Answer:
Common difference (d) = -5
Step-by-step explanation:
formula=>
an = a + (n-1)d
=> -8 = 7 + (4-1)d
=> -15 = 3d
=> 3d = -15
=> d = -15/3
=> d = -5
90-x because a complementary angle is =90 degrees.
Answer:
2;4;3
Step-by-step explanation:
y=2x²+4x+3
Answer:
whats the question
Step-by-step explanation: