Factorise fully x^2+2x

Evaluate the expression 1/7 dividend by 2/5 subtract by 1/7

A boat traveled 27 miles in 2 hours. At this, how many miles will the boat travel in 1/2 hour?

Bentley wants to determine the height of a tree. He is 5 feet tall, and his shadow is & feet long At the same time, the tree's shadow is 15 feet long. To the nearest tenth of a foot, what is the height of the tree? A. 3 ft B. 103 ft C. 7.5 ft D. 17.

I'm 12 slices of watermelon you can find 144 watermelon seeds. At this rate, how many watermelon seeds would you find in 4 slices of watermelon?

The price of the house is originally listed at 115,000. The owners are having a hard time selling it and decide to reduce the price to 103,500. What is the percentage decrease of the price of the house?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.