Answers
Related Questions
The relationship between the intensity of sound((w)/(m^(2)))and the distance from the source of sound is represented by the equation (i)=((k)/(d^(2))).If you sit only one meter away from the stage at a rock concert the intensity of sound is about 0.1(w)/(m^(2)). If vanessa does not want the sound intensity to be more than 0.001(w)/(m^(2)) how close to the stage can she sit?
Answers
Answer:
10 m
Step-by-step explanation:
We are given that the relationship between intensity of sound and distance from the source is given by
Intensity (I)=[tex]\frac{k}{d^2}[/tex]
Where I=Intensity
d=Distance of sound from the source
If distance d=1m
Intensity, I=0.1[tex]w/m^2[/tex]
We have to find how close she can to the stage if vanessa does not want the sound intensity to be more than 0.001(w)/(m^(2)).
Using the formula
[tex]0.1=\frac{k}{1}[/tex]
[tex]k=0.1[/tex]
[tex]\frac{0.1}{d^2}\leq 0.001[/tex]
[tex]\frac{0.1}{0.001d^2}\leq 1[/tex]
[tex]\frac{0.1}{0.001}\leq d^2[/tex]
[tex]100\leq d^2[/tex]
[tex]10\leq d[/tex]
[tex]d=10 m[/tex]
Hence, she can sit 10 m away from the stage.
Evaluate 6 + a when a = 7. The value is
Answers
Answer:
13
Step-by-step explanation:
6 + 7 = 13
When a = 7, the value of 6 + a is 13.
To evaluate the expression 6 + a when a = 7, we substitute the value of a into the expression:
6 + a = 6 + 7.
Now, we can simplify the expression by adding the numbers:
6 + 7 = 13.
Explanation:
In the expression 6 + a, the variable a represents an unknown value. By substituting a = 7 into the expression, we replace the variable with its corresponding value.
This allows us to perform the arithmetic calculation to find the result.
Therefore, when a = 7, the value of 6 + a is 13.
Learn more about expression click;
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Madison purchased 3 gallons of milk. How many one-cup servings are equivalent to 3 gallons
Answers
Answer:
48 cups
Step-by-step explanation:
there's 16 cups per gallon so 16 x 3
Answer:
48 cups
Step-by-step explanation:
there are apx. 16 cups of milk in one gallon.
16 times 3 = 48
Find the value of x 8.5,9,7.5,6,7,x ;the mean is 8
Answers
Answer:
x= 10
Step-by-step explanation:
Mean is the sum of all values divided their number
(8.5+ 9 + 7.5 + 6 + 7 +x) / 6 = 8
(8.5+ 9 + 7.5 + 6 + 7 +x) = 8*6 = 48
(8.5+ 9 + 7.5 + 6 + 7 +x) =48
(38 +x) = 48
x= 48-38 = 10
Value of g, h, k, m. Please!!
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Answer:
H = 137, by linear pair postulate
G = 43, by vertical angles theorem
M = 49, by linear pair postulate
K = 131, by vertical angles theorem
A science class has to maintain a ratio of boys to girls of 2 to 3. How many boys and girls would be in a class of 125 students?
Answers
Answer:
73;76
Step-by-step explanation:
I urgently need help!!!!
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Answer: 2m, m
Hope this helps.
A large company states in its promotional literature that 74% of its employees have college degrees. Assume this claim is true. If 3 employees are selected at random from this company, what is the probability that at least 1 of the selected employees will not have a college degree?
A. 0.0176
B. 0.4052
C. 0.5948
D. 0.9284
Answers
Answer:it is 0.5948
Step-by-step explanation:c
The probability that at least 1 of the selected employees will not have a college degree is 0.594776.
What is Binomial distribution?A common discrete distribution is used in statistics, as opposed to a continuous distribution is called a Binomial distribution. It is given by the formula,
[tex]P(x) = ^nC_x p^xq^{(n-x)}[/tex]
Where,
x is the number of successes needed,n is the number of trials or sample size,p is the probability of a single success, andq is the probability of a single failure.Given that 74% of the employees have degrees, therefore, 26% of the employees have no degree.
Now, since we want at least any one of the three people selected to have a degree. Therefore, the probability of everyone having a degree can be written as,
Probability that at least any one of the three people selected to have a degree = 1 - Probability of everyone having a degree
Now, using the binomial distribution we can write,
[tex]\text{Probability} = 1 - [^3C_0\cdot(0.26)^0 \cdot (0.74)^{(3-0)}]\\\\\text{Probability} = 1 - 0.405224 = 0.594776[/tex]
Hence, the probability that at least 1 of the selected employees will not have a college degree is 0.594776.
Learn more about Binomial Distribution:
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SOMEONE PLEASE HELP ME T-T
Shania has 12 coins in her pocket. Of these coins, 5 are pennies and 7 are dimes. Shania randomly selects one coin from her pocket and, without replacing it, selects another coin from her pocket. What is the probability that both coins are dimes?
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Answer:
10/12
Step-by-step explanation:
Answer:
10/12
Step-by-step explanation:
What is the circumference of the following circle?
Answers
C=2(pie)5
C=31.42
Answer:
31.4 units
Step-by-step explanation:
Formula
C = 2πr
C = 2π5
C = 2 * 3.14 * 5
C = 6.28 * 5
C = 31.4
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Some number added to -12 is 36. Add this number to -15. Then multiply this
number by 2. What is the final number?
