John can create an app in 6 weeks while Ben can do the same job in 12 weeks. How many weeks would it take them to create an app together?

Why does math exist at all

Jos has read 140 pages of his 300 page book what percent of the book has he read?

A train traveled 240 km in 2.5 hours and then slowed down traveling the final 180 km in 2 hours. What was the train's average speed in km/h? A. 96 km/h B. 90 km/h C. 84.7 km/h D. 93.3 km/h

Which word does not belong with the others?

An object moving along a curve is at position P (2cost, sint) where t denotes time in seconds. Find the speed of the object at position P. Is this object travelling at a constant speed? If not, compare the speed of the object at t=1 and t=3.

Round 1.51 to the nearest one

Whch is bigger 3 km or 5000 m

Can you guess this mystery author? Clue#1 He was born in England Clue#2 He was in the British Army during World War 1.

A fishing boat was out to sea for 6 months and traveled a total of 8578 milesin the first month the boat traveled 659 miles how many miles did the fishing boat travel during the remaining 5 momths

What is 3/4 + (-7/4) ?