Answer: Mark has 28 marbles while Don has 85 marbles.
Step-by-step explanation:
Let x represent the number of marbles that Mark has.
Let y represent the number of marbles that Don has.
If Don has 1 more than 3 times the number of marbles Mark has, it means that
y = 3x + 1
The total number of marbles is 113. It means that
x + y = 113- - - - - - - - - - - - 1
Substituting y = 3x + 1 into equation 1, it becomes
x + 3x + 1 = 113
4x + 1 = 113
4x = 113 - 1 = 112
x = 112/4
x = 28
y = 3x + 1 = 3 × 28 + 1
y = 85
Answer:
42
Step-by-step explanation:
Since Becky already ran 23 miles, and there is 1 mile per track practice, you add the 19 and 23 to get your answer.
Basic formula for the price elasticity of demand coefficient is on this webside:
http://www.economicsdiscussion.net/price-elasticity-of-demand/price-elasticity-of-demand-with-formula/25223
No, Rays go one way only since a point block te other way. Otherwise it wont be a ray :)
Answer:
Step-by-step explanation:
nine more then a number is eleven
let the number be n
n + 9 = 11 <=== ur equation
n = 11 - 9
n = 2
