Answer:
The speed of a wave depends on the characteristics of the medium. For example, in the case of a guitar, the strings vibrate to produce the sound. The speed of the waves on the strings, and the wavelength, determine the frequency of the sound produced. The strings on a guitar have different thickness but may be made of similar material. They have different linear densities, where the linear density is defined as the mass per length,
μ
=
mass of string
length of string
=
m
l
.
In this chapter, we consider only string with a constant linear density. If the linear density is constant, then the mass
(
Δ
m
)
of a small length of string
(
Δ
x
)
is
Δ
m
=
μ
Δ
x
.
For example, if the string has a length of 2.00 m and a mass of 0.06 kg, then the linear density is
μ
=
0.06
kg
2.00
m
=
0.03
kg
m
.
If a 1.00-mm section is cut from the string, the mass of the 1.00-mm length is
Δ
m
=
μ
Δ
x
=
(
0.03
kg
m
)
0.001
m
=
3.00
×
10
−
5
kg
.
The guitar also has a method to change the tension of the strings. The tension of the strings is adjusted by turning spindles, called the tuning pegs, around which the strings are wrapped. For the guitar, the linear density of the string and the tension in the string determine the speed of the waves in the string and the frequency of the sound produced is proportional to the wave speed.
Hope it is helpful to you
Looking to Calculate the rise and run to find the slope of each line !
Need help with question 1, 2 & 3 !
Correct answers please !
Answer:
1.slope = 4/2x 2.slope= -5/4x 3.slope=7/5x
Step-by-step explanation:
Have a great night
What is the slope of the line that passes through the points (-6 , -4) and ( -12 , -4)? Write in simplest form plssss!
Answer:
the slope is zero
Step-by-step explanation:
Answer:
I think that: slope (m) = 0
Step-by-step explanation:
the equation of slope is m = y2-y1/x2-x1
so, y2 = -4, y1 = -4, and x2=-12, and x1= -6
Just substitute them into the equation:
m = -4 - -4 / -12- -16
m = 0
The slope is equal to 0
I hope this helps!
A train leaves New York traveling at a speed of 90 km/hr. How much distance will it cover in five hours?
Answer:
450 Km
Step-by-step explanation:
90 Km/hr x 5 hr = 450 Km
I hope this helped and good luck!
Answer: Distance= 450km
Step-by-step explanation:
90 times 5= 450
The value of y varies directly with x. If x= 3, then y= 21. What is the value of xwhen y= 105
Answer:
15
Step-by-step explanation:
y=21 x 5 = 105
x=3 x 5 = 15
Does the following quadratic equation have a maximum or minimum value? How can
you tell?
y=x^2+2x-3
Answer:
minimum
Step-by-step explanation:
it has a minimum value because it is positive so the graph will show a U shape
patricia wants to have her living room carpet cleaned she found three different companies that would clean the carpet for $198 the companies are each offering discounts on their carpet cleaning services
Answer:
company 1 final price: $148.5
company 2 final price: $168
company 3 final price: $132
thus, the best choice is company 3 because it costs the least and all services are the same
Step-by-step explanation:
company 1 is offering 25% off the price of their service
company 2 is offering $30 off the price of their service
company 3 is offering a 1/3 discount off the price of their service
the price of the cleaning is $198
company 1: 25% discount = 75% of the original price $198, which would be $198 * 3/4, or $148.5
company 2: $30 dollars off, which means $198 - $30 or $168
company 3: 1/3rd discount, meaning the product after the discount is only 2/3rd of the original price. 2/3rd of $198 is $132, so the final price after the discount is $132
The trail starts at P(−7, 6) and goes to Q(4, 6). It goes from Q to R(4, −6) and then to S(6, −6). What is the total length (in units) of the biking trail?
We know, distance between two points A( p,q) and B(r,s) is given by :
[tex]AB=\sqrt{(p-r)^2+(q-s)^2}[/tex]
So, distance between P an Q is :
[tex]PQ=\sqrt{(-7-4)^2+(6-6)^2}\\\\PQ=11\ units[/tex]
Distance between Q and R is :
[tex]QR=\sqrt{(4-4)^2+(6-(-6))^2}\\\\QR=12\ units[/tex]
Distance between R and S is :
[tex]RS=\sqrt{(4-6)^2+(-6-(-6))^2}\\\\RS=\sqrt{4}\\\\RS = 2\ units[/tex]
Therefore, total distance is 11 + 12 + 2 = 25 units.
