Answer:
r=s(2b-a)
Step-by-step explanation:
You want isolate the variable, r, so we subtract a from both sides. We then have r over s equal 2b minus a. We we should multiply everything by s to cancel out the division. We come out with r equals s times 2b minus a.
Answer:
-15
Step-by-step explanation:
Multiply the whole equation by the inverse of the multiplier of the blank. Then you get ...
___ × 1 = (-27)×(5/9) = -15
The blank filled with -15 will make the equation true.
Answer:x=6573/500,x=13(73/500
Step-by-step explanation:
Answer:
A) each donut costs $0.65
B) the price for 1 and 1/2 dozen of donuts (18 donuts) is $11.70
Step-by-step explanation:
For a you have to divide $7.80 by 12 (since its a dozen) and thats how you get $0.65
For b you have to multiply the price of each donut ($0.65) by the 1 and 1/2 dozen (18 donuts) and thats how you get $11.70
