What would you estimate for the length of a bass clarinet, assuming that it is modeled as a closed tube and that the lowest note it can play is a Db whose frequency is 69.3 Hz

Answer:

Step-by-step explanation:

Given:

[tex]\frac{AD}{DC}=\frac{BE}{EC}[/tex]

To Prove:

AB║DE

Solution:

Since, corresponding sides of ΔACB and ΔDCE are proportional,

[tex]\frac{AD}{DC}=\frac{BE}{EC}[/tex]

Both the triangles will be similar.

ΔACB ~ ΔDCE [By SAS property of similarity]

Therefore, ∠1 ≅ 2 [CPCTC]

Since, ∠1 and ∠2 are the corresponding angles

Therefore, AB║DE [Converse of corresponding angles theorem]

Answer:

12.2h + 18.2 yd^2.

Step-by-step explanation:

Surface area = 2hl + 2hw + 2lw   where h = height, w = width and l = length.

= 2 * 2.6h + 2 * 3.5h + 2*2.6*3.5

=  5.2h + 7h + 18.2

= 12.2h + 18.2.

Answer:

p=60 and k=120

Step-by-step explanation:

So, with supplementary angles, there is a max of 180 degrees (because it is half of a circle.) With this information, we can make an equation. Let's make it.

If the measure of k is twice of p, then k=2p

Equation= 2p+p=180

Now let's isolate p and find out what it is!

2p+p=3p so...

3p=180

Now let's divide 3 on both sides.

That would equal...

p=60

That means p=60 for sure. However, since k is twice of p, we need to double p to find out what k is.

60 x 2=120

Final answer= p=60      k=120

Hope this helped!! If you have any questions, make sure to write them in the comments!

Answer:

k = 120

p = 60

Step-by-step explanation:

k = p2

p+p2 = 180

p3 = 180

p3/3 180/3

p = 60

k = 60 × 2

k = 120

Answer:

3/4 x 56 = 42 = Joe

2/7 x 42 = 12 = Keith

Clue: the word 'of ' tells us that we need to multiply.

9514 1404 393

Answer:

  x = 6.4

Step-by-step explanation:

The corresponding sides are proportional, so we have ...

  horizontal/vertical = x/(5+3) = 4/5

  x = 8(0.8) = 6.4 . . . . . . multiply by 8

Answer:

72

Step-by-step explanation:

When you multiply 9 and 5 you get 45. When you subtract 6 from 24 you get 18.

45 + 18 = 72

If helpful please mark me brainliest!

The correct expression for the sum of the product of 9 and 5 and the difference of 24 and 6 will be (9 × 5) + (24 -6) which will be equal to 63.

Mathematical actions are called expressions if they have at least two terms that are related by an operator and include either numbers, variables, or both. Adding, subtraction, multiplying, and division are all reflection coefficient operations.

A mathematical operation such as reduction, addition, multiplication, or division is used to integrate terms into an expression.

As per the given statement in the question,

Product of 9 and 5 i.e., 9 × 5 and,

Difference of 24 and 6 i.e., 24 - 6

Thus sum will be,

(9 × 5) + (24 - 6)

The result of the expression is 63.

To know more about an expression:

https://brainly.com/question/14083225

#SPJ2

Answer:

a. Area = 1,017.36 cm²; Circumference = 113.04 cm

b. Area

c. Circumference

Step-by-step explanation:

Given:

Radius (r) = 18 cm

π = 3.14

a. Area of the mirror = area of circle = πr²

Plug in the values

Area = 3.14*18²

Area = 1,017.36 cm²

Circumference = 2πr

Circumference = 2*3.14*18

Circumference = 113.04 cm

b. The area of the glass would be used in finding the amount of glass needed caused it's the surface of the glass that is to be replaced.

c. The silver wire would be placed around the mirror, therefore, it is the circumference that would be needed in finding the amount of wire needed since the circumference is the perimeter round the mirror.

Answer:

I think A

hope it's help.

Answer:

b = 20 cm.

Step-by-step explanation:

Define and explain:

This is a right triangle, so the Pythagorean Theorem applies.

The Pythagorean Theorem states that the sum of the squared legs will equal the squared length of the hypotenuse.

The legs of a triangle are the sides that form the right angle.

The hypotenuse is the longest side; the hypotenuse is always diagonal from the small square indicating a right angle.

Solve:

[tex]a^2+b^2=c^2[/tex]

[tex]a,b-legs[/tex]

[tex]c-hypotenuse[/tex]

[tex]15^2+b^2=25^2[/tex]

[tex]225+b^2=625[/tex]

[tex]625-225=400[/tex]

[tex]b^2=400[/tex]

[tex]b=20[/tex]

Conclude:

Therefore, the length of the unknown side is 20 centimeters.

