and (–17, –16)?
A.
-17=-8/5(x-16)
B.
-16=8/5(x-17)
C.
+16=-4/5(x+10)
D.
y+16=8/5(x+17)
Answers
happy to help :)_
A forester wants to estimate the height of a tree. He is 6 ft tall and cast a shadow of 4 ft. If the shadow of the tree is 60 ft, how tall is the tree?
Answers
1/3 of 60=20
60+20=80!
Hopefully this is correct, but i will go check real quick!
Answer:
90 ft
Step-by-step explanation:
Given,
The 6 ft tall man casts 4 ft long shadow,
So, the ratio of the height of the man and its shadow = [tex]\frac{6}{4}[/tex] = [tex]\frac{3}{2}[/tex]
Now, suppose the height of the tree that casts the shadow of 60 ft long is h ft,
So, the ratio of the height of tree and its shadow = [tex]\frac{h}{60}[/tex]
At the same time,
[tex]\frac{h}{60}=\frac{3}{2}[/tex]
[tex]h=60\times\frac{3}{2}=30\times 3=90[/tex]
Hence, the height of the tree is 90 ft
How to solve when sally went bowling her scores were 108, 72, and 95. if she bowls a 4th game, what will her score need to be to give her an average of 91?
Answers
Which points in the scatter plot are outliers?
Select EACH CORRECT ANSWER
point A
point F
point H
point K
point M
Answers
What is the vertex form of f(x)?
What is the minimum value of f(x)?
f(x)=x^2-6x+16
Answers
[tex]f(x)=a(x-h)^2+k[/tex]
where: [tex]h=\dfrac{-b}{2a};\ k=f(h)[/tex]
We have: [tex]f(x)=x^2-6x+16\to a=1;\ b=-6;\ c=16[/tex]
substitute:
[tex]h=\dfrac{-(-6)}{2\cdot1}=\dfrac{6}{2}=3\\\\k=f(3)=3^2-6\cdot3+16=9-18+16=7[/tex]
The vertex form of f(x):
[tex]f(x)=(x-3)^2+7[/tex]
The value of minimum is equal k.
Therefore: [tex]y_{min}=7[/tex]
What is the y-intercept of the equation 5x - 6y = 18?
A.-6
B. -3
C .5
D. 18
Answers
The y-intercept is for x = 0.
Put the value of x = 0 to the equation 5x - 6y = 18:
5(0) - 6y = 18
0 - 6y = 18
-6y = 18 divide both sides by (-6)
y = -3 → B.can someone please help ill try to add the picture
Answers
the lateral area, namely the area of the sides, is just the area of 4 rectangles.
left and right, 4x3 rectangles,
front and back, 15x3 rectangles,
so the lateral area of the box is just the sum of those areas,
[tex]\bf \stackrel{\textit{left and right}}{(4\cdot 3)}~~~~+~~~~\stackrel{\textit{front and back}}{(15\cdot 3)}[/tex]
Show work
Find the volume of the pyramid
Answers
______________________________________________________________
Answer: 128
Why?
______________________________________________________________
To find the volume of a cylinder, we have to use the formula lwh/3. The length is 8, width is 4, and height is 12. So we have to multiply all of those together, then divide by 3. (8 * 4 = 32) -> (32 * 12 = 384) -> (384/3 = 128) The volume is 128.
Hope this helped you! ♥
1. Simplify and state any excluded values [tex]\frac{c-5}{c^2-25} [/tex].
Answers
For this case we have the following expression:
[tex] \frac{c-5}{c^2-5} [/tex]
To simplify the expression, the first thing to do is factor the denominator.
We have then:
[tex]\frac{c-5}{(c-5)(c+5)}[/tex]
Then, canceling similar terms we have:
[tex]\frac{1}{(c+5)}[/tex]
From here, we must find any value that should be excluded from the expression.
We must exclude values of c that make the denominator equal to zero.
We have then:
[tex] c+5=0
c=-5 [/tex]
Answer:
The simplified expression is:
[tex]\frac{1}{(c+5)}[/tex]
The value to be excluded from the expression is:
[tex] c=-5 [/tex]
CDs and DVDs Solve by setting up a system of linear equations with 2 variables and 2 unknowns. CDs cost $5.96 more than DVDs at All Bets Are Off Electronics. How much would 6 CDs and 2 DVDs cost if 5 CDs and 2 DVDs cost $127.73?
Answers
Let c be the cost of a CD and d be the cost of a DVD.
We know that c = d+5.96.
We also know that 5c+2d = 127.73.
