Just answered this one in the comments on your other question, but to repeat the answer is 6 units because that's the difference between (-1) and (-7).
Answer: $116
Step-by-step explanation:
145/10 = 14.5
14.5 * 8 = 116
18 students are 100%-37,5%-40%=22,5%
So we know that 18 students equal to 22.5. And we are looking for the anwser what 100% of students is.
SO:
x students - 100%
(22 + 1/2)x =18×100
(22 + 1/2) can be represented as just 25.5
-//- = 1800
we need to divide bot sides by 25.5
x = 1800 / 25.5
... x = 80
Answer:
The number of integers that can't be expressed as a difference between the squares of two integers is 250.
Step-by-step explanation: