Least common multiple of 70, 60, and 50

When dividing fractions, Why do we invert (find the reciprocal) and multiply?

There 400 students in sixth grade of these students 180 are boys what percent of sixth graders are girls. A) 30% B) 45% C) 55% D) not here

Long distance company a charges a base rate of $5 per month plus 4 cents per minute that you are on the phone. Long distance company b charges a base rate of only $2 per month but they charge you 10 cents per minute used.

Stephen is using a map to plan a hike. The map is based on a scale of 1:40,000, in cm. If the route is 10 cm on the map, how many kilometers is the actual hike?

Is 1/4 of 200 greater than 1/2 of 100

The price of an article on sale was 70% of the regular price. If the sale price was $28, what was the regular price?

There are 12 players on a new softball team. before the team starts playing games the team must pay a total of $ 572. along with the registration fee, the team will also need to spend a total of $ 1,240 on equipment.

Simplify. 8 (4x-3y-5) - 2 (3x-2) Show how you got the answer

Paula is given a litre bottle of water during her fitness assessment at the gym. She drinks 375 millilitres of the water. How much is left?

Is the transformation an isometric transformation? Explain