Answer:
3) B) 90°
4) A) 75°
Step-by-step explanation:
3) interior angles of a triangle =180°
So
40+50+?=180
? =180- 90
? =90
4) same rule
40+65+?=180
? =180 - 105
? = 75
Answer:
5b -5
Step-by-step explanation:
5(b - 1)
we apply distributive property:
5*b -5*1
5b -5
Answer: 114
Step-by-step explanation: Because 48+18 = 66 and 180-66 is 114.
Answer:
15+6x=75
Step-by-step explanation:
15 is the starting fee and it is 6$ per class so it would be 6x+15=75
Compare 100 to 110, and see that to go from 100 to 110 is a 10% increase, but to go from 110 back down to 100 is a 9.09% decrease not a 10% decrease
