Sampan

Form the pair of linear equations in the following problems, and find their solutions graphically.&n...

Nina scored 70 out of 80 in a test, find her score as a percentage.

Calculate: $−5 \times 5 − (−8) \times 2$

Calculate: $2 + 3(2 − 20 ÷ 2^2)^2 − (5^2 + 3) ÷ 2$

Water needs to be removed from an underground chamber before work can commence. When the water was a...