9 x 15 = ( 9 x 9) + (9 x 15)
Not sure about the first one,
The second one is 1/9.
Answer:
8
Step-by-step explanation:
To find the mean, you add up all the numbers and divide it by the total number of numbers. So 4+5+7+8+11+13 is 48. There are 6 numbers. So 48/6=8.
Rules for adding: if the bases are the same you can add them, and subtracting happens in a fraction
Answer:
<u>Yes, it is 30</u>
Step-by-step explanation:
And yes, you thought it through correctly. 6(X-Y) = 6*5
6(X-Y) = <u>30</u>
