Step-by-step explanation:
(1/12)^-2b x 12^-2b+2=12
12^-(-2b) x 12^-2b+2=12
12^2b+(-2b+12)=12
2b-2b+12=12
=1
Answer: I do not understand the options you gave but but cos30º is equal to 
/2 which is 0.86602540378.
Answer:
11/20
Step-by-step explanation:
To be able to find the fraction of the cake that Jake ate if you know that he ate 55% of it, you have to turn the 55% into a fraction. To do this, first you have to divide the percent by 100:
55/100
Then, you have to simplify the fraction. In this case, you can do it by dividing by 5:
11/20
According to this, the fraction of the cake that Jake ate is 11/20.
Answer:
-2r-19p
Step-by-step explanation:
-4p-2r-15p
add like terms
-2r-19p
Answer:
12 girls
Step-by-step explanation:
16 divided by 4 is 4
Since the ratio is 4:3, that means that for every 4 boys, there are three girls.
3 x 4 is 12
Your answer is 12 girls.
