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Dimas [21]
3 years ago
12

Geometry please help

Mathematics
1 answer:
ella [17]3 years ago
5 0

Answer:

1. A sound wave in air has a frequency of 262 Hz and travels at a speed of 330 m/s.

2. Sound has a speed of 340 m/s in air at room temperature.

3. A wave has a frequency of 500 Hz and a wavelength of

4. The speed of light is 3.0x10^8 m/s, calculate for the frequency.

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Setler79 [48]

Answer:

diameter = 3,600 units

Step-by-step explanation:

Let \pi = 3.14

C = 2\pir

11,304 = 2(3.14)r

r = 1,800

d = 2r = 2(1,800) = 3,600

7 0
3 years ago
Plz help me I’ll give branliest!!
padilas [110]

Answer:

I is the 3rd answer

Step-by-step explanation:

5 0
4 years ago
Which is what is 31 square root to the nearest tenth
stich3 [128]
Hi there!

\sqrt{31}  = 5.567...
Therefore the answer is about 5.6
7 0
3 years ago
What is the first term in a geometric sequence if the common ratio is −3 and the sum of the first six terms is 1,274?Hint: cap s
Ber [7]

Answer is   -7

=============================================

Work Shown:

s_n = a_1*(1-r^n)/(1-r)

s_6 = a_1*(1-r^6)/(1-r)

s_6 = x*(1-(-3)^6)/(1-(-3))

s_6 = x*(1-729)/(1+3)

s_6 = x*(-728)/4

s_6 = x*(-182)

s_6 = -182x

-182x = s_6

-182x = 1274

x = 1274/(-182)

x = -7 is the first term of the geometric sequence

------------

Extra info:

The first six terms of this geometric sequence is

-7, 21, -63, 189, -567, 1701

those six terms add to

-7+21+(-63)+189+(-567)+1701 = 1274

which verifies we have the right answer.

3 0
4 years ago
Melanie’s bank account balance is $97 − . She needs to pay $55 to her cell phone carrier and $80 to the landscaper. She also exp
torisob [31]

Answer:

a 97- (55+80) +250

b Melanie has $212 left in her bank account.

Step-by-step explanation:

55 + 80 = 135

97 - 135 = -38

-38 +250 = 212

4 0
3 years ago
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