Answer:1$ cards = 11 cards 3$ cards= 13

Step-by-step explanation:the first equation is -x-y=-24 and the second is x+3y=50. Solving them as a system will get 2y=26 to y=13 then plug in 13 to the y for -x-y=-24 to get 11. Mr jacobs is hard I know lol. Use elimination by subtraction and keep the first equation as x+y=24 and then flip to negative

**Answer:**

3.2 or 3.2/320

**Step-by-step explanation:**

**Answer: **The value of x= 270

**Step-by-step explanation:**

Given: Willy Wonka has x chocolate bars in his factory.

Chocolates he gave =

Remaining chocolates =

Half of the remaining chocolate bars =

Now , Chocolate left

As per given ,

Hence, **the value of x= 270**

**Answer:**

**pythagoras theorem**

**so we have a and b**

**12 and 9 **

so ...

take the square root to find c, since 225 is c^2

so √225 = c = 15