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What is an operating system.

An operating system is a system software found within a computer system which ensures that the computer peripherals and softwares installed onto the system are functioning properly. The operating acts as a s...
AA
Answered by Awais A. • Computing tutor
2898 Views

Talil is going to make some concrete mix. He needs to mix cement, sand and gravel (1: 3:5) by weight. Talil wants to make 180 kg of concrete mix. He has 15 kg of cement, 85 kg of sand, 100 kg of gravel. Does he have enough to make the concrete?

In order to answer this question you need to find out how much cement, sand and gravel is needed to make 180kg of concrete mix. To do this you must find out how many parts the concrete mix ratio is made up (...
KM
Answered by Katie M. • Maths tutor
34560 Views

How do you form the perfect tense?

The perfect tense is like a sandwich. The subject pronoun, then a conjugated auxiliary verb which is either haben or sein in agreement with the subject pronoun is the at the beginning of the sentence. The re...
GD
Answered by Georgina D. • German tutor
2112 Views

Simon's car has run out of fuel. He must push his car 5 metres to the petrol pump, using a force of 200N. How much work does Simon do?

This question asks students to recall the equation Work done = Force x Distance. In this question, students must multiply 200 by 5, with the answer being 1000 Joules. It is important that the students rememb...
JW
Answered by James W. • Physics tutor
3257 Views

John has 12 marbles. Sandra has 10 more marbles than Kathy. Kathy has 4 times as many marbles as John. How many marbles does Sandra have?

This question asks how students can formulate linear equations from worded questions. The first step is to give each person an algabraic symbol. j for John, s for Sandra and k for Kathy works fine. Next, stu...
JW
Answered by James W. • Maths tutor
5703 Views