You probably would have received help faster had you posted only one problem at a time. Try that next time you want help.
Regarding your first question: "How many different ways can you obtain a total of 50 cents with 7 or fewer coins?" I'd suggest you write out as many combinations of 7 or fewer coins as you can that add up to 50 cents.
Examples:
Five dimes (5 coins) add up to 50 cents.
Three dimes and four nickels (7 coins) add up to 50 cents.
Keep going until you've run out of possibilities.
23. x-1=0, x=1
24.
+3x-28=0 , (x+7)(x-4)=0 , x=-7 or x=4
Answer:
7.5
Step-by-step explanation:
5 times 8 equals 40
300 divide 40 equals 7.5
to check the answer i use 5 times 8 times 7.5
and the answer is 300.
so my answer is correct
Add a photo. this is confusing
