Question

1.The highest elevation in the Asian continent in Mount Everest located in the Himalayas, it is 29,029 feet above the sea level.The earth's lowest elevation on land is Dead Sea, which is 1312 feet below sea.What is the difference between the two elevations?

2.Evaluate the following: a) [(-72)+(-26)]×(-5)
b) 72 of 52×20÷(17+3)-11

3.Prove that both sides are equal: (-34×10) + (-34×20)=-34 (10+20)

4.Write two pairs of integers a and b such that a÷b=-5

5.What will be the sign of the product if we multiply together seven negative integers and three positive integers?

Please answer this question properly♡

Answer 1

1.
let above the sea level be positive
and below the sea level be negative.
so difference is
29029-(-1312)
=>29029+1312
=30341

2.
490(by distributive property)

3.
take -34 common on LHS
so
-34(10+20)
hence proved

4.
-5/1
-10/2
there fore the pairs are
(-5,1) and (-10,2)

5.
Negative as 7 is an odd no.