Answer:
A, the ratio stays the same for every pair.
Step-by-step explanation:
They combine to form 2 lithium nitride formulas.<span />
Split the shape into two shapes
A square
Area = L x H = 20 x 21 = 240 cm2
A right angle triangle
Area of right angle triangle = L x H divided by 2
20 x 21 = 240 divided by 2 = 120 cm2
Add both areas
240 + 120 = 360 cm2
Answer:
(2x−5)(x−6)
Step-by-step explanation:
2x^2-12x-5x+30
2x(x-6)-5(x-6)
(2x-5)(x-6)
To solve this problem you must apply the proccedure shown below:
1. You have the following expression given in the problem above:
<span>7/x^2-3x - 1/x^2-9
</span>
2. When you factor the denominator, you obtain:
<span>7/x(x-3) - 1/(x+3)(x-3)
3. By simplifying the expression, you obtain:
3(2x+7)/x(x+3)(x-3)
</span> 3(2x+7)/x(x^2-9)
The answer is: 3(2x+7)/x(x^2-9)