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3 years ago

1. A note has a wavelength of 0.77955 m. If the speed of sound is 343.00 m/s, what pitch is this note?

1 answer:

5 0

The pitch depends on the value of frequency. The frequency can be calculated using this formula:

Frequency = wave speed / wavelength

where wave speed = 343.00 m/s
wavelength = 0.77955 m

Frequency = 343.00 m/s / 0.77955 m
= 434.00 s^-1

Therefore the pitch is low since the frequency is also low.

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Which equation has only 1 solution? A. c+2=c+2 B. c= -c+2 C. c+2=c-2 D. c-c=2 Please explain.

zhannawk [14.2K]

Answer:

B. c= -c+2

Step-by-step explanation:

A. ...................

c+2=c+2
c-c= 2-2
0=0

It has infinitely many solutions as the equation is correct for any value of c.

B. ...................

c= -c+2
c+c= 2
2c = 2
c = 2/2
c= 1

It has one solution only

C. ...................

c+2=c-2
c-c= -2 - 2
0 = -4

It has no solution as this equation is incorrect

D. ...................

c-c=2
0 = 2

It has no solution as this equation is incorrect

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3 years ago

In abc above,what is the length of ad

Nezavi [6.7K]

Answer:

Step-by-step explanation:

First calculate BD using sine ratio in Δ BCD and the exact value

sin60° = $\frac{\sqrt{3} }{2}$ , thus

sin60° = $\frac{opposite}{hypotenuse}$ = $\frac{BD}{BC}$ = $\frac{BD}{12}$ = $\frac{\sqrt{3} }{2}$ ( cross- multiply )

2BD = 12 $\sqrt{3}$ ( divide both sides by 2 )

BD = 6 $\sqrt{3}$

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

Calculate AD using the tangent ratio in Δ ABD and the exact value

tan30° = $\frac{1}{\sqrt{3} }$ , thus

tan30° = $\frac{opposite}{adjacent}$ = $\frac{AD}{BD}$ = $\frac{AD}{6\sqrt{3} }$ = $\frac{1}{\sqrt{3} }$ ( cross- multiply )

$\sqrt{3}$ AD = 6 $\sqrt{3}$ ( divide both sides by $\sqrt{3}$ )

AD = 6 → B

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3 years ago

Which is the graph of g(x) = ⌈x + 3⌉?

77julia77 [94]

ANSWER

$\boxed {D}$

EXPLANATION

The given function is,

$g(x) = ⌈x + 3⌉$

The parent function of this ceiling function is

$g(x) = ⌈x ⌉$

When this function is shifted horizontally 3 units to the left, we obtain the transformed function,

$g(x) = ⌈x + 3⌉$

The correct answer is option D.

See attachment.

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3 years ago

Jason spent $46.42 on dinner at hello tokyo. he also spent $21.05 on gas for the car. if his bank account had $60.00, what is hi

AleksandrR [38]

It would be: $60.00 - ($46.42+$21.05)

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2 years ago

A cell phone company charges a monthly fee of $35 and an addition $0.20 per minute used.

kiruha [24]

Answer:

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The monthly fee of $35 is a base pay, and you don't change anything with it.

The "m" stands for minute, and since it costs $.20 for each minute, multiply the two together to get that part of the equation.

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3 years ago