Answer:C
Step-by-step explanation:
I would say D or C but d is the identity property. And C is the distributive property.
For further explanation go to -
https://www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-ditributive-property/a/distributive-property-explained
They are 1st one is vertical angles, second one is complementary
The answer you are looking for is 0.696, rounded to 0.7
Just do 9 divided by 15, and it equals 0.6.
Or an equivalent fraction would be 18/30, and that is found by multiplying the numerator and denominator by an equal factor of 2.