Answer:
2(8-d)
Step-by-step explanation:
Because it says 2 times the difference this means the difference will be multiplied by 2. It also says difference which means that 8 and d must be subtracting
Let j = cost of one jumbo popcorn, and c = cost of one chocolate chip cookie.
Then, based upon the given info, 1j + 2c = $5.
Also, 3j + 5c = $14.50
Let's solve this system of equations using addition/subtraction:
Mult. the first equation by -3, to obtain -3j - 6c = -$15
Now add this result to the 2nd equation:
-3j - 6c = -$15
3j + 5c = $14.50
----------------------
-c = -$0.50, or c = $0.50. Since 3j + 5c = $14.50, subst. $0.50 for c
lets us find j:
3j + 5($0.50) = $14.50, so 3j = $12.00. Thus, j = $4.00.
Jumbo popcorn is $4/bag, and choc. chip cookies $0.50 each.
Answer:
In the first equation, it's H20 but the second is B
2Mg + 2O2
Answer:
Step-by-step explanation:
area of ramp = 24 x 36= 864
area of side (square)= 24 x 24 = 576
area of 2-side (triangle)= 2 x (0.5 x 24 x 41.8) = 1003.2
total area to be painted = 864 + 576 + 1003.2 = 2443.2
