Answer:
16
Step-by-step explanation:
I started at zero, added 15, we get 15, I then subtracted 21, since 3 times 7 is 21. I get -6. If instead made my base number 6, and then did all this, I would get zero. I would then add 10 to the base number of six, making my base number 16. Doing this process all over again, you indeed find it to be 10. 16 + 15 = 31. 31- 21 = 10.
Answer: D
Step-by-step explanation:
5x + 4x = 180°
Angles on a straight line add to 180°
Answer:
40 mph
Step-by-step explanation:
160÷4 = 40 miles per hour
Answer:
x
=
−
2021
3
y
z
+
X
3
3
y
z
+
y
2
3
z
+
z
2
3
y
Step-by-step explanation: