Answer:
The answer is B. Associative.
Step-by-step explanation:
The reason why its B because the associative property states that even if the numbers are regrouped, the answer will still be the same.
I might be wrong
0-35=-35-(-35)=-70-(-35)=-105-(-15)=-120. so -120 would be your answer. hope this helped.
This kind of problem request the use of harmonic mean:
if t₁ is the Time spent by Jessica, and
t₂, the time spent by Felecia, and t₃ the time spent by both, then the equation of that kind of problem will be:
1/t₁ + 1/t₂ =1/t₃.
t₁ = 1h45 min, t₂ (unknown, to be calculated), t₃ = 1 h, to ease things let' convert the time in minutes
t₁ = 105 min
t₂ = ?(time needed to Felicia to maw the lawn)
t₃ = 60 min
1/105 +1/t₂ = 1/60===> 1/t₂ = 1/60 - 1/105==> 1/t₂ =1/140
& t₂ =140 minutes or t₂ = 2h & 20 min
9 is to 36 as 10 is to 40 -is how you should write the proportion 9:36 = 10:40 using words.
C. 2 : 1, because the original ratio would be 8 : 4, but to get it to the correct ratio you must simplify the ratio to 2 : 1.