A and E
When you multiply any equation with a decimal you add that many decimal places in the end.
Ex: If you multiply 4.12×5.8 there will be 3 decimal places in the product because 4.12 had 2 decimal places and 5.8 had 1 decimal place and 2+1=3.
The only exception is when you multiply a decimal with a number that ends with a 0 and is not a decimal like 10, 20, 30, 100, 1000, etc. If this is the case then put the decimal where it would have been and then move it right the same number as you have 0s.
Ex: 1000× 5.82 would have been 5.82000*, but becomes 5,820.00*, which really is 5,820*.
*continuous 0s after a decimal is unnecessary and will probably make you lose points on a test, but I was trying to prove a point
Answer:
x=3 y=4
Step-by-step explanation:
8x+9y=60 + 2x-9y=-30
10x=30
x=3
y=4
Mass of electron:9.109 times 10^-31 kg
mass of proton: 1.673 times 10-27
speed of light=3.0 times 10^8
avogadro's number 6.02 times 10^32
planck's constant: 6.63 times 10^-34
just google chem constants sheet
Answer:
5,000,000
Step-by-step explanation:
