## Cookie_2046 one year ago evaluate the expression if a=1 and b=4

evaluate the expression if a=1 and b=4 $\frac{ 2(a+6b }{ ab}$ A. 12.5 B.8 C.14 D. 6.5

2. SolomonZelman

First will make sure we know that: $$\large\color{slate}{ \displaystyle \frac{2(a+6b)}{ab} }$$ is same as $$\large\color{slate}{ \displaystyle \frac{2(a+6\cdot b)}{a\cdot b} }$$

3. SolomonZelman

now, when a=1 and b=4 you have: $$\large\color{slate}{ \displaystyle \frac{2(1+6\cdot 4)}{1\cdot 4} }$$

4. SolomonZelman

just simplify this....

ok

6. SolomonZelman

when you are done tell me what you got pliz.

The answer is (A) 12.5 Correct? @SolomonZelman

8. SolomonZelman

yes, 12.5 is correct.

Ok thanks for helping

10. SolomonZelman

anytime