Answer:
N+F=42 & F+3N=70 System Solved: Natalie is 14 and Fred is 28
Step-by-step explanation:
Using variables N=natalies age and F=Freds age
N+F=42 ----> N=42-F (take this and plug it into the other equation)
F+3N=70 so F+3(42-F)=70 [simplify] F+126-3F=70 [further simplify]
-2F=-56 [divide -56 by -2] F=28 [then plug this number into the orig. equation]
So N+28=42 or N=14.
Answer:
D-70
Step-by-step explanation:
It is a combination C(8,4)
Answer:
No, because using the distributive property, you would get 5b+15 and 3b+15. The number of b you have is different.
Answer:
2by5=,78
Step-by-step explanation:
if you 9thru7. into8 you get 2by 7
