Let's say is "x", so, then "x" is the 100%, and we know that the 60% is 120, what the dickens is "x" anyway?

$\bf \begin{array}{ccll}
marks&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
x&100\\
120&60
\end{array}\implies \cfrac{x}{120}=\cfrac{100}{60}\implies x=\cfrac{120\cdot 100}{60}$

3 0

2 years ago

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svlad2 [7]

Answer:

k = 73

Step-by-step explanation:

The sum of all the angles in a triangle is 180 degrees.

62 ° + k + 45 ° = 180

Solve the equation for k

Add 62 ° and 45 °

k + 107 = 180

Move all terms not containing C to the right side of the equation.

Subtract 107 from both sides of the equation.

k = 180 − 107

Subtract

k = 73

4 0

3 years ago