25a^2-100? becasue if thats it is simple. its a difernece of squares. you just have to square root it. it becaomes (5a-10) (5a+10) so a=+/-2
Answer: B 21
Step-by-step explanation: There are 14 boys divide that by two you get seven and then you times that by three which equals 21
Answer:
Amy makes more money
Step-by-step explanation:
Allison:
works 15hr
makes $5.25 per hr
(5.25)15 = 78.75
Allison makes 78.75 per week.
Amy:
works 15hr
makes 3.10 per hour
(3.10)15 = 46.50
plus 38 in tips
46.50 + 38 = 84.50
Answer: The length of pipe should be 1.59 m.
Step-by-step explanation:
Since we have given that
Speed of sound = 350 m/sec
and
frequency = 220 Hz
We need to find the length of the open pipe, its actually a wavelength of the sound to get traveled through the pipe.
As we know that
![Speed=wavelength\times frequency\\\\350=wavelength\times 220\\\\\dfrac{350}{220}=wavelength\\\\1.59\ m=wavelength](https://tex.z-dn.net/?f=Speed%3Dwavelength%5Ctimes%20frequency%5C%5C%5C%5C350%3Dwavelength%5Ctimes%20220%5C%5C%5C%5C%5Cdfrac%7B350%7D%7B220%7D%3Dwavelength%5C%5C%5C%5C1.59%5C%20m%3Dwavelength)
Hence, the length of pipe should be 1.59 m.