Out of 840 discs tested, 38 are defective. Estimate the number of defective discs in a batch of 43,000.

about 3,890 discs

about 195 discs

about 1,945 discs

about 19,450 discs

How to solve x-2=3 (x-4)

The formulae for kinetic energy is E = -mv2. Find the value of E when m = 900 and v=1.3,

Tom had 69 cards and Jack had 24 cards, tom gave some cards to jack but still have 7 cards more than jack. How many card tom gave to jack and how many cards both have in their hand

If 9.54% of the battery life of each mobile phone is used in a day by a typical user, which mobile phone would use a total of 1.908 hours of battery life in a day?

Ms. Tao flies roundtrip twice yearly between Jacksonville and Los Angeles on business. The distance between the two cities is 2150 miles. Estimate the distance she flies for both trips. Than find the exact distance.

9 x 1/4 = 2 1/4 what is the improper fraction

The sum of two numbers is 44. Their difference is 22.

What is the percentage of 0.5

981,657 rounded to nearest ten thousand

A nutrition label states that there are 36 grams of carbohydrates in each serving. this account for 12% of daily value. how many grams of carbohydrates are recommended per day?