How do you write 4000 in scientific notation

The circumference of a circle is 4 pi find the radius and the area of the circle show your working clearly

How to you write a rule for 2, 10, 5 and 250?

Solve the equation 2^x=512

Is 3.8 a fraction or a mixed number

What's the answer to x+1/2=3/4

Gabrielle's age is three times Mikhail's age. The sum of their ages is 44. What is Mikhail's age?

Find the common ratio for the following sequence 9,6,4

A rectangular courtyard 3.78 metres long and 5.25 metres wide is to be paved exactly with square tiles, all of the same size. What is the largest size of the tile which could be used for the purpose? (A) 14 cm (B) 21 cm (C) 42 cm (D) None of these

650mL = how many ounces?

Which is the more precise measurement? Explain. 6 hours, 14 days 14 days, because an hour is a smaller unit of measure than a day 14 days, because a day is a smaller unit of measure than an hour 6 hours, because a day is a smaller unit of measure