7-4=3
12-7=5
19-12=7
28-19=9
The sequence starts from 3 and you keep adding 2...
Hope this helps
Let the no be x
4x+9=2x-1
2x=-10
x=-5
Answer:
13
Step-by-step explanation:
Answer:
I am not sure of the answer but it is between A and C but my final answer is gonna be C.
<h3>
Answer: 35 (choice C)</h3>
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Explanation:
For any triangle, the three interior angles always add to 180.
D+E+F = 180
(7b+1) + (2b+1) + (b+8) = 180
(7b+2b+b) + (1+1+8) = 180
10b+10 = 180
10b = 180-10
10b = 170
b = 170/10
b = 17
Use this value of b to find the three angle measures
- D = 7b+1 = 7*17+1 = 119+1 = 120
- E = 2b+1 = 2*17+1 = 34+1 = 35 degrees
- F = b+8 = 17+8 = 25
As a check,
D+E+F = 120+35+25 = 120+60 = 180
which helps confirm the correct answers.
