exam Maths Puzzle Numerical Ability

The sum of twho numbers is 89. Adding four times the first number to the second number gives 155. WHich one of the follwoing equaitons expresses this problem algebraically?

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exam Other Question

determine the 8th term of the following geometric sequence?
3,9,27
write your answer as a single integer value, not an expression.

I have a somewhat more complicated problem with linear equations.

The problem relates to a measurement task, which implies that the results are not precise but cluttered with st