Answer:

Step-by-step explanation:



Answer:
she worked 9 hours at sporting goods store and 6 hours on piano lessons.
Step-by-step explanation:
total hours=15
8.47x + 17(15-x) = 178.23
8.47x + 225 - 17x = 178.23
225 - 178.23 = 17x - 8.47x
76.77 = 8.53x
x = 76.77 / 8.53
x = 9
therefore she worked 9 hours at sporting goods centre and the remaining hours (15-9) giving piano lessons.
Answer:The answer is 1 over 2/3
Step-by-step explanation:
Answer:
Wavelength
Step-by-step explanation:
The picture below is an example of a wavelength which is very similar.
Y=mx+b
mx=b-y
÷x. ÷x
m=b-y/x