Question

1. The sum of two rational numbers is -1/2. If one of the numbers is 5/6, find the other.

2. What should be taken away from 3x2 – 4y2 + 5xy + 20 to obtain – x2 – y2 + 6xy + 20?

3. Find the compound interest on Rs. 24000 at 15% per annum for 2 whole 1/3 years.

4 . Selling price of a toy car is Rs 540. If the profit made by shopkeeper is 20%, what is the cost price of this toy?​

Answer 1

Step-by-step explanation:

Let other number is x,

Their sum = -1/52

\begin{gathered}x + \frac{5}{6} = - \frac{1}{52} \\ \\ \\ x = - \frac{1}{52} - \frac{5}{6} \\ \\ x = \frac{ -3 - 130 }{156} \\ \\ \\ x = - \frac{133}{156}\end{gathered}

x+

6

5

=−

52

1

x=−

52

1

−

6

5

x=

156

−3−130

x=−

156

133

x = -133/156

Other number is -133/156

I hope this will help you

Answer 2

Answer:

-133/156

is the answer

hope this will help u