Tim wrote a statistical question because he is trying to figure out how many books were read in total. Jenna just wanted to know what the first book on the list was.
Answer is C
The conjugate of the complex number a+bi is a-bi
you just reverse the sign of the imaginary part of the number ; so it is 4-51i
A percentage is a number out of 100. So, 17.5% is really 17.5/100, or 0.175.
To find 17.5% of 1500, you multiply 1500 by 0.175
1500 x 0.175 = 262.5.
The commission is $262.50.
Answer:
-2
Step-by-step explanation:
Answer:
172 g/mol
Step-by-step explanation:
CaSO4 . 2H2O
Atomic mass of
Ca = 40
S = 32
O = 16
H = 1
Molar mass = 40 + 32 + (16×4) + 2{(1×2)+16}
= 72 + 64 + 2(18)
= 136 + 36
= 172 g/mol
