Algebra Flashcards
1
Q
estiamte (4.8*10^9)^1/2
A
Awesome the key to this problem is to borrow from the 10 to get 48, round to 49 because it says estimate and 10^8
Now what you can do here is you know that 49 squared is 7 and 10 to the 8 swuared is 4 so you get 70K
2
Q
Seamus has 3 times as many marbles as Ronit, and Taj has 7 times as many marbles as Ronit. If Seamus has s marbles, then, in terms of s, how many marbles do Seamus, Ronit, and Taj have together?
(A) 3s/7
(B) 7s/3
(C) 11s/3
(D) 7s
(E) 11s
What is the best way to approach this problem
A
Pick Smart Numbers
