giving medal to anybody who can help me with this question
whaat is the question
Two car washers, Lydia and Jackie, are working on your car. Lydia can complete the work in 2 hours, while Jackie can complete the work in 1 hour. How many hours do the car washers take if they work together?
here are the answer choices 1/2 3/2 2/3 4/3
3/2 if they equally work on it
can you show me how you got that answer
they split the job in half so. half of 1 hr is 0.5 hrs. half or 2 hrs is 1 hr so 0.5 hr + 1 hr = 1.5 hrs. 1.5 -----> 3/2
oh ok thank you
plus you can do the average. (1+2 hr) / 2 = 3/2
No problem!
do you think you could help me with one more question please
i will become a fan if you can answer this question
if i can solve it then sure!
What is the axis of symmetry for f(x) = 2x2 − 8x + 8? x = −2 x = −3 x = 3 x = 2
isnt it 2 @drag0night
yeah
yayyy i got it right
finding the axis of symmetry you can use x= -b/2a so... x = -(-8)/2(2) x = 8/4 x = 2
ok thanks again
f(x) = ax^2 + bx +c -----> f(x) = 2x^2 -8x +8 so a=2, b=-8, c=8 and just plug into the formula
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