exam Maths Puzzle Numerical Ability

Solve each problem. Use your choice of methods.

x + y = -4

4x + y = -13

y + 3z = -10

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exam Other Question

I have $30 in my drawer consisting of dimes and quarters. Write an inequality that shows the different number of coins in my drawer.

.25x + .10y < $30

Is that all that is needed for a question like that? a. The measure of angle CBD is 10 less than twice the measure of angle ABD. If D is in the interior of angle ABC and the measure of angle ABC is 80, what is the measure of angle CBD?