27/7 . There are 1200 students at a school,
Kate is helping to organise a party.
She is going to order a pizza.
Kate takes a sample of 60 of the students at the school.
She asks each student to tell her one type of pizza they want.
The table shows information about her results.
Pizza
Number of students
20
ham
15
salami
vegetarian
8.
margherita
17
Work out how much ham pizza Kate should order.
Write down any assumption you make and explain how this could affect your answer ​

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes