Answers
Answer:
[tex]a = \frac{8A}{\pi {r}^{2} } + 1 \\ [/tex]Step-by-step explanation:
[tex]A = \frac{1}{8} \pi {r}^{2} (a - 1) \\ [/tex]
First of all multiply through by 8 to eliminate the fraction
That's
[tex]8A = 8 \times \frac{1}{8} \pi {r}^{2} (a - 1) \\8 A = \pi {r}^{2} (a - 1)[/tex]
Divide both sides by πr²
[tex] \frac{8A}{\pi {r}^{2} } = \frac{\pi {r}^{2}(a - 1) }{\pi {r}^{2} } \\ a - 1 = \frac{8A}{\pi {r}^{2} } [/tex]
Move 1 to the other side of the equation to make a stand alone
We have the final answer as
[tex]a = \frac{8A}{\pi {r}^{2} } + 1 \\ [/tex]
Hope this helps you
Answer:
a = (8A)/(\pi r^(2))+1
Step-by-step explanation:
Related Questions
Please help with geometry,will give brainliest
Answers
Answer:
90
Step-by-step explanation:
i think
Is there anything in the study that lead you to believe that lacks Validity? explain your answer
Answers
2.111 (4 points) An art dealer receives a shipment of five old paintings from abroad, and, on the basis of past experience, she feels that the probabilities are, respectively, 0.76, 0.09, 0.02, 0.01, 0.02, and 0.10 that 0, 1, 2, 3, 4, or all 5 of them are forgeries. Since the cost of authentication is fairly high, she decides to select one of the five paintings – 2– MATH-4751/6751, Fall-2020 Homework #3 at random and send it away for authentication. If it turns out that this painting is a forgery, what probability should she now assign to the possibility that all the other paintings are also forgeries?
Answers
Answer:
0.675675675 = 67.57%
Step-by-step explanation:
P(P₀) = 0.76
P(P₁) = 0.09
P(P₂) = 0.02
P(P₃) = 0.01
P(P₄) = 0.02
P(P₅) = 0.1
P(F) is the probability that the first painting is a forgery
P(F | P₀) = 0
P(F | P₁) = 0.2
P(F | P₂) = 0.4
P(F | P₃) = 0.6
P(F | P₄) = 0.8
P(F | P₅) = 1
P(P₅ | F) = [P(F | P₅) x P(P₅)] / {[P(F | P₁) x P(P₁)] + [P(F | P₂) x P(P₂)] + [P(F | P₃) x P(P₃)] + [P(F | P₄) x P(P₄)] + [P(F | P₅) x P(P₅)]}
P(P₅ | F) = (1 x 0.1) / [(0.2 x 0.09) + (0.4 x 0.02) + (0.6 x 0.01) + (0.8 x 0.02) + (1 x 0.1)] = 0.1 / (0.018 + 0.008 + 0.006 + 0.016 + 0.1) = 0.1 / 0.148 = 0.675675675 = 67.57%
(x^-1y^3 •2xy^-2)^-2
algebra 2 expontets
Answers
What is the value of f (-2) when f (x)=-2 (3 +x)?
Answers
Answer:
-2
Step-by-step explanation:
f(x) = -2(3 + x)
f(-2) = -2(3 + (-2))
f(-2) = -2(1)
f(-2) = -2
Best of Luck!
Step-by-step explanation:
f(-2)=2(3+-2)
f(-2)= -2
Write and evaluate the expression. Then, select the correct answer. Ten times the sum of seven and a number; evaluate when j= 1
Answers
Answer:
10(7 + j); when j = 1, the value is 80
Step-by-step explanation:
i did the assignment
Answer:
The one were the value is 80 so D
Step-by-step explanation:
Definitely stole from someone else but I got it right:)
I need help pls provide with the explanation too ty!
Answers
Answer:
A.-7
B. 36
C. -12
Step-by-step explanation:
A.112 divided by 16
B.Minus times minus = plus
9 times 6 =36
48 divided by 4= 12
Minus (-) divided by plus (+) is minus
Pls mark as brainliest
Evaluate n + 5/5
When n= -10
Answers
Answer:
n + 5/5 = -9
Step-by-step explanation:
Answer:
see below
Step-by-step explanation:
If the problem is
(n+5) /5
Let n = -10
(-10+5)/5
-5/5
-1
or if
n+ 5/5
-10 + 1
-9
Why does the graph of the absolute value function have the "V" shape?
Explain using an example.
Answers
Answer:
all of the function values of an absolute value function will be non-negative.
840 students attend Northfield middle school. 65%of students earned a perfect attendance award. How many students didn't earn the award?
