Answer:
The value of I for d = 10 will be 1.2 watts/m^3
Step-by-step explanation:
Let I be the intensity of sound and d be the distance
According to given statement, "The intensity of the sound, I watts/m², received from a loudspeaker is inversely proportional to the square of the distance, d meters, from the loudspeaker. "
[tex]I \propto \frac{1}{d^2}[/tex]
Removing the proportionality symbol
[tex]I = \frac{k}{d^2}[/tex]
Putting d = 2 and I = 30
[tex]30 = \frac{k}{(2)^2}\\30 = \frac{k}{4}\\k = 30*4\\k = 120[/tex]
Putting the value of k in the equation
[tex]I = \frac{120}{d^2}[/tex]
Putting d = 10
[tex]I = \frac{120}{(10)^2}\\I = \frac{120}{100}\\I = 1.2[/tex]
Hence,
The value of I for d = 10 will be 1.2 watts/m^3
Desiree writes songs for her band. her first song is 3 1/2 minutes long. Her second song is 1 1/2 times as long as her first song. her third song is 2/3 times as long as her second song. How many minutes long are the second and third songs?
A company that makes hair-care products had 8,000 people try a new shampoo. Of the 8,000 people, 32 had a mild allergic reaction. What percent of the people had a mild allergic reaction?
Answer:
i think it 0.4%
Step-by-step explanation:
Please help, I’m so close to passing math
Answer:
I believe it is the last choice
Step-by-step explanation:
square have equal sides area= length x width
9x9=81
6x6=36
9 to power 2 is 81
6 to power 2 is 36
So the equation is 81-36
Answer: its the last choice i literally just took that test
Step-by-step explanation:
A customer wants to book a room with a seaview.
You show her 4 options but only 3 have sea views.
What fraction has a seaview?
The total surface area of this cuboid is 76 cm.
Find the value of x.
x cm
4 cm
5 cm
Answer:
76×5+4
380+4=384
Ok I’ll ask again cuz one of them said tomorrow and I should watch Jojo something lol so here’s the question shall I k^^* myself today or tomorrow
Answer:
never:)
Step-by-step explanation:
Answer:
Never! You are loved and have a purpose in life. Times may be hard at the moment but everything will get better.
Step-by-step explanation:
The function Y=4.75+2.20(X-1) can be used to determine the cost in dollars for a taxi ride in Houston, TX. What is the rate of change of the cost in dollars with respect to the number of miles?
Answer:
2.20 dollars/mile
Step-by-step explanation:
Given the function:
y = 4.75 + 2.20(x-1)
Before we get the rate of change of the cost, we need to write the expression in the form y = mx+c where;
m is the rate of change of the cost
From the function given:
y = 4.75 + 2.20(x-1)
Open the parenthesis
y = 4.75 + 2.20x -2.20
y = 2.20x + 2.55
On comparing with the standard
m = 2.20
Hence the rate of change of the cost in dollars with respect to the number of miles is 2.20 dollars/mile
5cd.(-cd)
Monomials and polynomials
true or false need help asap 67%
33%
32% which one is true
Answer:
You need to attach something to this?
Step-by-step explanation:
I could help you but theres nothing here to see?
a) This problem involves 8-digit binary strings such as 10011011 or
00001010.
i How many such strings are there?
ii. How many such strings end in 0?
iii. How many such strings have l's for their second and fourth digits?
iv. How many such strings have l's for their second or fourth digits?
b) Find how many 9-digit numbers can be made from the digits 1, 2, 3, 4, 5, 6,
7, 8, 9 if repetition is not allowed and all the odd digits occur first (on the
left) followed by all the even digits.
c) How many permutations of the letters A, B, C, D, E, F, G are there in which
the three letters ABC appear consecutively, in alphabetical order?
Answer:
a)
i) With an eight digit binary number, there are 2⁸, or 256 possible combinations.
ii) Each digit is set to 1 or 0 for exactly half of all combinations. This means that half of all strings, or 256 / 2 = 128 strings end with a zero.
iii) 3/4, or 128 + 64 = 192 of the combinations have a 1 for either the second or fourth digit. If you consider:
Half of all digits will have the second bit set to 1
Half of all digits will have the fourth bit set to 1
Half of those will overlap
Then that's half the digits, plus half the digits, minus half of half the digits. 1/2 + 1/2 - 1/4 = 3/4
iv) This is a duplicate of iii, so again, 192
b) If we're allowed to repeat the usage of the digits, then answer would be the number of values available to the power of the number of digits used. We're allowed six distinct digits, so the total combination of 9 digit numbers would be 6⁹, or 10077696
c) In this case we can look at it simply as permutations of the set {"ABC", "D", "E", "F"}, which gives us 4! which equals 24
Subtract the number 6498 from the product of six doubles, four triples and one five. Which number did you get?
Answer:
the answer will be 132
Step-by-step explanation:
''.''
