exam Maths Puzzle Numerical Ability

please help me solve this problem 5x2-19x=4 thank you

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exam Other Question

find the equation of the line that passes through the intersection of the given pair of lines and satisfies the other given condition. graph.

3x+4y-2=0, 3x-4y+1=0; the intercepts are equal
Can someone please help me solve this word problem. I am not able to come up with an inequality.

You have at least $30.00 in change that are dimes and quarters. Write an inequality that shows the different numbers of coins.

Thank you.