Answer:
scale factor = 
Step-by-step explanation:
the scale factor is the ratio of corresponding sides, image to original, so
scale factor =
= 
<span>N/-1.5=-1.2
</span>
<span>-1.5*N/-1.5=-1.2*-1.5
n = 1.8
</span>
Now the first mechanic takes 4 days to do the job, so after he has worked for 1 day only, he has done 1/4 of the whole thing.
the second mechanic can do it in 6 days, so after 1 day only of work, he has done 1/6 of the whole thing.
the third mechanic can do it in 8 days, so after a day, he has done 1/8 of the total work.
now, if they all three work together, after 1 hour has gone by, the first mechanic has done 1/4 of the whole thing, the second mechanic has done 1/6 of it, and the last one, has done 1/8.
let's say it took all three working together "t" days, that means after 1 hour of work, they all combined have done 1/t of the whole thing, thus
Answer:
y=2x+7
Step-by-step explanation:
Answer:
sin22°
Step-by-step explanation:
Using the cofunction identity
cos x = sin (90 - x), then
cos68° = sin(90 - 68)° = sin22°