Express 20 cm to 400 mm in simplest form

2x^4=-128x I did the problem but im getting the wrong answer.

Determine the value: 0.0035 : 5 0.0007 0.007 0.07 0.7

The price of a sandwich is $1.50 more than the price of a smoothie, which is d dollars. what does the expression d 1.5 represent?

Dilan and Marissa are parasailing while on vacation. Marissa is 135 ft above the ocean, while Dilan is about 85 ft above the ocean. How much farther can Marissa see than Dilan? a. about 3.4 miles c. about 2.9 miles b. about 1 mile d. about 2.3 miles

Molly bought a new surf boardShe paid a $60 deposit in June and then paid $25 per month after that for the rest of the yearHow much was her surfboard?

Fish give off the compound and ammonia, which has a pH above 7.2. Which class pof commands does ammonia belong?

Colin was thinking of a number. Colin adds 18 to it, then doubles it and gets an answer of 65.5. What was the original number?

How do I change this to a fraction - 6.3

If a^2 + b^2=c^2 then the triangle is a right triangle. A triangle with side lengths of 12 in, 24 in and 16 inches is a right triangle. True or False

You buy a package of cheese for $2.50, a loaf of bread for $2.15, a cucumber for $.65, and some tomatoes for $3.50. Find the total cost of the groceries.