84 times 2 equals 168 in multiplication
Answer:
Step-by-step explanation:
1) √2 + 2√2 = ( 1 + 2 ) √2 = 3*√2 = 3√2
4) √8 + √2 = √2*2*2 + √2 = 2√2 + √2 = ( 2 +1 ) √2 = 3√2
7) 2√5 - √5 = (2 - 1)√5 = 1 √5
10 3√5 - 2√5 = (3 - 2) √5 = 1√5
15(.20)= 3 marbles are blue.
15(1/3)= 5 are green
15(.20)= 3 are yellow
3+5+3=11 marbles
15-11= 4 that means the rest of them are red.
