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15 machines work at the same rate, 15 machines can complete an order in 8 hours, however 3 of the machines break down after 6 hours. The other machines continue until the order is complete. In total how many hours does EACH machine work? (3 mark question)

When tackling wordy questions such as this the first thing to do is to convert the question into an equation where possible. in this case 15M(Machines) x 8H(Hours)=120MH (Machine Hours). This initial equa...

Answered by Omar A. • Maths tutor

11164 Views

Please explain the pathway of blood in the mammalian heart.

Blood enters the right side of the heart through the vena cava. In Humans this is divided into what we refer to as the superior and inferior vena cava. These terms essentially mean the top and bottom vena...

Answered by Katie C. • Biology tutor

2683 Views

a) Factorise: 2x^2-72, and hence b) find the y-intercept of the line with the equation: y=(2x^2-72)/(4x-24)

a) Take out the common factor, giving: 2(x²-36), idenitfy the difference of two squares and factoise accordingly, giving: 2(x-6)(x+6)
b) you have the facotirse version of the top of the fr...

Answered by Innis S. • Maths tutor

1241 Views

¿Te gustaría trabajar en el extranjero? ¿En qué país? ¿Por qué? (example of oral exam question)

Sí, me gustaría trabajar en el extranjero, probablemente en un país latinoamericano, dado que tengo un gran interés en la cultura allí tras mi visita a Méjico hace unos años. Afortunadamente, es posible q...

Answered by Tejan P. • Spanish tutor

2329 Views

If 3(x+2) = 4, what is x?

Step 1: Get rid of the bracket --- 3 * x and 3*2 which makes the left side 3x + 6 /// Step 2: Isolate x on one side --- move the 6 to the other side of the equals sign, taking it away from the 4, which ma...

Answered by Amanda B. • Maths tutor

2909 Views