Answer:
1st = 4×10 ^-9
2nd= 4×10^1
3rd = 4×10^7
4th = 4×10^-5
Step-by-step explanation:
for whole numbers you just have to count from the ending till the number indicated beside the x10
for decimals you count from the front starting at the decimal till you cover the whole number
Answer:
28 units³
Step-by-step explanation:
The volume (V) of the prism is calculated as
V = Al ( A is the area of end face and l is the length )
Here A = 
and l = 
, thus
V = × ( cancel 21 and 3 by 3 and 2 and 8 by 2 )
= 
× 
= 7 × 4 = 28 units³
Answer:
the answer is A.
Step-by-step explanation:
The answer to the question is b
The answer for this problem is D
