Step-by-step explanation:
Convert the mixed numbers above to improper fractions. Thus:
In order to simplify the fractions above, the division sign changes to multiplication sign thus turn the right hand side of the fraction inversely such that -2/3 to -3/2. Hence,
Answer:
Step-by-step explanation:
The photo for the question is not given. I have searched and attached it.
From the attached photo, the inequality is
-2x/3 + 9 > 7
By simplifying, subtract 9 from both sides of the inequality. It becomes
-2x/3 + 9 - 9 > 7 - 9
- 2x/3 > - 2
Multiplying both sides of the inequality by - 3/2, the inequality symbol would change due to the negative sign. It becomes
- 2x/3 × 3/2 < - 2 × - 3/2
x < 3
Therefore,
Yuto is correct because he isolated the variable correctly and reversed the inequality symbol.
Answer:
Step-by-step explanation:
Given that a referral code is 2 letters (A-Z, no lowercases) followed by 4 digits (0-9), or it is 2 digits (0-9) followed by four letters (A-Z, no lowercases).
Digits are not allowed to repeat but letters can repeat.
Thus we find that 2 letters can be selected in
Since for numbers repitition is not allowed, 4 digits can be arranged in 9P4 ways
= 9*8*7*6
Total no of ways for I type=
For II type numbers are 2 and letters are 4.
So no of ways =
total referral codes possible =