Mathematics: There are 765 marbles in a box. there are twice as many blue marbles as green marbles. there are three times as many red marbles as blue. how many blue marbles are there in the box?

There are 765 marbles in a box. there are twice as

Ответ:

dakodahepps

04.01.2022

B=blue
g=green
r=red
2 times as many blue as green
b=2g
3 times as many red as blue
r=3b
subsitute 2g for b
r=3(2g)=6g
r=6g

r+g+b=765
so we subsitute
r=6g
g=g
b=2g

6g+g+2g=765
add like terms
9g=765
divide both sides by 9
g=85
subsitute
b=2b
b=2(85)
b=170

170 blue

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Ответ:

isaiahjohnson2594

06.11.2020

Mathematics

Rx + Py = PR

Step-by-step explanation: I took the test and the 4th option was incorrect. When I retook it I got it correct with option 2.

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There are 765 marbles in a box. there are twice as many blue marbles as green marbles. there are three times as many red marbles as blue. how many blue marbles are there in the box?

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