Hey there!
To start, first let's assign a variable to each person:
A to represent the miles biked by Albert
B to represent the miles biked by Bob
Now, let's set up a system of equations:
A=3B
A + B = 72
Next, use substitution (plug 3B in for A in the second equation since A is equal to 3B):
3B + B = 72
Then, simplify and solve:
3B + B = 72
(combine like terms)
4B = 72
(divide both sides by 4)
B=18
Now that you know the amount that Bob biked, you can plug his miles into the equation for Albert: A=3B
B=18
A=3(18)
A= 54
Your final answer would be that Albert biked 54 miles.
Hope this helps!
Answer:
(y¹-y¹/x¹-x¹)
8-11/10-19
-3/-9
1/3
Step-by-step explanation:
1/3 or one-third is your answer!
A possible answer for #12 could be 12.
as for #13, a possible answer could be 3/4
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i’m sorry if this is incorrect. i truly hope this helps!
Answer: the only answer is d
Step-by-step explanation:
Find slope by calculating rise (change in y) over run (change in x).
1-(-3)/-4-0
4/-4
-1
Final answer: A
