3 years ago

Solve the equation for a.

Mathematics

2 answers:

Alexandra [31]3 years ago

8 0

Answer:

first one

Step-by-step explanation:

Pavel [41]3 years ago

6 0

Answer:

$\large\boxed{a=\dfrac{K}{4+9b}}$

Step-by-step explanation:

$K=4a+9ab\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\K=a(4+9b)\qquad\text{divide both sides by}\ (4+9b)\neq0\\\\\dfrac{K}{(4+9b)}=\dfrac{a(4+9b)}{(4+9b)}\\\\\dfrac{K}{4+9b}=a$

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