The area (in sq, units) of the triangle formed by the graphs of 8x + 3y = 24, 2x+8 = y and the x – axis is:
8x + 3y = 24 and 2x + 8 = y and x-axis For base :- difference between x intercept For height :- point of intersection of two line For height = put y = 2x + 8 8x + 3(2x + 8) = 24 8x + 6x + 24 = 24 14x = 0, x = 0 Y = 2 × 0 + 8 = 8 → height Base :- x-intercept put y = 0 = 8x + 3 × 0 = 24 = [x1 = 3] = 2x + 8 = 0, x2 = -4] Difference = 3 – (- 4) = 7 Area of triangle = ½ × 7 × 8 = 28
A person spent 34% of his monthly income on food and 33% of the remaining on rent. If amount spent on rent is Rs 1089, then find the amount spent on food.
If the student scores 25% marks then he is failed by 210 marks. But if he scores 55% marks then he is passed by 240 marks. Find the passing percentage?
If a student scores 30% marks then he is failed by 50 marks, but when he scores 50% marks then he is passed by 30 marks. Find the passing %?
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A gets 36% of the full marks in an exam and fails by 90 marks. B gets 38% of the full marks in the same exam and he also fails by 72 marks. What is the ...
In a two digit positive number, the digit in the unit’s place is equal to the square of the digit in ten’s place, and the difference between...
A student multiplied a number by 8/5 instead of 5/8. What is the percentage error in the calculation?
In a given years, A sold 1800 caps while B sold 45% more number of caps than A and C sold 20% less number of caps than B. Find the ratio between the num...
