Answer:
The answer is below
Step-by-step explanation:
Let us assume that the age of Greg's brother (Gabe) is x years, and let Greg's age by y years. Since Greg is 10 years older than his brother gabe, then:
y = x + 10 (1)
Also. Greg is 3 times as old as Gabe, hence:
y = 3x (2)
From equation 1 and equation 2:
y = x + 10 = 3x
Hence:
3x = x + 10
Subtracting x from both sides gives:
3x - x = x + 10 - x
2x = 10
Dividing by 2:
2x/2 = 10/2
x = 5 years
y = x + 10 = 5 + 10 = 15 years
Therefore Gabe is 5 years old and Greg is 15 years old
Answer:
Step-by-step explanation:
|3x+12|
one is as it is one is the negative value of it
3x + 12 - (3x + 12)
- 3x - 12
That is because both negative and positive values put in am absolute value become positive.
Answer:
$3.05
Step-by-step explanation:
Backpack=$18.70
6 note books=x
Sales tax=6%
Total cost=$39.22
18.70+x+0.06(18.70+x)=39.22
18.70+x+1.122+0.06x=39.22
19.822+1.06x=39.22
1.06x=39.22-19.822
1.06x=19.398
x=19.398/1.06
=18.3
x=$18.3
6 books=$18.3
Each book cost=18.3/6
=$3.05
Answer:
Kim earned $20.30 and Amy earned $40.60
Step-by-step explanation:
Im just built different
we are given
Firstly , we will multiply both sides by 5
now, we can simplify it
now, we can solve for n
.............Answer