Hence, this is the required solution.
Gretta played a game in which she could either lose or gain points each round. In the first round, she lost 10 points . In the second round she gained 14 points. Model the changes as a sum of integers
Answer:
Step-by-step explanation:
The points loosed in the first round l = 10 points
Points gained in the second round g = 14points
Let the points loosed be negative while that gained be positive, hence;
l = -10 points
g = +14 points
Change in the integers = l+g
Change in the integers = =-10 + 14
Change in the integers = 4points
Enrique makes $9.25 per hour and worked 30 hours last week. He also makes 10% commission on the $300 of sales he made last week. How much did he make in total for last week?
Answer:
Final answer=$307.50
Step-by-step explanation:
Given:
Money Enrique makes per hour = $9.25
Total time he worked last week = 30 hours
Commission he got for $300 of sales = 10%
So, total amount of money he made in the last week is,
(Wage he gets per hour)×(No. of hours he worked)
=$9.25×30
=$277.50
Now, we have to find the money he made from the sales with commission of 10%,
= (Money made from sales)×(Commission %)
=$300×10%
=300×10/100
=3×10/1
=$30
Now we calculate the total money he made,
(Money made by working)+(Money from commission)
=$277.50+$30
=$307.50
∴Enrique made $307.50 in total from the last week.
Enrique made $307.50 in total from the last week.
What is a percentage?A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.
Enrique makes per hour = $9.25
He worked 30 hours in a week.
Commission he got for $300 of sales = 10%
Total money
=(Wage he gets per hour)×(No. of hours he worked) + money made from the commission
=$9.25×30 + (Money made from sales)×(Commission in percentage)
=$277.50 + $300×10%
= 277.50 + 300×10/100
=$307.50
Therefore, Enrique made $307.50 in total from the last week.
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Some body is there in room.
PLEASE HELP HELP HELP
Answer:
the answer is going to be D
PLS HELP ASAP, I WILL GIVE BRAINLIEST!!!!!!!!
An isosceles triangle (that is a triangle with 2 equal sides and a base of a different length) has a base of 5 centimeters and the other two sides are x centimeters long. The perimeter is no more than 30 centimeters. Write and solve the inequality to find the possible values of x.
Follow this form
77x > 154 ; x > 2
A company makes 130 bags.
49 of the bags have buttons but no zips.
32 of the bags have zips but no buttons.
39 of the bags have neither zips nor buttons.
A bag is selected at random.
What is the probability that the bag has buttons?
130-49 = 81
Answer 81/130
The probability that the bag has buttons is 0.38.
What is the probability?Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.
We know that, probability of an event = Number of favorable outcomes/Total number of outcomes.
Given that, a company makes 130 bags.
Here, the number of favorable outcomes = 49 and the total number of outcomes =130
Now, probability of an event = 49/130
= 0.38
Therefore, the probability that the bag has buttons is 0.38.
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Express the rate as a unit rate and round to the nearest cent if necessary.
$14.00 for 4.5 pounds of beef
Please help
Answer:
789
Step-by-step explanation:
Please help!!! 40 points and will give brainliest!!
Answer:
the answer would be
Step-by-step explanation:
i hope this helped
If you add all four together, you get a %400 increase
What is the sum of 12 1/4and it’s additive inverse ?
Answer:
0
Step-by-step explanation:
The sum of any number and it's additive inverse should always be zero. Thus, 12 1/4 + (-12 1/4) = 0
Hope this helps!
I WILL GIVE BRAINLIEST WHO ANSWERS THIS CORRECT
(Will report foolish answers)
Answer: pretty sure its A
Step-by-step explanation:
Express 40% as a fraction in simplest form
When t = -3
Work out the value of
4t squared – 6
Answer:
-42
Step-by-step explanation:
t^2^=-9
4x-9=-36
-36-6=-42
Answer:
30
Step-by-step explanation:
4(-3)^2-6
4(9)-6
36-6
30
the regular price of a shirt is $40 during a sale a discount of 20% is given calculate the amount a customer pays for d shirt
Answer:
$32
Step-by-step explanation:
0.8*40
Can you please help me
PLS EXPLAIN IN FULL DETAIL
You have $18 to buy peppers. Peppers cost $1.50 each. Write and solve an inequality that represents the numbers of peppers you can buy.
