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Find the value of a, b, c in the following quadratic equation : 2x2 ‒ x ‒ 3 = 0
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Write the quadratic equation whose roots are ‒2 and ‒3.
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For a sequence if n `S_n=n/(n+1)` then find the value of S10.
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Verify whether 1 is the root of the quadratic equation : `x^2+3x-4=0`
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If one root of the quadratic equation kx2 – 7x + 12 = 0 is 3, then find the value of k.
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If α + β = 5 and α3 +β3 = 35, find the quadratic equation whose roots are α and β.
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(x + 5)(x - 2) = 0, find the roots of this quadratic equation
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The following data shows the number of students using different modes of transport:
Modes of Transport | Number of Students |
Bicycle | 140 |
Bus | 100 |
Walk | 70 |
Train | 40 |
Car | 10 |
From this table, find the central angle (θ) for the Mode of Transport ‘Bus’.
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Write the following quadratic equation in a standard form: 3x2 =10x + 7.
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The time taken by a person to cover 150 km was 2 1/2 hours more than the time taken in the return journey. If he returned at a speed of 10 km/hour more than the speed while going, find the speed per hour in each direction.
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Find the values of a, b, c for the quadratic equation 2x2 = x + 3 by comparing with standard form ax2 + bx + c = 0.
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Find the first two terms of the sequence for which Sn is given below: `S_n=n^2(n+1)`
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Find the value of discriminant (Δ) for the quadratic equation: `x^2+7x+6=0`
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How many three digit natural numbers are divisible by 5?
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Three horses A, B and C are in a race, A is twice as likely to win as B and B is twice as likely to win as C. What are their probabilities of winning?
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State whether the given equation is quadratic or not. Give reason.
`5/4m^2 - 7 = 0`
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If S = {2, 4, 6, 8, 10, 12} and A = {4, 8, 12}, find A'
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Solve the following quadratic equation by using formula method :
2x2 - 3x = 2
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What is the probability that an ordinary year has 53 Sundays?
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Write the following equation in the form ax2 + bx + c = 0, then write the values of a, b, c for the equation.
2y = 10 – y2
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