Answer: a= b/ b+2
Step 1: factor out variable a.
a(b+2)= b
Step 2: divide both sides by b+2.
a(b+2)/ b+2 = b/b+2
Answer: C. x-2
Step-by-step explanation:
We have the following expression:

Factoring in the numerator:

Factoring again in the numerator with common factor
:

Simplifying:

Hence, the correct option is C. x-2
40 ÷ 2.40= 16.66
the teacher can buy 16 cookies
Answer:
pH = 8
Step-by-step explanation:
Formular is given as;
pH = -log[H+]
A)baking soda:
[H+] = 10^-8
Upon inserting it into the formular;
pH = -log (10^-8)
pH = - ( -8)
pH = 8