Answer:
$6
Step-by-step explanation:
$15.50 is $3.50 more than $12. And $12 is twice $6. The cost of the screwdriver is $6.
4+3(x+2)=-8
4+3x+6=-8
10+3x=-8
-10 -10
3x= -18
X= -6
Answer:
Step-by-step explanation:
Answer:
aₙ = 30 - 5n
Step-by-step explanation:
25,20,15,10, ...
<u>We see from the given series that it is AP with:</u>
- First term = 25
- Common difference = -5 and it is decreasing series
<u>Then formula is:</u>
- aₙ= a₁ + (n-1)d
- aₙ= 25 + (n-1)(-5)
- aₙ= 25 - 5n + 5
- aₙ = 30 - 5n
Answer:
68
Step-by-step explanation:
4 + (11 - 3)^2
= 4 + 8^2
= 4 + 64
= 68