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Answers by Ramesh V.

Number of students creating a dessert = d Number of students creating an appetizer  = d + 7 Number of students creating two dishes = total number of students - total number creating single dish = 50 - (d+d+7) = 50 -(2d+7) According to the problem the above is...

5/3d-3/2=-1/2 (answer)

Moving -3/2 to the other side of the equals sign changes the -ve sign to a +ve 3/2 (5/3)d = -1/2+3/2 (5/3)d = 1 d = 1/(5/3) = 3/5

Wats n-3/8=1/8 (answer)

Add 3/8 on both sides n - 3/8 + 3/8 = 1/8 +3/8 Therefore, n  = 1/8 + 3/8 = (3+1)/8  = 4/8  = 1/2

a) l (brightness) = 19/  (4 * 22) watt per sq. meter The brightness/intensity of the light varies inversely to the distance you are from the source of light, if d is increased to 3 meters for example, the brightness decreases even further.   b) The sum of the intensities of...

Find the homogeneous solution first by writing the characteristic equation: r^4 - 1 = 0 (r^2 + 1) ( r^2-1) = 0 r = 1, -1, i, -i The homogeneous solution is of the form: yh = c1et + c2 e-t + c3 cos(t) + c4 sin (t) Particular solution can be solved in 2 steps...

4y-x=27 2x+7y=21 (answer)

Multiply this equation by 2 : [4y-x=27] x 2 we are multiplying by 2 so that -2x and +2x cancel each other out and we can solve for one of the unknowns y. The trick here is to somehow solve for one unknown first 8y-2x = 54 Now, rearrange and solve for unknowns -2x +8y = 54 2x  ...

what is x+2 =8 (answer)

I think the curly bracket { is a modulus written like | Questions of this type will have two solutions as indicated in the solution choices. Remember that modulus changes negative to positive values. 1st solution: put a negative sign around (x+2) and solve -(x+2)  =...