Omar has $84 and calina has $12. how much money must omar give to calina so that calina will have three times as much as omar?
a. solve the problem above by setting up an equation.
b. in your opinion, is this problem easier to solve using an equation or using a tape diagram? why?

a)$60

Step-by-step explanation:

Omar has $84 and Calina has $12.

According to question

let omar gave  $ x sum money to calina

A) 3(84-x) = 12+x

252-3x= 12+x

252-12= 4x

240x=4x

⇒ x= $60

b)in my opinion this problem is easier to solve using an equation than by the tape diagram because of very easy calculation and can avoid the tedious work of drawing tape diagram.

both equations and proportions are better.

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer