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Find the minimum value of the quadratic 3x^2-8x+1.

This is a question about completing the square. The first step involves taking the factor of 3 our of the expression to reach the correct form for completing the square to reach 3(x^2-(8/3)x)+1. Then, consid...
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Answered by Jamie M. • Maths tutor
3885 Views

Describe the process of genetic engineering and give an example of something this can be used to produce.

Genetic engineering is a biotechnology technique where DNA from one organism is transferred to another organism. The reason we use this technique is so the organism that receives DNA becomes genetically modi...
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Answered by Michael C. • Biology tutor
5658 Views

Escribe una carta a tu amigo/a sobre sus vacaciones el verano pasado.

¡Hola¡ ¿Cómo estás?¿Fuiste de vacaciones este año?Ahora, estoy en España con mi hermana, a veces vamos a ver a su hermano aquí porque se ven todos los meses. No obstante, esta vez no vamos a ir allí porque m...
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Answered by Ella R. • Spanish tutor
9732 Views

How do I improve my portfolio and sketchbook to achieve and A/A* grade?

Although good quality artwork within your sketchbooks are important, examiners also look for development of ideas, honest explanations of processes of thought and critique of your own work to show you can de...
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Answered by Lauren R. • Art tutor
2403 Views

There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark or the boys.

Total mark for whole class is 30 60= 1800Total mark for girls is 20 54= 1080 Therefore subtract smaller from larger to get total mark for boys, and divide that number by 10 to yield 72.
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Answered by Raphael M. • Maths tutor
3894 Views