Advertisements
Advertisements
Question
2 less than −7 is
Options
-9
-5
5
none of these
Advertisements
Solution
-9
2 less than −7 means the following:
= −7 − 2
= −9
APPEARS IN
RELATED QUESTIONS
Write the number in the following example using the proper signs.
A submarine is at a depth of 512 metres below sea level.
Add: 8 + 6
Add: -73 and -687
Write the successor of the following: −5
From the sum of 33 and −47, subtract −84.
Use convenient groupings and find the value of: (−8) × (−63) × 9
Simplify: (–36) × (72) + (–36) × 28
(−6) + 4 − (−3) = ?
An atom consists of charged particles called electrons and protons. Each proton has a charge of +1 and each electron has a charge of –1. Remember number of electrons is equal to number of protons, while answering these questions:
- What is the charge on an atom?
- What will be the charge on an atom if it loses an electron?
- What will be the charge on an atom if it gains an electron?
Remembering that 1AD came immediately after 1BC, while solving these problems take 1BC as –1 and 1AD as +1.
Greek mathematician Archimedes lived between 287 BC and 212 BC and Aristotle lived between 380 BC and 322 BC. Who lived during an earlier period?
