Given :The given expression is $\frac{5}{2x} = -5$.To do :We have to find the value of x. Solution :$\frac{5}{2x} = -5$$5 = (-5) \times (2x)$$5 = -10x$$x = \frac{5}{-10}$$x = \frac{1}{-2}$$x= \frac{-1}{2}$ The value of x is $\frac{-1}{2}$.

Given :The given expression is $2\times 149+45÷89-23$.To do :We have to evaluate the given expression.Solution :We use BODMAS method in this type of problems. $2\times 149+45÷89-23= 2\times 149+ \frac{45}{89} -23$                                      $= 298 - ... Read More

Soil gets affected by the continuous plantation of crops in a field because it lacks necessary minerals and nutrients like nitrogen, phosphorus, potassium, etc.and the crop yield decreases automatically.

The Milky Way is a large spiral shape galaxy that contains over 200 billion stars (including our Sun), and interstellar material, which is holding together by gravity.We can also say that our home galaxy is Milky Way.                                                    

Given :The given number is 130 crores.To do :We have to find 1 percent of 130 crores.Solution :1 Percent of 130 crores.130 crores $= 130 \times 10000000$1 % of 130 crores $= \frac{1}{100} \times 130 \times 10000000$                               $= 130 \times 100000$                              $= 13 \times 1000000$                               $= 13000000$Therefore, 1 % of 130 crores is 13000000.1071                                                     

Copper metal is used to make electric wiring. The properties of copper such as ductile, conduction, and thermal resistance are suitable for electricity to travel. Moreover, it is inexpensive. Therefore, copper is used to make electric wiring.  

There are two principal classifications of aluminium alloy, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminium is used for wrought products, for example, rolled plate, foils and extrusions. Cast aluminium alloys yield cost-effective products due to ... Read More

Given :The given expression is $\frac{3}{x}  = \frac{-5}{-8}$.To do :We have to find the value of x.Solution :$\frac{3}{x}  = \frac{-5}{-8}$We know that, $\frac{-a}{-b}=\frac{a}{b}$So, $\frac{3}{x}  = \frac{5}{8}$$x = \frac{3 \times 8}{5}$$x = \frac{24}{5}=4.8$Therefore, the value of x is 4.8. Read More

Given :The given expression is $(-3) \times(-6) \times(-2) \times(-1)$.To do :We have to simplify the given expression.Solution :We know that, $(-) \times (-) = (+)$ $(-3) \times(-6) \times(-2) \times(-1) = [(-3) \times (-6)] \times  [(-2) \times  (-1)]$                                ... Read More

Given :The given statement is 'the greatest five-digit number which is a perfect square'.To do :We have to find such a number.Solution :The greatest 5 digit number is 99999.To find the largest 5 digit number which is a perfect square, first, we have to find out the smallest number which ... Read More