Distribute the 2
2x-8=8
Add 8 to both sides
2x=16
divide by two
x=8
Answer:
a=6
Step-by-step explanation:
distribute:
3a-15-6=-15
combine like terms:
3a-21=-15
add 21 to each side:
3a=6
divide by 3:
a=2
D'(p) = -8p + 160
<span>-8p + 160 = 0 </span>
<span>-8p = -160 </span>
<span>p = 20 </span>
<span>~~~ </span>
<span>B) Number of drills sold when p = 20 is </span>
<span>D(20) = [ -4(20)^2 + 160(20) - 270 ] = 1,130 drills </span>
I think this is right, i tried.
Answer:
The number of nickels is 17 and number of dimes is 8.
Step-by-step explanation:
Let the number of nickels be x and number of dimes be y.
Total number of coins is 25.
.... (1)
.... (2)
On solving (1) and (2), we get
Put this value in equation 1.
Therefore the number of nickels is 17 and number of dimes is 8.
Answer:
He'll have 24 chocolates remaining.
Step-by-step explanation:
Lets make an equation to represent the problem where x = the number of days and c = chocolates remaining.
60 - 4x = c
Since he ate four chocolates everyday for 9 days, the x in this equation would be 9.
Multiply 9 by 4 to get 36, Then subtract that from 60 to get 24.
