Sela had 40 coins 4 months ago because 240 divided by six is 40.
Answer: option A and D results in 3 significant figures.
Step-by-step explanation:
A. 
The number 17.6 has three significant figures.
B. 
The number 119.25 has 5 significant figures
C. 
The number of 19.83 has 4 significant figures.
D. 
The number of 25.5 has 3 significant figures.
Hence, option A and D results in 3 significant figures.
Step-by-step explanation:
1.before starting first collect the like terms.
5(2x+1)=10x
the like terms are 10x and 2x
2. 5+1=10x-2x because the 2x us crosing the equality sign
that is
6=8
Answer: this is wrong there will be 28
Step-by-step explanation:
Answer:
4√10
Step-by-step explanation:
√(8) √(20)
= √(8 x 20)
= √(160)
= √(16 x 10)
= √(16) x √(10)
= 4 x √10
= 4√10