Multiply the coefficient of the first term by the constant 1 • -31 = -31
Find two factors of -31 whose sum equals the coefficient of the middle term, which is -2 .
-31 + 1 = -30
-1 + 31 = 30
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored
Answer:
We conclude that 520 tickets will be sold in the first 5 hours of the tickets go on sale.
Hence, option A is true.
Step-by-step explanation:
Given that the tickets to a concert went on sale at 10 a.m. by 12 p.m.
- 10 a.m. by 12 p.m means the total number of hours = 2 hours
Given that the tickets sold in 2 hours = 208
Thus,
Unit rate = 208 tickets / 2 hours
= 104 tickets per hour
Therefore,
Tickets sold in the first 5 hours of the tickets go on sale:
104 × 5 = 520 tickets
Therefore, we conclude that 520 tickets will be sold in the first 5 hours of the tickets go on sale.
Hence, option A is true.
B. Hundredths
It goes tenths, hundredths, thousandths
Answer:
20
Explanation:
To know how many students will be in the country spelling bee, we need to find 5% of 400.
So, we need to multiply 400 by 5 and then divide by 100:
Therefore, there will be 20 students in the country spelling bee.
