Answer:
See below, there may be more than one answer
Step-by-step explanation:
4(3+1)+2 = 18
(4+2)(3)+1 = 19
(1)(2+3)(4) = 20
(1+2)(3+4) = 21
Answer:
3 hours 8 minutes
Step-by-step explanation:
You take what Mark ran, 46 miles, and you see that Mark ran 31 more miles than Jack, so the equation would be 46-31, which would be 15 miles. So, Jack ran 15 miles.
The answer is D! 4(2a + 3) = 8a + 12
Step-by-step explanation:
8 + g = 15
g = 15 - 8
g = 7
Hope it will help :)