Answer:
-17
Step-by-step explanation:
-16r=272
16r=-272
r=-17
Technically, none of the equations.
The equation you're looking for would be:
x²+(x+20)²=150²
<span>To subtract 7 from 13 you use the fact that 13 is one ten plus three units, i.e. 13 = 10 + 3. then you can subtract 7 from 10 which is 3, and then add the 3 other 3 units to get 3 + 3 = 6. In this way, you have subtracted 7 from 13 using the fact that 13 is one ten plus 3 units.</span><span>
</span>
Answer:
Step-by-step explanation:
3.6
Answer:57
Step-by-step explanation: