3x + 15 = 66
<u> -15 -15</u>
3x = 51
Divide 51 by 3 which equals 17.
Answer:
y= ½x+9
Step-by-step explanation:
Use desmos makes it easier
Answer:

Step-by-step explanation:
1221 x 1221 = 1490841
square root of 1490841 is 1221
Answer:
1287
Step-by-step explanation:
The number of combinations of 13 diamonds taken 5 at a time is ...
13C5 = 13·12·11·10·9/(5·4·3·2·1) = 13·11·9 = 1287