Answer:8
Step-by-step explanation:
Step-by-step explanation:
1. 64=1+3+5+7+9+11+13+15 that is a total of 8 odd numbers so n=8
2.((new-old)/old)×100%=percentual difference
so ((new-$55)/$55)×100%=20%
new-$55=$55×0.2
new=$55+$55×0.2=$66
Answer:
7) 178,978- 70,000
7) 827,717- 700
7) 257,708- 7,000
7) 426,672- 70
8) B- 121,211
Step-by-step explanation:
7) 178,978- the underlined number is 7 which the ten-thousand place. The underlined 7 is 70,000.
7) 827,717- The underlined 7 is is in the hundreds place which is 700.
7) 426,672- The underlined 7 is in the thousand place which is 7,000.
7) 426,672- The underlined 7 is in tens place which is 70.
8) The answer is B because when you correctly put the numbers in order it equals 121,211. For example, "One hundred twenty-one thousand" is 121,000. The next part says "two hundred eleven" which is 211. When you combine both parts together it equals 121,211.
-3 = x^2 + 4x + 1
0 = x^2 + 4x + 1 + 3
0 = x^2 + 4x + 4
Discriminant is b^2 - 4ac.
4^2 - 4(1)(4)
16 - 4(4)
16 - 16 = 0
Discriminant Rules:
1. If b²-4ac is negative, there are no real answers.
2. If b²-4ac is zero, there is one real answer.
3. If b²-4ac is positive, there are two real answers.
Based on rule 2, the answer is ONE REAL ROOT.
Step-by-step explanation:
120 or 16 I think sorry if I got it wrong