Answer:
1.50x=18
x=12
Step-by-step explanation:
You have to divide 1.50 on both sides and 1.50x/1.50= x and 18/1.50=12 so x=12
Answer:
18dividedby1.50=x
x=12
Step-by-step explanation:
Which angle relationships are correct? Check all that
apply.
21 and 28 are alternate exterior angles.
24 and 26 are same side interior angles.
25 and 27 are vexical angles.
22 and 28 are corresponding angles.
23 and 26 are alternate interior angles.
Answer:
<1 and <8 are alternate exterior angles
<4 and <6 and same said interior angles
<3 and <6 are alternate interior angles
Step-by-step explanation:
The correct options are 1) ∠ 1 and ∠ 8 are alternate exterior angles, 2) ∠ 4 and ∠ 6 are same side interior angles, 4) ∠ 2 and ∠ 8 are corresponding angles and 5) ∠ 3 and ∠ 6 are alternate interior angles, this is true.
What is angle relationship?The amount of space between two straight lines that have a common end point is called angle. Two angles can be related if certain conditions are met.
Given that, lines m and n are intersected by a transversal l, making angles 1, 2, 3, 4, 5, 6, 7 and 8
∠ 1 and ∠ 8 are alternate exterior angles, this is true.
∠ 4 and ∠ 6 are same side interior angles, this is true.
∠ 5 and ∠ 7 are vertical angles, no this is not true because these are making a linear pair angles.
∠ 2 and ∠ 8 are corresponding angles, this is true.
∠ 3 and ∠ 6 are alternate interior angles, this is true.
Hence, the correct options are 1, 2, 4, and 5
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(2x−2)−(2x−4) simplify the equation
Answer:
2
General Formulas and Concepts:
Order of Operations: BPEMDASPropertiesStep-by-step explanation:
Step 1: Define expression
(2x - 2) - (2x - 4)
Step 2: Simplify
Distribute -1: 2x - 2 - 2x + 4Combine like terms: 25x + 6 = 2(2x – 3)
x =
I believe this is algebra and if I correctly remember you have to look at the related numbers and take the symbol to the number on the left and make a problem out of it, if you understand what I mean. so 5x + 2x = 7x and 6 - 3 = 3.
7x = 2(3)I hope you understand what I said and if you do it should help you in future questions. The bold numbers are the answer.
Need help ASAP please give answer in cm squared
Answer:
17×15=255
Step-by-step explanation:
you do base times height
The player hits the ball up in the air with an upward velocity of 18 ft/sec. The equation that gives the height of the ball at any time ’t’ is h(t) = -8t^2 + 18t + 5. How long did it take for the ball to hit the ground?
^2 being squared for those who dont know.
Solving the quadratic equation, it is found that it took 2.5 seconds for the ball to hit the ground.
What is the quadratic equation for the ball's height?It is given by:
h(t) = -8t² + 18t + 5.
It hits the ground when h(t) = 0, hence:
-8t² + 18t + 5 = 0.
Which has coefficients a = -8, b = 18, c = 5, then:
[tex]\Delta = 18^2 - 4(-8)(5) = 484[/tex]
[tex]x_1 = \frac{-18 + \sqrt{484}}{2(-8)} = -0.25[/tex]
[tex]x_2 = \frac{-18 - \sqrt{484}}{2(-8)} = 2.5[/tex]
It took 2.5 seconds for the ball to hit the ground.
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The value of which number lies between 14 and 15?
Answer: 69 hope this helps!
The ratio of boys to girls in a class is 5:3. There are 32 students in the class. How many students are boys?
Answer:
5x+3x=8x
8x = 32
x=32/8 = 4
boys are 4 x 5 = 20
girls are 4 x 3 = 12
Step-by-step explanation:
Add the ratios together: 5 + 3 = 8
Divide total students by 8:
32 / 8 = 4
Multiply each ratio by 4 to find the number of each:
Boys = 4 x 5 = 20
Girls = 3 x 4 = 12
There are 20 boys.
Hello i will give brainiest question is in photo :)
Answer:
A. 30 meters
Step-by-step explanation:
C=2πr
188=2πr
29.92 = r
≈ r
