<span>I rounded up the whole number as if each student sells only 3 sweatshirts, it is too little to pay for the whole trip, therefore the number must be 4. Hope that helps!</span>

4 0

3 years ago

At a local gym, a random sample of 75 members

Juli2301 [7.4K]

Answer:

number of gym members who prefer bicycling : 18/75*350 = 84

number of gym members who prefer exercise classes: 22/75*350 ≈ 103

number of gym members who prefer running on the treadmill: 15/75*350 = 70

number of gym members who prefer weight lifting: 20/75*350 ≈ 93

Step-by-step explanation:

GYM SURVEY RESULTS

Type Number of Members

Bicycling 18

Exercise Classes 22

Running on Treadmill 15

Weight Lifting 20

Total 75

5 0

3 years ago

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. What is the le

Tems11 [23]

Answer:

51.72 cm.

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.

First of all, we will find the wavelength using following formula.

$\text{Wave speed}=\text{Frequency}\times \text{Wave length}$