Explanation

If x = -3, then

x^2 + 3x + 3

= (-3)^2 + 3*(-3) + 3

= 9 - 9 + 3

= 3

Last verified on 12-10-2026

Explanation

Total distance to cover = Train length + Platform length

= 150 + 250 = 400 m

Speed = 60 km/hr = 60 × 5/18 = 50/3 m/sec

Time = Distance / Speed

= 400 / (50/3)

= 400 × 3 / 50

= 24 seconds

Last verified on 12-10-2026

Explanation

Total parts = 5 + 9 = 14 parts

14 parts = 5,600 tons

1 part = 5,600 / 14 = 400 tons

Larger ship = 9 parts = 9 × 400 = 3,600 tons

Last verified on 12-10-2026

Explanation

Let first = A, second = B

2/5 of A = 1/3 of B

A × 2/5 = B × 1/3

A/B = (1/3) / (2/5)

A/B = 1/3 × 5/2 = 5/6

So ratio A : B = 5 : 6

Last verified on 12-10-2026

Explanation

(1/3 + 2/3) / 2 = (1) / 2 = 1/2

Last verified on 12-10-2026

Explanation

The negative numbers and positive numbers balance each other.

-10 - 40 = -50

20 + 30 = 50

-50 and +50 makes 0, so average is 0.

Last verified on 12-10-2026

Explanation

2/5 of Total = 1,400

Total = 1,400 x 5/2

Total = 700 x 5 = 3,500

Last verified on 12-10-2026

Explanation

11/12 is closest to 1

4/5 = 0.80 (0.20 away from 1)

5/6 = 0.833 (0.166 away)

7/8 = 0.875 (0.125 away)

11/12 = 0.916 (only 0.083 away) - closest

Last verified on 12-10-2026

Explanation

Formula: Perimeter = 2 x (Length + Width)

= 2 x (10 + 5)

= 2 x 15 = 30 cm

Last verified on 12-10-2026

Explanation

2 1/6 = 13/6

1 2/3 = 5/3 = 10/6

13/6 - 10/6 = 3/6 = 1/2

Last verified on 12-10-2026