Jennifer has 7 red marbles and blues marbles. how many marbles does she have?
2 answers:
For this case we must find the number of marbles that Jennifer has.
Let T be the variable that determines the number of total marbles that Jennifer has.
Let x be the variable that represents the number of red marbles that Jennifer has. So,
Let y, the variable that represents the number of marbles blues Jennifer has. So,
To find the value of T, we must add the variables x and y.
So,
So, Jennifer has 14 marbles.
Answer:
14 marbles
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Answer: Ian's height = x+14 = 69+14 = 83 cm
Explanation :
Let the height of Jim be x
Let the height of Ian be x+4
Let the height of Lisa be x+4+10=x+14
Since their heights increase by 2cm every months
so after 7 months ,
Jim's height = x+14
Ian's height= x+4+14=x+18
Lisa's height= x+14+14=x+28
According to question,
Sum of Ian's and Jim's height = 170cm
⇒x =
⇒ x= 69cm
∴ Ian's height = x+14 = 69+14 = 83 cm