Answers
Answer:
546
Step-by-step explanation:
840 x 0.65 = answer .. in this case 546
Nine more than a number divided by six
Answers
Answer:
x/6+9
Step-by-step explanation:
you are adding 9 to a number divided by six. you don't know the number so you put x. x divided by 6 can be put as a fraction with x/6 or x over 6. you then have x/6, and you need to add 9. it ends up being x/6 + 9
You are walking down an empty street and find a bank bag with $100,000 inside of it, what do you do? Why? If you are seeing a group of friends that night and have to tell them the story, what would they think of your decision?
Answers
Answer:
Take it back to the bank. Of course most people would say that it is just the right thing to do, which it is but that is not it. It also shows good character and proves that you also know what to do no matter the situation. I believe that if they are good friends they will be proud of you for taking the high road of this decision. And who knows you may even be rewarded in the end!
Step-by-step explanation:
2 hundreds and 2 thousandths in decimal form?
Answers
Answer:
0.022
Step-by-step explanation:
let me explain the number before the decimal is the whole number now what ever is behind the decimal izs a decimal for example 0.1 is 0 and the .1 is the tenth
17q^3 + 216q^3 algebra question
Answers
Answer:
233q^3
Step-by-step explanation:
You just have to plus both of them like 17+216 which is 233 because powers are same on both numbers and the variable would be simply copied.
What is the midpoint of segment EF? E(-8,1) and F(1,1
Answers
Answer:
The answer is
[tex]( - \frac{7}{2} \: , \: 1) \\ [/tex]Step-by-step explanation:
The midpoint M of two endpoints of a line segment can be found by using the formula
[tex]M = ( \frac{x1 + x2}{2} , \: \frac{y1 + y2}{2} )\\[/tex]
where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
E(-8,1) and F(1,1)
The midpoint is
[tex]M = ( \frac{ - 8 + 1}{2} \: , \: \frac{1 + 1}{2} ) \\ = ( - \frac{7}{2} \: , \: \frac{2}{2} )[/tex]
We have the final answer as
[tex]( - \frac{7}{2} \: , \: 1) \\ [/tex]
Hope this helps you
Step-by-step explanation:
Hey there!
The given points are; (-8,1) and F (1,1). Let M(x,y) be the midpoints.
Now,
Using midpoint formulae.
[tex](x,y) = ( \frac{x1 + x2}{2} , \frac{y1 + y2}{2} )[/tex]
Put all values.
[tex](x,y) =( \frac{ - 8 + 1}{2} , \frac{1 + 1}{2} )[/tex]
Simplify it to get answer.
[tex](x,y) = ( \frac{ - 7}{2} , \frac{2}{2}) [/tex]
[tex](x,y) = (\frac{ - 7}{2} ,1)[/tex]
Therefore the slope is M(-7/2,1).
Hope it helps...
A powerful microscope is used to
measure the diameter of a specific
red blood cell. The diameter is
0.000006834 meter. Express this
measurement in scientific notation.
Answers
Answer:
6.834 x 10^-6 meters
Step-by-step explanation:
Answer: 6.834 × 10-6
Step-by-step explanation: To get 0.000006834 we have to times 6.834 by 10 with a negative exponent. Since there are 6 zeros we know it will be 10^-6.
I need this ASAP please
Answers
Answer:
y = 1/2
Step-by-step explanation:
(12y-1)/2 = (9y+8)/5
5 (12y-1) = 2 (9y+8)
60y - 5 = 18y + 16
60y - 18y = 16 + 5
42y = 21
y = 21/42
y = 1/2
y = 0.5
The answer to this question is D) 1/2.
How to solve this:
Step 1: Cross-multiply.
12y-1/2 = 9y+8/5
(12y - 1) * (5) = (9y + 8) * (2)
60y - 5 = 18y + 16
Step 2: Subtract 18y from both sides.
60y - 5 - 18y = 18y + 16 -18y
42y − 5 = 16
Step 3: Add 5 to both sides.
42y - 5 + 5 = 16 + 5
42y = 21
Step 4: Divide both sides by 42.
42y/42 = 21/42
y = 1/2
Solve the following equation for x.
Answers
Step-by-step explanation:
t=(f+k)x
(f+k)x=t
x=t/(f+k)
6 (2x - 7) + 4 (2x + 4)
Answers
Answer: 20x-26
Step-by-step explanation: its hard to explain
Answer:
20x - 26
Step-by-step:
6(2x-7) + 4(2x+4)
12x - 42 + 8x + 16
20x - 26
Good Luck
Please answer I will brainliest
Answers
Greetings! Hope this helps!
Answer
400
x 80
---------
32,000
Have a good day!
_______________
A brainliest would help tons! :D
PLEASE HELP FAST-----------Passes through the point (-2, 0) and is perpendicular to the line y=-9
Answers
Answer: x = -2
Step-by-step explanation:
A line perpendicular to y= (anything) is ....... x = ____
Since it must pass through a coordinate x = -2, y = 0
then the equation of the line is: x = -2
According to the Income section shown below from the 1040EZ form, if a
married couple filing their federal income tax return jointly enters $18,100 on
line 4 for adjusted gross income, what would they enter on line 6 for their
taxable income? Assume that nobody can claim either spouse as a
dependent.
