Questions in Grade High-school

Questions in Grade High-school

[Done] I need help there pictures 17.

[Done] Calculate the price of a $1200 TV after applying a 10% discount.

[Done] Workers load a 500 kg safe onto an elevator that lifts it 90 m to the twentieth floor of a building. How much work did the elevator do on the safe?

[Done] Writing to Explain Use rounding to estimate the product of 12 × 9. Then, use compensation to find the total cost for 12 books that were $9 each. Would this method give a good estimate? Explain.

[Done] What is the product of 49 and 45?

[Done] True or False: A gas that produces a pop with a burning splint is carbon dioxide.

[Done] True or False A gas that ignites a glowing splint is oxygen.

[Done] Tim spends about \(\frac{1}{3}\) of each weekday sleeping and about \(\frac{7}{24}\) of each weekday in school. What fraction of the weekday does Tim spend either sleeping or in school? Is this more or less than \(\frac{1}{2}\) a day? How much more or less?

[Done] 2. Newton began his academic career in 1667. For how long was he a working scientist? Was he a very productive scientist? Justify your answer.

[Done] You have a rectangular yard that measures 16 feet long by 14 feet wide. It is covered in grass except for the center, where there is a circular fountain with a diameter of 4 feet. What is the area of the grass portion of your yard? Round your answer to the nearest hundredth.