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There are 895 litres of petrol in Mr Turners petrol tank, he uses 19.7 litres of petrol a day. Estimate the number of days it will take him to use all the petrol in the tank.

895 is approximately 90019.7 is approximately 20 900/20 = 45 it will take approximately 45 days to use all the oil in the tank
HT
Answered by Henry T. • Maths tutor
3190 Views

Solve the following equation: 7x + 6 = -5x - 42

First, we gather like terms: 7x + 5x = -42 - 6 This gives: 12x = -48Now we can divide both sides by 12 to solve for x: 12x/12 = -48/12This gives: x = -4
KY
Answered by Kyle Y. • Maths tutor
4390 Views

Solve this set of simultaneous equations. 1. 4x+2y=12 2. 2x+3y=10

To solve simultaneous equations we need to make either the y coefficients or the x coefficients equal so that we can cancel them out. For this set of equations we are going to make the x coefficients the sam...
GB
Answered by Georgia B. • Maths tutor
4762 Views

Expand and simplify 3 (y + 4) - 2 (4y + 1)

3 (y + 4) - 2 (4y + 1)= 3y + 12 - 8y - 2= (3y - 8y) + (12 - 2)= 10 - 5y
RJ
Answered by Rachel J. • Maths tutor
4210 Views

Draw the graph y=tanx in the region -180 degrees =< x =< 180 degrees

This answer would be best shown using a diagram. However you must ensure that the graph crosses the x axis at -180, 0 and 180 degrees. Moreover it is also necessary that the student has included asymptotes w...
JJ
Answered by Jack J. • Maths tutor
5307 Views