A.18,700
B.0
C.8,750
D.600
Answers
Answer:
B.$0
Step-by-step explanation:
Answer:0
Step-by-step explanation:
Andres works 20 hours per week at a part-time job. His original pay rate was $10.00 per hour, but he recently received a pay raise of x dollars per hour. His new total weekly pay, y, is represented by the equation y=20(10+x).
If Andres earned $210 last week, what was the amount of Andres' raise per hour?
Answers
Answer:
50 cents / hour.
Step-by-step explanation:
y=20(10+x)
210 = 20(10 + x)
210 = 200 + 20x
20x = 10
x = 0.5.
Answer: $0.5
Step-by-step explanation:
Pay for week = 20h × $10
$200
Raise = x
New weekly pay = y = 20 (10+x)
Last week = $210
$210 = 20 (10+x)
$210 ÷ 20 = 10+ x
10.5-10 = x
$0.5 = x
4)
4)
Determine the distance between -3 and 6.
A) -9 units
B) -3 units
C) 3 units
D) 9 units
Answers
you're answer is:
D) 9 units
whats the square root of negative 144
Answers
Answer:
12i
Step-by-step explanation:
Answer:
12i
Step-by-step explanation:
√-1 = i
Step 1: Write expression
√-144
Step 2: Factor out -1
√-1 · √144
Step 3: Simplify
i · 12
12i
Last year at a certain high school, there were 50 boys on the honor roll and 100 girls
on the honor roll. This year, the number of boys on the honor roll decreased by 8%
and the number of girls on the honor roll decreased by 15%. By what percentage did
the total number of students on the honor roll decrease? Round your answer to the
nearest tenth (if necessary).
Answers
Answer:
21.6% ( THIS IS WHAT DELTA MATH TOLD ME AFTER THE OTHER ANSWER WAS WRONG)
Step-by-step explanation:
84(1−0.25)=63
50(1−0.16)=42
Last Year This Year
Boys 84 63
Girls 50 42
Total 134 105
Find overall decrease:
134(1-r)=105
134(1−r)=105
134
134(1−r)
=
134
105
1-r=0.783582
−r=−0.216418
Subtract 1
r=0.216418
Divide by -1
21.6\%
Final Answer: 21.6%
Multiply by 100 and round to nearest 10th
What is the difference between an estimator and an estimate? A. An estimator is a function of a sample of data to be drawn randomly from a population whereas an estimate is the numerical value of the estimator when it is actually computed using data from a specific sample. B. Both an estimator and an estimate are functions of a sample of data to be drawn randomly from a population. C. Both an estimator and an estimate are numerical values computed using data from a specific sample. D. An estimate is a function of a sample of data to be drawn randomly from a population whereas an estimator is the numerical value of the estimator when it is actually computed using data from a specific sample. Determine whether the following are examples of estimators, estimates or neither. A. . estimator estimator estimate neither B. . estimate estimate neither estimator C. . neither neither estimator estimate D. . estimate neither estimate estimator E. . estimate estimate neither estimator
Answers
Answer: A. An estimator is a function of a sample of data to be drawn randomly from a population whereas an estimate is the numerical value of the estimator when it is actually computed using data from a specific sample.
Step-by-step explanation: The estimator is simply used to on obtaining an estimate from a sample of data. Thus, the estimator may be described as a function built according to a set of defined rules and statistical component which is used to infer a numerical value of an estimate from a given sample of observed data. Hence, the estimator may be regarded as the function or rules adopted in our quest to obtain an estimate for a given population from a sample of data. The value obtained for the mean of a sample of data is called an estimate of the population, the rules for Deriving the estimated value is called the estimator.
Answer:
It's A?
Step-by-step explanation:
Determine if each graph below represents a function. Then state its domain and range.
Only need 11, 13, and 15
Answers
Answer: None of those are functions
Step-by-step explanation: They all fail the vertical line test. x values do not repeat. Those intersect more than one pint on the relationship if you were to take a line and move it across the graph.
If x/3= 8 , then x=24
Answers
Answer:
Yes, x = 24
Step-by-step explanation:
Step 1:
x/3 = 8 Equation
Step 2:
x = 8 × 3 Multiply 3 on both sides
Answer:
x = 24
Hope This Helps :)
The sum of 3 and a number is less than 5 times the number plus 2
Answers
Answer:
The number is 3
Step-by-step explanation
Let x be the unknown number
"3 less than 5 times a number" -->
5
x
−
3
"number increased by 9" -->
x
+
9
The sum of 24
5
x
−
3
+
x
+
9
=
24
6
x
+
6
=
24
6
x=
18
x
=
3
Therefore, the number is 3