Answer:

A - since the median can be any number we know of. B - Again the median can be any number we know of, since it is a undetermined amount. E - The range can be 10 flights, this is because it is not a determiend value, and it is possible for the value to be 10.

Step-by-step explanation:

Wrong answer reasoning:

The mode doesnt need to be 9 if there is more than 1 mode, so that isnt it. Eliminating D. The mean can most definatly be determinded if we know the values. This elimnates C. The mean can be 6.875, but we dont know, so we can assume it IS 6.875. This eliminates F.

Hope this helps!

Answer:

m - 3.2

Step-by-step explanation:

Answer:

84,327.50 cubic meters

Step-by-step explanation:

Volume of a cone 1/3(nr^2h)

n = 3.14

r = radius  

h = height

1/3 x 3.14 x 25^2 x 129 = 84,327.50 cubic meters

Answer:

[tex]-\infty < y < -2[/tex]

Step-by-step explanation:

Given

The attached graph

Required

The range of the graph

From the graph we can see that the curve points down towards the y-axis,

This means that y starts from a [tex]-\infty[/tex] number

Coming up, the curve stops increasing at 2 and becomes horizontal; This means that y ends at 2

Hence, the range is: [tex]-\infty < y < -2[/tex]

Answer:

1/72

Step-by-step explanation:

The probability of landing on heads is 1/2

The probability of rolling a 2 is 1/6

The probability of rolling a 4 is 1/6

[tex]\frac{1}{2} *\frac{1}{6} *\frac{1}{6} =\frac{1*1*1}{2*6*6} =\frac{1}{72}[/tex]

Answer

x=52/5

Step-by-step explanation:

Multiply all terms by the same value to eliminate fraction denominators next

Cancel multiplied terms that are in the denominator after that you

Multiply the numbers

Answer:

search it up

Step-by-step explanation:

Answer:71.929

Step-by-step explanation:

Sin-1(10sin(61)/9.2) = 71.929

Answer:

i thiiiink its b

Step-by-step explanation:

Answer:

Its 95/100

Step-by-step explanation:

7/10 can be changed into 70/100 then just add 25/100 and you get 95/100

Answer:

32/100

Step-by-step explanation:

All we have to do is add the amount of distances he hike!

If you are curious to why we do not add the 10 + 100, the denominator is spose to stay the same in addition!

7/10 + 25/100 = 32/100

~ LadyBrain

Answer:

14.99 + 25.99 - X = 30.98

14.99 + 25.99 - X

Step-by-step explanation:

They all relate to what the question is asking, and make the most sense

Answer:

9 necklaces with 40 extra beads

Answer:

Kyra will be able to make 9 necklaces using 810 beads. She'll have 40 beads left.

Step-by-step explanation:

850/90= 9 r40

Answer:

Percent Decimal Fraction

331/3% 0.333. ..1/3

Answer:

The actual answer is $436,409.87

Step-by-step explanation:

I took the test and this answer showed

hope this helps!

Answer:

A

Step-by-step explanation:

Only graph in which x=2

Answer:

When we have a function f(x), the average rate of change in the interval (a, b) is:

[tex]r = \frac{f(b) - f(a)}{b - a}[/tex]

In this case, we have the function:

f(x) = (x + 3)^2 - 2

(but we do not have the interval, and I couldn't find the complete question online)

So if for example, we have the interval (2, 4)

The average rate of change will be:

[tex]r = \frac{(4 + 3)^2 - 2 - (2 + 3)^2 + 2}{4 - 2} = \frac{24}{2} = 12[/tex]

If instead, we want the rate of change in a differential dx around the value x, we need to differentiate the function (this is way more complex, so I will define some rules first).

Such that the rate of change, in this case, will be:

f'(x) = df/dx

For a function like:

g(x) = x^n + c

g'(x) = n*x^(n - 1)

And for:

h(x) = k( g(x))

h'(x) = k'(g(x))*g'(x)

So here we can write our function as:

f(x) = k(g(x)) = (x + 3)^2 - 2

where:

g(x) = x + 3

k(x) = x^2 - 2

Then:

f'(x) = 2*(x + 3)*1 = 2*x + 6

That is the rate of change as a function of x (but is not an "average" rate of change)

Answer:

y=9/10x-1.5

I think that's the right estimate, sorry if the y-int is wrong :)

Answer:

Equation: -3x + 18

Hope this helps!

Answer:b= necklace c= 3.20

brainliest

Answer:

Get to Know the Parts of a Compass. Baseplate: Clear, so you can see the map below it, it has at least one straight edge for taking bearings and

Adjust Declination. North on a map is easy to find (it’s at the top)

Orient Your Map

Take a Bearing

I hope this helps :3