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x=48
48-15=33
33 times 2 is 66
Compare the two ratios, is 2/5 and 4/10 equal? Remember to simplify
Answers
Answer:
YES
Step-by-step explanation:
2/5 =? 4/10
Get the same demonimator (bottom number of fraction):
2/5 multiply top and bottom by 2 to get 10 on bottom.
4/10 = 4/10
Yes they equal each other.
----------------------------------------------------------------------------------------------------------------
2/5 =? 4/10
Get the same demonimator (bottom number of fraction):
4/10 divided both top and bottom by 2 to get 5 on bottom
2/5=2/5
Yes they equal each other.
Will mark brainlyist! Please help
What is the 100th term of the sequence with a1 = 222 and d = -5?
A: -278
B: 722
C: 717
D: -273
Answers
Answer:
A
Step-by-step explanation:
Since it's the 100th term you multiply -5 by 100 and then you add the number together
Answer:
D: -273Step-by-step explanation:
Use the nth term formula:
aₙ = a₁ + (n - 1)dSubstitute values:
a₁₀₀ = a₁ + 99d a₁₀₀ = 222 + 99(-5) = -273Correct choice is D
the width of a rectangle is 2/3 length, The perimeter of the rectangle is 100 ft. What is the width, in feet, of the rectangle.
Answers
Answer:
The width would be 20 and the length would be 30
Step-by-step explanation:
due today plzzz help
Answers
Answer:
Increasing
Step-by-step explanation:
1/4 = .25
1/2 = .50
3/4 = .75
Jessica purchased a $49.00 gift card for a baby shower. She uses a coupon that offers 20% off. How much will Jessica spend on the gift AFTER the coupon? *
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The answer is 49/100 so .49 then multiply by 80 to get the reduced price so 39.20
You heard it as a FRACTION! please answer this lol I'm clueless :'D
Answers
Answer:
[tex]\frac{a}{b + 2}[/tex]
a
___
b + 2
How do I find the slope
Answers
Answer:
Slope is -1
Step-by-step explanation:
Use the equation y = mx + b
Find the y-intercept (b) intersecting point on the y-axisGraph it and you'd get 10Choose any x and y points from the table. I'll choose (5,5) Substitute: 5 = 5m + 10Solve for m --> m = -1Your slope is -1Is it true or false?
Answers
Answer:
True
Step-by-step explanation:
Circumference is diameter x [tex]\pi[/tex]
When you divide [tex]\pi[/tex], you get diameter
pls help me with this multiple choice !
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Answer:
A
Step-by-step explanation:
[tex] \tan(60) = \frac{13 \sqrt{3} }{y} \\ y = \frac{13 \sqrt{3} }{ \tan(60) } = 13 \\ \cos(60) = \frac{13}{x} \\ x = 26[/tex]
This is geometry pls help will mark brainliest!!
Answers
The Correct Answer Should Be - 70
I Hope This Helps You!!! :)
Answer:
- 70
Step-by-step explanation:
Joseph is saving his money. He currently has $5, and his dad gives him $2 each week. Which type of function would best represent?
Answers
Answer:
d) linear
Explanation:
Since Joseph is always getting the same amount of money the function will be linear.
PLZ HURRY!!!!
Which statement correctly describes the diagram?
A) Triangle B is a reflection of triangle A across the x-axis. Triangle C is not a reflection of triangle A.
B) Triangle B is a reflection of triangle A across the y-axis. Triangle C is a reflection of triangle A across the line y = x + 3.
C) Triangle B is a reflection of triangle A across the y-axis. Triangle C is not a reflection of triangle A.
D) Triangle B is a reflection of triangle A across the x-axis. Triangle C is a reflection of triangle A across the line y = x + 3.
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7y - 9 = 3y + 19
a. 7
b. -4
C.
-7
d. 4
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so y=7
Some help with this
Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage rate of increase or decrease.
y= 96(1.08)
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Answer:
Growth
Step-by-step explanation:
Can anyone help me answer these box plot questions?
Answers
Answer:
1. false
2. true
3. true
4. false
5. true
6. true
7. true
8. false
9. true
Step-by-step explanation:
trust me
What does 2/3 + 1/3 + 5/3 =?
Answers
Answer:
2 and 2/3
Step-by-step explanation:
that is the answer
Answer:
8/3
Step-by-step explanation:
Since all of them have like denominators we should just add
[tex]\frac{2}{3}+\frac{1}{3} +\frac{5}{3}[/tex] = [tex]\frac{8}{3}[/tex]
6+n/5=9
What is happening to the variable?
How do you solve for the variable?
Answers
Answer:
n=15
Step-by-step explanation:
(subtract 6 from both sides of the equation.)
6+n/5=9
6+n/5-6=9-6
(Now you will have to simplify.)
n/5=3
(You will have to multiply all terms by the same value to eliminate fraction denominators.)
n/5=3
5xn/5=5x3
(You will now have to simplify.)
n=15
And that's how you get your answer.
i hope this helps. :)
Measure and record the length of each side of parallelogram ABCD.
Answers
Answer:
Side Length
AB = 3.61
BC = 2.0
CD= 3.61
AD = 2.0
Step-by-step explanation: plato answer
Answer:
AB = 3.61
BC = 2.0
CD= 3.61
AD = 2.0
Step-by-step explanation:
15,25,45,_,115,165
What’s the pattern?
Answers
Answer:
15, 25, 45, 75, 115, 165.
Step-by-step explanation:
pattern. So then you just stick the 5s back on 15, 25, 45, 75, 115, 165.
