It doesn’t tell me what to put
Answer:
-7
Step-by-step explanation:
To find the common difference, take the second term and subtract the first term
-2 - 5 = -7
Check by subtracting the second term from the third term
-9 - (-2) = -9+2 = -7
The common difference is -7
Answer:
Step-by-step explanation:
4:3 total is 7
8:6 total is 14
12:9 total is 21
So there are 9 girls.
Answer:
3x + 3 = -2x + 3
3x + 2x = 3 - 3
5x = 0
x =0.
So y = 3(0) + 3 = 3.
Step-by-step explanation:
Answer:
45°
Step-by-step explanation:
Angles in a triangle add to 180 degrees, so
- 2x - 12 + 2x + 17 + 9x - 7 = 180
- 13x - 2 = 180
- 13x = 182
- x = 14
So, the measure of angle X is 2(14)+17=45°