Substituting our value of c from the first equation into the second one, we have
5(d+5.96)+2d = 127.73
Using the distributive property,
5*d+5*5.96+2d = 127.73
5d+29.80+2d = 127.73
Combining like terms,
7d+29.80 = 127.73
Subtract 29.80 from both sides:
7d+29.80-29.80=127.73-29.80
7d = 97.93
Divide both sides by 7:
7d/7 = 97.93/7
d = 13.99
c = d + 5.96 = 13.99+5.96 = 19.95
6 CDs and 2 DVDs would be
6(19.95)+2(13.99) = 147.68
The relationship between the total cost and the costs of CDs and DVDs are represented by a linear function.
The cost of 6 CDs and 2 DVDs is $147.68
Let:
[tex]C \to CDs[/tex]
[tex]D \to DVDs[/tex]
From the question, we have:
[tex]C = D + 5.96[/tex]
[tex]5C + 2D = 127.73[/tex]
Substitute [tex]C = D + 5.96[/tex] in [tex]5C + 2D = 127.73[/tex]
[tex]5 \times (D + 5.96) + 2D = 127.73[/tex]
[tex]5D + 29.8 + 2D = 127.73[/tex]
Collect like terms
[tex]5D + 2D = 127.73 - 29.8[/tex]
[tex]7D = 97.93[/tex]
Divide both sides by 7
[tex]D = 13.99[/tex]
Substitute [tex]D = 13.99[/tex] in [tex]C = D + 5.96[/tex]
[tex]C = 13.99 + 5.96[/tex]
[tex]C = 19.95[/tex]
The cost of 6 CDs & 2 DVDs is represented as:
[tex]Cost =6C + 2D[/tex]
So, we have:
[tex]Cost =6 \times 19.95 + 2 \times 13.99[/tex]
[tex]Cost =147.68[/tex]
Hence, the cost of 6 CDs & 2 DVDs is $147.68
Read more about linear equations at:
https://brainly.com/question/11897796
The coordinate values of the vertices of △klm are integers. triangle klm has vertices located at (1, 1), (5, 4) and (5, 1). which set of coordinate pairs could represent the vertices of a triangle congruent to △klm?
Answers
A) (-1, 1), (-1, 4), (2, 1)
B) (0, 0), (3, 4), (0, 5)
C) (-1, 1), (-4, 5), (-1, 5)
D) (0, 0), (-5, 0), (0, 4)
==============================
The distance
between two points (x₁,y₁),(x₂,y₂) = d
[tex]d = \sqrt{ (x2-x1)^{2} + (y2-y1)^{2} } [/tex]
we have K(1, 1), L(5, 4) and M(5, 1)
we will find the length between each two points.
KL = [tex]d = \sqrt{ (5-1)^{2} + (4-1)^{2} } [/tex] = 5
LM = [tex]d = \sqrt{ (5-5)^{2} + (1-4)^{2} } [/tex] = 3
KM = [tex]d = \sqrt{ (5-1)^{2} + (1-1)^{2} } [/tex] = 4
now check each group from the choices
the group that will give the same result will be the correct choice.
The correct choice is C
C) (-1, 1), (-4, 5), (-1, 5)
check the answer;
K'(-1, 1), L'(-4, 5), M'(-1, 5)
K'L' = [tex]d = \sqrt{ (-4+1)^{2} + (5-1)^{2} } [/tex] = 5
L'M' = [tex]d = \sqrt{ (-1+4)^{2} + (5-5)^{2} } [/tex] = 3
K'M' = [tex]d = \sqrt{ (-1+1)^{2} + (5-1)^{2} } [/tex] = 4
Please help
What is mC?
A. 48
B. 77
C. 110
D. 180
Answers
The [tex]\angle[/tex]C is [tex]77^o[/tex] in the triangle ABC inscribed in the circle as evident from the figure.
A triangle is a polygon with three angles, three edges, and three vertices. It's one of the most introductory and abecedarian shapes in geometry.
Triangles can be classified by their side lengths, their angles, or their symmetry.
As the angle on the circumference is double the angle on the semicircle,
therefore,
[tex]\angle[/tex]B = [tex]\frac{110^o}{2}[/tex]
= [tex]55^o[/tex].
As the sum of a triangle is [tex]180^o[/tex],
So,
[tex]\angle[/tex]A + [tex]\angle[/tex]B + [tex]\angle[/tex]C = [tex]180^o[/tex],
Given that [tex]\angle[/tex]A = [tex]48^o[/tex],
[tex]48^o[/tex] + [tex]55^o[/tex] + [tex]\angle[/tex]C = [tex]180^o[/tex],
[tex]\angle[/tex]C = [tex]180^o[/tex] - [tex]48^o[/tex] - [tex]55^o[/tex],
[tex]\angle[/tex]C = [tex]77^o[/tex]
So, the [tex]\angle[/tex]C is [tex]77^o[/tex].
Learn more about Triangle here:
https://brainly.com/question/2773823
#SPJ4
Find the point on the curve y = √ 2 x + 4 which is closest to the point ( 3 , 0 ) .
