Answer:
Choose c if only one answer
If you can choose 2, then choose a and c
Step-by-step explanation:
sqrt (-80)
±sqrt(-1) * sqrt(80)
sqrt(-1) = i
±i sqrt(80)
±i sqrt(16) *sqrt(5)
± 4i sqrt(5)
The principal square root is 4i sqrt(5), but -4i sqrt(5) is also true
Answer:
A and C
Step-by-step explanation:
It is... B is just a reflected version. A and C are different sizes.
Answer:
126
Step-by-step explanation:
The number of numbers divisible by 9 is ...
j = floor(500/9) = 55
The number of numbers divisible by 7 is ...
k = floor(500/7) = 71
Then the total (j+k) is ...
j +k = 55 +71 = 126
12/84 = 1/7 ≈ 0.14
The discount rate was 14%
Your question is not clearly stated. Do you mean the difference between 10 * 10 * x, and 7 * 7 * 7 *x ? Then the number is x = 119/243. That's about 0.48971... in decimal form.
It's confusing when you say the "difference of a number". Differences are BETWEEN two numbers. See what I mean?
