Add digit by digit, from the right, just like any number, except that if it adds to 2, then put a zero and carry one (instead of carrying when it adds to 10 or more).
Example: < means carry, decimal equivalent for checking
1011+1111
1 0 1 1 (8+2+1=11)
+ 1 1 1 1 (8+4+2+1=15)
---<---<----<----<----
1 1 0 1 0 (16+8+2=26)
Proceeding similarly,
a. 10101111+11011011 = 110001010 (394)
b. 10010111+11111111 = 110010110 (406)
c. 01110101+10101100 = 10010001 (289)
Answer:
14
Step-by-step explanation:
CB/AB = CE/ET
3/7 = 6/ET
ET = 14
Lets first get the common difference = d.
Using,
an = a1 +d(n-1)
a8 = a1+ d(8-1)
60 = a1+7d
a12 = a1 + d(12-1)
48 = a1 + 11d
from these 2 equations we will get a1, d
subtracting them, we get
60-48 = 7d-11d = -4d
12 = -4d
d = -3.
and
60 = a1 + 7d = a1 + 7(-3) = a1 -21
a1 = 60+21 = 81.
now a40 = a1 + d(40-1) = 81 + (-3)39
a40 = -36.
The <em><u>correct answer</u></em> is:
84x¹²
Explanation:
To simplify this expression, we work from left to right:
4x(-3x⁸)(-7x³)
Multiplying the coefficients of the first two, we have 4(-3) = -12. Using the laws of exponents, multiplying powers with the same base means we add the exponents; this gives us x(x⁸) = x¹⁺⁸ = x⁹. This gives us
-12x⁹(-7x³)
Multiplying the coefficients, we have -12(-7) = 84. Using the laws of exponents, for the variable we have x⁹(x³) = x⁹⁺³ = x¹²
This gives us
84x¹²
