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3 years ago

HELP ME PLEASE!! ILL MARK U BRANLIEST!

Mathematics

2 answers:

ser-zykov [4K]3 years ago

7 0

Answer:

Part A- B Part B- 50

Step-by-step explanation:

4x=200 if x represented 50 than 4X50 = 200 !

serg [7]3 years ago

5 0

Answer:

(B)

(A)

Step-by-step explanation:

Part 1)

If each scarf is 4 bucks, for every scarf you add $4. Another way of writing that is 4x. If the total money made is 200 bucks, you would write 4x=20.

Part 2)

Syrilla needs to sell (A) 50 scarves in order to earn $200

x=50

4(50)=200

that is true, so it is correct

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Answer:

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Step-by-step explanation:

We have been given that a pipe that is open at both ends has a fundamental frequency of 320 Hz when the speed of sound in air is 331 m/s. We are asked to find the length of the pipe.

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$\text{Wave length}=\frac{331}{320}\text{ m}$

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Length of the pipe would be half of the wave-length.

$\text{Length of pipe}=\frac{1.034375}{2}\text{ m}=0.5171875\text{ m}$

Since the length of pipe is in meters, so we will convert it into cm.

1 m = 100 cm

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