I think its 8, if you count up all the ducks it's 7. But it's talking like it's counting the ducks in front,middle and behind a duck so 7+1=8.
2a + 3
If a = 10, we can substitute a for the 10.
2 x 10 + 3
Remember, PEMDAS.
20 + 3
Add.
23
Answer:
Tiff, hon, just measure a window, your wasting your time
Step-by-step explanation:
Enough force to push 135 pounds
Answer:
The simplest form is 1/r^7 + 1/s^12
Step-by-step explanation:
The given expression is r^-7+s^-12.
Notice that the exponents of both the base are negative
So, we will apply the rule which is:
a^-b = 1/a^b
Which means that to change the exponent into positive we will write it as a fraction:
r^-7+s^-12.
= 1/r^7 + 1/s^12..
Therefore the simplest form is 1/r^7 + 1/s^12....
