Answer:
B. C
Step-by-step explanation:
thats what I think it is
103^2-102^2
The property that applies here is a^2-b^2 = (a+b)(a-b)
so the answer is 103^2-102^2=(102+103)*(103-102)= numerically it is 205( as 103+102 = 205 and 103-102 = 1.....so 205*1 = 205)
The thing is that usually the factorization ends at (102+103)(102-103) ......
Answer:
5.4 numbers of purple beads and 12.6 numbers of silver beads.
Step-by-step explanation:
Arlene makes a necklace using 14 purple beads for every 6 silver beads. So, she uses purple and silver beads in the ratio 14 : 6 = 7 : 3.
Now, the necklace contains 18 beads, then in the ratio 7 : 3, there will be 
numbers of purple beads and (18 - 5.4) = 12.6 numbers of silver beads. (Answer)
Answer:
2+x
Step-by-step explanation:
Sum= addition
If the number is not provided we always include a variable and the most common one is X never use t, o, i, l, because you might confuse yourself because they look like numbers when they are variables.
Answer:
16y -25
Step-by-step explanation:
7-4[3-(4y-5)] = 7 -4(3 -4y +5) = 7 -4(-4y +8)
= 7 + 16y -32
= 16y -25