Answers
The distance between (3,0) and (x, sqrt(2)*x + 4) is given by the distance formula:
distance: sqrt [ (3+x)^2 + (sqrt(2)*x + 4)^2 ]
Differentiate this, and then set the resulting derivative = to 0. Solve for x. Test your results to ensure that the distance d is actually the SMALLEST, given the root(s) x that you've found.
Write the coordinates of this point on the curve as ( x, f(x) ).
A local company manufactures netbook computers. Their profit function is given by this equation: y equal minus x to the power of 2 plus 120 x plus 3000 where x is the number of netbooks produced in one day and y is the profit (in dollars) the company makes that day. What is the maximum profit that the company can make? (Hint: Find the vertex of the parabola.)
Answers
The equation described above can also be written as, y = -x² + 100x + 4000To get the number of notebooks that will give them the maximum profit, we derive the equation and equate to zero. dy/dx = -2x + 100 = 0The value of x from the equation is 50. Then, we substitute 50 to the original equation to get the profit. y = -(50^2) + 100(50) + 4000 = 6500Thus, the maximum profit that the company makes is $6,500/day.
Read more on Brainly.com - https://brainly.com/question/3586459#readmore
Answer: $6,600
Step-by-step explanation:
Given: The profit function is given by the equation:
[tex]y=-x^2+120x+3000[/tex],where x is the number of netbooks produced in one day and y is the profit (in dollars) the company makes that day.
To find the maximum profit, first we need to find critical point of the function.
For that, first differentiate the above function w.r.t. x, we get
[tex]y'=-2x+120[/tex]
Now, Put [tex]y'=0[/tex], we get
[tex]-2x+120=0\\\\\Rightarrow\ x=60[/tex]
Again differentiate the above function w.r.t. x, we get
[tex]y"=-2<0[/tex]
By second derivative test, at x=60 , attains its maximum value.
Now, the Maximum profit will be :
[tex]y=-(60)^2+120(60)+3,000=6,600[/tex]
Hence, the maximum profit that the company can make = $6,600
A soccer field is 100 yd wide and 130 yd long. find the length of the diagonal of such a field. give an exact answer as a radical expression and an approximation to three decimal places.
Answers
Answer:
10√269 ≈ 164.012 yd
Step-by-step explanation:
You want the length of the diagonal of a 100 yd by 130 yd soccer field.
Pythagorean theoremThe diagonal of the field is the hypotenuse of the right triangle created by that diagonal and the sides of the field. The length of the hypotenuse is given by the Pythagorean theorem.
c² = a² +b²
c² = 100² +130² = 10,000 +16,900 = 26,900
c = √26900 = 10√269 ≈ 164.012
The length of the diagonal is 10√269 ≈ 164.012 yards.
__
Additional comment
As a practical matter, it would be difficult to measure this distance with an accuracy better than 0.1 yards.
Three numbers are in the ratio of 6:5:1. What are the numbers if the difference between the smallest and largest is 30?
a.48, 40, 18B.36, 30, 6
c.24, 20, 4D.180, 150, 30
Answers
difference in ratio between large and smallest number is:
6-5=5
thus:
largest number=6/5*30=36
medium number=5/5*30=30
smallest number=1/5*30=6
Answer: B.36, 30, 6
Solve the equation for x:
-4 + 8c - 8x = x + 3 + b please i need help!
Answers
please help asap 50 pts
Answers
Answer: The answer is B
Step-by-step explanation:
The smaller the coefficient, the wider the graph would be. So the smallest number, if positive, 1/5 is the widest and the largest 7 is the narrowest.
Answer:
b is ur answer
Step-by-step explanation:
There are 9.5 ounces of juice in a container. an additional 1.75 ounces of juice are poured into the container each second. how many ounces of juice are in the container after 6 seconds? enter your answer in the box. ounces
Answers
For this case, the first thing we must do is define variables.
We have then:
x: time in seconds
y: number of ounces
We then have an equation of the form:
[tex] y = mx + b
[/tex]
Where,
b: initial amount of juice
m: amount of juice added every second.
Substituting values we have:
[tex] y = 1.75x + 9.5
[/tex]
For 6 seconds later we have:
[tex] y = 1.75 (6) +9.5
y = 20
[/tex]
Answer:
20 ounces of juice are in the container after 6 seconds
What is the least common multiple of 19 and 38?
Answers
In the school band there are 4 trumpet players and f flute players. The total of trumpet and flute players is 12. Are there twice as much flute players as trumpet players? Explain.
Please help me really plz help i need it!
Thanks to those who took time for this....
