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3 years ago

Why is a drum round and not square

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

8 0

I think it has something to do with how it sounds

Travka [436]3 years ago

3 0

A drum is round because it that specific shape helps keep the resonance within the instrument. The round walls help with the echoing the vibration. The corners of a square will only dim down the sound of the beat. Also, it's much better for the drum skin. The edges of a square drum would easily rip through the skin whereas a round drum would be able to distribute the force of a drumstick beating on it.

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2 A pharmacist has a 13 % alcohol solution and another 18 % alcohol solution. How much of each must he use to make 50 grams of a

nalin [4]

<h2>Therefore he took 40 gram of $1^{st}$ type solution and 10 gram of $2^{nd}$ type solution.</h2>

Step-by-step explanation:

Given that , A pharmacist 13% alcohol solution another 18% alcohol solution .

Let he took x gram solution of $1^{st}$ type solution

and he took (50-x) gram of $2^{nd}$ type solution.

Total amount of alcohol = $[x\times\frac{13}{100}] +[(50 -x) \times\frac{18}{100} ]$ gram

Total amount of solution = 50 gram

According to problem

⇔ $\frac{ [x\times\frac{13}{100}] +[(50 -x) \times\frac{18}{100} ]}{50}= \frac{14}{100}$

⇔ $\frac{13x +900-18x}{100\times50} =\frac{14}{100}$

⇔- 5x= 700 - 900

⇔5x = 200

⇔x = 40 gram

Therefore he took 40 gram of $1^{st}$ type solution and (50 -40)gram = 10 gram of $2^{nd}$ type solution.

7 0

4 years ago

Read 2 more answers

Expand. (1-4m)(m^2-3m+8) your answer should be a polynomial in standard form.

sergiy2304 [10]

Answer:

13m²−35m+8−4m³

Step-by-step explanation:

Expand (1 − 4m)(m² − 3m + 8) by multiplying each term in the first expression by each term in the second expression.

1m² + 1 (−3m) + 1 ⋅ 8 − 4m ⋅ m² − 4m (−3m) − 4m ⋅ 8

Simplify terms.

13m²−35m+8−4m³

8 0

2 years ago

How does the graph of g(x) = (x − 1)3 + 5 compare to the parent function f(x) = x3?

soldi70 [24.7K]

Answer:

g(x) = (x − 1)3 + 5 graph1

x y

1 5

f(x) = x3 graph 2

x y

−2 −8

− 1−1

0 0

1 1

6 0

4 years ago

there are 800 seats in the varsity theater. during regular preformances, all seats cost $12 each. It costs the owner $275 to pay

r-ruslan [8.4K]

Answer:

The correct answers are the following:

A) P=12n-275

B) 124

C) Decrease by $100

Step-by-step explanation:

A) P=12n-275  - Each person (n) pays $12, then the cost/expense ($275) is subtracted from the income to get the profit.

B) 1,213=12n-275 - Plug in the value for P ($1,213).

1,488=12n - Add $275 to both sides.

124=n - Divide both sides by $12.

n=124  - This the number (n) of people that attended.

C) P=12n-375 - Change the value for expense to $375.

P=12(124)-375 - Plug in the value for n (124).

P=1488-375 - Simplify and find the difference.

P=1,113 - This is your profit.

1,113-1,213=-100  - $100 reduction/decrease of profit (or -$100 to profit)

Hope this helps!

6 0

3 years ago

Which statement is true about the two triangles?

mote1985 [20]

C is the correct answer

4 0

4 years ago