If $E=\frac{MN}{S+N}$ and E =75, M = 120, N = 5000, find S

A boy looks through a window of a building and sees a man fruits on the ground 50 m away from the foot of the building. If the windows is  9m from the ground. Calculate, correct to the nearest degree, the angle of depression of the mango from windows

Illustrated the inequality $-1<3x+5<14$ on a number line

In the diagram$PQ\parallel TS,PR\parallel TU$ reflex angle QPS =245^o, $\angle PST={{115}^{{}^\circ }},\angle STU={{65}^{{}^\circ }}$ and $\angle RPS=x$. Find the value of x

If ${{27}^{x}}={{9}^{y}}$ find the value of $\tfrac{x}{y}$

A shopkeeper allows a discount of 15% on the market price of a mobile phone. If a customer paid GH¢ 170.00 for a mobile phone. What was the marked price of the phone?

The venn diagram show the number of students in a class who like reading(R), dancing (D) and swimming (S). How many students like dancing and swimming?

In a quiz competition, a student answers n question correctly and was given D(n + 50) for each question correctly answered. If he gets D600.00 altogether. How many question did he answer correctly?

John pours 96litres of red oil into rectangular container with length 220cm and the breadth 40cm. calculate, correct to the nearest cm, the height of the oil in the container.

A rectangle garden measures 18.6m by 12.5m. Calculate to three significant figures, the area of the garden