Answers
Twice are many trumpet players is 8 because you just do
[tex]4 \times 2 = 8[/tex]
so yes, there are twice as many flute players.
yes there is because there is 8 flute players and there are 4 trumpets and 8 is double then 4
The radius of a circular clock face is 13 centimeters. how do i find the circumfrence
Answers
Hence, the circumfrence is [tex]81.64[/tex].
What is the circumference?
Circumference is the distance around a circle. We can find the circumference using either the diameter or radius of a circle. For shapes made of straight lines, we say they have a perimeter.
Here given that,
The radius of a circular clock face is [tex]13[/tex] centimeters.
The general formula of circumference of a circle is [tex]2\pi r[/tex].
As, [tex]r=13cm[/tex]
Substitue these values in the general formula then,
[tex]2\pi r=2(3.14)(13)\\\\=81.64[/tex]
Hence, the circumfrence is [tex]81.64[/tex].
To know more about the circumference
https://brainly.com/question/15533071
#SPJ5
I need your help here! 15 pointa and brainliest. If you cant do it, at least give me the formula to this so I can solve it.
Answers
Answer:
0.40 formula x3.9 standardwise. Sorry if this doesnt help. I tried.
Step-by-step explanation:
PLEASE HELP: 22 points//And brainliest answer.
Picture is above
Answers
Ashley has 77 candies to share with her friends on valentine’s day Ashely Jordan and Nikki share the candy with a ratio of 2 : 8 : 12 respectively how many candies does each person have
Answers
22n = 77
Divide:
n = 3.5
Now we multiply this variable 'n' with their respective numbers:
Ashley : 7 (3.5*2)
Jordan : 28 (3.5*8)
Nikki : 42 (3.5*12)
Find total parts:
Total parts = 2 + 8 + 12 = 22
Find 1 part:
22 parts = 77 candies
1 part = 77 ÷ 22 = 3.5
Find each of their parts:
1 part = 3.5
2 parts = 3.5 x 2 = 7
8 parts = 3.5 x 8 = 28
12 parts = 3.5 x 12 = 42
Answer: Ashley = 7 ; Jordan = 28 ; Nikki = 42
giving away all these points to the lucky person who can explain how to get the answer (Law of Cosines) !!!
Answers
Here, (missing side length)^2 = 9^2 + 6^2 - 2(9)(6) cos (37 deg)
Just evaluate this to find the missing side length.
The exchange rate between non-fixed currencies continuously fluctuates. The following table shows the exchange rate of pounds sterling to Israeli new shekel (plural shekalim) over a period of six days.
Days / £:INS
Monday: 1:6.0333
Tuesday: 1:5.8594
Wednesday: 1:5.7012
Thursday: 1:5.9462
Friday: 1:6.1715
Saturday: 1:6.0896
nate had 88.65 to convert into shekalim. the currency exchange he is using charges an 8% surcharge when converting currency. about how many more shekalim will nate recieve if he makes his trade on the day with the most favorable exchange rate than if he makes his trade on yhe day with the least favorable exchange rate?
Possible Answers
A. INS 41.69
B. INS 38.35
C. INS 31.68
D. INS 6.67
Answers
The correct answer is:
B) INS 38.35
Explanation:
The day with the best exchange rate is Friday; the rate is 1:6.1715. Converting 88.65£ with this rate, we have:
88.65(6.1715) = 547.103475.
Since he is charged an 8% surcharge, he gets to keep 100%-8% = 92% = 92/100 = 0.92 of this:
0.92(547.103475) = 503.335197
The day with the worst exchange rate is Wednesday, with a rate of 1:5.7012. Converting 88.65£ at this rate,
88.65(5.7012) = 505.41138. 4
0.92(505.41138) = 464.9784696
The difference between Friday and Wednesday is:
503.335197-464.9784696 = 38.3567274, or 38.35.
Nate would receive about 38.35 more shekalim if he made his trade on the day with the most favorable exchange rate than if he made his trade on the day with the least favorable exchange rate.
What is Statistics?Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.
The day with the best exchange rate is Friday; the rate is 1:6.1715. Converting 88.65£ with this rate, we have:
88.65(6.1715) = 547.103475.
Since he is charged an 8% surcharge, he gets to keep 100%-8% = 92% = 92/100 = 0.92 of this:
0.92(547.103475) = 503.335197
The day with the worst exchange rate is Wednesday, with a rate of 1:5.7012.
Converting 88.65£ at this rate,
88.65(5.7012) = 505.41138. 4
0.92(505.41138) = 464.9784696
The difference between Friday and Wednesday is:
503.335197-464.9784696 = 38.3567274, or 38.35.
Hence, Nate would receive about 38.35 more shekalim if he made his trade on the day with the most favorable exchange rate than if he made his trade on the day with the least favorable exchange rate.
To learn more on Statistics click:
https://brainly.com/question/30218856
#SPJ5