The algebraic expression n<span>/10, where </span>n<span> is the number of boards, represents the number of times he gets 2 free boxes of nails. So 2(</span>n<span>/10), or </span>n/5, is the number of boxes, and 100(n/5), or 20n<span>, is the number of nails. Substituting 90 in for </span>n<span>, Peter will get 1,800 nails.</span>
Answer:
(1)5 - 0.5(5) = 5 - 2.5 =======2.5
Step-by-step explanation:
Set this up as a proportion with seeds on top and plants on bottom. Ours will look like this:
. Cross multiply to get 12x=1092. Divide to get that the number of plants to expect from 156 seeds is 91, choice B from above.
50 sqft = 45 min
495 sqft = x min
495/50 is 9.9. So we know we multiplied 50 by 9.9 to change it to 495.
Do the same on the other side. 45 x 9.9 = 445.5.
It will take him 445.5 minutes, or 7.425 hours
