Answer:
72.
Step-by-step explanation:
Number of strings with exactly 2 1's
= 9C2
= 9*8/2*1
= 36.
Same for 2 0s
= 36.
Answer:
The answer is B.
Step-by-step explanation:
Notice that half of the coefficient of x is (1/2)(-4), or -2.
Then x^2 - 4x becomes
x^2 - 4x + 4 - 4 = 0, or (x -2)^2 = 4. Then x = -2 plus or minus 2, and the two roots are 0 and -4.
Thus, add 4 to both sides to obtain x^2 - 4x + 4 = 4.
Answer:
-1.07
Step-by-step explanation:
–0.4(3x – 2) + 2x+4/3
–0.4(24 – 2) + 8+4/3
–0.4(24 – 2) + 8+4/3
-9.6-0.8+8+1.33
-2.4+1.33
-1.07