Answer:
2142
Step-by-step explanation:
product of six doubles, four triples and one five: 2*2*2*2*2*2*3*3*3*3*5 =8640
8640 - 6498 = 2142
Wish this is right.
Can someone help me with this question?
36x245
An architect is drawing a house with a living room measuring 18 feet in length. On the blueprint, the length of the living room is 9 inches. What is the correct scale on the architect’s blueprint?
Group of answer choices
1.5 inches = 2 feet
1.5 inches = 3 feet
1.5 inches = 3.5 feet
1.5 inches = 162 feet
Answer:
i think it is 3.5 and 3
Step-by-step explanation:
Cost of shoes $29.95
Markup: 20%
What is the new cost?
New cost = original price x (1 + markup)
New cost = 29.95 x ( 1 + 0.20)
New cost = $35.94
Suppose a friend tells you she paid a total of $20,500 for a car, and you’d like to know the car’s list price (the price before taxes) so that you can compare prices at various dealers. Find the list price of the car if your friend bought the car in:
Roswell, where the sales tax is 6.5%
Given :
Total amount paid for the car is, A = $20,500.
Sales tax is 6.5%.
To Find :
The list price i.e. price without tax.
Solution :
Let, list price is P.
P = A - 0.65A
P = A( 1 - 0.65 )
P = 20500×( 1 - 0.065 )
P = $19167.5
Therefore, the list price of car is $19167.5 .
PLEASE ANSWER 16 17 18 CORRECTLY I WILL MARK BRAINLIST
Answer:
A A B
Step-by-step explanation:
Paul withdrew $17.25 from his savings account every week for 3 weeks. Which equation is the best choice to help him determine the total amount of money he withdrew?
Answer: (3)(−17.25) = −51.75; he withdrew $51.75
Step-by-step explanation:
hope it helped xx
Alex has 21 marbles. Zach has 19 times as many marbles as Alex. How many marbles does Zach have?
Answer:
399
Step-by-step explanation:
Zach has 21 * 19 marbles
Answer:
zach has 399 marbles
Step-by-step explanation:
according to the caluation
simplify pls
8(4x-12)
Answer:
32x-96
Step-by-step explanation:
8 · 4x = 32x
8 · 12 = 96
Write an algebraic expression for each verbal description. a number
!!please help me my assignment is due today at 9!!!
Thirty percent of the green house flowers are added to 25 ferns for the
school garden.
The algebraic expression is 0.3G+25F
What are algebraic expression?An algebraic expression is a sentence with a minimum of two numbers or variables and at least one mathematical operation.
First, we can use G to represent green house flowers and F to represent ferns.
Then thirty percent of the green house flower can be represented by 0.3G.
25 ferns can be written as 25F.
The algebraic expression for the given verbal description is 0.3G+25F.
To learn more about algebraic expressions, use the below link:
https://brainly.com/question/953809
#SPJ5
The perimeter of the triangle below is 10x - 3
Show how to solve
What's the best app for graphing answers like domain y intercept all those things
Answer: it’s not an app but desmos graphing calculator works for me
Step-by-step explanation:
Anyone know the answer?
Answer:
5 feet = 152.4 centimeters 10 inches =25.4
Step-by-step explanation:
I learned from my classes of how to convert feet to centimeters and etc.
(-5b^3) (-3b^6)
Solve the equation
Answer: 15b^9
Explanation:
-5*-3=15
b^3*b^6=b^9
Simplify.
3y - 4x + 6x - y
The simplified expression is???
Answer:
2y-4x+6x
=2y+2x
Step-by-step explanation:
Answer:
2x+2y
Step-by-step explanation:
Let's simplify step-by-step.
3y−4x+6x−y
=3y+−4x+6x+−y
Combine Like Terms:
=3y+−4x+6x+−y
=(−4x+6x)+(3y+−y)
=2x+2y
Define the domain and range of the relation. (MAFS.912.F-IF.2.4)
{(2,3), (0, 3), (4, 2), (5, 6)}
domain
range
True or False: If an equation has different slopes, it has no solution.
Answer:
it's true. because it has more type of sums and head pain will come
Answer:
When two equations have the same slope but different y-axis, they are parallel. Since the two equations never intersect, the system has no solutions.
you can decide your answer from that explanation!
Five full creates of walnuts weigh 195 pounds, whereas an empty crate weighs 10 pounds. How much do the walnuts alone weigh?
Mrs. Rodrigues was selling two kinds of raffle tickets for $1.50 and $3.50. The number of $1.50 tickets sold was 5 more than three times the number of $3.50 tickets sold. She earned a total of $1,607.50. How many $1.50 tickets were sold?
$1.50 tickets
Answer:
605
Step-by-step explanation:
Answer:
the answer would be 605!!!
Step-by-step explanation:
hope this helps!!
Whoever answers first, I will give Brainliest! :)
Answer: b there are 12flasses
Step-by-step explanation: